drivers/usb/dwc3/debug.h

   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 <[email protected]>,
   8  *          Sebastian Andrzej Siewior <[email protected]>
   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  */
  20 static inline const char *
  21 dwc3_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  */
  51 static inline const char *
  52 dwc3_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  */
  82 static inline const char *
  83 dwc3_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  */
 123 static 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
 147 static 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  */
 167 static inline const char *
 168 dwc3_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
 217 static 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
 232 static 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                                 default:
 251                                         s = "UNKNOWN";
 252                                 } s; }),
 253                         v == USB_DEVICE_TEST_MODE ?
 254                         ({ char *s;
 255                                 switch (i) {
 256                                 case TEST_J:
 257                                         s = ": TEST_J";
 258                                         break;
 259                                 case TEST_K:
 260                                         s = ": TEST_K";
 261                                         break;
 262                                 case TEST_SE0_NAK:
 263                                         s = ": TEST_SE0_NAK";
 264                                         break;
 265                                 case TEST_PACKET:
 266                                         s = ": TEST_PACKET";
 267                                         break;
 268                                 case TEST_FORCE_EN:
 269                                         s = ": TEST_FORCE_EN";
 270                                         break;
 271                                 default:
 272                                         s = ": UNKNOWN";
 273                                 } s; }) : "");
 274                 break;
 275         case USB_RECIP_INTERFACE:
 276                 sprintf(str, "%s Interface Feature(%s)",
 277                         b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
 278                         v == USB_INTRF_FUNC_SUSPEND ?
 279                         "Function Suspend" : "UNKNOWN");
 280                 break;
 281         case USB_RECIP_ENDPOINT:
 282                 sprintf(str, "%s Endpoint Feature(%s ep%d%s)",
 283                         b == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
 284                         v == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
 285                         i & ~USB_DIR_IN,
 286                         i & USB_DIR_IN ? "in" : "out");
 287                 break;
 288         }
 289 }
 290
 291 static inline void dwc3_decode_set_address(__u16 v, char *str)
 292 {
 293         sprintf(str, "Set Address(Addr = %02x)", v);
 294 }
 295
 296 static inline void dwc3_decode_get_set_descriptor(__u8 t, __u8 b, __u16 v,
 297                                                   __u16 i, __u16 l, char *str)
 298 {
 299         sprintf(str, "%s %s Descriptor(Index = %d, Length = %d)",
 300                 b == USB_REQ_GET_DESCRIPTOR ? "Get" : "Set",
 301                 ({ char *s;
 302                         switch (v >> 8) {
 303                         case USB_DT_DEVICE:
 304                                 s = "Device";
 305                                 break;
 306                         case USB_DT_CONFIG:
 307                                 s = "Configuration";
 308                                 break;
 309                         case USB_DT_STRING:
 310                                 s = "String";
 311                                 break;
 312                         case USB_DT_INTERFACE:
 313                                 s = "Interface";
 314                                 break;
 315                         case USB_DT_ENDPOINT:
 316                                 s = "Endpoint";
 317                                 break;
 318                         case USB_DT_DEVICE_QUALIFIER:
 319                                 s = "Device Qualifier";
 320                                 break;
 321                         case USB_DT_OTHER_SPEED_CONFIG:
 322                                 s = "Other Speed Config";
 323                                 break;
 324                         case USB_DT_INTERFACE_POWER:
 325                                 s = "Interface Power";
 326                                 break;
 327                         case USB_DT_OTG:
 328                                 s = "OTG";
 329                                 break;
 330                         case USB_DT_DEBUG:
 331                                 s = "Debug";
 332                                 break;
 333                         case USB_DT_INTERFACE_ASSOCIATION:
 334                                 s = "Interface Association";
 335                                 break;
 336                         case USB_DT_BOS:
 337                                 s = "BOS";
 338                                 break;
 339                         case USB_DT_DEVICE_CAPABILITY:
 340                                 s = "Device Capability";
 341                                 break;
 342                         case USB_DT_PIPE_USAGE:
 343                                 s = "Pipe Usage";
 344                                 break;
 345                         case USB_DT_SS_ENDPOINT_COMP:
 346                                 s = "SS Endpoint Companion";
 347                                 break;
 348                         case USB_DT_SSP_ISOC_ENDPOINT_COMP:
 349                                 s = "SSP Isochronous Endpoint Companion";
 350                                 break;
 351                         default:
 352                                 s = "UNKNOWN";
 353                                 break;
 354                         } s; }), v & 0xff, l);
 355 }
 356
 357
 358 static inline void dwc3_decode_get_configuration(__u16 l, char *str)
 359 {
 360         sprintf(str, "Get Configuration(Length = %d)", l);
 361 }
 362
 363 static inline void dwc3_decode_set_configuration(__u8 v, char *str)
 364 {
 365         sprintf(str, "Set Configuration(Config = %d)", v);
 366 }
 367
 368 static inline void dwc3_decode_get_intf(__u16 i, __u16 l, char *str)
 369 {
 370         sprintf(str, "Get Interface(Intf = %d, Length = %d)", i, l);
 371 }
 372
 373 static inline void dwc3_decode_set_intf(__u8 v, __u16 i, char *str)
 374 {
 375         sprintf(str, "Set Interface(Intf = %d, Alt.Setting = %d)", i, v);
 376 }
 377
 378 static inline void dwc3_decode_synch_frame(__u16 i, __u16 l, char *str)
 379 {
 380         sprintf(str, "Synch Frame(Endpoint = %d, Length = %d)", i, l);
 381 }
 382
 383 static inline void dwc3_decode_set_sel(__u16 l, char *str)
 384 {
 385         sprintf(str, "Set SEL(Length = %d)", l);
 386 }
 387
 388 static inline void dwc3_decode_set_isoch_delay(__u8 v, char *str)
 389 {
 390         sprintf(str, "Set Isochronous Delay(Delay = %d ns)", v);
 391 }
 392
 393 /**
 394  * dwc3_decode_ctrl - returns a string represetion of ctrl request
 395  */
 396 static inline const char *dwc3_decode_ctrl(char *str, __u8 bRequestType,
 397                 __u8 bRequest, __u16 wValue, __u16 wIndex, __u16 wLength)
 398 {
 399         switch (bRequest) {
 400         case USB_REQ_GET_STATUS:
 401                 dwc3_decode_get_status(bRequestType, wIndex, wLength, str);
 402                 break;
 403         case USB_REQ_CLEAR_FEATURE:
 404         case USB_REQ_SET_FEATURE:
 405                 dwc3_decode_set_clear_feature(bRequestType, bRequest, wValue,
 406                                               wIndex, str);
 407                 break;
 408         case USB_REQ_SET_ADDRESS:
 409                 dwc3_decode_set_address(wValue, str);
 410                 break;
 411         case USB_REQ_GET_DESCRIPTOR:
 412         case USB_REQ_SET_DESCRIPTOR:
 413                 dwc3_decode_get_set_descriptor(bRequestType, bRequest, wValue,
 414                                                wIndex, wLength, str);
 415                 break;
 416         case USB_REQ_GET_CONFIGURATION:
 417                 dwc3_decode_get_configuration(wLength, str);
 418                 break;
 419         case USB_REQ_SET_CONFIGURATION:
 420                 dwc3_decode_set_configuration(wValue, str);
 421                 break;
 422         case USB_REQ_GET_INTERFACE:
 423                 dwc3_decode_get_intf(wIndex, wLength, str);
 424                 break;
 425         case USB_REQ_SET_INTERFACE:
 426                 dwc3_decode_set_intf(wValue, wIndex, str);
 427                 break;
 428         case USB_REQ_SYNCH_FRAME:
 429                 dwc3_decode_synch_frame(wIndex, wLength, str);
 430                 break;
 431         case USB_REQ_SET_SEL:
 432                 dwc3_decode_set_sel(wLength, str);
 433                 break;
 434         case USB_REQ_SET_ISOCH_DELAY:
 435                 dwc3_decode_set_isoch_delay(wValue, str);
 436                 break;
 437         default:
 438                 sprintf(str, "%02x %02x %02x %02x %02x %02x %02x %02x",
 439                         bRequestType, bRequest,
 440                         cpu_to_le16(wValue) & 0xff,
 441                         cpu_to_le16(wValue) >> 8,
 442                         cpu_to_le16(wIndex) & 0xff,
 443                         cpu_to_le16(wIndex) >> 8,
 444                         cpu_to_le16(wLength) & 0xff,
 445                         cpu_to_le16(wLength) >> 8);
 446         }
 447
 448         return str;
 449 }
 450
 451 /**
 452  * dwc3_ep_event_string - returns event name
 453  * @event: then event code
 454  */
 455 static inline const char *
 456 dwc3_ep_event_string(char *str, const struct dwc3_event_depevt *event,
 457                      u32 ep0state)
 458 {
 459         u8 epnum = event->endpoint_number;
 460         size_t len;
 461         int status;
 462         int ret;
 463
 464         ret = sprintf(str, "ep%d%s: ", epnum >> 1,
 465                         (epnum & 1) ? "in" : "out");
 466         if (ret < 0)
 467                 return "UNKNOWN";
 468
 469         switch (event->endpoint_event) {
 470         case DWC3_DEPEVT_XFERCOMPLETE:
 471                 strcat(str, "Transfer Complete");
 472                 len = strlen(str);
 473
 474                 if (epnum <= 1)
 475                         sprintf(str + len, " [%s]", dwc3_ep0_state_string(ep0state));
 476                 break;
 477         case DWC3_DEPEVT_XFERINPROGRESS:
 478                 strcat(str, "Transfer In-Progress");
 479                 break;
 480         case DWC3_DEPEVT_XFERNOTREADY:
 481                 strcat(str, "Transfer Not Ready");
 482                 status = event->status & DEPEVT_STATUS_TRANSFER_ACTIVE;
 483                 strcat(str, status ? " (Active)" : " (Not Active)");
 484
 485                 /* Control Endpoints */
 486                 if (epnum <= 1) {
 487                         int phase = DEPEVT_STATUS_CONTROL_PHASE(event->status);
 488
 489                         switch (phase) {
 490                         case DEPEVT_STATUS_CONTROL_DATA:
 491                                 strcat(str, " [Data Phase]");
 492                                 break;
 493                         case DEPEVT_STATUS_CONTROL_STATUS:
 494                                 strcat(str, " [Status Phase]");
 495                         }
 496                 }
 497                 break;
 498         case DWC3_DEPEVT_RXTXFIFOEVT:
 499                 strcat(str, "FIFO");
 500                 break;
 501         case DWC3_DEPEVT_STREAMEVT:
 502                 status = event->status;
 503
 504                 switch (status) {
 505                 case DEPEVT_STREAMEVT_FOUND:
 506                         sprintf(str + ret, " Stream %d Found",
 507                                         event->parameters);
 508                         break;
 509                 case DEPEVT_STREAMEVT_NOTFOUND:
 510                 default:
 511                         strcat(str, " Stream Not Found");
 512                         break;
 513                 }
 514
 515                 break;
 516         case DWC3_DEPEVT_EPCMDCMPLT:
 517                 strcat(str, "Endpoint Command Complete");
 518                 break;
 519         default:
 520                 sprintf(str, "UNKNOWN");
 521         }
 522
 523         return str;
 524 }
 525
 526 /**
 527  * dwc3_gadget_event_type_string - return event name
 528  * @event: the event code
 529  */
 530 static inline const char *dwc3_gadget_event_type_string(u8 event)
 531 {
 532         switch (event) {
 533         case DWC3_DEVICE_EVENT_DISCONNECT:
 534                 return "Disconnect";
 535         case DWC3_DEVICE_EVENT_RESET:
 536                 return "Reset";
 537         case DWC3_DEVICE_EVENT_CONNECT_DONE:
 538                 return "Connect Done";
 539         case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
 540                 return "Link Status Change";
 541         case DWC3_DEVICE_EVENT_WAKEUP:
 542                 return "Wake-Up";
 543         case DWC3_DEVICE_EVENT_HIBER_REQ:
 544                 return "Hibernation";
 545         case DWC3_DEVICE_EVENT_EOPF:
 546                 return "End of Periodic Frame";
 547         case DWC3_DEVICE_EVENT_SOF:
 548                 return "Start of Frame";
 549         case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
 550                 return "Erratic Error";
 551         case DWC3_DEVICE_EVENT_CMD_CMPL:
 552                 return "Command Complete";
 553         case DWC3_DEVICE_EVENT_OVERFLOW:
 554                 return "Overflow";
 555         default:
 556                 return "UNKNOWN";
 557         }
 558 }
 559
 560 static inline const char *dwc3_decode_event(char *str, u32 event, u32 ep0state)
 561 {
 562         const union dwc3_event evt = (union dwc3_event) event;
 563
 564         if (evt.type.is_devspec)
 565                 return dwc3_gadget_event_string(str, &evt.devt);
 566         else
 567                 return dwc3_ep_event_string(str, &evt.depevt, ep0state);
 568 }
 569
 570 static inline const char *dwc3_ep_cmd_status_string(int status)
 571 {
 572         switch (status) {
 573         case -ETIMEDOUT:
 574                 return "Timed Out";
 575         case 0:
 576                 return "Successful";
 577         case DEPEVT_TRANSFER_NO_RESOURCE:
 578                 return "No Resource";
 579         case DEPEVT_TRANSFER_BUS_EXPIRY:
 580                 return "Bus Expiry";
 581         default:
 582                 return "UNKNOWN";
 583         }
 584 }
 585
 586 static inline const char *dwc3_gadget_generic_cmd_status_string(int status)
 587 {
 588         switch (status) {
 589         case -ETIMEDOUT:
 590                 return "Timed Out";
 591         case 0:
 592                 return "Successful";
 593         case 1:
 594                 return "Error";
 595         default:
 596                 return "UNKNOWN";
 597         }
 598 }
 599
 600
 601 #ifdef CONFIG_DEBUG_FS
 602 extern void dwc3_debugfs_init(struct dwc3 *);
 603 extern void dwc3_debugfs_exit(struct dwc3 *);
 604 #else
 605 static inline void dwc3_debugfs_init(struct dwc3 *d)
 606 {  }
 607 static inline void dwc3_debugfs_exit(struct dwc3 *d)
 608 {  }
 609 #endif
 610 #endif /* __DWC3_DEBUG_H */