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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
10struct mt7603_fw_trailer {
11 char fw_ver[10];
12 char build_date[15];
13 __le32 dl_len;
14} __packed;
15
16static 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->mcu.msg_seq & 0xf;
26 if (!seq)
27 seq = ++mdev->mcu.msg_seq & 0xf;
28
29 txd = (struct mt7603_mcu_txd *)skb_push(skb, hdrlen);
30
31 txd->len = cpu_to_le16(skb->len);
32 if (cmd == -MCU_CMD_FW_SCATTER)
33 txd->pq_id = cpu_to_le16(MCU_PORT_QUEUE_FW);
34 else
35 txd->pq_id = cpu_to_le16(MCU_PORT_QUEUE);
36 txd->pkt_type = MCU_PKT_ID;
37 txd->seq = seq;
38
39 if (cmd < 0) {
40 txd->cid = -cmd;
41 txd->set_query = MCU_Q_NA;
42 } else {
43 txd->cid = MCU_CMD_EXT_CID;
44 txd->ext_cid = cmd;
45 txd->set_query = MCU_Q_SET;
46 txd->ext_cid_ack = 1;
47 }
48
49 if (wait_seq)
50 *wait_seq = seq;
51
52 return mt76_tx_queue_skb_raw(dev, MT_TXQ_MCU, skb, 0);
53}
54
55static int
56mt7603_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data,
57 int len, bool wait_resp)
58{
59 struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
60 unsigned long expires = jiffies + 3 * HZ;
61 struct mt7603_mcu_rxd *rxd;
62 struct sk_buff *skb;
63 int ret, seq;
64
65 skb = mt76_mcu_msg_alloc(mdev, data, len);
66 if (!skb)
67 return -ENOMEM;
68
69 mutex_lock(&mdev->mcu.mutex);
70
71 ret = __mt7603_mcu_msg_send(dev, skb, cmd, &seq);
72 if (ret)
73 goto out;
74
75 while (wait_resp) {
76 bool check_seq = false;
77
78 skb = mt76_mcu_get_response(&dev->mt76, expires);
79 if (!skb) {
80 dev_err(mdev->dev,
81 "MCU message %d (seq %d) timed out\n",
82 cmd, seq);
83 dev->mcu_hang = MT7603_WATCHDOG_TIMEOUT;
84 ret = -ETIMEDOUT;
85 break;
86 }
87
88 rxd = (struct mt7603_mcu_rxd *)skb->data;
89 if (seq == rxd->seq)
90 check_seq = true;
91
92 dev_kfree_skb(skb);
93
94 if (check_seq)
95 break;
96 }
97
98out:
99 mutex_unlock(&mdev->mcu.mutex);
100
101 return ret;
102}
103
104static int
105mt7603_mcu_init_download(struct mt7603_dev *dev, u32 addr, u32 len)
106{
107 struct {
108 __le32 addr;
109 __le32 len;
110 __le32 mode;
111 } req = {
112 .addr = cpu_to_le32(addr),
113 .len = cpu_to_le32(len),
114 .mode = cpu_to_le32(BIT(31)),
115 };
116
117 return __mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_TARGET_ADDRESS_LEN_REQ,
118 &req, sizeof(req), true);
119}
120
121static int
122mt7603_mcu_send_firmware(struct mt7603_dev *dev, const void *data, int len)
123{
124 int cur_len, ret = 0;
125
126 while (len > 0) {
127 cur_len = min_t(int, 4096 - sizeof(struct mt7603_mcu_txd),
128 len);
129
130 ret = __mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_FW_SCATTER,
131 data, cur_len, false);
132 if (ret)
133 break;
134
135 data += cur_len;
136 len -= cur_len;
137 }
138
139 return ret;
140}
141
142static int
143mt7603_mcu_start_firmware(struct mt7603_dev *dev, u32 addr)
144{
145 struct {
146 __le32 override;
147 __le32 addr;
148 } req = {
149 .override = cpu_to_le32(addr ? 1 : 0),
150 .addr = cpu_to_le32(addr),
151 };
152
153 return __mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_FW_START_REQ,
154 &req, sizeof(req), true);
155}
156
157static int
158mt7603_mcu_restart(struct mt76_dev *dev)
159{
160 return __mt76_mcu_send_msg(dev, -MCU_CMD_RESTART_DL_REQ,
161 NULL, 0, true);
162}
163
164static int mt7603_load_firmware(struct mt7603_dev *dev)
165{
166 const struct firmware *fw;
167 const struct mt7603_fw_trailer *hdr;
168 const char *firmware;
169 int dl_len;
170 u32 addr, val;
171 int ret;
172
173 if (is_mt7628(dev)) {
174 if (mt76xx_rev(dev) == MT7628_REV_E1)
175 firmware = MT7628_FIRMWARE_E1;
176 else
177 firmware = MT7628_FIRMWARE_E2;
178 } else {
179 if (mt76xx_rev(dev) < MT7603_REV_E2)
180 firmware = MT7603_FIRMWARE_E1;
181 else
182 firmware = MT7603_FIRMWARE_E2;
183 }
184
185 ret = request_firmware(&fw, firmware, dev->mt76.dev);
186 if (ret)
187 return ret;
188
189 if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
190 dev_err(dev->mt76.dev, "Invalid firmware\n");
191 ret = -EINVAL;
192 goto out;
193 }
194
195 hdr = (const struct mt7603_fw_trailer *)(fw->data + fw->size -
196 sizeof(*hdr));
197
198 dev_info(dev->mt76.dev, "Firmware Version: %.10s\n", hdr->fw_ver);
199 dev_info(dev->mt76.dev, "Build Time: %.15s\n", hdr->build_date);
200
201 addr = mt7603_reg_map(dev, 0x50012498);
202 mt76_wr(dev, addr, 0x5);
203 mt76_wr(dev, addr, 0x5);
204 udelay(1);
205
206 /* switch to bypass mode */
207 mt76_rmw(dev, MT_SCH_4, MT_SCH_4_FORCE_QID,
208 MT_SCH_4_BYPASS | FIELD_PREP(MT_SCH_4_FORCE_QID, 5));
209
210 val = mt76_rr(dev, MT_TOP_MISC2);
211 if (val & BIT(1)) {
212 dev_info(dev->mt76.dev, "Firmware already running...\n");
213 goto running;
214 }
215
216 if (!mt76_poll_msec(dev, MT_TOP_MISC2, BIT(0) | BIT(1), BIT(0), 500)) {
217 dev_err(dev->mt76.dev, "Timeout waiting for ROM code to become ready\n");
218 ret = -EIO;
219 goto out;
220 }
221
222 dl_len = le32_to_cpu(hdr->dl_len) + 4;
223 ret = mt7603_mcu_init_download(dev, MCU_FIRMWARE_ADDRESS, dl_len);
224 if (ret) {
225 dev_err(dev->mt76.dev, "Download request failed\n");
226 goto out;
227 }
228
229 ret = mt7603_mcu_send_firmware(dev, fw->data, dl_len);
230 if (ret) {
231 dev_err(dev->mt76.dev, "Failed to send firmware to device\n");
232 goto out;
233 }
234
235 ret = mt7603_mcu_start_firmware(dev, MCU_FIRMWARE_ADDRESS);
236 if (ret) {
237 dev_err(dev->mt76.dev, "Failed to start firmware\n");
238 goto out;
239 }
240
241 if (!mt76_poll_msec(dev, MT_TOP_MISC2, BIT(1), BIT(1), 500)) {
242 dev_err(dev->mt76.dev, "Timeout waiting for firmware to initialize\n");
243 ret = -EIO;
244 goto out;
245 }
246
247running:
248 mt76_clear(dev, MT_SCH_4, MT_SCH_4_FORCE_QID | MT_SCH_4_BYPASS);
249
250 mt76_set(dev, MT_SCH_4, BIT(8));
251 mt76_clear(dev, MT_SCH_4, BIT(8));
252
253 dev->mcu_running = true;
254 snprintf(dev->mt76.hw->wiphy->fw_version,
255 sizeof(dev->mt76.hw->wiphy->fw_version),
256 "%.10s-%.15s", hdr->fw_ver, hdr->build_date);
257 dev_info(dev->mt76.dev, "firmware init done\n");
258
259out:
260 release_firmware(fw);
261
262 return ret;
263}
264
265int mt7603_mcu_init(struct mt7603_dev *dev)
266{
267 static const struct mt76_mcu_ops mt7603_mcu_ops = {
268 .headroom = sizeof(struct mt7603_mcu_txd),
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
277void mt7603_mcu_exit(struct mt7603_dev *dev)
278{
279 __mt76_mcu_restart(&dev->mt76);
280 skb_queue_purge(&dev->mt76.mcu.res_q);
281}
282
283int 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 __le16 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
387static 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->mphy.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
431int mt7603_mcu_set_channel(struct mt7603_dev *dev)
432{
433 struct cfg80211_chan_def *chandef = &dev->mphy.chandef;
434 struct ieee80211_hw *hw = mt76_hw(dev);
435 int n_chains = hweight8(dev->mphy.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->mphy.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->mphy.antenna_mask == 3)
465 tx_power -= 6;
466 tx_power = min(tx_power, dev->tx_power_limit);
467
468 dev->mphy.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}