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 * testmode_write - debugfs: change usb test mode 21 * @seq: The seq file to write to. 22 * @v: Unused parameter. 23 * 24 * This debugfs entry modify the current usb test mode. 25 */ 26 static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t 27 count, loff_t *ppos) 28 { 29 struct seq_file *s = file->private_data; 30 struct dwc2_hsotg *hsotg = s->private; 31 unsigned long flags; 32 u32 testmode = 0; 33 char buf[32]; 34 35 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) 36 return -EFAULT; 37 38 if (!strncmp(buf, "test_j", 6)) 39 testmode = TEST_J; 40 else if (!strncmp(buf, "test_k", 6)) 41 testmode = TEST_K; 42 else if (!strncmp(buf, "test_se0_nak", 12)) 43 testmode = TEST_SE0_NAK; 44 else if (!strncmp(buf, "test_packet", 11)) 45 testmode = TEST_PACKET; 46 else if (!strncmp(buf, "test_force_enable", 17)) 47 testmode = TEST_FORCE_EN; 48 else 49 testmode = 0; 50 51 spin_lock_irqsave(&hsotg->lock, flags); 52 dwc2_hsotg_set_test_mode(hsotg, testmode); 53 spin_unlock_irqrestore(&hsotg->lock, flags); 54 return count; 55 } 56 57 /** 58 * testmode_show - debugfs: show usb test mode state 59 * @seq: The seq file to write to. 60 * @v: Unused parameter. 61 * 62 * This debugfs entry shows which usb test mode is currently enabled. 63 */ 64 static int testmode_show(struct seq_file *s, void *unused) 65 { 66 struct dwc2_hsotg *hsotg = s->private; 67 unsigned long flags; 68 int dctl; 69 70 spin_lock_irqsave(&hsotg->lock, flags); 71 dctl = dwc2_readl(hsotg->regs + DCTL); 72 dctl &= DCTL_TSTCTL_MASK; 73 dctl >>= DCTL_TSTCTL_SHIFT; 74 spin_unlock_irqrestore(&hsotg->lock, flags); 75 76 switch (dctl) { 77 case 0: 78 seq_puts(s, "no test\n"); 79 break; 80 case TEST_J: 81 seq_puts(s, "test_j\n"); 82 break; 83 case TEST_K: 84 seq_puts(s, "test_k\n"); 85 break; 86 case TEST_SE0_NAK: 87 seq_puts(s, "test_se0_nak\n"); 88 break; 89 case TEST_PACKET: 90 seq_puts(s, "test_packet\n"); 91 break; 92 case TEST_FORCE_EN: 93 seq_puts(s, "test_force_enable\n"); 94 break; 95 default: 96 seq_printf(s, "UNKNOWN %d\n", dctl); 97 } 98 99 return 0; 100 } 101 102 static int testmode_open(struct inode *inode, struct file *file) 103 { 104 return single_open(file, testmode_show, inode->i_private); 105 } 106 107 static const struct file_operations testmode_fops = { 108 .owner = THIS_MODULE, 109 .open = testmode_open, 110 .write = testmode_write, 111 .read = seq_read, 112 .llseek = seq_lseek, 113 .release = single_release, 114 }; 115 116 /** 117 * state_show - debugfs: show overall driver and device state. 118 * @seq: The seq file to write to. 119 * @v: Unused parameter. 120 * 121 * This debugfs entry shows the overall state of the hardware and 122 * some general information about each of the endpoints available 123 * to the system. 124 */ 125 static int state_show(struct seq_file *seq, void *v) 126 { 127 struct dwc2_hsotg *hsotg = seq->private; 128 void __iomem *regs = hsotg->regs; 129 int idx; 130 131 seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", 132 dwc2_readl(regs + DCFG), 133 dwc2_readl(regs + DCTL), 134 dwc2_readl(regs + DSTS)); 135 136 seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", 137 dwc2_readl(regs + DIEPMSK), dwc2_readl(regs + DOEPMSK)); 138 139 seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", 140 dwc2_readl(regs + GINTMSK), 141 dwc2_readl(regs + GINTSTS)); 142 143 seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", 144 dwc2_readl(regs + DAINTMSK), 145 dwc2_readl(regs + DAINT)); 146 147 seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", 148 dwc2_readl(regs + GNPTXSTS), 149 dwc2_readl(regs + 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(regs + DIEPCTL(idx)); 157 out = dwc2_readl(regs + DOEPCTL(idx)); 158 159 seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", 160 idx, in, out); 161 162 in = dwc2_readl(regs + DIEPTSIZ(idx)); 163 out = dwc2_readl(regs + 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 } 173 174 static int state_open(struct inode *inode, struct file *file) 175 { 176 return single_open(file, state_show, inode->i_private); 177 } 178 179 static const struct file_operations state_fops = { 180 .owner = THIS_MODULE, 181 .open = state_open, 182 .read = seq_read, 183 .llseek = seq_lseek, 184 .release = single_release, 185 }; 186 187 /** 188 * fifo_show - debugfs: show the fifo information 189 * @seq: The seq_file to write data to. 190 * @v: Unused parameter. 191 * 192 * Show the FIFO information for the overall fifo and all the 193 * periodic transmission FIFOs. 194 */ 195 static int fifo_show(struct seq_file *seq, void *v) 196 { 197 struct dwc2_hsotg *hsotg = seq->private; 198 void __iomem *regs = hsotg->regs; 199 u32 val; 200 int idx; 201 202 seq_puts(seq, "Non-periodic FIFOs:\n"); 203 seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(regs + GRXFSIZ)); 204 205 val = dwc2_readl(regs + GNPTXFSIZ); 206 seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", 207 val >> FIFOSIZE_DEPTH_SHIFT, 208 val & FIFOSIZE_STARTADDR_MASK); 209 210 seq_puts(seq, "\nPeriodic TXFIFOs:\n"); 211 212 for (idx = 1; idx < hsotg->num_of_eps; idx++) { 213 val = dwc2_readl(regs + DPTXFSIZN(idx)); 214 215 seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, 216 val >> FIFOSIZE_DEPTH_SHIFT, 217 val & FIFOSIZE_STARTADDR_MASK); 218 } 219 220 return 0; 221 } 222 223 static int fifo_open(struct inode *inode, struct file *file) 224 { 225 return single_open(file, fifo_show, inode->i_private); 226 } 227 228 static const struct file_operations fifo_fops = { 229 .owner = THIS_MODULE, 230 .open = fifo_open, 231 .read = seq_read, 232 .llseek = seq_lseek, 233 .release = single_release, 234 }; 235 236 static const char *decode_direction(int is_in) 237 { 238 return is_in ? "in" : "out"; 239 } 240 241 /** 242 * ep_show - debugfs: show the state of an endpoint. 243 * @seq: The seq_file to write data to. 244 * @v: Unused parameter. 245 * 246 * This debugfs entry shows the state of the given endpoint (one is 247 * registered for each available). 248 */ 249 static int ep_show(struct seq_file *seq, void *v) 250 { 251 struct dwc2_hsotg_ep *ep = seq->private; 252 struct dwc2_hsotg *hsotg = ep->parent; 253 struct dwc2_hsotg_req *req; 254 void __iomem *regs = hsotg->regs; 255 int index = ep->index; 256 int show_limit = 15; 257 unsigned long flags; 258 259 seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", 260 ep->index, ep->ep.name, decode_direction(ep->dir_in)); 261 262 /* first show the register state */ 263 264 seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", 265 dwc2_readl(regs + DIEPCTL(index)), 266 dwc2_readl(regs + DOEPCTL(index))); 267 268 seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", 269 dwc2_readl(regs + DIEPDMA(index)), 270 dwc2_readl(regs + DOEPDMA(index))); 271 272 seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", 273 dwc2_readl(regs + DIEPINT(index)), 274 dwc2_readl(regs + DOEPINT(index))); 275 276 seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", 277 dwc2_readl(regs + DIEPTSIZ(index)), 278 dwc2_readl(regs + DOEPTSIZ(index))); 279 280 seq_puts(seq, "\n"); 281 seq_printf(seq, "mps %d\n", ep->ep.maxpacket); 282 seq_printf(seq, "total_data=%ld\n", ep->total_data); 283 284 seq_printf(seq, "request list (%p,%p):\n", 285 ep->queue.next, ep->queue.prev); 286 287 spin_lock_irqsave(&hsotg->lock, flags); 288 289 list_for_each_entry(req, &ep->queue, queue) { 290 if (--show_limit < 0) { 291 seq_puts(seq, "not showing more requests...\n"); 292 break; 293 } 294 295 seq_printf(seq, "%c req %p: %d bytes @%p, ", 296 req == ep->req ? '*' : ' ', 297 req, req->req.length, req->req.buf); 298 seq_printf(seq, "%d done, res %d\n", 299 req->req.actual, req->req.status); 300 } 301 302 spin_unlock_irqrestore(&hsotg->lock, flags); 303 304 return 0; 305 } 306 307 static int ep_open(struct inode *inode, struct file *file) 308 { 309 return single_open(file, ep_show, inode->i_private); 310 } 311 312 static const struct file_operations ep_fops = { 313 .owner = THIS_MODULE, 314 .open = ep_open, 315 .read = seq_read, 316 .llseek = seq_lseek, 317 .release = single_release, 318 }; 319 320 /** 321 * dwc2_hsotg_create_debug - create debugfs directory and files 322 * @hsotg: The driver state 323 * 324 * Create the debugfs files to allow the user to get information 325 * about the state of the system. The directory name is created 326 * with the same name as the device itself, in case we end up 327 * with multiple blocks in future systems. 328 */ 329 static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) 330 { 331 struct dentry *root; 332 struct dentry *file; 333 unsigned int epidx; 334 335 root = hsotg->debug_root; 336 337 /* create general state file */ 338 339 file = debugfs_create_file("state", 0444, root, hsotg, &state_fops); 340 if (IS_ERR(file)) 341 dev_err(hsotg->dev, "%s: failed to create state\n", __func__); 342 343 file = debugfs_create_file("testmode", 0644, root, hsotg, 344 &testmode_fops); 345 if (IS_ERR(file)) 346 dev_err(hsotg->dev, "%s: failed to create testmode\n", 347 __func__); 348 349 file = debugfs_create_file("fifo", 0444, root, hsotg, &fifo_fops); 350 if (IS_ERR(file)) 351 dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); 352 353 /* Create one file for each out endpoint */ 354 for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 355 struct dwc2_hsotg_ep *ep; 356 357 ep = hsotg->eps_out[epidx]; 358 if (ep) { 359 file = debugfs_create_file(ep->name, 0444, 360 root, ep, &ep_fops); 361 if (IS_ERR(file)) 362 dev_err(hsotg->dev, "failed to create %s debug file\n", 363 ep->name); 364 } 365 } 366 /* Create one file for each in endpoint. EP0 is handled with out eps */ 367 for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) { 368 struct dwc2_hsotg_ep *ep; 369 370 ep = hsotg->eps_in[epidx]; 371 if (ep) { 372 file = debugfs_create_file(ep->name, 0444, 373 root, ep, &ep_fops); 374 if (IS_ERR(file)) 375 dev_err(hsotg->dev, "failed to create %s debug file\n", 376 ep->name); 377 } 378 } 379 } 380 #else 381 static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {} 382 #endif 383 384 /* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */ 385 386 #define dump_register(nm) \ 387 { \ 388 .name = #nm, \ 389 .offset = nm, \ 390 } 391 392 static const struct debugfs_reg32 dwc2_regs[] = { 393 /* 394 * Accessing registers like this can trigger mode mismatch interrupt. 395 * However, according to dwc2 databook, the register access, in this 396 * case, is completed on the processor bus but is ignored by the core 397 * and does not affect its operation. 398 */ 399 dump_register(GOTGCTL), 400 dump_register(GOTGINT), 401 dump_register(GAHBCFG), 402 dump_register(GUSBCFG), 403 dump_register(GRSTCTL), 404 dump_register(GINTSTS), 405 dump_register(GINTMSK), 406 dump_register(GRXSTSR), 407 dump_register(GRXSTSP), 408 dump_register(GRXFSIZ), 409 dump_register(GNPTXFSIZ), 410 dump_register(GNPTXSTS), 411 dump_register(GI2CCTL), 412 dump_register(GPVNDCTL), 413 dump_register(GGPIO), 414 dump_register(GUID), 415 dump_register(GSNPSID), 416 dump_register(GHWCFG1), 417 dump_register(GHWCFG2), 418 dump_register(GHWCFG3), 419 dump_register(GHWCFG4), 420 dump_register(GLPMCFG), 421 dump_register(GPWRDN), 422 dump_register(GDFIFOCFG), 423 dump_register(ADPCTL), 424 dump_register(HPTXFSIZ), 425 dump_register(DPTXFSIZN(1)), 426 dump_register(DPTXFSIZN(2)), 427 dump_register(DPTXFSIZN(3)), 428 dump_register(DPTXFSIZN(4)), 429 dump_register(DPTXFSIZN(5)), 430 dump_register(DPTXFSIZN(6)), 431 dump_register(DPTXFSIZN(7)), 432 dump_register(DPTXFSIZN(8)), 433 dump_register(DPTXFSIZN(9)), 434 dump_register(DPTXFSIZN(10)), 435 dump_register(DPTXFSIZN(11)), 436 dump_register(DPTXFSIZN(12)), 437 dump_register(DPTXFSIZN(13)), 438 dump_register(DPTXFSIZN(14)), 439 dump_register(DPTXFSIZN(15)), 440 dump_register(DCFG), 441 dump_register(DCTL), 442 dump_register(DSTS), 443 dump_register(DIEPMSK), 444 dump_register(DOEPMSK), 445 dump_register(DAINT), 446 dump_register(DAINTMSK), 447 dump_register(DTKNQR1), 448 dump_register(DTKNQR2), 449 dump_register(DTKNQR3), 450 dump_register(DTKNQR4), 451 dump_register(DVBUSDIS), 452 dump_register(DVBUSPULSE), 453 dump_register(DIEPCTL(0)), 454 dump_register(DIEPCTL(1)), 455 dump_register(DIEPCTL(2)), 456 dump_register(DIEPCTL(3)), 457 dump_register(DIEPCTL(4)), 458 dump_register(DIEPCTL(5)), 459 dump_register(DIEPCTL(6)), 460 dump_register(DIEPCTL(7)), 461 dump_register(DIEPCTL(8)), 462 dump_register(DIEPCTL(9)), 463 dump_register(DIEPCTL(10)), 464 dump_register(DIEPCTL(11)), 465 dump_register(DIEPCTL(12)), 466 dump_register(DIEPCTL(13)), 467 dump_register(DIEPCTL(14)), 468 dump_register(DIEPCTL(15)), 469 dump_register(DOEPCTL(0)), 470 dump_register(DOEPCTL(1)), 471 dump_register(DOEPCTL(2)), 472 dump_register(DOEPCTL(3)), 473 dump_register(DOEPCTL(4)), 474 dump_register(DOEPCTL(5)), 475 dump_register(DOEPCTL(6)), 476 dump_register(DOEPCTL(7)), 477 dump_register(DOEPCTL(8)), 478 dump_register(DOEPCTL(9)), 479 dump_register(DOEPCTL(10)), 480 dump_register(DOEPCTL(11)), 481 dump_register(DOEPCTL(12)), 482 dump_register(DOEPCTL(13)), 483 dump_register(DOEPCTL(14)), 484 dump_register(DOEPCTL(15)), 485 dump_register(DIEPINT(0)), 486 dump_register(DIEPINT(1)), 487 dump_register(DIEPINT(2)), 488 dump_register(DIEPINT(3)), 489 dump_register(DIEPINT(4)), 490 dump_register(DIEPINT(5)), 491 dump_register(DIEPINT(6)), 492 dump_register(DIEPINT(7)), 493 dump_register(DIEPINT(8)), 494 dump_register(DIEPINT(9)), 495 dump_register(DIEPINT(10)), 496 dump_register(DIEPINT(11)), 497 dump_register(DIEPINT(12)), 498 dump_register(DIEPINT(13)), 499 dump_register(DIEPINT(14)), 500 dump_register(DIEPINT(15)), 501 dump_register(DOEPINT(0)), 502 dump_register(DOEPINT(1)), 503 dump_register(DOEPINT(2)), 504 dump_register(DOEPINT(3)), 505 dump_register(DOEPINT(4)), 506 dump_register(DOEPINT(5)), 507 dump_register(DOEPINT(6)), 508 dump_register(DOEPINT(7)), 509 dump_register(DOEPINT(8)), 510 dump_register(DOEPINT(9)), 511 dump_register(DOEPINT(10)), 512 dump_register(DOEPINT(11)), 513 dump_register(DOEPINT(12)), 514 dump_register(DOEPINT(13)), 515 dump_register(DOEPINT(14)), 516 dump_register(DOEPINT(15)), 517 dump_register(DIEPTSIZ(0)), 518 dump_register(DIEPTSIZ(1)), 519 dump_register(DIEPTSIZ(2)), 520 dump_register(DIEPTSIZ(3)), 521 dump_register(DIEPTSIZ(4)), 522 dump_register(DIEPTSIZ(5)), 523 dump_register(DIEPTSIZ(6)), 524 dump_register(DIEPTSIZ(7)), 525 dump_register(DIEPTSIZ(8)), 526 dump_register(DIEPTSIZ(9)), 527 dump_register(DIEPTSIZ(10)), 528 dump_register(DIEPTSIZ(11)), 529 dump_register(DIEPTSIZ(12)), 530 dump_register(DIEPTSIZ(13)), 531 dump_register(DIEPTSIZ(14)), 532 dump_register(DIEPTSIZ(15)), 533 dump_register(DOEPTSIZ(0)), 534 dump_register(DOEPTSIZ(1)), 535 dump_register(DOEPTSIZ(2)), 536 dump_register(DOEPTSIZ(3)), 537 dump_register(DOEPTSIZ(4)), 538 dump_register(DOEPTSIZ(5)), 539 dump_register(DOEPTSIZ(6)), 540 dump_register(DOEPTSIZ(7)), 541 dump_register(DOEPTSIZ(8)), 542 dump_register(DOEPTSIZ(9)), 543 dump_register(DOEPTSIZ(10)), 544 dump_register(DOEPTSIZ(11)), 545 dump_register(DOEPTSIZ(12)), 546 dump_register(DOEPTSIZ(13)), 547 dump_register(DOEPTSIZ(14)), 548 dump_register(DOEPTSIZ(15)), 549 dump_register(DIEPDMA(0)), 550 dump_register(DIEPDMA(1)), 551 dump_register(DIEPDMA(2)), 552 dump_register(DIEPDMA(3)), 553 dump_register(DIEPDMA(4)), 554 dump_register(DIEPDMA(5)), 555 dump_register(DIEPDMA(6)), 556 dump_register(DIEPDMA(7)), 557 dump_register(DIEPDMA(8)), 558 dump_register(DIEPDMA(9)), 559 dump_register(DIEPDMA(10)), 560 dump_register(DIEPDMA(11)), 561 dump_register(DIEPDMA(12)), 562 dump_register(DIEPDMA(13)), 563 dump_register(DIEPDMA(14)), 564 dump_register(DIEPDMA(15)), 565 dump_register(DOEPDMA(0)), 566 dump_register(DOEPDMA(1)), 567 dump_register(DOEPDMA(2)), 568 dump_register(DOEPDMA(3)), 569 dump_register(DOEPDMA(4)), 570 dump_register(DOEPDMA(5)), 571 dump_register(DOEPDMA(6)), 572 dump_register(DOEPDMA(7)), 573 dump_register(DOEPDMA(8)), 574 dump_register(DOEPDMA(9)), 575 dump_register(DOEPDMA(10)), 576 dump_register(DOEPDMA(11)), 577 dump_register(DOEPDMA(12)), 578 dump_register(DOEPDMA(13)), 579 dump_register(DOEPDMA(14)), 580 dump_register(DOEPDMA(15)), 581 dump_register(DTXFSTS(0)), 582 dump_register(DTXFSTS(1)), 583 dump_register(DTXFSTS(2)), 584 dump_register(DTXFSTS(3)), 585 dump_register(DTXFSTS(4)), 586 dump_register(DTXFSTS(5)), 587 dump_register(DTXFSTS(6)), 588 dump_register(DTXFSTS(7)), 589 dump_register(DTXFSTS(8)), 590 dump_register(DTXFSTS(9)), 591 dump_register(DTXFSTS(10)), 592 dump_register(DTXFSTS(11)), 593 dump_register(DTXFSTS(12)), 594 dump_register(DTXFSTS(13)), 595 dump_register(DTXFSTS(14)), 596 dump_register(DTXFSTS(15)), 597 dump_register(PCGCTL), 598 dump_register(HCFG), 599 dump_register(HFIR), 600 dump_register(HFNUM), 601 dump_register(HPTXSTS), 602 dump_register(HAINT), 603 dump_register(HAINTMSK), 604 dump_register(HFLBADDR), 605 dump_register(HPRT0), 606 dump_register(HCCHAR(0)), 607 dump_register(HCCHAR(1)), 608 dump_register(HCCHAR(2)), 609 dump_register(HCCHAR(3)), 610 dump_register(HCCHAR(4)), 611 dump_register(HCCHAR(5)), 612 dump_register(HCCHAR(6)), 613 dump_register(HCCHAR(7)), 614 dump_register(HCCHAR(8)), 615 dump_register(HCCHAR(9)), 616 dump_register(HCCHAR(10)), 617 dump_register(HCCHAR(11)), 618 dump_register(HCCHAR(12)), 619 dump_register(HCCHAR(13)), 620 dump_register(HCCHAR(14)), 621 dump_register(HCCHAR(15)), 622 dump_register(HCSPLT(0)), 623 dump_register(HCSPLT(1)), 624 dump_register(HCSPLT(2)), 625 dump_register(HCSPLT(3)), 626 dump_register(HCSPLT(4)), 627 dump_register(HCSPLT(5)), 628 dump_register(HCSPLT(6)), 629 dump_register(HCSPLT(7)), 630 dump_register(HCSPLT(8)), 631 dump_register(HCSPLT(9)), 632 dump_register(HCSPLT(10)), 633 dump_register(HCSPLT(11)), 634 dump_register(HCSPLT(12)), 635 dump_register(HCSPLT(13)), 636 dump_register(HCSPLT(14)), 637 dump_register(HCSPLT(15)), 638 dump_register(HCINT(0)), 639 dump_register(HCINT(1)), 640 dump_register(HCINT(2)), 641 dump_register(HCINT(3)), 642 dump_register(HCINT(4)), 643 dump_register(HCINT(5)), 644 dump_register(HCINT(6)), 645 dump_register(HCINT(7)), 646 dump_register(HCINT(8)), 647 dump_register(HCINT(9)), 648 dump_register(HCINT(10)), 649 dump_register(HCINT(11)), 650 dump_register(HCINT(12)), 651 dump_register(HCINT(13)), 652 dump_register(HCINT(14)), 653 dump_register(HCINT(15)), 654 dump_register(HCINTMSK(0)), 655 dump_register(HCINTMSK(1)), 656 dump_register(HCINTMSK(2)), 657 dump_register(HCINTMSK(3)), 658 dump_register(HCINTMSK(4)), 659 dump_register(HCINTMSK(5)), 660 dump_register(HCINTMSK(6)), 661 dump_register(HCINTMSK(7)), 662 dump_register(HCINTMSK(8)), 663 dump_register(HCINTMSK(9)), 664 dump_register(HCINTMSK(10)), 665 dump_register(HCINTMSK(11)), 666 dump_register(HCINTMSK(12)), 667 dump_register(HCINTMSK(13)), 668 dump_register(HCINTMSK(14)), 669 dump_register(HCINTMSK(15)), 670 dump_register(HCTSIZ(0)), 671 dump_register(HCTSIZ(1)), 672 dump_register(HCTSIZ(2)), 673 dump_register(HCTSIZ(3)), 674 dump_register(HCTSIZ(4)), 675 dump_register(HCTSIZ(5)), 676 dump_register(HCTSIZ(6)), 677 dump_register(HCTSIZ(7)), 678 dump_register(HCTSIZ(8)), 679 dump_register(HCTSIZ(9)), 680 dump_register(HCTSIZ(10)), 681 dump_register(HCTSIZ(11)), 682 dump_register(HCTSIZ(12)), 683 dump_register(HCTSIZ(13)), 684 dump_register(HCTSIZ(14)), 685 dump_register(HCTSIZ(15)), 686 dump_register(HCDMA(0)), 687 dump_register(HCDMA(1)), 688 dump_register(HCDMA(2)), 689 dump_register(HCDMA(3)), 690 dump_register(HCDMA(4)), 691 dump_register(HCDMA(5)), 692 dump_register(HCDMA(6)), 693 dump_register(HCDMA(7)), 694 dump_register(HCDMA(8)), 695 dump_register(HCDMA(9)), 696 dump_register(HCDMA(10)), 697 dump_register(HCDMA(11)), 698 dump_register(HCDMA(12)), 699 dump_register(HCDMA(13)), 700 dump_register(HCDMA(14)), 701 dump_register(HCDMA(15)), 702 dump_register(HCDMAB(0)), 703 dump_register(HCDMAB(1)), 704 dump_register(HCDMAB(2)), 705 dump_register(HCDMAB(3)), 706 dump_register(HCDMAB(4)), 707 dump_register(HCDMAB(5)), 708 dump_register(HCDMAB(6)), 709 dump_register(HCDMAB(7)), 710 dump_register(HCDMAB(8)), 711 dump_register(HCDMAB(9)), 712 dump_register(HCDMAB(10)), 713 dump_register(HCDMAB(11)), 714 dump_register(HCDMAB(12)), 715 dump_register(HCDMAB(13)), 716 dump_register(HCDMAB(14)), 717 dump_register(HCDMAB(15)), 718 }; 719 720 #define print_param(_seq, _ptr, _param) \ 721 seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param) 722 723 #define print_param_hex(_seq, _ptr, _param) \ 724 seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param) 725 726 static int params_show(struct seq_file *seq, void *v) 727 { 728 struct dwc2_hsotg *hsotg = seq->private; 729 struct dwc2_core_params *p = &hsotg->params; 730 int i; 731 732 print_param(seq, p, otg_cap); 733 print_param(seq, p, dma_desc_enable); 734 print_param(seq, p, dma_desc_fs_enable); 735 print_param(seq, p, speed); 736 print_param(seq, p, enable_dynamic_fifo); 737 print_param(seq, p, en_multiple_tx_fifo); 738 print_param(seq, p, host_rx_fifo_size); 739 print_param(seq, p, host_nperio_tx_fifo_size); 740 print_param(seq, p, host_perio_tx_fifo_size); 741 print_param(seq, p, max_transfer_size); 742 print_param(seq, p, max_packet_count); 743 print_param(seq, p, host_channels); 744 print_param(seq, p, phy_type); 745 print_param(seq, p, phy_utmi_width); 746 print_param(seq, p, phy_ulpi_ddr); 747 print_param(seq, p, phy_ulpi_ext_vbus); 748 print_param(seq, p, i2c_enable); 749 print_param(seq, p, ulpi_fs_ls); 750 print_param(seq, p, host_support_fs_ls_low_power); 751 print_param(seq, p, host_ls_low_power_phy_clk); 752 print_param(seq, p, ts_dline); 753 print_param(seq, p, reload_ctl); 754 print_param_hex(seq, p, ahbcfg); 755 print_param(seq, p, uframe_sched); 756 print_param(seq, p, external_id_pin_ctl); 757 print_param(seq, p, hibernation); 758 print_param(seq, p, host_dma); 759 print_param(seq, p, g_dma); 760 print_param(seq, p, g_dma_desc); 761 print_param(seq, p, g_rx_fifo_size); 762 print_param(seq, p, g_np_tx_fifo_size); 763 764 for (i = 0; i < MAX_EPS_CHANNELS; i++) { 765 char str[32]; 766 767 snprintf(str, 32, "g_tx_fifo_size[%d]", i); 768 seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]); 769 } 770 771 return 0; 772 } 773 774 static int params_open(struct inode *inode, struct file *file) 775 { 776 return single_open(file, params_show, inode->i_private); 777 } 778 779 static const struct file_operations params_fops = { 780 .owner = THIS_MODULE, 781 .open = params_open, 782 .read = seq_read, 783 .llseek = seq_lseek, 784 .release = single_release, 785 }; 786 787 static int hw_params_show(struct seq_file *seq, void *v) 788 { 789 struct dwc2_hsotg *hsotg = seq->private; 790 struct dwc2_hw_params *hw = &hsotg->hw_params; 791 792 print_param(seq, hw, op_mode); 793 print_param(seq, hw, arch); 794 print_param(seq, hw, dma_desc_enable); 795 print_param(seq, hw, enable_dynamic_fifo); 796 print_param(seq, hw, en_multiple_tx_fifo); 797 print_param(seq, hw, rx_fifo_size); 798 print_param(seq, hw, host_nperio_tx_fifo_size); 799 print_param(seq, hw, dev_nperio_tx_fifo_size); 800 print_param(seq, hw, host_perio_tx_fifo_size); 801 print_param(seq, hw, nperio_tx_q_depth); 802 print_param(seq, hw, host_perio_tx_q_depth); 803 print_param(seq, hw, dev_token_q_depth); 804 print_param(seq, hw, max_transfer_size); 805 print_param(seq, hw, max_packet_count); 806 print_param(seq, hw, host_channels); 807 print_param(seq, hw, hs_phy_type); 808 print_param(seq, hw, fs_phy_type); 809 print_param(seq, hw, i2c_enable); 810 print_param(seq, hw, num_dev_ep); 811 print_param(seq, hw, num_dev_perio_in_ep); 812 print_param(seq, hw, total_fifo_size); 813 print_param(seq, hw, power_optimized); 814 print_param(seq, hw, utmi_phy_data_width); 815 print_param_hex(seq, hw, snpsid); 816 print_param_hex(seq, hw, dev_ep_dirs); 817 818 return 0; 819 } 820 821 static int hw_params_open(struct inode *inode, struct file *file) 822 { 823 return single_open(file, hw_params_show, inode->i_private); 824 } 825 826 static const struct file_operations hw_params_fops = { 827 .owner = THIS_MODULE, 828 .open = hw_params_open, 829 .read = seq_read, 830 .llseek = seq_lseek, 831 .release = single_release, 832 }; 833 834 static int dr_mode_show(struct seq_file *seq, void *v) 835 { 836 struct dwc2_hsotg *hsotg = seq->private; 837 const char *dr_mode = ""; 838 839 device_property_read_string(hsotg->dev, "dr_mode", &dr_mode); 840 seq_printf(seq, "%s\n", dr_mode); 841 return 0; 842 } 843 844 static int dr_mode_open(struct inode *inode, struct file *file) 845 { 846 return single_open(file, dr_mode_show, inode->i_private); 847 } 848 849 static const struct file_operations dr_mode_fops = { 850 .owner = THIS_MODULE, 851 .open = dr_mode_open, 852 .read = seq_read, 853 .llseek = seq_lseek, 854 .release = single_release, 855 }; 856 857 int dwc2_debugfs_init(struct dwc2_hsotg *hsotg) 858 { 859 int ret; 860 struct dentry *file; 861 862 hsotg->debug_root = debugfs_create_dir(dev_name(hsotg->dev), NULL); 863 if (!hsotg->debug_root) { 864 ret = -ENOMEM; 865 goto err0; 866 } 867 868 file = debugfs_create_file("params", 0444, 869 hsotg->debug_root, 870 hsotg, ¶ms_fops); 871 if (IS_ERR(file)) 872 dev_err(hsotg->dev, "%s: failed to create params\n", __func__); 873 874 file = debugfs_create_file("hw_params", 0444, 875 hsotg->debug_root, 876 hsotg, &hw_params_fops); 877 if (IS_ERR(file)) 878 dev_err(hsotg->dev, "%s: failed to create hw_params\n", 879 __func__); 880 881 file = debugfs_create_file("dr_mode", 0444, 882 hsotg->debug_root, 883 hsotg, &dr_mode_fops); 884 if (IS_ERR(file)) 885 dev_err(hsotg->dev, "%s: failed to create dr_mode\n", __func__); 886 887 /* Add gadget debugfs nodes */ 888 dwc2_hsotg_create_debug(hsotg); 889 890 hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset), 891 GFP_KERNEL); 892 if (!hsotg->regset) { 893 ret = -ENOMEM; 894 goto err1; 895 } 896 897 hsotg->regset->regs = dwc2_regs; 898 hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs); 899 hsotg->regset->base = hsotg->regs; 900 901 file = debugfs_create_regset32("regdump", 0444, hsotg->debug_root, 902 hsotg->regset); 903 if (!file) { 904 ret = -ENOMEM; 905 goto err1; 906 } 907 908 return 0; 909 err1: 910 debugfs_remove_recursive(hsotg->debug_root); 911 err0: 912 return ret; 913 } 914 915 void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg) 916 { 917 debugfs_remove_recursive(hsotg->debug_root); 918 hsotg->debug_root = NULL; 919 } 920