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8#include <linux/kernel.h>
9#include <linux/firmware.h>
10#include <linux/delay.h>
11#include <linux/usb.h>
12#include <linux/skbuff.h>
13
14#include "mt7601u.h"
15#include "dma.h"
16#include "mcu.h"
17#include "usb.h"
18#include "trace.h"
19
20#define MCU_FW_URB_MAX_PAYLOAD 0x3800
21#define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12)
22#define MCU_RESP_URB_SIZE 1024
23
24static inline int firmware_running(struct mt7601u_dev *dev)
25{
26 return mt7601u_rr(dev, MT_MCU_COM_REG0) == 1;
27}
28
29static inline void skb_put_le32(struct sk_buff *skb, u32 val)
30{
31 put_unaligned_le32(val, skb_put(skb, 4));
32}
33
34static inline void mt7601u_dma_skb_wrap_cmd(struct sk_buff *skb,
35 u8 seq, enum mcu_cmd cmd)
36{
37 WARN_ON(mt7601u_dma_skb_wrap(skb, CPU_TX_PORT, DMA_COMMAND,
38 FIELD_PREP(MT_TXD_CMD_INFO_SEQ, seq) |
39 FIELD_PREP(MT_TXD_CMD_INFO_TYPE, cmd)));
40}
41
42static inline void trace_mt_mcu_msg_send_cs(struct mt7601u_dev *dev,
43 struct sk_buff *skb, bool need_resp)
44{
45 u32 i, csum = 0;
46
47 for (i = 0; i < skb->len / 4; i++)
48 csum ^= get_unaligned_le32(skb->data + i * 4);
49
50 trace_mt_mcu_msg_send(dev, skb, csum, need_resp);
51}
52
53static struct sk_buff *mt7601u_mcu_msg_alloc(const void *data, int len)
54{
55 struct sk_buff *skb;
56
57 WARN_ON(len % 4);
58
59 skb = alloc_skb(len + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
60 if (skb) {
61 skb_reserve(skb, MT_DMA_HDR_LEN);
62 skb_put_data(skb, data, len);
63 }
64
65 return skb;
66}
67
68static int mt7601u_mcu_wait_resp(struct mt7601u_dev *dev, u8 seq)
69{
70 struct urb *urb = dev->mcu.resp.urb;
71 u32 rxfce;
72 int urb_status, ret, i = 5;
73
74 while (i--) {
75 if (!wait_for_completion_timeout(&dev->mcu.resp_cmpl,
76 msecs_to_jiffies(300))) {
77 dev_warn(dev->dev, "Warning: %s retrying\n", __func__);
78 continue;
79 }
80
81
82 rxfce = get_unaligned_le32(dev->mcu.resp.buf);
83 urb_status = urb->status * mt7601u_urb_has_error(urb);
84
85 ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
86 &dev->mcu.resp, GFP_KERNEL,
87 mt7601u_complete_urb,
88 &dev->mcu.resp_cmpl);
89 if (ret)
90 return ret;
91
92 if (urb_status)
93 dev_err(dev->dev, "Error: MCU resp urb failed:%d\n",
94 urb_status);
95
96 if (FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce) == seq &&
97 FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce) == CMD_DONE)
98 return 0;
99
100 dev_err(dev->dev, "Error: MCU resp evt:%lx seq:%hhx-%lx!\n",
101 FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce),
102 seq, FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce));
103 }
104
105 dev_err(dev->dev, "Error: %s timed out\n", __func__);
106 return -ETIMEDOUT;
107}
108
109static int
110mt7601u_mcu_msg_send(struct mt7601u_dev *dev, struct sk_buff *skb,
111 enum mcu_cmd cmd, bool wait_resp)
112{
113 struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
114 unsigned cmd_pipe = usb_sndbulkpipe(usb_dev,
115 dev->out_eps[MT_EP_OUT_INBAND_CMD]);
116 int sent, ret;
117 u8 seq = 0;
118
119 if (test_bit(MT7601U_STATE_REMOVED, &dev->state)) {
120 consume_skb(skb);
121 return 0;
122 }
123
124 mutex_lock(&dev->mcu.mutex);
125
126 if (wait_resp)
127 while (!seq)
128 seq = ++dev->mcu.msg_seq & 0xf;
129
130 mt7601u_dma_skb_wrap_cmd(skb, seq, cmd);
131
132 if (dev->mcu.resp_cmpl.done)
133 dev_err(dev->dev, "Error: MCU response pre-completed!\n");
134
135 trace_mt_mcu_msg_send_cs(dev, skb, wait_resp);
136 trace_mt_submit_urb_sync(dev, cmd_pipe, skb->len);
137 ret = usb_bulk_msg(usb_dev, cmd_pipe, skb->data, skb->len, &sent, 500);
138 if (ret) {
139 dev_err(dev->dev, "Error: send MCU cmd failed:%d\n", ret);
140 goto out;
141 }
142 if (sent != skb->len)
143 dev_err(dev->dev, "Error: %s sent != skb->len\n", __func__);
144
145 if (wait_resp)
146 ret = mt7601u_mcu_wait_resp(dev, seq);
147out:
148 mutex_unlock(&dev->mcu.mutex);
149
150 consume_skb(skb);
151
152 return ret;
153}
154
155static int mt7601u_mcu_function_select(struct mt7601u_dev *dev,
156 enum mcu_function func, u32 val)
157{
158 struct sk_buff *skb;
159 struct {
160 __le32 id;
161 __le32 value;
162 } __packed __aligned(4) msg = {
163 .id = cpu_to_le32(func),
164 .value = cpu_to_le32(val),
165 };
166
167 skb = mt7601u_mcu_msg_alloc(&msg, sizeof(msg));
168 if (!skb)
169 return -ENOMEM;
170 return mt7601u_mcu_msg_send(dev, skb, CMD_FUN_SET_OP, func == 5);
171}
172
173int mt7601u_mcu_tssi_read_kick(struct mt7601u_dev *dev, int use_hvga)
174{
175 int ret;
176
177 if (!test_bit(MT7601U_STATE_MCU_RUNNING, &dev->state))
178 return 0;
179
180 ret = mt7601u_mcu_function_select(dev, ATOMIC_TSSI_SETTING,
181 use_hvga);
182 if (ret) {
183 dev_warn(dev->dev, "Warning: MCU TSSI read kick failed\n");
184 return ret;
185 }
186
187 dev->tssi_read_trig = true;
188
189 return 0;
190}
191
192int
193mt7601u_mcu_calibrate(struct mt7601u_dev *dev, enum mcu_calibrate cal, u32 val)
194{
195 struct sk_buff *skb;
196 struct {
197 __le32 id;
198 __le32 value;
199 } __packed __aligned(4) msg = {
200 .id = cpu_to_le32(cal),
201 .value = cpu_to_le32(val),
202 };
203
204 skb = mt7601u_mcu_msg_alloc(&msg, sizeof(msg));
205 if (!skb)
206 return -ENOMEM;
207 return mt7601u_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP, true);
208}
209
210int mt7601u_write_reg_pairs(struct mt7601u_dev *dev, u32 base,
211 const struct mt76_reg_pair *data, int n)
212{
213 const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8;
214 struct sk_buff *skb;
215 int cnt, i, ret;
216
217 if (!n)
218 return 0;
219
220 cnt = min(max_vals_per_cmd, n);
221
222 skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
223 if (!skb)
224 return -ENOMEM;
225 skb_reserve(skb, MT_DMA_HDR_LEN);
226
227 for (i = 0; i < cnt; i++) {
228 skb_put_le32(skb, base + data[i].reg);
229 skb_put_le32(skb, data[i].value);
230 }
231
232 ret = mt7601u_mcu_msg_send(dev, skb, CMD_RANDOM_WRITE, cnt == n);
233 if (ret)
234 return ret;
235
236 return mt7601u_write_reg_pairs(dev, base, data + cnt, n - cnt);
237}
238
239int mt7601u_burst_write_regs(struct mt7601u_dev *dev, u32 offset,
240 const u32 *data, int n)
241{
242 const int max_regs_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1;
243 struct sk_buff *skb;
244 int cnt, i, ret;
245
246 if (!n)
247 return 0;
248
249 cnt = min(max_regs_per_cmd, n);
250
251 skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
252 if (!skb)
253 return -ENOMEM;
254 skb_reserve(skb, MT_DMA_HDR_LEN);
255
256 skb_put_le32(skb, MT_MCU_MEMMAP_WLAN + offset);
257 for (i = 0; i < cnt; i++)
258 skb_put_le32(skb, data[i]);
259
260 ret = mt7601u_mcu_msg_send(dev, skb, CMD_BURST_WRITE, cnt == n);
261 if (ret)
262 return ret;
263
264 return mt7601u_burst_write_regs(dev, offset + cnt * 4,
265 data + cnt, n - cnt);
266}
267
268struct mt76_fw_header {
269 __le32 ilm_len;
270 __le32 dlm_len;
271 __le16 build_ver;
272 __le16 fw_ver;
273 u8 pad[4];
274 char build_time[16];
275};
276
277struct mt76_fw {
278 struct mt76_fw_header hdr;
279 u8 ivb[MT_MCU_IVB_SIZE];
280 u8 ilm[];
281};
282
283static int __mt7601u_dma_fw(struct mt7601u_dev *dev,
284 const struct mt7601u_dma_buf *dma_buf,
285 const void *data, u32 len, u32 dst_addr)
286{
287 DECLARE_COMPLETION_ONSTACK(cmpl);
288 struct mt7601u_dma_buf buf = *dma_buf;
289 __le32 reg;
290 u32 val;
291 int ret;
292
293 reg = cpu_to_le32(FIELD_PREP(MT_TXD_INFO_TYPE, DMA_PACKET) |
294 FIELD_PREP(MT_TXD_INFO_D_PORT, CPU_TX_PORT) |
295 FIELD_PREP(MT_TXD_INFO_LEN, len));
296 memcpy(buf.buf, ®, sizeof(reg));
297 memcpy(buf.buf + sizeof(reg), data, len);
298 memset(buf.buf + sizeof(reg) + len, 0, 8);
299
300 ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
301 MT_FCE_DMA_ADDR, dst_addr);
302 if (ret)
303 return ret;
304 len = roundup(len, 4);
305 ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
306 MT_FCE_DMA_LEN, len << 16);
307 if (ret)
308 return ret;
309
310 buf.len = MT_DMA_HDR_LEN + len + 4;
311 ret = mt7601u_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD,
312 &buf, GFP_KERNEL,
313 mt7601u_complete_urb, &cmpl);
314 if (ret)
315 return ret;
316
317 if (!wait_for_completion_timeout(&cmpl, msecs_to_jiffies(1000))) {
318 dev_err(dev->dev, "Error: firmware upload timed out\n");
319 usb_kill_urb(buf.urb);
320 return -ETIMEDOUT;
321 }
322 if (mt7601u_urb_has_error(buf.urb)) {
323 dev_err(dev->dev, "Error: firmware upload urb failed:%d\n",
324 buf.urb->status);
325 return buf.urb->status;
326 }
327
328 val = mt7601u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX);
329 val++;
330 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val);
331
332 return 0;
333}
334
335static int
336mt7601u_dma_fw(struct mt7601u_dev *dev, struct mt7601u_dma_buf *dma_buf,
337 const void *data, int len, u32 dst_addr)
338{
339 int n, ret;
340
341 if (len == 0)
342 return 0;
343
344 n = min(MCU_FW_URB_MAX_PAYLOAD, len);
345 ret = __mt7601u_dma_fw(dev, dma_buf, data, n, dst_addr);
346 if (ret)
347 return ret;
348
349 if (!mt76_poll_msec(dev, MT_MCU_COM_REG1, BIT(31), BIT(31), 500))
350 return -ETIMEDOUT;
351
352 return mt7601u_dma_fw(dev, dma_buf, data + n, len - n, dst_addr + n);
353}
354
355static int
356mt7601u_upload_firmware(struct mt7601u_dev *dev, const struct mt76_fw *fw)
357{
358 struct mt7601u_dma_buf dma_buf;
359 void *ivb;
360 u32 ilm_len, dlm_len;
361 int i, ret;
362
363 ivb = kmemdup(fw->ivb, sizeof(fw->ivb), GFP_KERNEL);
364 if (!ivb)
365 return -ENOMEM;
366 if (mt7601u_usb_alloc_buf(dev, MCU_FW_URB_SIZE, &dma_buf)) {
367 ret = -ENOMEM;
368 goto error;
369 }
370
371 ilm_len = le32_to_cpu(fw->hdr.ilm_len) - sizeof(fw->ivb);
372 dev_dbg(dev->dev, "loading FW - ILM %u + IVB %zu\n",
373 ilm_len, sizeof(fw->ivb));
374 ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm, ilm_len, sizeof(fw->ivb));
375 if (ret)
376 goto error;
377
378 dlm_len = le32_to_cpu(fw->hdr.dlm_len);
379 dev_dbg(dev->dev, "loading FW - DLM %u\n", dlm_len);
380 ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm + ilm_len,
381 dlm_len, MT_MCU_DLM_OFFSET);
382 if (ret)
383 goto error;
384
385 ret = mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
386 0x12, 0, ivb, sizeof(fw->ivb));
387 if (ret < 0)
388 goto error;
389 ret = 0;
390
391 for (i = 100; i && !firmware_running(dev); i--)
392 msleep(10);
393 if (!i) {
394 ret = -ETIMEDOUT;
395 goto error;
396 }
397
398 dev_dbg(dev->dev, "Firmware running!\n");
399error:
400 kfree(ivb);
401 mt7601u_usb_free_buf(dev, &dma_buf);
402
403 return ret;
404}
405
406static int mt7601u_load_firmware(struct mt7601u_dev *dev)
407{
408 const struct firmware *fw;
409 const struct mt76_fw_header *hdr;
410 int len, ret;
411 u32 val;
412
413 mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
414 MT_USB_DMA_CFG_TX_BULK_EN));
415
416 if (firmware_running(dev))
417 return firmware_request_cache(dev->dev, MT7601U_FIRMWARE);
418
419 ret = request_firmware(&fw, MT7601U_FIRMWARE, dev->dev);
420 if (ret)
421 return ret;
422
423 if (!fw || !fw->data || fw->size < sizeof(*hdr))
424 goto err_inv_fw;
425
426 hdr = (const struct mt76_fw_header *) fw->data;
427
428 if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)
429 goto err_inv_fw;
430
431 len = sizeof(*hdr);
432 len += le32_to_cpu(hdr->ilm_len);
433 len += le32_to_cpu(hdr->dlm_len);
434
435 if (fw->size != len)
436 goto err_inv_fw;
437
438 val = le16_to_cpu(hdr->fw_ver);
439 dev_info(dev->dev,
440 "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
441 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
442 le16_to_cpu(hdr->build_ver), hdr->build_time);
443
444 len = le32_to_cpu(hdr->ilm_len);
445
446 mt7601u_wr(dev, 0x94c, 0);
447 mt7601u_wr(dev, MT_FCE_PSE_CTRL, 0);
448
449 mt7601u_vendor_reset(dev);
450 msleep(5);
451
452 mt7601u_wr(dev, 0xa44, 0);
453 mt7601u_wr(dev, 0x230, 0x84210);
454 mt7601u_wr(dev, 0x400, 0x80c00);
455 mt7601u_wr(dev, 0x800, 1);
456
457 mt7601u_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN |
458 MT_PBF_CFG_TX1Q_EN |
459 MT_PBF_CFG_TX2Q_EN |
460 MT_PBF_CFG_TX3Q_EN));
461
462 mt7601u_wr(dev, MT_FCE_PSE_CTRL, 1);
463
464 mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
465 MT_USB_DMA_CFG_TX_BULK_EN));
466 val = mt76_set(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_CLR);
467 val &= ~MT_USB_DMA_CFG_TX_CLR;
468 mt7601u_wr(dev, MT_USB_DMA_CFG, val);
469
470
471 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
472
473 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1);
474
475 mt7601u_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
476
477 mt7601u_wr(dev, MT_FCE_SKIP_FS, 3);
478
479 ret = mt7601u_upload_firmware(dev, (const struct mt76_fw *)fw->data);
480
481 release_firmware(fw);
482
483 return ret;
484
485err_inv_fw:
486 dev_err(dev->dev, "Invalid firmware image\n");
487 release_firmware(fw);
488 return -ENOENT;
489}
490
491int mt7601u_mcu_init(struct mt7601u_dev *dev)
492{
493 int ret;
494
495 mutex_init(&dev->mcu.mutex);
496
497 ret = mt7601u_load_firmware(dev);
498 if (ret)
499 return ret;
500
501 set_bit(MT7601U_STATE_MCU_RUNNING, &dev->state);
502
503 return 0;
504}
505
506int mt7601u_mcu_cmd_init(struct mt7601u_dev *dev)
507{
508 int ret;
509
510 ret = mt7601u_mcu_function_select(dev, Q_SELECT, 1);
511 if (ret)
512 return ret;
513
514 init_completion(&dev->mcu.resp_cmpl);
515 if (mt7601u_usb_alloc_buf(dev, MCU_RESP_URB_SIZE, &dev->mcu.resp)) {
516 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
517 return -ENOMEM;
518 }
519
520 ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
521 &dev->mcu.resp, GFP_KERNEL,
522 mt7601u_complete_urb, &dev->mcu.resp_cmpl);
523 if (ret) {
524 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
525 return ret;
526 }
527
528 return 0;
529}
530
531void mt7601u_mcu_cmd_deinit(struct mt7601u_dev *dev)
532{
533 usb_kill_urb(dev->mcu.resp.urb);
534 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
535}
536
