summaryrefslogtreecommitdiff
path: root/drivers/usb/dwc3/debug.h
blob: 48b44b88dc25295693002dc81cca29a121119fe0 (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
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * debug.h - DesignWare USB3 DRD Controller Debug Header
 *
 * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://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_SET_ENDPOINT_PRIME:
		return "Set Endpoint Prime";
	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";
	}
}

/**
 * dwc3_gadget_hs_link_string - returns highspeed and below link name
 * @link_state: link state code
 */
static inline const char *
dwc3_gadget_hs_link_string(enum dwc3_link_state link_state)
{
	switch (link_state) {
	case DWC3_LINK_STATE_U0:
		return "On";
	case DWC3_LINK_STATE_U2:
		return "Sleep";
	case DWC3_LINK_STATE_U3:
		return "Suspend";
	case DWC3_LINK_STATE_SS_DIS:
		return "Disconnected";
	case DWC3_LINK_STATE_RX_DET:
		return "Early Suspend";
	case DWC3_LINK_STATE_RECOV:
		return "Recovery";
	case DWC3_LINK_STATE_RESET:
		return "Reset";
	case DWC3_LINK_STATE_RESUME:
		return "Resume";
	default:
		return "UNKNOWN link state";
	}
}

/**
 * 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, size_t size,
		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:
		snprintf(str, size, "Disconnect: [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_RESET:
		snprintf(str, size, "Reset [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_CONNECT_DONE:
		snprintf(str, size, "Connection Done [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
		snprintf(str, size, "Link Change [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_WAKEUP:
		snprintf(str, size, "WakeUp [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_SUSPEND:
		snprintf(str, size, "Suspend [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_SOF:
		snprintf(str, size, "Start-Of-Frame [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
		snprintf(str, size, "Erratic Error [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_CMD_CMPL:
		snprintf(str, size, "Command Complete [%s]",
				dwc3_gadget_link_string(state));
		break;
	case DWC3_DEVICE_EVENT_OVERFLOW:
		snprintf(str, size, "Overflow [%s]",
				dwc3_gadget_link_string(state));
		break;
	default:
		snprintf(str, size, "UNKNOWN");
	}

	return str;
}

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

	len = scnprintf(str, size, "ep%d%s: ", epnum >> 1,
			(epnum & 1) ? "in" : "out");

	status = event->status;

	switch (event->endpoint_event) {
	case DWC3_DEPEVT_XFERCOMPLETE:
		len += scnprintf(str + len, size - len,
				"Transfer Complete (%c%c%c)",
				status & DEPEVT_STATUS_SHORT ? 'S' : 's',
				status & DEPEVT_STATUS_IOC ? 'I' : 'i',
				status & DEPEVT_STATUS_LST ? 'L' : 'l');

		if (epnum <= 1)
			scnprintf(str + len, size - len, " [%s]",
					dwc3_ep0_state_string(ep0state));
		break;
	case DWC3_DEPEVT_XFERINPROGRESS:
		scnprintf(str + len, size - len,
				"Transfer In Progress [%08x] (%c%c%c)",
				event->parameters,
				status & DEPEVT_STATUS_SHORT ? 'S' : 's',
				status & DEPEVT_STATUS_IOC ? 'I' : 'i',
				status & DEPEVT_STATUS_LST ? 'M' : 'm');
		break;
	case DWC3_DEPEVT_XFERNOTREADY:
		len += scnprintf(str + len, size - len,
				"Transfer Not Ready [%08x]%s",
				event->parameters,
				status & DEPEVT_STATUS_TRANSFER_ACTIVE ?
				" (Active)" : " (Not Active)");

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

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

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

		break;
	case DWC3_DEPEVT_EPCMDCMPLT:
		scnprintf(str + len, size - len, "Endpoint Command Complete");
		break;
	default:
		scnprintf(str + len, size - len, "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_SUSPEND:
		return "Suspend";
	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, size_t size, u32 event,
		u32 ep0state)
{
	union dwc3_event evt;

	memcpy(&evt, &event, sizeof(event));

	if (evt.type.is_devspec)
		return dwc3_gadget_event_string(str, size, &evt.devt);
	else
		return dwc3_ep_event_string(str, size, &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_create_endpoint_dir(struct dwc3_ep *dep);
extern void dwc3_debugfs_init(struct dwc3 *d);
extern void dwc3_debugfs_exit(struct dwc3 *d);
#else
static inline void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep)
{  }
static inline void dwc3_debugfs_init(struct dwc3 *d)
{  }
static inline void dwc3_debugfs_exit(struct dwc3 *d)
{  }
#endif
#endif /* __DWC3_DEBUG_H */