drivers/usb/dwc2/debugfs.c

   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 <[email protected]>
   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->regs + 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         void __iomem *regs = hsotg->regs;
 130         int idx;
 131
 132         seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n",
 133                    dwc2_readl(regs + DCFG),
 134                  dwc2_readl(regs + DCTL),
 135                  dwc2_readl(regs + DSTS));
 136
 137         seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n",
 138                    dwc2_readl(regs + DIEPMSK), dwc2_readl(regs + DOEPMSK));
 139
 140         seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n",
 141                    dwc2_readl(regs + GINTMSK),
 142                    dwc2_readl(regs + GINTSTS));
 143
 144         seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n",
 145                    dwc2_readl(regs + DAINTMSK),
 146                    dwc2_readl(regs + DAINT));
 147
 148         seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n",
 149                    dwc2_readl(regs + GNPTXSTS),
 150                    dwc2_readl(regs + GRXSTSR));
 151
 152         seq_puts(seq, "\nEndpoint status:\n");
 153
 154         for (idx = 0; idx < hsotg->num_of_eps; idx++) {
 155                 u32 in, out;
 156
 157                 in = dwc2_readl(regs + DIEPCTL(idx));
 158                 out = dwc2_readl(regs + DOEPCTL(idx));
 159
 160                 seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x",
 161                            idx, in, out);
 162
 163                 in = dwc2_readl(regs + DIEPTSIZ(idx));
 164                 out = dwc2_readl(regs + DOEPTSIZ(idx));
 165
 166                 seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x",
 167                            in, out);
 168
 169                 seq_puts(seq, "\n");
 170         }
 171
 172         return 0;
 173 }
 174 DEFINE_SHOW_ATTRIBUTE(state);
 175
 176 /**
 177  * fifo_show - debugfs: show the fifo information
 178  * @seq: The seq_file to write data to.
 179  * @v: Unused parameter.
 180  *
 181  * Show the FIFO information for the overall fifo and all the
 182  * periodic transmission FIFOs.
 183  */
 184 static int fifo_show(struct seq_file *seq, void *v)
 185 {
 186         struct dwc2_hsotg *hsotg = seq->private;
 187         void __iomem *regs = hsotg->regs;
 188         u32 val;
 189         int idx;
 190
 191         seq_puts(seq, "Non-periodic FIFOs:\n");
 192         seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(regs + GRXFSIZ));
 193
 194         val = dwc2_readl(regs + GNPTXFSIZ);
 195         seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n",
 196                    val >> FIFOSIZE_DEPTH_SHIFT,
 197                    val & FIFOSIZE_STARTADDR_MASK);
 198
 199         seq_puts(seq, "\nPeriodic TXFIFOs:\n");
 200
 201         for (idx = 1; idx < hsotg->num_of_eps; idx++) {
 202                 val = dwc2_readl(regs + DPTXFSIZN(idx));
 203
 204                 seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,
 205                            val >> FIFOSIZE_DEPTH_SHIFT,
 206                            val & FIFOSIZE_STARTADDR_MASK);
 207         }
 208
 209         return 0;
 210 }
 211 DEFINE_SHOW_ATTRIBUTE(fifo);
 212
 213 static const char *decode_direction(int is_in)
 214 {
 215         return is_in ? "in" : "out";
 216 }
 217
 218 /**
 219  * ep_show - debugfs: show the state of an endpoint.
 220  * @seq: The seq_file to write data to.
 221  * @v: Unused parameter.
 222  *
 223  * This debugfs entry shows the state of the given endpoint (one is
 224  * registered for each available).
 225  */
 226 static int ep_show(struct seq_file *seq, void *v)
 227 {
 228         struct dwc2_hsotg_ep *ep = seq->private;
 229         struct dwc2_hsotg *hsotg = ep->parent;
 230         struct dwc2_hsotg_req *req;
 231         void __iomem *regs = hsotg->regs;
 232         int index = ep->index;
 233         int show_limit = 15;
 234         unsigned long flags;
 235
 236         seq_printf(seq, "Endpoint index %d, named %s,  dir %s:\n",
 237                    ep->index, ep->ep.name, decode_direction(ep->dir_in));
 238
 239         /* first show the register state */
 240
 241         seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n",
 242                    dwc2_readl(regs + DIEPCTL(index)),
 243                    dwc2_readl(regs + DOEPCTL(index)));
 244
 245         seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n",
 246                    dwc2_readl(regs + DIEPDMA(index)),
 247                    dwc2_readl(regs + DOEPDMA(index)));
 248
 249         seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n",
 250                    dwc2_readl(regs + DIEPINT(index)),
 251                    dwc2_readl(regs + DOEPINT(index)));
 252
 253         seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n",
 254                    dwc2_readl(regs + DIEPTSIZ(index)),
 255                    dwc2_readl(regs + DOEPTSIZ(index)));
 256
 257         seq_puts(seq, "\n");
 258         seq_printf(seq, "mps %d\n", ep->ep.maxpacket);
 259         seq_printf(seq, "total_data=%ld\n", ep->total_data);
 260
 261         seq_printf(seq, "request list (%p,%p):\n",
 262                    ep->queue.next, ep->queue.prev);
 263
 264         spin_lock_irqsave(&hsotg->lock, flags);
 265
 266         list_for_each_entry(req, &ep->queue, queue) {
 267                 if (--show_limit < 0) {
 268                         seq_puts(seq, "not showing more requests...\n");
 269                         break;
 270                 }
 271
 272                 seq_printf(seq, "%c req %p: %d bytes @%p, ",
 273                            req == ep->req ? '*' : ' ',
 274                            req, req->req.length, req->req.buf);
 275                 seq_printf(seq, "%d done, res %d\n",
 276                            req->req.actual, req->req.status);
 277         }
 278
 279         spin_unlock_irqrestore(&hsotg->lock, flags);
 280
 281         return 0;
 282 }
 283 DEFINE_SHOW_ATTRIBUTE(ep);
 284
 285 /**
 286  * dwc2_hsotg_create_debug - create debugfs directory and files
 287  * @hsotg: The driver state
 288  *
 289  * Create the debugfs files to allow the user to get information
 290  * about the state of the system. The directory name is created
 291  * with the same name as the device itself, in case we end up
 292  * with multiple blocks in future systems.
 293  */
 294 static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg)
 295 {
 296         struct dentry *root;
 297         unsigned int epidx;
 298
 299         root = hsotg->debug_root;
 300
 301         /* create general state file */
 302         debugfs_create_file("state", 0444, root, hsotg, &state_fops);
 303         debugfs_create_file("testmode", 0644, root, hsotg, &testmode_fops);
 304         debugfs_create_file("fifo", 0444, root, hsotg, &fifo_fops);
 305
 306         /* Create one file for each out endpoint */
 307         for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) {
 308                 struct dwc2_hsotg_ep *ep;
 309
 310                 ep = hsotg->eps_out[epidx];
 311                 if (ep)
 312                         debugfs_create_file(ep->name, 0444, root, ep, &ep_fops);
 313         }
 314         /* Create one file for each in endpoint. EP0 is handled with out eps */
 315         for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) {
 316                 struct dwc2_hsotg_ep *ep;
 317
 318                 ep = hsotg->eps_in[epidx];
 319                 if (ep)
 320                         debugfs_create_file(ep->name, 0444, root, ep, &ep_fops);
 321         }
 322 }
 323 #else
 324 static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {}
 325 #endif
 326
 327 /* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */
 328
 329 #define dump_register(nm)       \
 330 {                               \
 331         .name   = #nm,          \
 332         .offset = nm,           \
 333 }
 334
 335 static const struct debugfs_reg32 dwc2_regs[] = {
 336         /*
 337          * Accessing registers like this can trigger mode mismatch interrupt.
 338          * However, according to dwc2 databook, the register access, in this
 339          * case, is completed on the processor bus but is ignored by the core
 340          * and does not affect its operation.
 341          */
 342         dump_register(GOTGCTL),
 343         dump_register(GOTGINT),
 344         dump_register(GAHBCFG),
 345         dump_register(GUSBCFG),
 346         dump_register(GRSTCTL),
 347         dump_register(GINTSTS),
 348         dump_register(GINTMSK),
 349         dump_register(GRXSTSR),
 350         /* Omit GRXSTSP */
 351         dump_register(GRXFSIZ),
 352         dump_register(GNPTXFSIZ),
 353         dump_register(GNPTXSTS),
 354         dump_register(GI2CCTL),
 355         dump_register(GPVNDCTL),
 356         dump_register(GGPIO),
 357         dump_register(GUID),
 358         dump_register(GSNPSID),
 359         dump_register(GHWCFG1),
 360         dump_register(GHWCFG2),
 361         dump_register(GHWCFG3),
 362         dump_register(GHWCFG4),
 363         dump_register(GLPMCFG),
 364         dump_register(GPWRDN),
 365         dump_register(GDFIFOCFG),
 366         dump_register(ADPCTL),
 367         dump_register(HPTXFSIZ),
 368         dump_register(DPTXFSIZN(1)),
 369         dump_register(DPTXFSIZN(2)),
 370         dump_register(DPTXFSIZN(3)),
 371         dump_register(DPTXFSIZN(4)),
 372         dump_register(DPTXFSIZN(5)),
 373         dump_register(DPTXFSIZN(6)),
 374         dump_register(DPTXFSIZN(7)),
 375         dump_register(DPTXFSIZN(8)),
 376         dump_register(DPTXFSIZN(9)),
 377         dump_register(DPTXFSIZN(10)),
 378         dump_register(DPTXFSIZN(11)),
 379         dump_register(DPTXFSIZN(12)),
 380         dump_register(DPTXFSIZN(13)),
 381         dump_register(DPTXFSIZN(14)),
 382         dump_register(DPTXFSIZN(15)),
 383         dump_register(DCFG),
 384         dump_register(DCTL),
 385         dump_register(DSTS),
 386         dump_register(DIEPMSK),
 387         dump_register(DOEPMSK),
 388         dump_register(DAINT),
 389         dump_register(DAINTMSK),
 390         dump_register(DTKNQR1),
 391         dump_register(DTKNQR2),
 392         dump_register(DTKNQR3),
 393         dump_register(DTKNQR4),
 394         dump_register(DVBUSDIS),
 395         dump_register(DVBUSPULSE),
 396         dump_register(DIEPCTL(0)),
 397         dump_register(DIEPCTL(1)),
 398         dump_register(DIEPCTL(2)),
 399         dump_register(DIEPCTL(3)),
 400         dump_register(DIEPCTL(4)),
 401         dump_register(DIEPCTL(5)),
 402         dump_register(DIEPCTL(6)),
 403         dump_register(DIEPCTL(7)),
 404         dump_register(DIEPCTL(8)),
 405         dump_register(DIEPCTL(9)),
 406         dump_register(DIEPCTL(10)),
 407         dump_register(DIEPCTL(11)),
 408         dump_register(DIEPCTL(12)),
 409         dump_register(DIEPCTL(13)),
 410         dump_register(DIEPCTL(14)),
 411         dump_register(DIEPCTL(15)),
 412         dump_register(DOEPCTL(0)),
 413         dump_register(DOEPCTL(1)),
 414         dump_register(DOEPCTL(2)),
 415         dump_register(DOEPCTL(3)),
 416         dump_register(DOEPCTL(4)),
 417         dump_register(DOEPCTL(5)),
 418         dump_register(DOEPCTL(6)),
 419         dump_register(DOEPCTL(7)),
 420         dump_register(DOEPCTL(8)),
 421         dump_register(DOEPCTL(9)),
 422         dump_register(DOEPCTL(10)),
 423         dump_register(DOEPCTL(11)),
 424         dump_register(DOEPCTL(12)),
 425         dump_register(DOEPCTL(13)),
 426         dump_register(DOEPCTL(14)),
 427         dump_register(DOEPCTL(15)),
 428         dump_register(DIEPINT(0)),
 429         dump_register(DIEPINT(1)),
 430         dump_register(DIEPINT(2)),
 431         dump_register(DIEPINT(3)),
 432         dump_register(DIEPINT(4)),
 433         dump_register(DIEPINT(5)),
 434         dump_register(DIEPINT(6)),
 435         dump_register(DIEPINT(7)),
 436         dump_register(DIEPINT(8)),
 437         dump_register(DIEPINT(9)),
 438         dump_register(DIEPINT(10)),
 439         dump_register(DIEPINT(11)),
 440         dump_register(DIEPINT(12)),
 441         dump_register(DIEPINT(13)),
 442         dump_register(DIEPINT(14)),
 443         dump_register(DIEPINT(15)),
 444         dump_register(DOEPINT(0)),
 445         dump_register(DOEPINT(1)),
 446         dump_register(DOEPINT(2)),
 447         dump_register(DOEPINT(3)),
 448         dump_register(DOEPINT(4)),
 449         dump_register(DOEPINT(5)),
 450         dump_register(DOEPINT(6)),
 451         dump_register(DOEPINT(7)),
 452         dump_register(DOEPINT(8)),
 453         dump_register(DOEPINT(9)),
 454         dump_register(DOEPINT(10)),
 455         dump_register(DOEPINT(11)),
 456         dump_register(DOEPINT(12)),
 457         dump_register(DOEPINT(13)),
 458         dump_register(DOEPINT(14)),
 459         dump_register(DOEPINT(15)),
 460         dump_register(DIEPTSIZ(0)),
 461         dump_register(DIEPTSIZ(1)),
 462         dump_register(DIEPTSIZ(2)),
 463         dump_register(DIEPTSIZ(3)),
 464         dump_register(DIEPTSIZ(4)),
 465         dump_register(DIEPTSIZ(5)),
 466         dump_register(DIEPTSIZ(6)),
 467         dump_register(DIEPTSIZ(7)),
 468         dump_register(DIEPTSIZ(8)),
 469         dump_register(DIEPTSIZ(9)),
 470         dump_register(DIEPTSIZ(10)),
 471         dump_register(DIEPTSIZ(11)),
 472         dump_register(DIEPTSIZ(12)),
 473         dump_register(DIEPTSIZ(13)),
 474         dump_register(DIEPTSIZ(14)),
 475         dump_register(DIEPTSIZ(15)),
 476         dump_register(DOEPTSIZ(0)),
 477         dump_register(DOEPTSIZ(1)),
 478         dump_register(DOEPTSIZ(2)),
 479         dump_register(DOEPTSIZ(3)),
 480         dump_register(DOEPTSIZ(4)),
 481         dump_register(DOEPTSIZ(5)),
 482         dump_register(DOEPTSIZ(6)),
 483         dump_register(DOEPTSIZ(7)),
 484         dump_register(DOEPTSIZ(8)),
 485         dump_register(DOEPTSIZ(9)),
 486         dump_register(DOEPTSIZ(10)),
 487         dump_register(DOEPTSIZ(11)),
 488         dump_register(DOEPTSIZ(12)),
 489         dump_register(DOEPTSIZ(13)),
 490         dump_register(DOEPTSIZ(14)),
 491         dump_register(DOEPTSIZ(15)),
 492         dump_register(DIEPDMA(0)),
 493         dump_register(DIEPDMA(1)),
 494         dump_register(DIEPDMA(2)),
 495         dump_register(DIEPDMA(3)),
 496         dump_register(DIEPDMA(4)),
 497         dump_register(DIEPDMA(5)),
 498         dump_register(DIEPDMA(6)),
 499         dump_register(DIEPDMA(7)),
 500         dump_register(DIEPDMA(8)),
 501         dump_register(DIEPDMA(9)),
 502         dump_register(DIEPDMA(10)),
 503         dump_register(DIEPDMA(11)),
 504         dump_register(DIEPDMA(12)),
 505         dump_register(DIEPDMA(13)),
 506         dump_register(DIEPDMA(14)),
 507         dump_register(DIEPDMA(15)),
 508         dump_register(DOEPDMA(0)),
 509         dump_register(DOEPDMA(1)),
 510         dump_register(DOEPDMA(2)),
 511         dump_register(DOEPDMA(3)),
 512         dump_register(DOEPDMA(4)),
 513         dump_register(DOEPDMA(5)),
 514         dump_register(DOEPDMA(6)),
 515         dump_register(DOEPDMA(7)),
 516         dump_register(DOEPDMA(8)),
 517         dump_register(DOEPDMA(9)),
 518         dump_register(DOEPDMA(10)),
 519         dump_register(DOEPDMA(11)),
 520         dump_register(DOEPDMA(12)),
 521         dump_register(DOEPDMA(13)),
 522         dump_register(DOEPDMA(14)),
 523         dump_register(DOEPDMA(15)),
 524         dump_register(DTXFSTS(0)),
 525         dump_register(DTXFSTS(1)),
 526         dump_register(DTXFSTS(2)),
 527         dump_register(DTXFSTS(3)),
 528         dump_register(DTXFSTS(4)),
 529         dump_register(DTXFSTS(5)),
 530         dump_register(DTXFSTS(6)),
 531         dump_register(DTXFSTS(7)),
 532         dump_register(DTXFSTS(8)),
 533         dump_register(DTXFSTS(9)),
 534         dump_register(DTXFSTS(10)),
 535         dump_register(DTXFSTS(11)),
 536         dump_register(DTXFSTS(12)),
 537         dump_register(DTXFSTS(13)),
 538         dump_register(DTXFSTS(14)),
 539         dump_register(DTXFSTS(15)),
 540         dump_register(PCGCTL),
 541         dump_register(HCFG),
 542         dump_register(HFIR),
 543         dump_register(HFNUM),
 544         dump_register(HPTXSTS),
 545         dump_register(HAINT),
 546         dump_register(HAINTMSK),
 547         dump_register(HFLBADDR),
 548         dump_register(HPRT0),
 549         dump_register(HCCHAR(0)),
 550         dump_register(HCCHAR(1)),
 551         dump_register(HCCHAR(2)),
 552         dump_register(HCCHAR(3)),
 553         dump_register(HCCHAR(4)),
 554         dump_register(HCCHAR(5)),
 555         dump_register(HCCHAR(6)),
 556         dump_register(HCCHAR(7)),
 557         dump_register(HCCHAR(8)),
 558         dump_register(HCCHAR(9)),
 559         dump_register(HCCHAR(10)),
 560         dump_register(HCCHAR(11)),
 561         dump_register(HCCHAR(12)),
 562         dump_register(HCCHAR(13)),
 563         dump_register(HCCHAR(14)),
 564         dump_register(HCCHAR(15)),
 565         dump_register(HCSPLT(0)),
 566         dump_register(HCSPLT(1)),
 567         dump_register(HCSPLT(2)),
 568         dump_register(HCSPLT(3)),
 569         dump_register(HCSPLT(4)),
 570         dump_register(HCSPLT(5)),
 571         dump_register(HCSPLT(6)),
 572         dump_register(HCSPLT(7)),
 573         dump_register(HCSPLT(8)),
 574         dump_register(HCSPLT(9)),
 575         dump_register(HCSPLT(10)),
 576         dump_register(HCSPLT(11)),
 577         dump_register(HCSPLT(12)),
 578         dump_register(HCSPLT(13)),
 579         dump_register(HCSPLT(14)),
 580         dump_register(HCSPLT(15)),
 581         dump_register(HCINT(0)),
 582         dump_register(HCINT(1)),
 583         dump_register(HCINT(2)),
 584         dump_register(HCINT(3)),
 585         dump_register(HCINT(4)),
 586         dump_register(HCINT(5)),
 587         dump_register(HCINT(6)),
 588         dump_register(HCINT(7)),
 589         dump_register(HCINT(8)),
 590         dump_register(HCINT(9)),
 591         dump_register(HCINT(10)),
 592         dump_register(HCINT(11)),
 593         dump_register(HCINT(12)),
 594         dump_register(HCINT(13)),
 595         dump_register(HCINT(14)),
 596         dump_register(HCINT(15)),
 597         dump_register(HCINTMSK(0)),
 598         dump_register(HCINTMSK(1)),
 599         dump_register(HCINTMSK(2)),
 600         dump_register(HCINTMSK(3)),
 601         dump_register(HCINTMSK(4)),
 602         dump_register(HCINTMSK(5)),
 603         dump_register(HCINTMSK(6)),
 604         dump_register(HCINTMSK(7)),
 605         dump_register(HCINTMSK(8)),
 606         dump_register(HCINTMSK(9)),
 607         dump_register(HCINTMSK(10)),
 608         dump_register(HCINTMSK(11)),
 609         dump_register(HCINTMSK(12)),
 610         dump_register(HCINTMSK(13)),
 611         dump_register(HCINTMSK(14)),
 612         dump_register(HCINTMSK(15)),
 613         dump_register(HCTSIZ(0)),
 614         dump_register(HCTSIZ(1)),
 615         dump_register(HCTSIZ(2)),
 616         dump_register(HCTSIZ(3)),
 617         dump_register(HCTSIZ(4)),
 618         dump_register(HCTSIZ(5)),
 619         dump_register(HCTSIZ(6)),
 620         dump_register(HCTSIZ(7)),
 621         dump_register(HCTSIZ(8)),
 622         dump_register(HCTSIZ(9)),
 623         dump_register(HCTSIZ(10)),
 624         dump_register(HCTSIZ(11)),
 625         dump_register(HCTSIZ(12)),
 626         dump_register(HCTSIZ(13)),
 627         dump_register(HCTSIZ(14)),
 628         dump_register(HCTSIZ(15)),
 629         dump_register(HCDMA(0)),
 630         dump_register(HCDMA(1)),
 631         dump_register(HCDMA(2)),
 632         dump_register(HCDMA(3)),
 633         dump_register(HCDMA(4)),
 634         dump_register(HCDMA(5)),
 635         dump_register(HCDMA(6)),
 636         dump_register(HCDMA(7)),
 637         dump_register(HCDMA(8)),
 638         dump_register(HCDMA(9)),
 639         dump_register(HCDMA(10)),
 640         dump_register(HCDMA(11)),
 641         dump_register(HCDMA(12)),
 642         dump_register(HCDMA(13)),
 643         dump_register(HCDMA(14)),
 644         dump_register(HCDMA(15)),
 645         dump_register(HCDMAB(0)),
 646         dump_register(HCDMAB(1)),
 647         dump_register(HCDMAB(2)),
 648         dump_register(HCDMAB(3)),
 649         dump_register(HCDMAB(4)),
 650         dump_register(HCDMAB(5)),
 651         dump_register(HCDMAB(6)),
 652         dump_register(HCDMAB(7)),
 653         dump_register(HCDMAB(8)),
 654         dump_register(HCDMAB(9)),
 655         dump_register(HCDMAB(10)),
 656         dump_register(HCDMAB(11)),
 657         dump_register(HCDMAB(12)),
 658         dump_register(HCDMAB(13)),
 659         dump_register(HCDMAB(14)),
 660         dump_register(HCDMAB(15)),
 661 };
 662
 663 #define print_param(_seq, _ptr, _param) \
 664 seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param)
 665
 666 #define print_param_hex(_seq, _ptr, _param) \
 667 seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param)
 668
 669 static int params_show(struct seq_file *seq, void *v)
 670 {
 671         struct dwc2_hsotg *hsotg = seq->private;
 672         struct dwc2_core_params *p = &hsotg->params;
 673         int i;
 674
 675         print_param(seq, p, otg_cap);
 676         print_param(seq, p, dma_desc_enable);
 677         print_param(seq, p, dma_desc_fs_enable);
 678         print_param(seq, p, speed);
 679         print_param(seq, p, enable_dynamic_fifo);
 680         print_param(seq, p, en_multiple_tx_fifo);
 681         print_param(seq, p, host_rx_fifo_size);
 682         print_param(seq, p, host_nperio_tx_fifo_size);
 683         print_param(seq, p, host_perio_tx_fifo_size);
 684         print_param(seq, p, max_transfer_size);
 685         print_param(seq, p, max_packet_count);
 686         print_param(seq, p, host_channels);
 687         print_param(seq, p, phy_type);
 688         print_param(seq, p, phy_utmi_width);
 689         print_param(seq, p, phy_ulpi_ddr);
 690         print_param(seq, p, phy_ulpi_ext_vbus);
 691         print_param(seq, p, i2c_enable);
 692         print_param(seq, p, ipg_isoc_en);
 693         print_param(seq, p, ulpi_fs_ls);
 694         print_param(seq, p, host_support_fs_ls_low_power);
 695         print_param(seq, p, host_ls_low_power_phy_clk);
 696         print_param(seq, p, ts_dline);
 697         print_param(seq, p, reload_ctl);
 698         print_param_hex(seq, p, ahbcfg);
 699         print_param(seq, p, uframe_sched);
 700         print_param(seq, p, external_id_pin_ctl);
 701         print_param(seq, p, power_down);
 702         print_param(seq, p, lpm);
 703         print_param(seq, p, lpm_clock_gating);
 704         print_param(seq, p, besl);
 705         print_param(seq, p, hird_threshold_en);
 706         print_param(seq, p, hird_threshold);
 707         print_param(seq, p, host_dma);
 708         print_param(seq, p, g_dma);
 709         print_param(seq, p, g_dma_desc);
 710         print_param(seq, p, g_rx_fifo_size);
 711         print_param(seq, p, g_np_tx_fifo_size);
 712
 713         for (i = 0; i < MAX_EPS_CHANNELS; i++) {
 714                 char str[32];
 715
 716                 snprintf(str, 32, "g_tx_fifo_size[%d]", i);
 717                 seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]);
 718         }
 719
 720         return 0;
 721 }
 722 DEFINE_SHOW_ATTRIBUTE(params);
 723
 724 static int hw_params_show(struct seq_file *seq, void *v)
 725 {
 726         struct dwc2_hsotg *hsotg = seq->private;
 727         struct dwc2_hw_params *hw = &hsotg->hw_params;
 728
 729         print_param(seq, hw, op_mode);
 730         print_param(seq, hw, arch);
 731         print_param(seq, hw, dma_desc_enable);
 732         print_param(seq, hw, enable_dynamic_fifo);
 733         print_param(seq, hw, en_multiple_tx_fifo);
 734         print_param(seq, hw, rx_fifo_size);
 735         print_param(seq, hw, host_nperio_tx_fifo_size);
 736         print_param(seq, hw, dev_nperio_tx_fifo_size);
 737         print_param(seq, hw, host_perio_tx_fifo_size);
 738         print_param(seq, hw, nperio_tx_q_depth);
 739         print_param(seq, hw, host_perio_tx_q_depth);
 740         print_param(seq, hw, dev_token_q_depth);
 741         print_param(seq, hw, max_transfer_size);
 742         print_param(seq, hw, max_packet_count);
 743         print_param(seq, hw, host_channels);
 744         print_param(seq, hw, hs_phy_type);
 745         print_param(seq, hw, fs_phy_type);
 746         print_param(seq, hw, i2c_enable);
 747         print_param(seq, hw, num_dev_ep);
 748         print_param(seq, hw, num_dev_perio_in_ep);
 749         print_param(seq, hw, total_fifo_size);
 750         print_param(seq, hw, power_optimized);
 751         print_param(seq, hw, utmi_phy_data_width);
 752         print_param_hex(seq, hw, snpsid);
 753         print_param_hex(seq, hw, dev_ep_dirs);
 754
 755         return 0;
 756 }
 757 DEFINE_SHOW_ATTRIBUTE(hw_params);
 758
 759 static int dr_mode_show(struct seq_file *seq, void *v)
 760 {
 761         struct dwc2_hsotg *hsotg = seq->private;
 762         const char *dr_mode = "";
 763
 764         device_property_read_string(hsotg->dev, "dr_mode", &dr_mode);
 765         seq_printf(seq, "%s\n", dr_mode);
 766         return 0;
 767 }
 768 DEFINE_SHOW_ATTRIBUTE(dr_mode);
 769
 770 int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
 771 {
 772         int                     ret;
 773         struct dentry           *root;
 774
 775         root = debugfs_create_dir(dev_name(hsotg->dev), NULL);
 776         hsotg->debug_root = root;
 777
 778         debugfs_create_file("params", 0444, root, hsotg, &params_fops);
 779         debugfs_create_file("hw_params", 0444, root, hsotg, &hw_params_fops);
 780         debugfs_create_file("dr_mode", 0444, root, hsotg, &dr_mode_fops);
 781
 782         /* Add gadget debugfs nodes */
 783         dwc2_hsotg_create_debug(hsotg);
 784
 785         hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset),
 786                                                                 GFP_KERNEL);
 787         if (!hsotg->regset) {
 788                 ret = -ENOMEM;
 789                 goto err;
 790         }
 791
 792         hsotg->regset->regs = dwc2_regs;
 793         hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs);
 794         hsotg->regset->base = hsotg->regs;
 795
 796         debugfs_create_regset32("regdump", 0444, root, hsotg->regset);
 797
 798         return 0;
 799 err:
 800         debugfs_remove_recursive(hsotg->debug_root);
 801         return ret;
 802 }
 803
 804 void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg)
 805 {
 806         debugfs_remove_recursive(hsotg->debug_root);
 807         hsotg->debug_root = NULL;
 808 }