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1// SPDX-License-Identifier: GPL-2.0
2/**
3 * debug.h - DesignWare USB3 DRD Controller Debug Header
4 *
5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 *
7 * Authors: Felipe Balbi <balbi@ti.com>,
8 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 */
10
11#ifndef __DWC3_DEBUG_H
12#define __DWC3_DEBUG_H
13
14#include "core.h"
15
16/**
17 * dwc3_gadget_ep_cmd_string - returns endpoint command string
18 * @cmd: command code
19 */
20static inline const char *
21dwc3_gadget_ep_cmd_string(u8 cmd)
22{
23 switch (cmd) {
24 case DWC3_DEPCMD_DEPSTARTCFG:
25 return "Start New Configuration";
26 case DWC3_DEPCMD_ENDTRANSFER:
27 return "End Transfer";
28 case DWC3_DEPCMD_UPDATETRANSFER:
29 return "Update Transfer";
30 case DWC3_DEPCMD_STARTTRANSFER:
31 return "Start Transfer";
32 case DWC3_DEPCMD_CLEARSTALL:
33 return "Clear Stall";
34 case DWC3_DEPCMD_SETSTALL:
35 return "Set Stall";
36 case DWC3_DEPCMD_GETEPSTATE:
37 return "Get Endpoint State";
38 case DWC3_DEPCMD_SETTRANSFRESOURCE:
39 return "Set Endpoint Transfer Resource";
40 case DWC3_DEPCMD_SETEPCONFIG:
41 return "Set Endpoint Configuration";
42 default:
43 return "UNKNOWN command";
44 }
45}
46
47/**
48 * dwc3_gadget_generic_cmd_string - returns generic command string
49 * @cmd: command code
50 */
51static inline const char *
52dwc3_gadget_generic_cmd_string(u8 cmd)
53{
54 switch (cmd) {
55 case DWC3_DGCMD_SET_LMP:
56 return "Set LMP";
57 case DWC3_DGCMD_SET_PERIODIC_PAR:
58 return "Set Periodic Parameters";
59 case DWC3_DGCMD_XMIT_FUNCTION:
60 return "Transmit Function Wake Device Notification";
61 case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO:
62 return "Set Scratchpad Buffer Array Address Lo";
63 case DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI:
64 return "Set Scratchpad Buffer Array Address Hi";
65 case DWC3_DGCMD_SELECTED_FIFO_FLUSH:
66 return "Selected FIFO Flush";
67 case DWC3_DGCMD_ALL_FIFO_FLUSH:
68 return "All FIFO Flush";
69 case DWC3_DGCMD_SET_ENDPOINT_NRDY:
70 return "Set Endpoint NRDY";
71 case DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK:
72 return "Run SoC Bus Loopback Test";
73 default:
74 return "UNKNOWN";
75 }
76}
77
78/**
79 * dwc3_gadget_link_string - returns link name
80 * @link_state: link state code
81 */
82static inline const char *
83dwc3_gadget_link_string(enum dwc3_link_state link_state)
84{
85 switch (link_state) {
86 case DWC3_LINK_STATE_U0:
87 return "U0";
88 case DWC3_LINK_STATE_U1:
89 return "U1";
90 case DWC3_LINK_STATE_U2:
91 return "U2";
92 case DWC3_LINK_STATE_U3:
93 return "U3";
94 case DWC3_LINK_STATE_SS_DIS:
95 return "SS.Disabled";
96 case DWC3_LINK_STATE_RX_DET:
97 return "RX.Detect";
98 case DWC3_LINK_STATE_SS_INACT:
99 return "SS.Inactive";
100 case DWC3_LINK_STATE_POLL:
101 return "Polling";
102 case DWC3_LINK_STATE_RECOV:
103 return "Recovery";
104 case DWC3_LINK_STATE_HRESET:
105 return "Hot Reset";
106 case DWC3_LINK_STATE_CMPLY:
107 return "Compliance";
108 case DWC3_LINK_STATE_LPBK:
109 return "Loopback";
110 case DWC3_LINK_STATE_RESET:
111 return "Reset";
112 case DWC3_LINK_STATE_RESUME:
113 return "Resume";
114 default:
115 return "UNKNOWN link state\n";
116 }
117}
118
119/**
120 * dwc3_trb_type_string - returns TRB type as a string
121 * @type: the type of the TRB
122 */
123static inline const char *dwc3_trb_type_string(unsigned int type)
124{
125 switch (type) {
126 case DWC3_TRBCTL_NORMAL:
127 return "normal";
128 case DWC3_TRBCTL_CONTROL_SETUP:
129 return "setup";
130 case DWC3_TRBCTL_CONTROL_STATUS2:
131 return "status2";
132 case DWC3_TRBCTL_CONTROL_STATUS3:
133 return "status3";
134 case DWC3_TRBCTL_CONTROL_DATA:
135 return "data";
136 case DWC3_TRBCTL_ISOCHRONOUS_FIRST:
137 return "isoc-first";
138 case DWC3_TRBCTL_ISOCHRONOUS:
139 return "isoc";
140 case DWC3_TRBCTL_LINK_TRB:
141 return "link";
142 default:
143 return "UNKNOWN";
144 }
145}
146
147static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
148{
149 switch (state) {
150 case EP0_UNCONNECTED:
151 return "Unconnected";
152 case EP0_SETUP_PHASE:
153 return "Setup Phase";
154 case EP0_DATA_PHASE:
155 return "Data Phase";
156 case EP0_STATUS_PHASE:
157 return "Status Phase";
158 default:
159 return "UNKNOWN";
160 }
161}
162
163/**
164 * dwc3_gadget_event_string - returns event name
165 * @event: the event code
166 */
167static inline const char *
168dwc3_gadget_event_string(char *str, const struct dwc3_event_devt *event)
169{
170 enum dwc3_link_state state = event->event_info & DWC3_LINK_STATE_MASK;
171
172 switch (event->type) {
173 case DWC3_DEVICE_EVENT_DISCONNECT:
174 sprintf(str, "Disconnect: [%s]",
175 dwc3_gadget_link_string(state));
176 break;
177 case DWC3_DEVICE_EVENT_RESET:
178 sprintf(str, "Reset [%s]", dwc3_gadget_link_string(state));
179 break;
180 case DWC3_DEVICE_EVENT_CONNECT_DONE:
181 sprintf(str, "Connection Done [%s]",
182 dwc3_gadget_link_string(state));
183 break;
184 case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
185 sprintf(str, "Link Change [%s]",
186 dwc3_gadget_link_string(state));
187 break;
188 case DWC3_DEVICE_EVENT_WAKEUP:
189 sprintf(str, "WakeUp [%s]", dwc3_gadget_link_string(state));
190 break;
191 case DWC3_DEVICE_EVENT_EOPF:
192 sprintf(str, "End-Of-Frame [%s]",
193 dwc3_gadget_link_string(state));
194 break;
195 case DWC3_DEVICE_EVENT_SOF:
196 sprintf(str, "Start-Of-Frame [%s]",
197 dwc3_gadget_link_string(state));
198 break;
199 case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
200 sprintf(str, "Erratic Error [%s]",
201 dwc3_gadget_link_string(state));
202 break;
203 case DWC3_DEVICE_EVENT_CMD_CMPL:
204 sprintf(str, "Command Complete [%s]",
205 dwc3_gadget_link_string(state));
206 break;
207 case DWC3_DEVICE_EVENT_OVERFLOW:
208 sprintf(str, "Overflow [%s]", dwc3_gadget_link_string(state));
209 break;
210 default:
211 sprintf(str, "UNKNOWN");
212 }
213
214 return str;
215}
216
217static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str)
218{
219 switch (t & USB_RECIP_MASK) {
220 case USB_RECIP_INTERFACE:
221 sprintf(str, "Get Interface Status(Intf = %d, Length = %d)",
222 i, l);
223 break;
224 case USB_RECIP_ENDPOINT:
225 sprintf(str, "Get Endpoint Status(ep%d%s)",
226 i & ~USB_DIR_IN,
227 i & USB_DIR_IN ? "in" : "out");
228 break;
229 }
230}
231
232static inline void dwc3_decode_set_clear_feature(__u8 t, __u8 b, __u16 v,
233 __u16 i, char *str)
234{
235 switch (t & USB_RECIP_MASK) {
236 case USB_RECIP_DEVICE:
237 sprintf(str, "%s Device Feature(%s%s)",
238 b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
239 ({char *s;
240 switch (v) {
241 case USB_DEVICE_SELF_POWERED:
242 s = "Self Powered";
243 break;
244 case USB_DEVICE_REMOTE_WAKEUP:
245 s = "Remote Wakeup";
246 break;
247 case USB_DEVICE_TEST_MODE:
248 s = "Test Mode";
249 break;
250 case USB_DEVICE_U1_ENABLE:
251 s = "U1 Enable";
252 break;
253 case USB_DEVICE_U2_ENABLE:
254 s = "U2 Enable";
255 break;
256 case USB_DEVICE_LTM_ENABLE:
257 s = "LTM Enable";
258 break;
259 default:
260 s = "UNKNOWN";
261 } s; }),
262 v == USB_DEVICE_TEST_MODE ?
263 ({ char *s;
264 switch (i) {
265 case TEST_J:
266 s = ": TEST_J";
267 break;
268 case TEST_K:
269 s = ": TEST_K";
270 break;
271 case TEST_SE0_NAK:
272 s = ": TEST_SE0_NAK";
273 break;
274 case TEST_PACKET:
275 s = ": TEST_PACKET";
276 break;
277 case TEST_FORCE_EN:
278 s = ": TEST_FORCE_EN";
279 break;
280 default:
281 s = ": UNKNOWN";
282 } s; }) : "");
283 break;
284 case USB_RECIP_INTERFACE:
285 sprintf(str, "%s Interface Feature(%s)",
286 b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
287 v == USB_INTRF_FUNC_SUSPEND ?
288 "Function Suspend" : "UNKNOWN");
289 break;
290 case USB_RECIP_ENDPOINT:
291 sprintf(str, "%s Endpoint Feature(%s ep%d%s)",
292 b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
293 v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
294 i & ~USB_DIR_IN,
295 i & USB_DIR_IN ? "in" : "out");
296 break;
297 }
298}
299
300static inline void dwc3_decode_set_address(__u16 v, char *str)
301{
302 sprintf(str, "Set Address(Addr = %02x)", v);
303}
304
305static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v,
306 __u16 i, __u16 l, char *str)
307{
308 sprintf(str, "%s %s Descriptor(Index = %d, Length = %d)",
309 b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set",
310 ({ char *s;
311 switch (v >> 8) {
312 case USB_DT_DEVICE:
313 s = "Device";
314 break;
315 case USB_DT_CONFIG:
316 s = "Configuration";
317 break;
318 case USB_DT_STRING:
319 s = "String";
320 break;
321 case USB_DT_INTERFACE:
322 s = "Interface";
323 break;
324 case USB_DT_ENDPOINT:
325 s = "Endpoint";
326 break;
327 case USB_DT_DEVICE_QUALIFIER:
328 s = "Device Qualifier";
329 break;
330 case USB_DT_OTHER_SPEED_CONFIG:
331 s = "Other Speed Config";
332 break;
333 case USB_DT_INTERFACE_POWER:
334 s = "Interface Power";
335 break;
336 case USB_DT_OTG:
337 s = "OTG";
338 break;
339 case USB_DT_DEBUG:
340 s = "Debug";
341 break;
342 case USB_DT_INTERFACE_ASSOCIATION:
343 s = "Interface Association";
344 break;
345 case USB_DT_BOS:
346 s = "BOS";
347 break;
348 case USB_DT_DEVICE_CAPABILITY:
349 s = "Device Capability";
350 break;
351 case USB_DT_PIPE_USAGE:
352 s = "Pipe Usage";
353 break;
354 case USB_DT_SS_ENDPOINT_COMP:
355 s = "SS Endpoint Companion";
356 break;
357 case USB_DT_SSP_ISOC_ENDPOINT_COMP:
358 s = "SSP Isochronous Endpoint Companion";
359 break;
360 default:
361 s = "UNKNOWN";
362 break;
363 } s; }), v & 0xff, l);
364}
365
366
367static inline void dwc3_decode_get_configuration(__u16 l, char *str)
368{
369 sprintf(str, "Get Configuration(Length = %d)", l);
370}
371
372static inline void dwc3_decode_set_configuration(__u8 v, char *str)
373{
374 sprintf(str, "Set Configuration(Config = %d)", v);
375}
376
377static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str)
378{
379 sprintf(str, "Get Interface(Intf = %d, Length = %d)", i, l);
380}
381
382static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str)
383{
384 sprintf(str, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v);
385}
386
387static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str)
388{
389 sprintf(str, "Synch Frame(Endpoint = %d, Length = %d)", i, l);
390}
391
392static inline void dwc3_decode_set_sel(__u16 l, char *str)
393{
394 sprintf(str, "Set SEL(Length = %d)", l);
395}
396
397static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str)
398{
399 sprintf(str, "Set Isochronous Delay(Delay = %d ns)", v);
400}
401
402/**
403 * dwc3_decode_ctrl - returns a string represetion of ctrl request
404 */
405static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType,
406 __u8 bRequest, __u16 wValue, __u16 wIndex, __u16 wLength)
407{
408 switch (bRequest) {
409 case USB_REQ_GET_STATUS:
410 dwc3_decode_get_status(bRequestType, wIndex, wLength, str);
411 break;
412 case USB_REQ_CLEAR_FEATURE:
413 case USB_REQ_SET_FEATURE:
414 dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue,
415 wIndex, str);
416 break;
417 case USB_REQ_SET_ADDRESS:
418 dwc3_decode_set_address(wValue, str);
419 break;
420 case USB_REQ_GET_DESCRIPTOR:
421 case USB_REQ_SET_DESCRIPTOR:
422 dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue,
423 wIndex, wLength, str);
424 break;
425 case USB_REQ_GET_CONFIGURATION:
426 dwc3_decode_get_configuration(wLength, str);
427 break;
428 case USB_REQ_SET_CONFIGURATION:
429 dwc3_decode_set_configuration(wValue, str);
430 break;
431 case USB_REQ_GET_INTERFACE:
432 dwc3_decode_get_intf(wIndex, wLength, str);
433 break;
434 case USB_REQ_SET_INTERFACE:
435 dwc3_decode_set_intf(wValue, wIndex, str);
436 break;
437 case USB_REQ_SYNCH_FRAME:
438 dwc3_decode_synch_frame(wIndex, wLength, str);
439 break;
440 case USB_REQ_SET_SEL:
441 dwc3_decode_set_sel(wLength, str);
442 break;
443 case USB_REQ_SET_ISOCH_DELAY:
444 dwc3_decode_set_isoch_delay(wValue, str);
445 break;
446 default:
447 sprintf(str, "%02x %02x %02x %02x %02x %02x %02x %02x",
448 bRequestType, bRequest,
449 cpu_to_le16(wValue) & 0xff,
450 cpu_to_le16(wValue) >> 8,
451 cpu_to_le16(wIndex) & 0xff,
452 cpu_to_le16(wIndex) >> 8,
453 cpu_to_le16(wLength) & 0xff,
454 cpu_to_le16(wLength) >> 8);
455 }
456
457 return str;
458}
459
460/**
461 * dwc3_ep_event_string - returns event name
462 * @event: then event code
463 */
464static inline const char *
465dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event,
466 u32 ep0state)
467{
468 u8 epnum = event->endpoint_number;
469 size_t len;
470 int status;
471 int ret;
472
473 ret = sprintf(str, "ep%d%s: ", epnum >> 1,
474 (epnum & 1) ? "in" : "out");
475 if (ret < 0)
476 return "UNKNOWN";
477
478 switch (event->endpoint_event) {
479 case DWC3_DEPEVT_XFERCOMPLETE:
480 strcat(str, "Transfer Complete");
481 len = strlen(str);
482
483 if (epnum <= 1)
484 sprintf(str + len, " [%s]", dwc3_ep0_state_string(ep0state));
485 break;
486 case DWC3_DEPEVT_XFERINPROGRESS:
487 strcat(str, "Transfer In-Progress");
488 break;
489 case DWC3_DEPEVT_XFERNOTREADY:
490 strcat(str, "Transfer Not Ready");
491 status = event->status & DEPEVT_STATUS_TRANSFER_ACTIVE;
492 strcat(str, status ? " (Active)" : " (Not Active)");
493
494 /* Control Endpoints */
495 if (epnum <= 1) {
496 int phase = DEPEVT_STATUS_CONTROL_PHASE(event->status);
497
498 switch (phase) {
499 case DEPEVT_STATUS_CONTROL_DATA:
500 strcat(str, " [Data Phase]");
501 break;
502 case DEPEVT_STATUS_CONTROL_STATUS:
503 strcat(str, " [Status Phase]");
504 }
505 }
506 break;
507 case DWC3_DEPEVT_RXTXFIFOEVT:
508 strcat(str, "FIFO");
509 break;
510 case DWC3_DEPEVT_STREAMEVT:
511 status = event->status;
512
513 switch (status) {
514 case DEPEVT_STREAMEVT_FOUND:
515 sprintf(str + ret, " Stream %d Found",
516 event->parameters);
517 break;
518 case DEPEVT_STREAMEVT_NOTFOUND:
519 default:
520 strcat(str, " Stream Not Found");
521 break;
522 }
523
524 break;
525 case DWC3_DEPEVT_EPCMDCMPLT:
526 strcat(str, "Endpoint Command Complete");
527 break;
528 default:
529 sprintf(str, "UNKNOWN");
530 }
531
532 return str;
533}
534
535/**
536 * dwc3_gadget_event_type_string - return event name
537 * @event: the event code
538 */
539static inline const char *dwc3_gadget_event_type_string(u8 event)
540{
541 switch (event) {
542 case DWC3_DEVICE_EVENT_DISCONNECT:
543 return "Disconnect";
544 case DWC3_DEVICE_EVENT_RESET:
545 return "Reset";
546 case DWC3_DEVICE_EVENT_CONNECT_DONE:
547 return "Connect Done";
548 case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
549 return "Link Status Change";
550 case DWC3_DEVICE_EVENT_WAKEUP:
551 return "Wake-Up";
552 case DWC3_DEVICE_EVENT_HIBER_REQ:
553 return "Hibernation";
554 case DWC3_DEVICE_EVENT_EOPF:
555 return "End of Periodic Frame";
556 case DWC3_DEVICE_EVENT_SOF:
557 return "Start of Frame";
558 case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
559 return "Erratic Error";
560 case DWC3_DEVICE_EVENT_CMD_CMPL:
561 return "Command Complete";
562 case DWC3_DEVICE_EVENT_OVERFLOW:
563 return "Overflow";
564 default:
565 return "UNKNOWN";
566 }
567}
568
569static inline const char *dwc3_decode_event(char *str, u32 event, u32 ep0state)
570{
571 const union dwc3_event evt = (union dwc3_event) event;
572
573 if (evt.type.is_devspec)
574 return dwc3_gadget_event_string(str, &evt.devt);
575 else
576 return dwc3_ep_event_string(str, &evt.depevt, ep0state);
577}
578
579static inline const char *dwc3_ep_cmd_status_string(int status)
580{
581 switch (status) {
582 case -ETIMEDOUT:
583 return "Timed Out";
584 case 0:
585 return "Successful";
586 case DEPEVT_TRANSFER_NO_RESOURCE:
587 return "No Resource";
588 case DEPEVT_TRANSFER_BUS_EXPIRY:
589 return "Bus Expiry";
590 default:
591 return "UNKNOWN";
592 }
593}
594
595static inline const char *dwc3_gadget_generic_cmd_status_string(int status)
596{
597 switch (status) {
598 case -ETIMEDOUT:
599 return "Timed Out";
600 case 0:
601 return "Successful";
602 case 1:
603 return "Error";
604 default:
605 return "UNKNOWN";
606 }
607}
608
609
610#ifdef CONFIG_DEBUG_FS
611extern void dwc3_debugfs_init(struct dwc3 *);
612extern void dwc3_debugfs_exit(struct dwc3 *);
613#else
614static inline void dwc3_debugfs_init(struct dwc3 *d)
615{ }
616static inline void dwc3_debugfs_exit(struct dwc3 *d)
617{ }
618#endif
619#endif /* __DWC3_DEBUG_H */