1 /* SPDX-License-Identifier: ISC */ 2 3 #include <linux/firmware.h> 4 #include "mt7603.h" 5 #include "mcu.h" 6 #include "eeprom.h" 7 8 #define MCU_SKB_RESERVE 8 9 10 struct mt7603_fw_trailer { 11 char fw_ver[10]; 12 char build_date[15]; 13 __le32 dl_len; 14 } __packed; 15 16 static int 17 __mt7603_mcu_msg_send(struct mt7603_dev *dev, struct sk_buff *skb, 18 int cmd, int *wait_seq) 19 { 20 int hdrlen = dev->mcu_running ? sizeof(struct mt7603_mcu_txd) : 12; 21 struct mt76_dev *mdev = &dev->mt76; 22 struct mt7603_mcu_txd *txd; 23 u8 seq; 24 25 seq = ++mdev->mmio.mcu.msg_seq & 0xf; 26 if (!seq) 27 seq = ++mdev->mmio.mcu.msg_seq & 0xf; 28 29 txd = (struct mt7603_mcu_txd *)skb_push(skb, hdrlen); 30 memset(txd, 0, hdrlen); 31 32 txd->len = cpu_to_le16(skb->len); 33 if (cmd == -MCU_CMD_FW_SCATTER) 34 txd->pq_id = cpu_to_le16(MCU_PORT_QUEUE_FW); 35 else 36 txd->pq_id = cpu_to_le16(MCU_PORT_QUEUE); 37 txd->pkt_type = MCU_PKT_ID; 38 txd->seq = seq; 39 40 if (cmd < 0) { 41 txd->cid = -cmd; 42 txd->set_query = MCU_Q_NA; 43 } else { 44 txd->cid = MCU_CMD_EXT_CID; 45 txd->ext_cid = cmd; 46 txd->set_query = MCU_Q_SET; 47 txd->ext_cid_ack = 1; 48 } 49 50 if (wait_seq) 51 *wait_seq = seq; 52 53 return mt76_tx_queue_skb_raw(dev, MT_TXQ_MCU, skb, 0); 54 } 55 56 static int 57 mt7603_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data, 58 int len, bool wait_resp) 59 { 60 struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76); 61 unsigned long expires = jiffies + 3 * HZ; 62 struct mt7603_mcu_rxd *rxd; 63 struct sk_buff *skb; 64 int ret, seq; 65 66 skb = mt7603_mcu_msg_alloc(data, len); 67 if (!skb) 68 return -ENOMEM; 69 70 mutex_lock(&mdev->mmio.mcu.mutex); 71 72 ret = __mt7603_mcu_msg_send(dev, skb, cmd, &seq); 73 if (ret) 74 goto out; 75 76 while (wait_resp) { 77 bool check_seq = false; 78 79 skb = mt76_mcu_get_response(&dev->mt76, expires); 80 if (!skb) { 81 dev_err(mdev->dev, 82 "MCU message %d (seq %d) timed out\n", 83 cmd, seq); 84 dev->mcu_hang = MT7603_WATCHDOG_TIMEOUT; 85 ret = -ETIMEDOUT; 86 break; 87 } 88 89 rxd = (struct mt7603_mcu_rxd *)skb->data; 90 if (seq == rxd->seq) 91 check_seq = true; 92 93 dev_kfree_skb(skb); 94 95 if (check_seq) 96 break; 97 } 98 99 out: 100 mutex_unlock(&mdev->mmio.mcu.mutex); 101 102 return ret; 103 } 104 105 static int 106 mt7603_mcu_init_download(struct mt7603_dev *dev, u32 addr, u32 len) 107 { 108 struct { 109 __le32 addr; 110 __le32 len; 111 __le32 mode; 112 } req = { 113 .addr = cpu_to_le32(addr), 114 .len = cpu_to_le32(len), 115 .mode = cpu_to_le32(BIT(31)), 116 }; 117 118 return __mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_TARGET_ADDRESS_LEN_REQ, 119 &req, sizeof(req), true); 120 } 121 122 static int 123 mt7603_mcu_send_firmware(struct mt7603_dev *dev, const void *data, int len) 124 { 125 int cur_len, ret = 0; 126 127 while (len > 0) { 128 cur_len = min_t(int, 4096 - sizeof(struct mt7603_mcu_txd), 129 len); 130 131 ret = __mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_FW_SCATTER, 132 data, cur_len, false); 133 if (ret) 134 break; 135 136 data += cur_len; 137 len -= cur_len; 138 } 139 140 return ret; 141 } 142 143 static int 144 mt7603_mcu_start_firmware(struct mt7603_dev *dev, u32 addr) 145 { 146 struct { 147 __le32 override; 148 __le32 addr; 149 } req = { 150 .override = cpu_to_le32(addr ? 1 : 0), 151 .addr = cpu_to_le32(addr), 152 }; 153 154 return __mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_FW_START_REQ, 155 &req, sizeof(req), true); 156 } 157 158 static int 159 mt7603_mcu_restart(struct mt76_dev *dev) 160 { 161 return __mt76_mcu_send_msg(dev, -MCU_CMD_RESTART_DL_REQ, 162 NULL, 0, true); 163 } 164 165 static int mt7603_load_firmware(struct mt7603_dev *dev) 166 { 167 const struct firmware *fw; 168 const struct mt7603_fw_trailer *hdr; 169 const char *firmware; 170 int dl_len; 171 u32 addr, val; 172 int ret; 173 174 if (is_mt7628(dev)) { 175 if (mt76xx_rev(dev) == MT7628_REV_E1) 176 firmware = MT7628_FIRMWARE_E1; 177 else 178 firmware = MT7628_FIRMWARE_E2; 179 } else { 180 if (mt76xx_rev(dev) < MT7603_REV_E2) 181 firmware = MT7603_FIRMWARE_E1; 182 else 183 firmware = MT7603_FIRMWARE_E2; 184 } 185 186 ret = request_firmware(&fw, firmware, dev->mt76.dev); 187 if (ret) 188 return ret; 189 190 if (!fw || !fw->data || fw->size < sizeof(*hdr)) { 191 dev_err(dev->mt76.dev, "Invalid firmware\n"); 192 ret = -EINVAL; 193 goto out; 194 } 195 196 hdr = (const struct mt7603_fw_trailer *)(fw->data + fw->size - 197 sizeof(*hdr)); 198 199 dev_info(dev->mt76.dev, "Firmware Version: %.10s\n", hdr->fw_ver); 200 dev_info(dev->mt76.dev, "Build Time: %.15s\n", hdr->build_date); 201 202 addr = mt7603_reg_map(dev, 0x50012498); 203 mt76_wr(dev, addr, 0x5); 204 mt76_wr(dev, addr, 0x5); 205 udelay(1); 206 207 /* switch to bypass mode */ 208 mt76_rmw(dev, MT_SCH_4, MT_SCH_4_FORCE_QID, 209 MT_SCH_4_BYPASS | FIELD_PREP(MT_SCH_4_FORCE_QID, 5)); 210 211 val = mt76_rr(dev, MT_TOP_MISC2); 212 if (val & BIT(1)) { 213 dev_info(dev->mt76.dev, "Firmware already running...\n"); 214 goto running; 215 } 216 217 if (!mt76_poll_msec(dev, MT_TOP_MISC2, BIT(0) | BIT(1), BIT(0), 500)) { 218 dev_err(dev->mt76.dev, "Timeout waiting for ROM code to become ready\n"); 219 ret = -EIO; 220 goto out; 221 } 222 223 dl_len = le32_to_cpu(hdr->dl_len) + 4; 224 ret = mt7603_mcu_init_download(dev, MCU_FIRMWARE_ADDRESS, dl_len); 225 if (ret) { 226 dev_err(dev->mt76.dev, "Download request failed\n"); 227 goto out; 228 } 229 230 ret = mt7603_mcu_send_firmware(dev, fw->data, dl_len); 231 if (ret) { 232 dev_err(dev->mt76.dev, "Failed to send firmware to device\n"); 233 goto out; 234 } 235 236 ret = mt7603_mcu_start_firmware(dev, MCU_FIRMWARE_ADDRESS); 237 if (ret) { 238 dev_err(dev->mt76.dev, "Failed to start firmware\n"); 239 goto out; 240 } 241 242 if (!mt76_poll_msec(dev, MT_TOP_MISC2, BIT(1), BIT(1), 500)) { 243 dev_err(dev->mt76.dev, "Timeout waiting for firmware to initialize\n"); 244 ret = -EIO; 245 goto out; 246 } 247 248 running: 249 mt76_clear(dev, MT_SCH_4, MT_SCH_4_FORCE_QID | MT_SCH_4_BYPASS); 250 251 mt76_set(dev, MT_SCH_4, BIT(8)); 252 mt76_clear(dev, MT_SCH_4, BIT(8)); 253 254 dev->mcu_running = true; 255 snprintf(dev->mt76.hw->wiphy->fw_version, 256 sizeof(dev->mt76.hw->wiphy->fw_version), 257 "%.10s-%.15s", hdr->fw_ver, hdr->build_date); 258 dev_info(dev->mt76.dev, "firmware init done\n"); 259 260 out: 261 release_firmware(fw); 262 263 return ret; 264 } 265 266 int mt7603_mcu_init(struct mt7603_dev *dev) 267 { 268 static const struct mt76_mcu_ops mt7603_mcu_ops = { 269 .mcu_send_msg = mt7603_mcu_msg_send, 270 .mcu_restart = mt7603_mcu_restart, 271 }; 272 273 dev->mt76.mcu_ops = &mt7603_mcu_ops; 274 return mt7603_load_firmware(dev); 275 } 276 277 void mt7603_mcu_exit(struct mt7603_dev *dev) 278 { 279 __mt76_mcu_restart(&dev->mt76); 280 skb_queue_purge(&dev->mt76.mmio.mcu.res_q); 281 } 282 283 int mt7603_mcu_set_eeprom(struct mt7603_dev *dev) 284 { 285 static const u16 req_fields[] = { 286 #define WORD(_start) \ 287 _start, \ 288 _start + 1 289 #define GROUP_2G(_start) \ 290 WORD(_start), \ 291 WORD(_start + 2), \ 292 WORD(_start + 4) 293 294 MT_EE_NIC_CONF_0 + 1, 295 WORD(MT_EE_NIC_CONF_1), 296 MT_EE_WIFI_RF_SETTING, 297 MT_EE_TX_POWER_DELTA_BW40, 298 MT_EE_TX_POWER_DELTA_BW80 + 1, 299 MT_EE_TX_POWER_EXT_PA_5G, 300 MT_EE_TEMP_SENSOR_CAL, 301 GROUP_2G(MT_EE_TX_POWER_0_START_2G), 302 GROUP_2G(MT_EE_TX_POWER_1_START_2G), 303 WORD(MT_EE_TX_POWER_CCK), 304 WORD(MT_EE_TX_POWER_OFDM_2G_6M), 305 WORD(MT_EE_TX_POWER_OFDM_2G_24M), 306 WORD(MT_EE_TX_POWER_OFDM_2G_54M), 307 WORD(MT_EE_TX_POWER_HT_BPSK_QPSK), 308 WORD(MT_EE_TX_POWER_HT_16_64_QAM), 309 WORD(MT_EE_TX_POWER_HT_64_QAM), 310 MT_EE_ELAN_RX_MODE_GAIN, 311 MT_EE_ELAN_RX_MODE_NF, 312 MT_EE_ELAN_RX_MODE_P1DB, 313 MT_EE_ELAN_BYPASS_MODE_GAIN, 314 MT_EE_ELAN_BYPASS_MODE_NF, 315 MT_EE_ELAN_BYPASS_MODE_P1DB, 316 WORD(MT_EE_STEP_NUM_NEG_6_7), 317 WORD(MT_EE_STEP_NUM_NEG_4_5), 318 WORD(MT_EE_STEP_NUM_NEG_2_3), 319 WORD(MT_EE_STEP_NUM_NEG_0_1), 320 WORD(MT_EE_REF_STEP_24G), 321 WORD(MT_EE_STEP_NUM_PLUS_1_2), 322 WORD(MT_EE_STEP_NUM_PLUS_3_4), 323 WORD(MT_EE_STEP_NUM_PLUS_5_6), 324 MT_EE_STEP_NUM_PLUS_7, 325 MT_EE_XTAL_FREQ_OFFSET, 326 MT_EE_XTAL_TRIM_2_COMP, 327 MT_EE_XTAL_TRIM_3_COMP, 328 MT_EE_XTAL_WF_RFCAL, 329 330 /* unknown fields below */ 331 WORD(0x24), 332 0x34, 333 0x39, 334 0x3b, 335 WORD(0x42), 336 WORD(0x9e), 337 0xf2, 338 WORD(0xf8), 339 0xfa, 340 0x12e, 341 WORD(0x130), WORD(0x132), WORD(0x134), WORD(0x136), 342 WORD(0x138), WORD(0x13a), WORD(0x13c), WORD(0x13e), 343 344 #undef GROUP_2G 345 #undef WORD 346 347 }; 348 struct req_data { 349 u16 addr; 350 u8 val; 351 u8 pad; 352 } __packed; 353 struct { 354 u8 buffer_mode; 355 u8 len; 356 u8 pad[2]; 357 } req_hdr = { 358 .buffer_mode = 1, 359 .len = ARRAY_SIZE(req_fields) - 1, 360 }; 361 const int size = 0xff * sizeof(struct req_data); 362 u8 *req, *eep = (u8 *)dev->mt76.eeprom.data; 363 int i, ret, len = sizeof(req_hdr) + size; 364 struct req_data *data; 365 366 BUILD_BUG_ON(ARRAY_SIZE(req_fields) * sizeof(*data) > size); 367 368 req = kmalloc(len, GFP_KERNEL); 369 if (!req) 370 return -ENOMEM; 371 372 memcpy(req, &req_hdr, sizeof(req_hdr)); 373 data = (struct req_data *)(req + sizeof(req_hdr)); 374 memset(data, 0, size); 375 for (i = 0; i < ARRAY_SIZE(req_fields); i++) { 376 data[i].addr = cpu_to_le16(req_fields[i]); 377 data[i].val = eep[req_fields[i]]; 378 } 379 380 ret = __mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_EFUSE_BUFFER_MODE, 381 req, len, true); 382 kfree(req); 383 384 return ret; 385 } 386 387 static int mt7603_mcu_set_tx_power(struct mt7603_dev *dev) 388 { 389 struct { 390 u8 center_channel; 391 u8 tssi; 392 u8 temp_comp; 393 u8 target_power[2]; 394 u8 rate_power_delta[14]; 395 u8 bw_power_delta; 396 u8 ch_power_delta[6]; 397 u8 temp_comp_power[17]; 398 u8 reserved; 399 } req = { 400 .center_channel = dev->mt76.chandef.chan->hw_value, 401 #define EEP_VAL(n) ((u8 *)dev->mt76.eeprom.data)[n] 402 .tssi = EEP_VAL(MT_EE_NIC_CONF_1 + 1), 403 .temp_comp = EEP_VAL(MT_EE_NIC_CONF_1), 404 .target_power = { 405 EEP_VAL(MT_EE_TX_POWER_0_START_2G + 2), 406 EEP_VAL(MT_EE_TX_POWER_1_START_2G + 2) 407 }, 408 .bw_power_delta = EEP_VAL(MT_EE_TX_POWER_DELTA_BW40), 409 .ch_power_delta = { 410 EEP_VAL(MT_EE_TX_POWER_0_START_2G + 3), 411 EEP_VAL(MT_EE_TX_POWER_0_START_2G + 4), 412 EEP_VAL(MT_EE_TX_POWER_0_START_2G + 5), 413 EEP_VAL(MT_EE_TX_POWER_1_START_2G + 3), 414 EEP_VAL(MT_EE_TX_POWER_1_START_2G + 4), 415 EEP_VAL(MT_EE_TX_POWER_1_START_2G + 5) 416 }, 417 #undef EEP_VAL 418 }; 419 u8 *eep = (u8 *)dev->mt76.eeprom.data; 420 421 memcpy(req.rate_power_delta, eep + MT_EE_TX_POWER_CCK, 422 sizeof(req.rate_power_delta)); 423 424 memcpy(req.temp_comp_power, eep + MT_EE_STEP_NUM_NEG_6_7, 425 sizeof(req.temp_comp_power)); 426 427 return __mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_SET_TX_POWER_CTRL, 428 &req, sizeof(req), true); 429 } 430 431 int mt7603_mcu_set_channel(struct mt7603_dev *dev) 432 { 433 struct cfg80211_chan_def *chandef = &dev->mt76.chandef; 434 struct ieee80211_hw *hw = mt76_hw(dev); 435 int n_chains = hweight8(dev->mt76.antenna_mask); 436 struct { 437 u8 control_chan; 438 u8 center_chan; 439 u8 bw; 440 u8 tx_streams; 441 u8 rx_streams; 442 u8 _res0[7]; 443 u8 txpower[21]; 444 u8 _res1[3]; 445 } req = { 446 .control_chan = chandef->chan->hw_value, 447 .center_chan = chandef->chan->hw_value, 448 .bw = MT_BW_20, 449 .tx_streams = n_chains, 450 .rx_streams = n_chains, 451 }; 452 s8 tx_power; 453 int i, ret; 454 455 if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_40) { 456 req.bw = MT_BW_40; 457 if (chandef->center_freq1 > chandef->chan->center_freq) 458 req.center_chan += 2; 459 else 460 req.center_chan -= 2; 461 } 462 463 tx_power = hw->conf.power_level * 2; 464 if (dev->mt76.antenna_mask == 3) 465 tx_power -= 6; 466 tx_power = min(tx_power, dev->tx_power_limit); 467 468 dev->mt76.txpower_cur = tx_power; 469 470 for (i = 0; i < ARRAY_SIZE(req.txpower); i++) 471 req.txpower[i] = tx_power; 472 473 ret = __mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_CHANNEL_SWITCH, 474 &req, sizeof(req), true); 475 if (ret) 476 return ret; 477 478 return mt7603_mcu_set_tx_power(dev); 479 } 480