1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * debugfs.c - Designware USB2 DRD controller debugfs 4 * 5 * Copyright (C) 2015 Intel Corporation 6 * Mian Yousaf Kaukab <yousaf.kaukab@intel.com> 7 */ 8 9 #include <linux/spinlock.h> 10 #include <linux/debugfs.h> 11 #include <linux/seq_file.h> 12 #include <linux/uaccess.h> 13 14 #include "core.h" 15 #include "debug.h" 16 17 #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ 18 IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) 19 20 /** 21 * testmode_write() - change usb test mode state. 22 * @file: The file to write to. 23 * @ubuf: The buffer where user wrote. 24 * @count: The ubuf size. 25 * @ppos: Unused parameter. 26 */ 27 static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t 28 count, loff_t *ppos) 29 { 30 struct seq_file *s = file->private_data; 31 struct dwc2_hsotg *hsotg = s->private; 32 unsigned long flags; 33 u32 testmode = 0; 34 char buf[32]; 35 36 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) 37 return -EFAULT; 38 39 if (!strncmp(buf, "test_j", 6)) 40 testmode = TEST_J; 41 else if (!strncmp(buf, "test_k", 6)) 42 testmode = TEST_K; 43 else if (!strncmp(buf, "test_se0_nak", 12)) 44 testmode = TEST_SE0_NAK; 45 else if (!strncmp(buf, "test_packet", 11)) 46 testmode = TEST_PACKET; 47 else if (!strncmp(buf, "test_force_enable", 17)) 48 testmode = TEST_FORCE_EN; 49 else 50 testmode = 0; 51 52 spin_lock_irqsave(&hsotg->lock, flags); 53 dwc2_hsotg_set_test_mode(hsotg, testmode); 54 spin_unlock_irqrestore(&hsotg->lock, flags); 55 return count; 56 } 57 58 /** 59 * testmode_show() - debugfs: show usb test mode state 60 * @s: The seq file to write to. 61 * @unused: Unused parameter. 62 * 63 * This debugfs entry shows which usb test mode is currently enabled. 64 */ 65 static int testmode_show(struct seq_file *s, void *unused) 66 { 67 struct dwc2_hsotg *hsotg = s->private; 68 unsigned long flags; 69 int dctl; 70 71 spin_lock_irqsave(&hsotg->lock, flags); 72 dctl = dwc2_readl(hsotg, DCTL); 73 dctl &= DCTL_TSTCTL_MASK; 74 dctl >>= DCTL_TSTCTL_SHIFT; 75 spin_unlock_irqrestore(&hsotg->lock, flags); 76 77 switch (dctl) { 78 case 0: 79 seq_puts(s, "no test\n"); 80 break; 81 case TEST_J: 82 seq_puts(s, "test_j\n"); 83 break; 84 case TEST_K: 85 seq_puts(s, "test_k\n"); 86 break; 87 case TEST_SE0_NAK: 88 seq_puts(s, "test_se0_nak\n"); 89 break; 90 case TEST_PACKET: 91 seq_puts(s, "test_packet\n"); 92 break; 93 case TEST_FORCE_EN: 94 seq_puts(s, "test_force_enable\n"); 95 break; 96 default: 97 seq_printf(s, "UNKNOWN %d\n", dctl); 98 } 99 100 return 0; 101 } 102 103 static int testmode_open(struct inode *inode, struct file *file) 104 { 105 return single_open(file, testmode_show, inode->i_private); 106 } 107 108 static const struct file_operations testmode_fops = { 109 .owner = THIS_MODULE, 110 .open = testmode_open, 111 .write = testmode_write, 112 .read = seq_read, 113 .llseek = seq_lseek, 114 .release = single_release, 115 }; 116 117 /** 118 * state_show - debugfs: show overall driver and device state. 119 * @seq: The seq file to write to. 120 * @v: Unused parameter. 121 * 122 * This debugfs entry shows the overall state of the hardware and 123 * some general information about each of the endpoints available 124 * to the system. 125 */ 126 static int state_show(struct seq_file *seq, void *v) 127 { 128 struct dwc2_hsotg *hsotg = seq->private; 129 int idx; 130 131 seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", 132 dwc2_readl(hsotg, DCFG), 133 dwc2_readl(hsotg, DCTL), 134 dwc2_readl(hsotg, DSTS)); 135 136 seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", 137 dwc2_readl(hsotg, DIEPMSK), dwc2_readl(hsotg, DOEPMSK)); 138 139 seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", 140 dwc2_readl(hsotg, GINTMSK), 141 dwc2_readl(hsotg, GINTSTS)); 142 143 seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", 144 dwc2_readl(hsotg, DAINTMSK), 145 dwc2_readl(hsotg, DAINT)); 146 147 seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", 148 dwc2_readl(hsotg, GNPTXSTS), 149 dwc2_readl(hsotg, GRXSTSR)); 150 151 seq_puts(seq, "\nEndpoint status:\n"); 152 153 for (idx = 0; idx < hsotg->num_of_eps; idx++) { 154 u32 in, out; 155 156 in = dwc2_readl(hsotg, DIEPCTL(idx)); 157 out = dwc2_readl(hsotg, DOEPCTL(idx)); 158 159 seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", 160 idx, in, out); 161 162 in = dwc2_readl(hsotg, DIEPTSIZ(idx)); 163 out = dwc2_readl(hsotg, DOEPTSIZ(idx)); 164 165 seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", 166 in, out); 167 168 seq_puts(seq, "\n"); 169 } 170 171 return 0; 172 } 173 DEFINE_SHOW_ATTRIBUTE(state); 174 175 /** 176 * fifo_show - debugfs: show the fifo information 177 * @seq: The seq_file to write data to. 178 * @v: Unused parameter. 179 * 180 * Show the FIFO information for the overall fifo and all the 181 * periodic transmission FIFOs. 182 */ 183 static int fifo_show(struct seq_file *seq, void *v) 184 { 185 struct dwc2_hsotg *hsotg = seq->private; 186 u32 val; 187 int idx; 188 189 seq_puts(seq, "Non-periodic FIFOs:\n"); 190 seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(hsotg, GRXFSIZ)); 191 192 val = dwc2_readl(hsotg, GNPTXFSIZ); 193 seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", 194 val >> FIFOSIZE_DEPTH_SHIFT, 195 val & FIFOSIZE_STARTADDR_MASK); 196 197 seq_puts(seq, "\nPeriodic TXFIFOs:\n"); 198 199 for (idx = 1; idx < hsotg->num_of_eps; idx++) { 200 val = dwc2_readl(hsotg, DPTXFSIZN(idx)); 201 202 seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, 203 val >> FIFOSIZE_DEPTH_SHIFT, 204 val & FIFOSIZE_STARTADDR_MASK); 205 } 206 207 return 0; 208 } 209 DEFINE_SHOW_ATTRIBUTE(fifo); 210 211 static const char *decode_direction(int is_in) 212 { 213 return is_in ? "in" : "out"; 214 } 215 216 /** 217 * ep_show - debugfs: show the state of an endpoint. 218 * @seq: The seq_file to write data to. 219 * @v: Unused parameter. 220 * 221 * This debugfs entry shows the state of the given endpoint (one is 222 * registered for each available). 223 */ 224 static int ep_show(struct seq_file *seq, void *v) 225 { 226 struct dwc2_hsotg_ep *ep = seq->private; 227 struct dwc2_hsotg *hsotg = ep->parent; 228 struct dwc2_hsotg_req *req; 229 int index = ep->index; 230 int show_limit = 15; 231 unsigned long flags; 232 233 seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", 234 ep->index, ep->ep.name, decode_direction(ep->dir_in)); 235 236 /* first show the register state */ 237 238 seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", 239 dwc2_readl(hsotg, DIEPCTL(index)), 240 dwc2_readl(hsotg, DOEPCTL(index))); 241 242 seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", 243 dwc2_readl(hsotg, DIEPDMA(index)), 244 dwc2_readl(hsotg, DOEPDMA(index))); 245 246 seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", 247 dwc2_readl(hsotg, DIEPINT(index)), 248 dwc2_readl(hsotg, DOEPINT(index))); 249 250 seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", 251 dwc2_readl(hsotg, DIEPTSIZ(index)), 252 dwc2_readl(hsotg, DOEPTSIZ(index))); 253 254 seq_puts(seq, "\n"); 255 seq_printf(seq, "mps %d\n", ep->ep.maxpacket); 256 seq_printf(seq, "total_data=%ld\n", ep->total_data); 257 258 seq_printf(seq, "request list (%p,%p):\n", 259 ep->queue.next, ep->queue.prev); 260 261 spin_lock_irqsave(&hsotg->lock, flags); 262 263 list_for_each_entry(req, &ep->queue, queue) { 264 if (--show_limit < 0) { 265 seq_puts(seq, "not showing more requests...\n"); 266 break; 267 } 268 269 seq_printf(seq, "%c req %p: %d bytes @%p, ", 270 req == ep->req ? '*' : ' ', 271 req, req->req.length, req->req.buf); 272 seq_printf(seq, "%d done, res %d\n", 273 req->req.actual, req->req.status); 274 } 275 276 spin_unlock_irqrestore(&hsotg->lock, flags); 277 278 return 0; 279 } 280 DEFINE_SHOW_ATTRIBUTE(ep); 281 282 /** 283 * dwc2_hsotg_create_debug - create debugfs directory and files 284 * @hsotg: The driver state 285 * 286 * Create the debugfs files to allow the user to get information 287 * about the state of the system. The directory name is created 288 * with the same name as the device itself, in case we end up 289 * with multiple blocks in future systems. 290 */ 291 static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) 292 { 293 struct dentry *root; 294 unsigned int epidx; 295 296 root = hsotg->debug_root; 297 298 /* create general state file */ 299 debugfs_create_file("state", 0444, root, hsotg, &state_fops); 300 debugfs_create_file("testmode", 0644, root, hsotg, &testmode_fops); 301 debugfs_create_file("fifo", 0444, root, hsotg, &fifo_fops); 302 303 /* Create one file for each out endpoint */ 304 for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 305 struct dwc2_hsotg_ep *ep; 306 307 ep = hsotg->eps_out[epidx]; 308 if (ep) 309 debugfs_create_file(ep->name, 0444, root, ep, &ep_fops); 310 } 311 /* Create one file for each in endpoint. EP0 is handled with out eps */ 312 for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) { 313 struct dwc2_hsotg_ep *ep; 314 315 ep = hsotg->eps_in[epidx]; 316 if (ep) 317 debugfs_create_file(ep->name, 0444, root, ep, &ep_fops); 318 } 319 } 320 #else 321 static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {} 322 #endif 323 324 /* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */ 325 326 #define dump_register(nm) \ 327 { \ 328 .name = #nm, \ 329 .offset = nm, \ 330 } 331 332 static const struct debugfs_reg32 dwc2_regs[] = { 333 /* 334 * Accessing registers like this can trigger mode mismatch interrupt. 335 * However, according to dwc2 databook, the register access, in this 336 * case, is completed on the processor bus but is ignored by the core 337 * and does not affect its operation. 338 */ 339 dump_register(GOTGCTL), 340 dump_register(GOTGINT), 341 dump_register(GAHBCFG), 342 dump_register(GUSBCFG), 343 dump_register(GRSTCTL), 344 dump_register(GINTSTS), 345 dump_register(GINTMSK), 346 dump_register(GRXSTSR), 347 /* Omit GRXSTSP */ 348 dump_register(GRXFSIZ), 349 dump_register(GNPTXFSIZ), 350 dump_register(GNPTXSTS), 351 dump_register(GI2CCTL), 352 dump_register(GPVNDCTL), 353 dump_register(GGPIO), 354 dump_register(GUID), 355 dump_register(GSNPSID), 356 dump_register(GHWCFG1), 357 dump_register(GHWCFG2), 358 dump_register(GHWCFG3), 359 dump_register(GHWCFG4), 360 dump_register(GLPMCFG), 361 dump_register(GPWRDN), 362 dump_register(GDFIFOCFG), 363 dump_register(ADPCTL), 364 dump_register(HPTXFSIZ), 365 dump_register(DPTXFSIZN(1)), 366 dump_register(DPTXFSIZN(2)), 367 dump_register(DPTXFSIZN(3)), 368 dump_register(DPTXFSIZN(4)), 369 dump_register(DPTXFSIZN(5)), 370 dump_register(DPTXFSIZN(6)), 371 dump_register(DPTXFSIZN(7)), 372 dump_register(DPTXFSIZN(8)), 373 dump_register(DPTXFSIZN(9)), 374 dump_register(DPTXFSIZN(10)), 375 dump_register(DPTXFSIZN(11)), 376 dump_register(DPTXFSIZN(12)), 377 dump_register(DPTXFSIZN(13)), 378 dump_register(DPTXFSIZN(14)), 379 dump_register(DPTXFSIZN(15)), 380 dump_register(DCFG), 381 dump_register(DCTL), 382 dump_register(DSTS), 383 dump_register(DIEPMSK), 384 dump_register(DOEPMSK), 385 dump_register(DAINT), 386 dump_register(DAINTMSK), 387 dump_register(DTKNQR1), 388 dump_register(DTKNQR2), 389 dump_register(DTKNQR3), 390 dump_register(DTKNQR4), 391 dump_register(DVBUSDIS), 392 dump_register(DVBUSPULSE), 393 dump_register(DIEPCTL(0)), 394 dump_register(DIEPCTL(1)), 395 dump_register(DIEPCTL(2)), 396 dump_register(DIEPCTL(3)), 397 dump_register(DIEPCTL(4)), 398 dump_register(DIEPCTL(5)), 399 dump_register(DIEPCTL(6)), 400 dump_register(DIEPCTL(7)), 401 dump_register(DIEPCTL(8)), 402 dump_register(DIEPCTL(9)), 403 dump_register(DIEPCTL(10)), 404 dump_register(DIEPCTL(11)), 405 dump_register(DIEPCTL(12)), 406 dump_register(DIEPCTL(13)), 407 dump_register(DIEPCTL(14)), 408 dump_register(DIEPCTL(15)), 409 dump_register(DOEPCTL(0)), 410 dump_register(DOEPCTL(1)), 411 dump_register(DOEPCTL(2)), 412 dump_register(DOEPCTL(3)), 413 dump_register(DOEPCTL(4)), 414 dump_register(DOEPCTL(5)), 415 dump_register(DOEPCTL(6)), 416 dump_register(DOEPCTL(7)), 417 dump_register(DOEPCTL(8)), 418 dump_register(DOEPCTL(9)), 419 dump_register(DOEPCTL(10)), 420 dump_register(DOEPCTL(11)), 421 dump_register(DOEPCTL(12)), 422 dump_register(DOEPCTL(13)), 423 dump_register(DOEPCTL(14)), 424 dump_register(DOEPCTL(15)), 425 dump_register(DIEPINT(0)), 426 dump_register(DIEPINT(1)), 427 dump_register(DIEPINT(2)), 428 dump_register(DIEPINT(3)), 429 dump_register(DIEPINT(4)), 430 dump_register(DIEPINT(5)), 431 dump_register(DIEPINT(6)), 432 dump_register(DIEPINT(7)), 433 dump_register(DIEPINT(8)), 434 dump_register(DIEPINT(9)), 435 dump_register(DIEPINT(10)), 436 dump_register(DIEPINT(11)), 437 dump_register(DIEPINT(12)), 438 dump_register(DIEPINT(13)), 439 dump_register(DIEPINT(14)), 440 dump_register(DIEPINT(15)), 441 dump_register(DOEPINT(0)), 442 dump_register(DOEPINT(1)), 443 dump_register(DOEPINT(2)), 444 dump_register(DOEPINT(3)), 445 dump_register(DOEPINT(4)), 446 dump_register(DOEPINT(5)), 447 dump_register(DOEPINT(6)), 448 dump_register(DOEPINT(7)), 449 dump_register(DOEPINT(8)), 450 dump_register(DOEPINT(9)), 451 dump_register(DOEPINT(10)), 452 dump_register(DOEPINT(11)), 453 dump_register(DOEPINT(12)), 454 dump_register(DOEPINT(13)), 455 dump_register(DOEPINT(14)), 456 dump_register(DOEPINT(15)), 457 dump_register(DIEPTSIZ(0)), 458 dump_register(DIEPTSIZ(1)), 459 dump_register(DIEPTSIZ(2)), 460 dump_register(DIEPTSIZ(3)), 461 dump_register(DIEPTSIZ(4)), 462 dump_register(DIEPTSIZ(5)), 463 dump_register(DIEPTSIZ(6)), 464 dump_register(DIEPTSIZ(7)), 465 dump_register(DIEPTSIZ(8)), 466 dump_register(DIEPTSIZ(9)), 467 dump_register(DIEPTSIZ(10)), 468 dump_register(DIEPTSIZ(11)), 469 dump_register(DIEPTSIZ(12)), 470 dump_register(DIEPTSIZ(13)), 471 dump_register(DIEPTSIZ(14)), 472 dump_register(DIEPTSIZ(15)), 473 dump_register(DOEPTSIZ(0)), 474 dump_register(DOEPTSIZ(1)), 475 dump_register(DOEPTSIZ(2)), 476 dump_register(DOEPTSIZ(3)), 477 dump_register(DOEPTSIZ(4)), 478 dump_register(DOEPTSIZ(5)), 479 dump_register(DOEPTSIZ(6)), 480 dump_register(DOEPTSIZ(7)), 481 dump_register(DOEPTSIZ(8)), 482 dump_register(DOEPTSIZ(9)), 483 dump_register(DOEPTSIZ(10)), 484 dump_register(DOEPTSIZ(11)), 485 dump_register(DOEPTSIZ(12)), 486 dump_register(DOEPTSIZ(13)), 487 dump_register(DOEPTSIZ(14)), 488 dump_register(DOEPTSIZ(15)), 489 dump_register(DIEPDMA(0)), 490 dump_register(DIEPDMA(1)), 491 dump_register(DIEPDMA(2)), 492 dump_register(DIEPDMA(3)), 493 dump_register(DIEPDMA(4)), 494 dump_register(DIEPDMA(5)), 495 dump_register(DIEPDMA(6)), 496 dump_register(DIEPDMA(7)), 497 dump_register(DIEPDMA(8)), 498 dump_register(DIEPDMA(9)), 499 dump_register(DIEPDMA(10)), 500 dump_register(DIEPDMA(11)), 501 dump_register(DIEPDMA(12)), 502 dump_register(DIEPDMA(13)), 503 dump_register(DIEPDMA(14)), 504 dump_register(DIEPDMA(15)), 505 dump_register(DOEPDMA(0)), 506 dump_register(DOEPDMA(1)), 507 dump_register(DOEPDMA(2)), 508 dump_register(DOEPDMA(3)), 509 dump_register(DOEPDMA(4)), 510 dump_register(DOEPDMA(5)), 511 dump_register(DOEPDMA(6)), 512 dump_register(DOEPDMA(7)), 513 dump_register(DOEPDMA(8)), 514 dump_register(DOEPDMA(9)), 515 dump_register(DOEPDMA(10)), 516 dump_register(DOEPDMA(11)), 517 dump_register(DOEPDMA(12)), 518 dump_register(DOEPDMA(13)), 519 dump_register(DOEPDMA(14)), 520 dump_register(DOEPDMA(15)), 521 dump_register(DTXFSTS(0)), 522 dump_register(DTXFSTS(1)), 523 dump_register(DTXFSTS(2)), 524 dump_register(DTXFSTS(3)), 525 dump_register(DTXFSTS(4)), 526 dump_register(DTXFSTS(5)), 527 dump_register(DTXFSTS(6)), 528 dump_register(DTXFSTS(7)), 529 dump_register(DTXFSTS(8)), 530 dump_register(DTXFSTS(9)), 531 dump_register(DTXFSTS(10)), 532 dump_register(DTXFSTS(11)), 533 dump_register(DTXFSTS(12)), 534 dump_register(DTXFSTS(13)), 535 dump_register(DTXFSTS(14)), 536 dump_register(DTXFSTS(15)), 537 dump_register(PCGCTL), 538 dump_register(HCFG), 539 dump_register(HFIR), 540 dump_register(HFNUM), 541 dump_register(HPTXSTS), 542 dump_register(HAINT), 543 dump_register(HAINTMSK), 544 dump_register(HFLBADDR), 545 dump_register(HPRT0), 546 dump_register(HCCHAR(0)), 547 dump_register(HCCHAR(1)), 548 dump_register(HCCHAR(2)), 549 dump_register(HCCHAR(3)), 550 dump_register(HCCHAR(4)), 551 dump_register(HCCHAR(5)), 552 dump_register(HCCHAR(6)), 553 dump_register(HCCHAR(7)), 554 dump_register(HCCHAR(8)), 555 dump_register(HCCHAR(9)), 556 dump_register(HCCHAR(10)), 557 dump_register(HCCHAR(11)), 558 dump_register(HCCHAR(12)), 559 dump_register(HCCHAR(13)), 560 dump_register(HCCHAR(14)), 561 dump_register(HCCHAR(15)), 562 dump_register(HCSPLT(0)), 563 dump_register(HCSPLT(1)), 564 dump_register(HCSPLT(2)), 565 dump_register(HCSPLT(3)), 566 dump_register(HCSPLT(4)), 567 dump_register(HCSPLT(5)), 568 dump_register(HCSPLT(6)), 569 dump_register(HCSPLT(7)), 570 dump_register(HCSPLT(8)), 571 dump_register(HCSPLT(9)), 572 dump_register(HCSPLT(10)), 573 dump_register(HCSPLT(11)), 574 dump_register(HCSPLT(12)), 575 dump_register(HCSPLT(13)), 576 dump_register(HCSPLT(14)), 577 dump_register(HCSPLT(15)), 578 dump_register(HCINT(0)), 579 dump_register(HCINT(1)), 580 dump_register(HCINT(2)), 581 dump_register(HCINT(3)), 582 dump_register(HCINT(4)), 583 dump_register(HCINT(5)), 584 dump_register(HCINT(6)), 585 dump_register(HCINT(7)), 586 dump_register(HCINT(8)), 587 dump_register(HCINT(9)), 588 dump_register(HCINT(10)), 589 dump_register(HCINT(11)), 590 dump_register(HCINT(12)), 591 dump_register(HCINT(13)), 592 dump_register(HCINT(14)), 593 dump_register(HCINT(15)), 594 dump_register(HCINTMSK(0)), 595 dump_register(HCINTMSK(1)), 596 dump_register(HCINTMSK(2)), 597 dump_register(HCINTMSK(3)), 598 dump_register(HCINTMSK(4)), 599 dump_register(HCINTMSK(5)), 600 dump_register(HCINTMSK(6)), 601 dump_register(HCINTMSK(7)), 602 dump_register(HCINTMSK(8)), 603 dump_register(HCINTMSK(9)), 604 dump_register(HCINTMSK(10)), 605 dump_register(HCINTMSK(11)), 606 dump_register(HCINTMSK(12)), 607 dump_register(HCINTMSK(13)), 608 dump_register(HCINTMSK(14)), 609 dump_register(HCINTMSK(15)), 610 dump_register(HCTSIZ(0)), 611 dump_register(HCTSIZ(1)), 612 dump_register(HCTSIZ(2)), 613 dump_register(HCTSIZ(3)), 614 dump_register(HCTSIZ(4)), 615 dump_register(HCTSIZ(5)), 616 dump_register(HCTSIZ(6)), 617 dump_register(HCTSIZ(7)), 618 dump_register(HCTSIZ(8)), 619 dump_register(HCTSIZ(9)), 620 dump_register(HCTSIZ(10)), 621 dump_register(HCTSIZ(11)), 622 dump_register(HCTSIZ(12)), 623 dump_register(HCTSIZ(13)), 624 dump_register(HCTSIZ(14)), 625 dump_register(HCTSIZ(15)), 626 dump_register(HCDMA(0)), 627 dump_register(HCDMA(1)), 628 dump_register(HCDMA(2)), 629 dump_register(HCDMA(3)), 630 dump_register(HCDMA(4)), 631 dump_register(HCDMA(5)), 632 dump_register(HCDMA(6)), 633 dump_register(HCDMA(7)), 634 dump_register(HCDMA(8)), 635 dump_register(HCDMA(9)), 636 dump_register(HCDMA(10)), 637 dump_register(HCDMA(11)), 638 dump_register(HCDMA(12)), 639 dump_register(HCDMA(13)), 640 dump_register(HCDMA(14)), 641 dump_register(HCDMA(15)), 642 dump_register(HCDMAB(0)), 643 dump_register(HCDMAB(1)), 644 dump_register(HCDMAB(2)), 645 dump_register(HCDMAB(3)), 646 dump_register(HCDMAB(4)), 647 dump_register(HCDMAB(5)), 648 dump_register(HCDMAB(6)), 649 dump_register(HCDMAB(7)), 650 dump_register(HCDMAB(8)), 651 dump_register(HCDMAB(9)), 652 dump_register(HCDMAB(10)), 653 dump_register(HCDMAB(11)), 654 dump_register(HCDMAB(12)), 655 dump_register(HCDMAB(13)), 656 dump_register(HCDMAB(14)), 657 dump_register(HCDMAB(15)), 658 }; 659 660 #define print_param(_seq, _ptr, _param) \ 661 seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param) 662 663 #define print_param_hex(_seq, _ptr, _param) \ 664 seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param) 665 666 static int params_show(struct seq_file *seq, void *v) 667 { 668 struct dwc2_hsotg *hsotg = seq->private; 669 struct dwc2_core_params *p = &hsotg->params; 670 int i; 671 672 print_param(seq, p, otg_cap); 673 print_param(seq, p, dma_desc_enable); 674 print_param(seq, p, dma_desc_fs_enable); 675 print_param(seq, p, speed); 676 print_param(seq, p, enable_dynamic_fifo); 677 print_param(seq, p, en_multiple_tx_fifo); 678 print_param(seq, p, host_rx_fifo_size); 679 print_param(seq, p, host_nperio_tx_fifo_size); 680 print_param(seq, p, host_perio_tx_fifo_size); 681 print_param(seq, p, max_transfer_size); 682 print_param(seq, p, max_packet_count); 683 print_param(seq, p, host_channels); 684 print_param(seq, p, phy_type); 685 print_param(seq, p, phy_utmi_width); 686 print_param(seq, p, phy_ulpi_ddr); 687 print_param(seq, p, phy_ulpi_ext_vbus); 688 print_param(seq, p, i2c_enable); 689 print_param(seq, p, ipg_isoc_en); 690 print_param(seq, p, ulpi_fs_ls); 691 print_param(seq, p, host_support_fs_ls_low_power); 692 print_param(seq, p, host_ls_low_power_phy_clk); 693 print_param(seq, p, ts_dline); 694 print_param(seq, p, reload_ctl); 695 print_param_hex(seq, p, ahbcfg); 696 print_param(seq, p, uframe_sched); 697 print_param(seq, p, external_id_pin_ctl); 698 print_param(seq, p, power_down); 699 print_param(seq, p, lpm); 700 print_param(seq, p, lpm_clock_gating); 701 print_param(seq, p, besl); 702 print_param(seq, p, hird_threshold_en); 703 print_param(seq, p, hird_threshold); 704 print_param(seq, p, service_interval); 705 print_param(seq, p, host_dma); 706 print_param(seq, p, g_dma); 707 print_param(seq, p, g_dma_desc); 708 print_param(seq, p, g_rx_fifo_size); 709 print_param(seq, p, g_np_tx_fifo_size); 710 711 for (i = 0; i < MAX_EPS_CHANNELS; i++) { 712 char str[32]; 713 714 snprintf(str, 32, "g_tx_fifo_size[%d]", i); 715 seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]); 716 } 717 718 return 0; 719 } 720 DEFINE_SHOW_ATTRIBUTE(params); 721 722 static int hw_params_show(struct seq_file *seq, void *v) 723 { 724 struct dwc2_hsotg *hsotg = seq->private; 725 struct dwc2_hw_params *hw = &hsotg->hw_params; 726 727 print_param(seq, hw, op_mode); 728 print_param(seq, hw, arch); 729 print_param(seq, hw, dma_desc_enable); 730 print_param(seq, hw, enable_dynamic_fifo); 731 print_param(seq, hw, en_multiple_tx_fifo); 732 print_param(seq, hw, rx_fifo_size); 733 print_param(seq, hw, host_nperio_tx_fifo_size); 734 print_param(seq, hw, dev_nperio_tx_fifo_size); 735 print_param(seq, hw, host_perio_tx_fifo_size); 736 print_param(seq, hw, nperio_tx_q_depth); 737 print_param(seq, hw, host_perio_tx_q_depth); 738 print_param(seq, hw, dev_token_q_depth); 739 print_param(seq, hw, max_transfer_size); 740 print_param(seq, hw, max_packet_count); 741 print_param(seq, hw, host_channels); 742 print_param(seq, hw, hs_phy_type); 743 print_param(seq, hw, fs_phy_type); 744 print_param(seq, hw, i2c_enable); 745 print_param(seq, hw, num_dev_ep); 746 print_param(seq, hw, num_dev_perio_in_ep); 747 print_param(seq, hw, total_fifo_size); 748 print_param(seq, hw, power_optimized); 749 print_param(seq, hw, utmi_phy_data_width); 750 print_param_hex(seq, hw, snpsid); 751 print_param_hex(seq, hw, dev_ep_dirs); 752 753 return 0; 754 } 755 DEFINE_SHOW_ATTRIBUTE(hw_params); 756 757 static int dr_mode_show(struct seq_file *seq, void *v) 758 { 759 struct dwc2_hsotg *hsotg = seq->private; 760 const char *dr_mode = ""; 761 762 device_property_read_string(hsotg->dev, "dr_mode", &dr_mode); 763 seq_printf(seq, "%s\n", dr_mode); 764 return 0; 765 } 766 DEFINE_SHOW_ATTRIBUTE(dr_mode); 767 768 int dwc2_debugfs_init(struct dwc2_hsotg *hsotg) 769 { 770 int ret; 771 struct dentry *root; 772 773 root = debugfs_create_dir(dev_name(hsotg->dev), NULL); 774 hsotg->debug_root = root; 775 776 debugfs_create_file("params", 0444, root, hsotg, ¶ms_fops); 777 debugfs_create_file("hw_params", 0444, root, hsotg, &hw_params_fops); 778 debugfs_create_file("dr_mode", 0444, root, hsotg, &dr_mode_fops); 779 780 /* Add gadget debugfs nodes */ 781 dwc2_hsotg_create_debug(hsotg); 782 783 hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset), 784 GFP_KERNEL); 785 if (!hsotg->regset) { 786 ret = -ENOMEM; 787 goto err; 788 } 789 790 hsotg->regset->regs = dwc2_regs; 791 hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs); 792 hsotg->regset->base = hsotg->regs; 793 794 debugfs_create_regset32("regdump", 0444, root, hsotg->regset); 795 796 return 0; 797 err: 798 debugfs_remove_recursive(hsotg->debug_root); 799 return ret; 800 } 801 802 void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg) 803 { 804 debugfs_remove_recursive(hsotg->debug_root); 805 hsotg->debug_root = NULL; 806 } 807