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16#include <linux/kernel.h>
17#include <linux/firmware.h>
18#include <linux/delay.h>
19#include <linux/usb.h>
20#include <linux/skbuff.h>
21
22#include "mt7601u.h"
23#include "dma.h"
24#include "mcu.h"
25#include "usb.h"
26#include "trace.h"
27
28#define MCU_FW_URB_MAX_PAYLOAD 0x3800
29#define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12)
30#define MCU_RESP_URB_SIZE 1024
31
32static inline int firmware_running(struct mt7601u_dev *dev)
33{
34 return mt7601u_rr(dev, MT_MCU_COM_REG0) == 1;
35}
36
37static inline void skb_put_le32(struct sk_buff *skb, u32 val)
38{
39 put_unaligned_le32(val, skb_put(skb, 4));
40}
41
42static inline void mt7601u_dma_skb_wrap_cmd(struct sk_buff *skb,
43 u8 seq, enum mcu_cmd cmd)
44{
45 WARN_ON(mt7601u_dma_skb_wrap(skb, CPU_TX_PORT, DMA_COMMAND,
46 FIELD_PREP(MT_TXD_CMD_INFO_SEQ, seq) |
47 FIELD_PREP(MT_TXD_CMD_INFO_TYPE, cmd)));
48}
49
50static inline void trace_mt_mcu_msg_send_cs(struct mt7601u_dev *dev,
51 struct sk_buff *skb, bool need_resp)
52{
53 u32 i, csum = 0;
54
55 for (i = 0; i < skb->len / 4; i++)
56 csum ^= get_unaligned_le32(skb->data + i * 4);
57
58 trace_mt_mcu_msg_send(dev, skb, csum, need_resp);
59}
60
61static struct sk_buff *
62mt7601u_mcu_msg_alloc(struct mt7601u_dev *dev, const void *data, int len)
63{
64 struct sk_buff *skb;
65
66 WARN_ON(len % 4);
67
68 skb = alloc_skb(len + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
69 if (skb) {
70 skb_reserve(skb, MT_DMA_HDR_LEN);
71 skb_put_data(skb, data, len);
72 }
73
74 return skb;
75}
76
77static int mt7601u_mcu_wait_resp(struct mt7601u_dev *dev, u8 seq)
78{
79 struct urb *urb = dev->mcu.resp.urb;
80 u32 rxfce;
81 int urb_status, ret, i = 5;
82
83 while (i--) {
84 if (!wait_for_completion_timeout(&dev->mcu.resp_cmpl,
85 msecs_to_jiffies(300))) {
86 dev_warn(dev->dev, "Warning: %s retrying\n", __func__);
87 continue;
88 }
89
90
91 rxfce = get_unaligned_le32(dev->mcu.resp.buf);
92 urb_status = urb->status * mt7601u_urb_has_error(urb);
93
94 ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
95 &dev->mcu.resp, GFP_KERNEL,
96 mt7601u_complete_urb,
97 &dev->mcu.resp_cmpl);
98 if (ret)
99 return ret;
100
101 if (urb_status)
102 dev_err(dev->dev, "Error: MCU resp urb failed:%d\n",
103 urb_status);
104
105 if (FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce) == seq &&
106 FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce) == CMD_DONE)
107 return 0;
108
109 dev_err(dev->dev, "Error: MCU resp evt:%lx seq:%hhx-%lx!\n",
110 FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce),
111 seq, FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce));
112 }
113
114 dev_err(dev->dev, "Error: %s timed out\n", __func__);
115 return -ETIMEDOUT;
116}
117
118static int
119mt7601u_mcu_msg_send(struct mt7601u_dev *dev, struct sk_buff *skb,
120 enum mcu_cmd cmd, bool wait_resp)
121{
122 struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
123 unsigned cmd_pipe = usb_sndbulkpipe(usb_dev,
124 dev->out_eps[MT_EP_OUT_INBAND_CMD]);
125 int sent, ret;
126 u8 seq = 0;
127
128 if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
129 return 0;
130
131 mutex_lock(&dev->mcu.mutex);
132
133 if (wait_resp)
134 while (!seq)
135 seq = ++dev->mcu.msg_seq & 0xf;
136
137 mt7601u_dma_skb_wrap_cmd(skb, seq, cmd);
138
139 if (dev->mcu.resp_cmpl.done)
140 dev_err(dev->dev, "Error: MCU response pre-completed!\n");
141
142 trace_mt_mcu_msg_send_cs(dev, skb, wait_resp);
143 trace_mt_submit_urb_sync(dev, cmd_pipe, skb->len);
144 ret = usb_bulk_msg(usb_dev, cmd_pipe, skb->data, skb->len, &sent, 500);
145 if (ret) {
146 dev_err(dev->dev, "Error: send MCU cmd failed:%d\n", ret);
147 goto out;
148 }
149 if (sent != skb->len)
150 dev_err(dev->dev, "Error: %s sent != skb->len\n", __func__);
151
152 if (wait_resp)
153 ret = mt7601u_mcu_wait_resp(dev, seq);
154out:
155 mutex_unlock(&dev->mcu.mutex);
156
157 consume_skb(skb);
158
159 return ret;
160}
161
162static int mt7601u_mcu_function_select(struct mt7601u_dev *dev,
163 enum mcu_function func, u32 val)
164{
165 struct sk_buff *skb;
166 struct {
167 __le32 id;
168 __le32 value;
169 } __packed __aligned(4) msg = {
170 .id = cpu_to_le32(func),
171 .value = cpu_to_le32(val),
172 };
173
174 skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
175 if (!skb)
176 return -ENOMEM;
177 return mt7601u_mcu_msg_send(dev, skb, CMD_FUN_SET_OP, func == 5);
178}
179
180int mt7601u_mcu_tssi_read_kick(struct mt7601u_dev *dev, int use_hvga)
181{
182 int ret;
183
184 if (!test_bit(MT7601U_STATE_MCU_RUNNING, &dev->state))
185 return 0;
186
187 ret = mt7601u_mcu_function_select(dev, ATOMIC_TSSI_SETTING,
188 use_hvga);
189 if (ret) {
190 dev_warn(dev->dev, "Warning: MCU TSSI read kick failed\n");
191 return ret;
192 }
193
194 dev->tssi_read_trig = true;
195
196 return 0;
197}
198
199int
200mt7601u_mcu_calibrate(struct mt7601u_dev *dev, enum mcu_calibrate cal, u32 val)
201{
202 struct sk_buff *skb;
203 struct {
204 __le32 id;
205 __le32 value;
206 } __packed __aligned(4) msg = {
207 .id = cpu_to_le32(cal),
208 .value = cpu_to_le32(val),
209 };
210
211 skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
212 if (!skb)
213 return -ENOMEM;
214 return mt7601u_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP, true);
215}
216
217int mt7601u_write_reg_pairs(struct mt7601u_dev *dev, u32 base,
218 const struct mt76_reg_pair *data, int n)
219{
220 const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8;
221 struct sk_buff *skb;
222 int cnt, i, ret;
223
224 if (!n)
225 return 0;
226
227 cnt = min(max_vals_per_cmd, n);
228
229 skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
230 if (!skb)
231 return -ENOMEM;
232 skb_reserve(skb, MT_DMA_HDR_LEN);
233
234 for (i = 0; i < cnt; i++) {
235 skb_put_le32(skb, base + data[i].reg);
236 skb_put_le32(skb, data[i].value);
237 }
238
239 ret = mt7601u_mcu_msg_send(dev, skb, CMD_RANDOM_WRITE, cnt == n);
240 if (ret)
241 return ret;
242
243 return mt7601u_write_reg_pairs(dev, base, data + cnt, n - cnt);
244}
245
246int mt7601u_burst_write_regs(struct mt7601u_dev *dev, u32 offset,
247 const u32 *data, int n)
248{
249 const int max_regs_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1;
250 struct sk_buff *skb;
251 int cnt, i, ret;
252
253 if (!n)
254 return 0;
255
256 cnt = min(max_regs_per_cmd, n);
257
258 skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
259 if (!skb)
260 return -ENOMEM;
261 skb_reserve(skb, MT_DMA_HDR_LEN);
262
263 skb_put_le32(skb, MT_MCU_MEMMAP_WLAN + offset);
264 for (i = 0; i < cnt; i++)
265 skb_put_le32(skb, data[i]);
266
267 ret = mt7601u_mcu_msg_send(dev, skb, CMD_BURST_WRITE, cnt == n);
268 if (ret)
269 return ret;
270
271 return mt7601u_burst_write_regs(dev, offset + cnt * 4,
272 data + cnt, n - cnt);
273}
274
275struct mt76_fw_header {
276 __le32 ilm_len;
277 __le32 dlm_len;
278 __le16 build_ver;
279 __le16 fw_ver;
280 u8 pad[4];
281 char build_time[16];
282};
283
284struct mt76_fw {
285 struct mt76_fw_header hdr;
286 u8 ivb[MT_MCU_IVB_SIZE];
287 u8 ilm[];
288};
289
290static int __mt7601u_dma_fw(struct mt7601u_dev *dev,
291 const struct mt7601u_dma_buf *dma_buf,
292 const void *data, u32 len, u32 dst_addr)
293{
294 DECLARE_COMPLETION_ONSTACK(cmpl);
295 struct mt7601u_dma_buf buf = *dma_buf;
296 __le32 reg;
297 u32 val;
298 int ret;
299
300 reg = cpu_to_le32(FIELD_PREP(MT_TXD_INFO_TYPE, DMA_PACKET) |
301 FIELD_PREP(MT_TXD_INFO_D_PORT, CPU_TX_PORT) |
302 FIELD_PREP(MT_TXD_INFO_LEN, len));
303 memcpy(buf.buf, ®, sizeof(reg));
304 memcpy(buf.buf + sizeof(reg), data, len);
305 memset(buf.buf + sizeof(reg) + len, 0, 8);
306
307 ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
308 MT_FCE_DMA_ADDR, dst_addr);
309 if (ret)
310 return ret;
311 len = roundup(len, 4);
312 ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
313 MT_FCE_DMA_LEN, len << 16);
314 if (ret)
315 return ret;
316
317 buf.len = MT_DMA_HDR_LEN + len + 4;
318 ret = mt7601u_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD,
319 &buf, GFP_KERNEL,
320 mt7601u_complete_urb, &cmpl);
321 if (ret)
322 return ret;
323
324 if (!wait_for_completion_timeout(&cmpl, msecs_to_jiffies(1000))) {
325 dev_err(dev->dev, "Error: firmware upload timed out\n");
326 usb_kill_urb(buf.urb);
327 return -ETIMEDOUT;
328 }
329 if (mt7601u_urb_has_error(buf.urb)) {
330 dev_err(dev->dev, "Error: firmware upload urb failed:%d\n",
331 buf.urb->status);
332 return buf.urb->status;
333 }
334
335 val = mt7601u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX);
336 val++;
337 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val);
338
339 return 0;
340}
341
342static int
343mt7601u_dma_fw(struct mt7601u_dev *dev, struct mt7601u_dma_buf *dma_buf,
344 const void *data, int len, u32 dst_addr)
345{
346 int n, ret;
347
348 if (len == 0)
349 return 0;
350
351 n = min(MCU_FW_URB_MAX_PAYLOAD, len);
352 ret = __mt7601u_dma_fw(dev, dma_buf, data, n, dst_addr);
353 if (ret)
354 return ret;
355
356 if (!mt76_poll_msec(dev, MT_MCU_COM_REG1, BIT(31), BIT(31), 500))
357 return -ETIMEDOUT;
358
359 return mt7601u_dma_fw(dev, dma_buf, data + n, len - n, dst_addr + n);
360}
361
362static int
363mt7601u_upload_firmware(struct mt7601u_dev *dev, const struct mt76_fw *fw)
364{
365 struct mt7601u_dma_buf dma_buf;
366 void *ivb;
367 u32 ilm_len, dlm_len;
368 int i, ret;
369
370 ivb = kmemdup(fw->ivb, sizeof(fw->ivb), GFP_KERNEL);
371 if (!ivb)
372 return -ENOMEM;
373 if (mt7601u_usb_alloc_buf(dev, MCU_FW_URB_SIZE, &dma_buf)) {
374 ret = -ENOMEM;
375 goto error;
376 }
377
378 ilm_len = le32_to_cpu(fw->hdr.ilm_len) - sizeof(fw->ivb);
379 dev_dbg(dev->dev, "loading FW - ILM %u + IVB %zu\n",
380 ilm_len, sizeof(fw->ivb));
381 ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm, ilm_len, sizeof(fw->ivb));
382 if (ret)
383 goto error;
384
385 dlm_len = le32_to_cpu(fw->hdr.dlm_len);
386 dev_dbg(dev->dev, "loading FW - DLM %u\n", dlm_len);
387 ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm + ilm_len,
388 dlm_len, MT_MCU_DLM_OFFSET);
389 if (ret)
390 goto error;
391
392 ret = mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
393 0x12, 0, ivb, sizeof(fw->ivb));
394 if (ret < 0)
395 goto error;
396 ret = 0;
397
398 for (i = 100; i && !firmware_running(dev); i--)
399 msleep(10);
400 if (!i) {
401 ret = -ETIMEDOUT;
402 goto error;
403 }
404
405 dev_dbg(dev->dev, "Firmware running!\n");
406error:
407 kfree(ivb);
408 mt7601u_usb_free_buf(dev, &dma_buf);
409
410 return ret;
411}
412
413static int mt7601u_load_firmware(struct mt7601u_dev *dev)
414{
415 const struct firmware *fw;
416 const struct mt76_fw_header *hdr;
417 int len, ret;
418 u32 val;
419
420 mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
421 MT_USB_DMA_CFG_TX_BULK_EN));
422
423 if (firmware_running(dev))
424 return 0;
425
426 ret = request_firmware(&fw, MT7601U_FIRMWARE, dev->dev);
427 if (ret)
428 return ret;
429
430 if (!fw || !fw->data || fw->size < sizeof(*hdr))
431 goto err_inv_fw;
432
433 hdr = (const struct mt76_fw_header *) fw->data;
434
435 if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)
436 goto err_inv_fw;
437
438 len = sizeof(*hdr);
439 len += le32_to_cpu(hdr->ilm_len);
440 len += le32_to_cpu(hdr->dlm_len);
441
442 if (fw->size != len)
443 goto err_inv_fw;
444
445 val = le16_to_cpu(hdr->fw_ver);
446 dev_info(dev->dev,
447 "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
448 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
449 le16_to_cpu(hdr->build_ver), hdr->build_time);
450
451 len = le32_to_cpu(hdr->ilm_len);
452
453 mt7601u_wr(dev, 0x94c, 0);
454 mt7601u_wr(dev, MT_FCE_PSE_CTRL, 0);
455
456 mt7601u_vendor_reset(dev);
457 msleep(5);
458
459 mt7601u_wr(dev, 0xa44, 0);
460 mt7601u_wr(dev, 0x230, 0x84210);
461 mt7601u_wr(dev, 0x400, 0x80c00);
462 mt7601u_wr(dev, 0x800, 1);
463
464 mt7601u_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN |
465 MT_PBF_CFG_TX1Q_EN |
466 MT_PBF_CFG_TX2Q_EN |
467 MT_PBF_CFG_TX3Q_EN));
468
469 mt7601u_wr(dev, MT_FCE_PSE_CTRL, 1);
470
471 mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
472 MT_USB_DMA_CFG_TX_BULK_EN));
473 val = mt76_set(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_CLR);
474 val &= ~MT_USB_DMA_CFG_TX_CLR;
475 mt7601u_wr(dev, MT_USB_DMA_CFG, val);
476
477
478 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
479
480 mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1);
481
482 mt7601u_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
483
484 mt7601u_wr(dev, MT_FCE_SKIP_FS, 3);
485
486 ret = mt7601u_upload_firmware(dev, (const struct mt76_fw *)fw->data);
487
488 release_firmware(fw);
489
490 return ret;
491
492err_inv_fw:
493 dev_err(dev->dev, "Invalid firmware image\n");
494 release_firmware(fw);
495 return -ENOENT;
496}
497
498int mt7601u_mcu_init(struct mt7601u_dev *dev)
499{
500 int ret;
501
502 mutex_init(&dev->mcu.mutex);
503
504 ret = mt7601u_load_firmware(dev);
505 if (ret)
506 return ret;
507
508 set_bit(MT7601U_STATE_MCU_RUNNING, &dev->state);
509
510 return 0;
511}
512
513int mt7601u_mcu_cmd_init(struct mt7601u_dev *dev)
514{
515 int ret;
516
517 ret = mt7601u_mcu_function_select(dev, Q_SELECT, 1);
518 if (ret)
519 return ret;
520
521 init_completion(&dev->mcu.resp_cmpl);
522 if (mt7601u_usb_alloc_buf(dev, MCU_RESP_URB_SIZE, &dev->mcu.resp)) {
523 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
524 return -ENOMEM;
525 }
526
527 ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
528 &dev->mcu.resp, GFP_KERNEL,
529 mt7601u_complete_urb, &dev->mcu.resp_cmpl);
530 if (ret) {
531 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
532 return ret;
533 }
534
535 return 0;
536}
537
538void mt7601u_mcu_cmd_deinit(struct mt7601u_dev *dev)
539{
540 usb_kill_urb(dev->mcu.resp.urb);
541 mt7601u_usb_free_buf(dev, &dev->mcu.resp);
542}
543
