summaryrefslogtreecommitdiff
path: root/drivers/usb/dwc3/debug.h
blob: bfb90c52d8fc9220f9acc6d520b9c6cd87ac52a4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
// SPDX-License-Identifier: GPL-2.0
/**
 * debug.h - DesignWare USB3 DRD Controller Debug Header
 *
 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
 *
 * Authors: Felipe Balbi <balbi@ti.com>,
 *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
 */

#ifndef __DWC3_DEBUG_H
#define __DWC3_DEBUG_H

#include "core.h"

/**
 * dwc3_gadget_ep_cmd_string - returns endpoint command string
 * @cmd: command code
 */
static inline const char *
dwc3_gadget_ep_cmd_string(u8 cmd)
{
	switch (cmd) {
	case DWC3_DEPCMD_DEPSTARTCFG:
		return "Start New Configuration";
	case DWC3_DEPCMD_ENDTRANSFER:
		return "End Transfer";
	case DWC3_DEPCMD_UPDATETRANSFER:
		return "Update Transfer";
	case DWC3_DEPCMD_STARTTRANSFER:
		return "Start Transfer";
	case DWC3_DEPCMD_CLEARSTALL:
		return "Clear Stall";
	case DWC3_DEPCMD_SETSTALL:
		return "Set Stall";
	case DWC3_DEPCMD_GETEPSTATE:
		return "Get Endpoint State";
	case DWC3_DEPCMD_SETTRANSFRESOURCE:
		return "Set Endpoint Transfer Resource";
	case DWC3_DEPCMD_SETEPCONFIG:
		return "Set Endpoint Configuration";
	default:
		return "UNKNOWN command";
	}
}

/**
 * dwc3_gadget_generic_cmd_string - returns generic command string
 * @cmd: command code
 */
static inline const char *
dwc3_gadget_generic_cmd_string(u8 cmd)
{
	switch (cmd) {
	case DWC3_DGCMD_SET_LMP:
		return "Set LMP";
	case DWC3_DGCMD_SET_PERIODIC_PAR:
		return "Set Periodic Parameters";
	case DWC3_DGCMD_XMIT_FUNCTION:
		return "Transmit Function Wake Device Notification";
	case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO:
		return "Set Scratchpad Buffer Array Address Lo";
	case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI:
		return "Set Scratchpad Buffer Array Address Hi";
	case DWC3_DGCMD_SELECTED_FIFO_FLUSH:
		return "Selected FIFO Flush";
	case DWC3_DGCMD_ALL_FIFO_FLUSH:
		return "All FIFO Flush";
	case DWC3_DGCMD_SET_ENDPOINT_NRDY:
		return "Set Endpoint NRDY";
	case DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK:
		return "Run SoC Bus Loopback Test";
	default:
		return "UNKNOWN";
	}
}

/**
 * dwc3_gadget_link_string - returns link name
 * @link_state: link state code
 */
static inline const char *
dwc3_gadget_link_string(enum dwc3_link_state link_state)
{
	switch (link_state) {
	case DWC3_LINK_STATE_U0:
		return "U0";
	case DWC3_LINK_STATE_U1:
		return "U1";
	case DWC3_LINK_STATE_U2:
		return "U2";
	case DWC3_LINK_STATE_U3:
		return "U3";
	case DWC3_LINK_STATE_SS_DIS:
		return "SS.Disabled";
	case DWC3_LINK_STATE_RX_DET:
		return "RX.Detect";
	case DWC3_LINK_STATE_SS_INACT:
		return "SS.Inactive";
	case DWC3_LINK_STATE_POLL:
		return "Polling";
	case DWC3_LINK_STATE_RECOV:
		return "Recovery";
	case DWC3_LINK_STATE_HRESET:
		return "Hot Reset";
	case DWC3_LINK_STATE_CMPLY:
		return "Compliance";
	case DWC3_LINK_STATE_LPBK:
		return "Loopback";
	case DWC3_LINK_STATE_RESET:
		return "Reset";
	case DWC3_LINK_STATE_RESUME:
		return "Resume";
	default:
		return "UNKNOWN link state\n";
	}
}

/**
 * dwc3_trb_type_string - returns TRB type as a string
 * @type: the type of the TRB
 */
static inline const char *dwc3_trb_type_string(unsigned int type)
{
	switch (type) {
	case DWC3_TRBCTL_NORMAL:
		return "normal";
	case DWC3_TRBCTL_CONTROL_SETUP:
		return "setup";
	case DWC3_TRBCTL_CONTROL_STATUS2:
		return "status2";
	case DWC3_TRBCTL_CONTROL_STATUS3:
		return "status3";
	case DWC3_TRBCTL_CONTROL_DATA:
		return "data";
	case DWC3_TRBCTL_ISOCHRONOUS_FIRST:
		return "isoc-first";
	case DWC3_TRBCTL_ISOCHRONOUS:
		return "isoc";
	case DWC3_TRBCTL_LINK_TRB:
		return "link";
	default:
		return "UNKNOWN";
	}
}

static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
{
	switch (state) {
	case EP0_UNCONNECTED:
		return "Unconnected";
	case EP0_SETUP_PHASE:
		return "Setup Phase";
	case EP0_DATA_PHASE:
		return "Data Phase";
	case EP0_STATUS_PHASE:
		return "Status Phase";
	default:
		return "UNKNOWN";
	}
}

/**
 * dwc3_gadget_event_string - returns event name
 * @event: the event code
 */
static inline const char *
dwc3_gadget_event_string(char *str, const struct dwc3_event_devt *event)
{
	enum dwc3_link_state state = event->event_info & DWC3_LINK_STATE_MASK;

	switch (event->type) {
	case DWC3_DEVICE_EVENT_DISCONNECT:
		sprintf(str, "Disconnect: [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_RESET:
		sprintf(str, "Reset [%s]", dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_CONNECT_DONE:
		sprintf(str, "Connection Done [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
		sprintf(str, "Link Change [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_WAKEUP:
		sprintf(str, "WakeUp [%s]", dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_EOPF:
		sprintf(str, "End-Of-Frame [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_SOF:
		sprintf(str, "Start-Of-Frame [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
		sprintf(str, "Erratic Error [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_CMD_CMPL:
		sprintf(str, "Command Complete [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_OVERFLOW:
		sprintf(str, "Overflow [%s]", dwc3_gadget_link_string(state));
		break;
	default:
		sprintf(str, "UNKNOWN");
	}

	return str;
}

static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str)
{
	switch (t & USB_RECIP_MASK) {
	case USB_RECIP_INTERFACE:
		sprintf(str, "Get Interface Status(Intf = %d, Length = %d)",
			i, l);
		break;
	case USB_RECIP_ENDPOINT:
		sprintf(str, "Get Endpoint Status(ep%d%s)",
			i & ~USB_DIR_IN,
			i & USB_DIR_IN ? "in" : "out");
		break;
	}
}

static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v,
						 __u16 i, char *str)
{
	switch (t & USB_RECIP_MASK) {
	case USB_RECIP_DEVICE:
		sprintf(str, "%s Device Feature(%s%s)",
			b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
			({char *s;
				switch (v) {
				case USB_DEVICE_SELF_POWERED:
					s = "Self Powered";
					break;
				case USB_DEVICE_REMOTE_WAKEUP:
					s = "Remote Wakeup";
					break;
				case USB_DEVICE_TEST_MODE:
					s = "Test Mode";
					break;
				case USB_DEVICE_U1_ENABLE:
					s = "U1 Enable";
					break;
				case USB_DEVICE_U2_ENABLE:
					s = "U2 Enable";
					break;
				case USB_DEVICE_LTM_ENABLE:
					s = "LTM Enable";
					break;
				default:
					s = "UNKNOWN";
				} s; }),
			v == USB_DEVICE_TEST_MODE ?
			({ char *s;
				switch (i) {
				case TEST_J:
					s = ": TEST_J";
					break;
				case TEST_K:
					s = ": TEST_K";
					break;
				case TEST_SE0_NAK:
					s = ": TEST_SE0_NAK";
					break;
				case TEST_PACKET:
					s = ": TEST_PACKET";
					break;
				case TEST_FORCE_EN:
					s = ": TEST_FORCE_EN";
					break;
				default:
					s = ": UNKNOWN";
				} s; }) : "");
		break;
	case USB_RECIP_INTERFACE:
		sprintf(str, "%s Interface Feature(%s)",
			b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
			v == USB_INTRF_FUNC_SUSPEND ?
			"Function Suspend" : "UNKNOWN");
		break;
	case USB_RECIP_ENDPOINT:
		sprintf(str, "%s Endpoint Feature(%s ep%d%s)",
			b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
			v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
			i & ~USB_DIR_IN,
			i & USB_DIR_IN ? "in" : "out");
		break;
	}
}

static inline void dwc3_decode_set_address(__u16 v, char *str)
{
	sprintf(str, "Set Address(Addr = %02x)", v);
}

static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v,
						  __u16 i, __u16 l, char *str)
{
	sprintf(str, "%s %s Descriptor(Index = %d, Length = %d)",
		b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set",
		({ char *s;
			switch (v >> 8) {
			case USB_DT_DEVICE:
				s = "Device";
				break;
			case USB_DT_CONFIG:
				s = "Configuration";
				break;
			case USB_DT_STRING:
				s = "String";
				break;
			case USB_DT_INTERFACE:
				s = "Interface";
				break;
			case USB_DT_ENDPOINT:
				s = "Endpoint";
				break;
			case USB_DT_DEVICE_QUALIFIER:
				s = "Device Qualifier";
				break;
			case USB_DT_OTHER_SPEED_CONFIG:
				s = "Other Speed Config";
				break;
			case USB_DT_INTERFACE_POWER:
				s = "Interface Power";
				break;
			case USB_DT_OTG:
				s = "OTG";
				break;
			case USB_DT_DEBUG:
				s = "Debug";
				break;
			case USB_DT_INTERFACE_ASSOCIATION:
				s = "Interface Association";
				break;
			case USB_DT_BOS:
				s = "BOS";
				break;
			case USB_DT_DEVICE_CAPABILITY:
				s = "Device Capability";
				break;
			case USB_DT_PIPE_USAGE:
				s = "Pipe Usage";
				break;
			case USB_DT_SS_ENDPOINT_COMP:
				s = "SS Endpoint Companion";
				break;
			case USB_DT_SSP_ISOC_ENDPOINT_COMP:
				s = "SSP Isochronous Endpoint Companion";
				break;
			default:
				s = "UNKNOWN";
				break;
			} s; }), v & 0xff, l);
}


static inline void dwc3_decode_get_configuration(__u16 l, char *str)
{
	sprintf(str, "Get Configuration(Length = %d)", l);
}

static inline void dwc3_decode_set_configuration(__u8 v, char *str)
{
	sprintf(str, "Set Configuration(Config = %d)", v);
}

static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str)
{
	sprintf(str, "Get Interface(Intf = %d, Length = %d)", i, l);
}

static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str)
{
	sprintf(str, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v);
}

static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str)
{
	sprintf(str, "Synch Frame(Endpoint = %d, Length = %d)", i, l);
}

static inline void dwc3_decode_set_sel(__u16 l, char *str)
{
	sprintf(str, "Set SEL(Length = %d)", l);
}

static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str)
{
	sprintf(str, "Set Isochronous Delay(Delay = %d ns)", v);
}

/**
 * dwc3_decode_ctrl - returns a string represetion of ctrl request
 */
static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType,
		__u8 bRequest, __u16 wValue, __u16 wIndex, __u16 wLength)
{
	switch (bRequest) {
	case USB_REQ_GET_STATUS:
		dwc3_decode_get_status(bRequestType, wIndex, wLength, str);
		break;
	case USB_REQ_CLEAR_FEATURE:
	case USB_REQ_SET_FEATURE:
		dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue,
					      wIndex, str);
		break;
	case USB_REQ_SET_ADDRESS:
		dwc3_decode_set_address(wValue, str);
		break;
	case USB_REQ_GET_DESCRIPTOR:
	case USB_REQ_SET_DESCRIPTOR:
		dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue,
					       wIndex, wLength, str);
		break;
	case USB_REQ_GET_CONFIGURATION:
		dwc3_decode_get_configuration(wLength, str);
		break;
	case USB_REQ_SET_CONFIGURATION:
		dwc3_decode_set_configuration(wValue, str);
		break;
	case USB_REQ_GET_INTERFACE:
		dwc3_decode_get_intf(wIndex, wLength, str);
		break;
	case USB_REQ_SET_INTERFACE:
		dwc3_decode_set_intf(wValue, wIndex, str);
		break;
	case USB_REQ_SYNCH_FRAME:
		dwc3_decode_synch_frame(wIndex, wLength, str);
		break;
	case USB_REQ_SET_SEL:
		dwc3_decode_set_sel(wLength, str);
		break;
	case USB_REQ_SET_ISOCH_DELAY:
		dwc3_decode_set_isoch_delay(wValue, str);
		break;
	default:
		sprintf(str, "%02x %02x %02x %02x %02x %02x %02x %02x",
			bRequestType, bRequest,
			cpu_to_le16(wValue) & 0xff,
			cpu_to_le16(wValue) >> 8,
			cpu_to_le16(wIndex) & 0xff,
			cpu_to_le16(wIndex) >> 8,
			cpu_to_le16(wLength) & 0xff,
			cpu_to_le16(wLength) >> 8);
	}

	return str;
}

/**
 * dwc3_ep_event_string - returns event name
 * @event: then event code
 */
static inline const char *
dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event,
		     u32 ep0state)
{
	u8 epnum = event->endpoint_number;
	size_t len;
	int status;
	int ret;

	ret = sprintf(str, "ep%d%s: ", epnum >> 1,
			(epnum & 1) ? "in" : "out");
	if (ret < 0)
		return "UNKNOWN";

	switch (event->endpoint_event) {
	case DWC3_DEPEVT_XFERCOMPLETE:
		strcat(str, "Transfer Complete");
		len = strlen(str);

		if (epnum <= 1)
			sprintf(str + len, " [%s]", dwc3_ep0_state_string(ep0state));
		break;
	case DWC3_DEPEVT_XFERINPROGRESS:
		strcat(str, "Transfer In-Progress");
		break;
	case DWC3_DEPEVT_XFERNOTREADY:
		strcat(str, "Transfer Not Ready");
		status = event->status & DEPEVT_STATUS_TRANSFER_ACTIVE;
		strcat(str, status ? " (Active)" : " (Not Active)");

		/* Control Endpoints */
		if (epnum <= 1) {
			int phase = DEPEVT_STATUS_CONTROL_PHASE(event->status);

			switch (phase) {
			case DEPEVT_STATUS_CONTROL_DATA:
				strcat(str, " [Data Phase]");
				break;
			case DEPEVT_STATUS_CONTROL_STATUS:
				strcat(str, " [Status Phase]");
			}
		}
		break;
	case DWC3_DEPEVT_RXTXFIFOEVT:
		strcat(str, "FIFO");
		break;
	case DWC3_DEPEVT_STREAMEVT:
		status = event->status;

		switch (status) {
		case DEPEVT_STREAMEVT_FOUND:
			sprintf(str + ret, " Stream %d Found",
					event->parameters);
			break;
		case DEPEVT_STREAMEVT_NOTFOUND:
		default:
			strcat(str, " Stream Not Found");
			break;
		}

		break;
	case DWC3_DEPEVT_EPCMDCMPLT:
		strcat(str, "Endpoint Command Complete");
		break;
	default:
		sprintf(str, "UNKNOWN");
	}

	return str;
}

/**
 * dwc3_gadget_event_type_string - return event name
 * @event: the event code
 */
static inline const char *dwc3_gadget_event_type_string(u8 event)
{
	switch (event) {
	case DWC3_DEVICE_EVENT_DISCONNECT:
		return "Disconnect";
	case DWC3_DEVICE_EVENT_RESET:
		return "Reset";
	case DWC3_DEVICE_EVENT_CONNECT_DONE:
		return "Connect Done";
	case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
		return "Link Status Change";
	case DWC3_DEVICE_EVENT_WAKEUP:
		return "Wake-Up";
	case DWC3_DEVICE_EVENT_HIBER_REQ:
		return "Hibernation";
	case DWC3_DEVICE_EVENT_EOPF:
		return "End of Periodic Frame";
	case DWC3_DEVICE_EVENT_SOF:
		return "Start of Frame";
	case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
		return "Erratic Error";
	case DWC3_DEVICE_EVENT_CMD_CMPL:
		return "Command Complete";
	case DWC3_DEVICE_EVENT_OVERFLOW:
		return "Overflow";
	default:
		return "UNKNOWN";
	}
}

static inline const char *dwc3_decode_event(char *str, u32 event, u32 ep0state)
{
	const union dwc3_event evt = (union dwc3_event) event;

	if (evt.type.is_devspec)
		return dwc3_gadget_event_string(str, &evt.devt);
	else
		return dwc3_ep_event_string(str, &evt.depevt, ep0state);
}

static inline const char *dwc3_ep_cmd_status_string(int status)
{
	switch (status) {
	case -ETIMEDOUT:
		return "Timed Out";
	case 0:
		return "Successful";
	case DEPEVT_TRANSFER_NO_RESOURCE:
		return "No Resource";
	case DEPEVT_TRANSFER_BUS_EXPIRY:
		return "Bus Expiry";
	default:
		return "UNKNOWN";
	}
}

static inline const char *dwc3_gadget_generic_cmd_status_string(int status)
{
	switch (status) {
	case -ETIMEDOUT:
		return "Timed Out";
	case 0:
		return "Successful";
	case 1:
		return "Error";
	default:
		return "UNKNOWN";
	}
}


#ifdef CONFIG_DEBUG_FS
extern void dwc3_debugfs_init(struct dwc3 *);
extern void dwc3_debugfs_exit(struct dwc3 *);
#else
static inline void dwc3_debugfs_init(struct dwc3 *d)
{  }
static inline void dwc3_debugfs_exit(struct dwc3 *d)
{  }
#endif
#endif /* __DWC3_DEBUG_H */