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 <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, &params_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 }