drivers/usb/dwc3/debugfs.c

   1 /**
   2  * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
   3  *
   4  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
   5  *
   6  * Authors: Felipe Balbi <balbi@ti.com>,
   7  *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions, and the following disclaimer,
  14  *    without modification.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The names of the above-listed copyright holders may not be used
  19  *    to endorse or promote products derived from this software without
  20  *    specific prior written permission.
  21  *
  22  * ALTERNATIVELY, this software may be distributed under the terms of the
  23  * GNU General Public License ("GPL") version 2, as published by the Free
  24  * Software Foundation.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  27  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  28  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  30  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  31  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  32  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  33  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  34  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  35  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  36  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37  */
  38
  39 #include <linux/kernel.h>
  40 #include <linux/slab.h>
  41 #include <linux/ptrace.h>
  42 #include <linux/types.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/debugfs.h>
  45 #include <linux/seq_file.h>
  46 #include <linux/delay.h>
  47
  48 #include <asm/uaccess.h>
  49
  50 #include "core.h"
  51 #include "gadget.h"
  52 #include "io.h"
  53
  54 struct dwc3_register {
  55         const char      *name;
  56         u32             offset;
  57 };
  58
  59 #define dump_register(nm)                               \
  60 {                                                       \
  61         .name   = __stringify(nm),                      \
  62         .offset = DWC3_ ##nm,                           \
  63 }
  64
  65 static const struct dwc3_register dwc3_regs[] = {
  66         dump_register(GSBUSCFG0),
  67         dump_register(GSBUSCFG1),
  68         dump_register(GTXTHRCFG),
  69         dump_register(GRXTHRCFG),
  70         dump_register(GCTL),
  71         dump_register(GEVTEN),
  72         dump_register(GSTS),
  73         dump_register(GSNPSID),
  74         dump_register(GGPIO),
  75         dump_register(GUID),
  76         dump_register(GUCTL),
  77         dump_register(GBUSERRADDR0),
  78         dump_register(GBUSERRADDR1),
  79         dump_register(GPRTBIMAP0),
  80         dump_register(GPRTBIMAP1),
  81         dump_register(GHWPARAMS0),
  82         dump_register(GHWPARAMS1),
  83         dump_register(GHWPARAMS2),
  84         dump_register(GHWPARAMS3),
  85         dump_register(GHWPARAMS4),
  86         dump_register(GHWPARAMS5),
  87         dump_register(GHWPARAMS6),
  88         dump_register(GHWPARAMS7),
  89         dump_register(GDBGFIFOSPACE),
  90         dump_register(GDBGLTSSM),
  91         dump_register(GPRTBIMAP_HS0),
  92         dump_register(GPRTBIMAP_HS1),
  93         dump_register(GPRTBIMAP_FS0),
  94         dump_register(GPRTBIMAP_FS1),
  95
  96         dump_register(GUSB2PHYCFG(0)),
  97         dump_register(GUSB2PHYCFG(1)),
  98         dump_register(GUSB2PHYCFG(2)),
  99         dump_register(GUSB2PHYCFG(3)),
 100         dump_register(GUSB2PHYCFG(4)),
 101         dump_register(GUSB2PHYCFG(5)),
 102         dump_register(GUSB2PHYCFG(6)),
 103         dump_register(GUSB2PHYCFG(7)),
 104         dump_register(GUSB2PHYCFG(8)),
 105         dump_register(GUSB2PHYCFG(9)),
 106         dump_register(GUSB2PHYCFG(10)),
 107         dump_register(GUSB2PHYCFG(11)),
 108         dump_register(GUSB2PHYCFG(12)),
 109         dump_register(GUSB2PHYCFG(13)),
 110         dump_register(GUSB2PHYCFG(14)),
 111         dump_register(GUSB2PHYCFG(15)),
 112
 113         dump_register(GUSB2I2CCTL(0)),
 114         dump_register(GUSB2I2CCTL(1)),
 115         dump_register(GUSB2I2CCTL(2)),
 116         dump_register(GUSB2I2CCTL(3)),
 117         dump_register(GUSB2I2CCTL(4)),
 118         dump_register(GUSB2I2CCTL(5)),
 119         dump_register(GUSB2I2CCTL(6)),
 120         dump_register(GUSB2I2CCTL(7)),
 121         dump_register(GUSB2I2CCTL(8)),
 122         dump_register(GUSB2I2CCTL(9)),
 123         dump_register(GUSB2I2CCTL(10)),
 124         dump_register(GUSB2I2CCTL(11)),
 125         dump_register(GUSB2I2CCTL(12)),
 126         dump_register(GUSB2I2CCTL(13)),
 127         dump_register(GUSB2I2CCTL(14)),
 128         dump_register(GUSB2I2CCTL(15)),
 129
 130         dump_register(GUSB2PHYACC(0)),
 131         dump_register(GUSB2PHYACC(1)),
 132         dump_register(GUSB2PHYACC(2)),
 133         dump_register(GUSB2PHYACC(3)),
 134         dump_register(GUSB2PHYACC(4)),
 135         dump_register(GUSB2PHYACC(5)),
 136         dump_register(GUSB2PHYACC(6)),
 137         dump_register(GUSB2PHYACC(7)),
 138         dump_register(GUSB2PHYACC(8)),
 139         dump_register(GUSB2PHYACC(9)),
 140         dump_register(GUSB2PHYACC(10)),
 141         dump_register(GUSB2PHYACC(11)),
 142         dump_register(GUSB2PHYACC(12)),
 143         dump_register(GUSB2PHYACC(13)),
 144         dump_register(GUSB2PHYACC(14)),
 145         dump_register(GUSB2PHYACC(15)),
 146
 147         dump_register(GUSB3PIPECTL(0)),
 148         dump_register(GUSB3PIPECTL(1)),
 149         dump_register(GUSB3PIPECTL(2)),
 150         dump_register(GUSB3PIPECTL(3)),
 151         dump_register(GUSB3PIPECTL(4)),
 152         dump_register(GUSB3PIPECTL(5)),
 153         dump_register(GUSB3PIPECTL(6)),
 154         dump_register(GUSB3PIPECTL(7)),
 155         dump_register(GUSB3PIPECTL(8)),
 156         dump_register(GUSB3PIPECTL(9)),
 157         dump_register(GUSB3PIPECTL(10)),
 158         dump_register(GUSB3PIPECTL(11)),
 159         dump_register(GUSB3PIPECTL(12)),
 160         dump_register(GUSB3PIPECTL(13)),
 161         dump_register(GUSB3PIPECTL(14)),
 162         dump_register(GUSB3PIPECTL(15)),
 163
 164         dump_register(GTXFIFOSIZ(0)),
 165         dump_register(GTXFIFOSIZ(1)),
 166         dump_register(GTXFIFOSIZ(2)),
 167         dump_register(GTXFIFOSIZ(3)),
 168         dump_register(GTXFIFOSIZ(4)),
 169         dump_register(GTXFIFOSIZ(5)),
 170         dump_register(GTXFIFOSIZ(6)),
 171         dump_register(GTXFIFOSIZ(7)),
 172         dump_register(GTXFIFOSIZ(8)),
 173         dump_register(GTXFIFOSIZ(9)),
 174         dump_register(GTXFIFOSIZ(10)),
 175         dump_register(GTXFIFOSIZ(11)),
 176         dump_register(GTXFIFOSIZ(12)),
 177         dump_register(GTXFIFOSIZ(13)),
 178         dump_register(GTXFIFOSIZ(14)),
 179         dump_register(GTXFIFOSIZ(15)),
 180         dump_register(GTXFIFOSIZ(16)),
 181         dump_register(GTXFIFOSIZ(17)),
 182         dump_register(GTXFIFOSIZ(18)),
 183         dump_register(GTXFIFOSIZ(19)),
 184         dump_register(GTXFIFOSIZ(20)),
 185         dump_register(GTXFIFOSIZ(21)),
 186         dump_register(GTXFIFOSIZ(22)),
 187         dump_register(GTXFIFOSIZ(23)),
 188         dump_register(GTXFIFOSIZ(24)),
 189         dump_register(GTXFIFOSIZ(25)),
 190         dump_register(GTXFIFOSIZ(26)),
 191         dump_register(GTXFIFOSIZ(27)),
 192         dump_register(GTXFIFOSIZ(28)),
 193         dump_register(GTXFIFOSIZ(29)),
 194         dump_register(GTXFIFOSIZ(30)),
 195         dump_register(GTXFIFOSIZ(31)),
 196
 197         dump_register(GRXFIFOSIZ(0)),
 198         dump_register(GRXFIFOSIZ(1)),
 199         dump_register(GRXFIFOSIZ(2)),
 200         dump_register(GRXFIFOSIZ(3)),
 201         dump_register(GRXFIFOSIZ(4)),
 202         dump_register(GRXFIFOSIZ(5)),
 203         dump_register(GRXFIFOSIZ(6)),
 204         dump_register(GRXFIFOSIZ(7)),
 205         dump_register(GRXFIFOSIZ(8)),
 206         dump_register(GRXFIFOSIZ(9)),
 207         dump_register(GRXFIFOSIZ(10)),
 208         dump_register(GRXFIFOSIZ(11)),
 209         dump_register(GRXFIFOSIZ(12)),
 210         dump_register(GRXFIFOSIZ(13)),
 211         dump_register(GRXFIFOSIZ(14)),
 212         dump_register(GRXFIFOSIZ(15)),
 213         dump_register(GRXFIFOSIZ(16)),
 214         dump_register(GRXFIFOSIZ(17)),
 215         dump_register(GRXFIFOSIZ(18)),
 216         dump_register(GRXFIFOSIZ(19)),
 217         dump_register(GRXFIFOSIZ(20)),
 218         dump_register(GRXFIFOSIZ(21)),
 219         dump_register(GRXFIFOSIZ(22)),
 220         dump_register(GRXFIFOSIZ(23)),
 221         dump_register(GRXFIFOSIZ(24)),
 222         dump_register(GRXFIFOSIZ(25)),
 223         dump_register(GRXFIFOSIZ(26)),
 224         dump_register(GRXFIFOSIZ(27)),
 225         dump_register(GRXFIFOSIZ(28)),
 226         dump_register(GRXFIFOSIZ(29)),
 227         dump_register(GRXFIFOSIZ(30)),
 228         dump_register(GRXFIFOSIZ(31)),
 229
 230         dump_register(GEVNTADRLO(0)),
 231         dump_register(GEVNTADRHI(0)),
 232         dump_register(GEVNTSIZ(0)),
 233         dump_register(GEVNTCOUNT(0)),
 234
 235         dump_register(GHWPARAMS8),
 236         dump_register(DCFG),
 237         dump_register(DCTL),
 238         dump_register(DEVTEN),
 239         dump_register(DSTS),
 240         dump_register(DGCMDPAR),
 241         dump_register(DGCMD),
 242         dump_register(DALEPENA),
 243
 244         dump_register(DEPCMDPAR2(0)),
 245         dump_register(DEPCMDPAR2(1)),
 246         dump_register(DEPCMDPAR2(2)),
 247         dump_register(DEPCMDPAR2(3)),
 248         dump_register(DEPCMDPAR2(4)),
 249         dump_register(DEPCMDPAR2(5)),
 250         dump_register(DEPCMDPAR2(6)),
 251         dump_register(DEPCMDPAR2(7)),
 252         dump_register(DEPCMDPAR2(8)),
 253         dump_register(DEPCMDPAR2(9)),
 254         dump_register(DEPCMDPAR2(10)),
 255         dump_register(DEPCMDPAR2(11)),
 256         dump_register(DEPCMDPAR2(12)),
 257         dump_register(DEPCMDPAR2(13)),
 258         dump_register(DEPCMDPAR2(14)),
 259         dump_register(DEPCMDPAR2(15)),
 260         dump_register(DEPCMDPAR2(16)),
 261         dump_register(DEPCMDPAR2(17)),
 262         dump_register(DEPCMDPAR2(18)),
 263         dump_register(DEPCMDPAR2(19)),
 264         dump_register(DEPCMDPAR2(20)),
 265         dump_register(DEPCMDPAR2(21)),
 266         dump_register(DEPCMDPAR2(22)),
 267         dump_register(DEPCMDPAR2(23)),
 268         dump_register(DEPCMDPAR2(24)),
 269         dump_register(DEPCMDPAR2(25)),
 270         dump_register(DEPCMDPAR2(26)),
 271         dump_register(DEPCMDPAR2(27)),
 272         dump_register(DEPCMDPAR2(28)),
 273         dump_register(DEPCMDPAR2(29)),
 274         dump_register(DEPCMDPAR2(30)),
 275         dump_register(DEPCMDPAR2(31)),
 276
 277         dump_register(DEPCMDPAR1(0)),
 278         dump_register(DEPCMDPAR1(1)),
 279         dump_register(DEPCMDPAR1(2)),
 280         dump_register(DEPCMDPAR1(3)),
 281         dump_register(DEPCMDPAR1(4)),
 282         dump_register(DEPCMDPAR1(5)),
 283         dump_register(DEPCMDPAR1(6)),
 284         dump_register(DEPCMDPAR1(7)),
 285         dump_register(DEPCMDPAR1(8)),
 286         dump_register(DEPCMDPAR1(9)),
 287         dump_register(DEPCMDPAR1(10)),
 288         dump_register(DEPCMDPAR1(11)),
 289         dump_register(DEPCMDPAR1(12)),
 290         dump_register(DEPCMDPAR1(13)),
 291         dump_register(DEPCMDPAR1(14)),
 292         dump_register(DEPCMDPAR1(15)),
 293         dump_register(DEPCMDPAR1(16)),
 294         dump_register(DEPCMDPAR1(17)),
 295         dump_register(DEPCMDPAR1(18)),
 296         dump_register(DEPCMDPAR1(19)),
 297         dump_register(DEPCMDPAR1(20)),
 298         dump_register(DEPCMDPAR1(21)),
 299         dump_register(DEPCMDPAR1(22)),
 300         dump_register(DEPCMDPAR1(23)),
 301         dump_register(DEPCMDPAR1(24)),
 302         dump_register(DEPCMDPAR1(25)),
 303         dump_register(DEPCMDPAR1(26)),
 304         dump_register(DEPCMDPAR1(27)),
 305         dump_register(DEPCMDPAR1(28)),
 306         dump_register(DEPCMDPAR1(29)),
 307         dump_register(DEPCMDPAR1(30)),
 308         dump_register(DEPCMDPAR1(31)),
 309
 310         dump_register(DEPCMDPAR0(0)),
 311         dump_register(DEPCMDPAR0(1)),
 312         dump_register(DEPCMDPAR0(2)),
 313         dump_register(DEPCMDPAR0(3)),
 314         dump_register(DEPCMDPAR0(4)),
 315         dump_register(DEPCMDPAR0(5)),
 316         dump_register(DEPCMDPAR0(6)),
 317         dump_register(DEPCMDPAR0(7)),
 318         dump_register(DEPCMDPAR0(8)),
 319         dump_register(DEPCMDPAR0(9)),
 320         dump_register(DEPCMDPAR0(10)),
 321         dump_register(DEPCMDPAR0(11)),
 322         dump_register(DEPCMDPAR0(12)),
 323         dump_register(DEPCMDPAR0(13)),
 324         dump_register(DEPCMDPAR0(14)),
 325         dump_register(DEPCMDPAR0(15)),
 326         dump_register(DEPCMDPAR0(16)),
 327         dump_register(DEPCMDPAR0(17)),
 328         dump_register(DEPCMDPAR0(18)),
 329         dump_register(DEPCMDPAR0(19)),
 330         dump_register(DEPCMDPAR0(20)),
 331         dump_register(DEPCMDPAR0(21)),
 332         dump_register(DEPCMDPAR0(22)),
 333         dump_register(DEPCMDPAR0(23)),
 334         dump_register(DEPCMDPAR0(24)),
 335         dump_register(DEPCMDPAR0(25)),
 336         dump_register(DEPCMDPAR0(26)),
 337         dump_register(DEPCMDPAR0(27)),
 338         dump_register(DEPCMDPAR0(28)),
 339         dump_register(DEPCMDPAR0(29)),
 340         dump_register(DEPCMDPAR0(30)),
 341         dump_register(DEPCMDPAR0(31)),
 342
 343         dump_register(DEPCMD(0)),
 344         dump_register(DEPCMD(1)),
 345         dump_register(DEPCMD(2)),
 346         dump_register(DEPCMD(3)),
 347         dump_register(DEPCMD(4)),
 348         dump_register(DEPCMD(5)),
 349         dump_register(DEPCMD(6)),
 350         dump_register(DEPCMD(7)),
 351         dump_register(DEPCMD(8)),
 352         dump_register(DEPCMD(9)),
 353         dump_register(DEPCMD(10)),
 354         dump_register(DEPCMD(11)),
 355         dump_register(DEPCMD(12)),
 356         dump_register(DEPCMD(13)),
 357         dump_register(DEPCMD(14)),
 358         dump_register(DEPCMD(15)),
 359         dump_register(DEPCMD(16)),
 360         dump_register(DEPCMD(17)),
 361         dump_register(DEPCMD(18)),
 362         dump_register(DEPCMD(19)),
 363         dump_register(DEPCMD(20)),
 364         dump_register(DEPCMD(21)),
 365         dump_register(DEPCMD(22)),
 366         dump_register(DEPCMD(23)),
 367         dump_register(DEPCMD(24)),
 368         dump_register(DEPCMD(25)),
 369         dump_register(DEPCMD(26)),
 370         dump_register(DEPCMD(27)),
 371         dump_register(DEPCMD(28)),
 372         dump_register(DEPCMD(29)),
 373         dump_register(DEPCMD(30)),
 374         dump_register(DEPCMD(31)),
 375
 376         dump_register(OCFG),
 377         dump_register(OCTL),
 378         dump_register(OEVTEN),
 379         dump_register(OSTS),
 380 };
 381
 382 static int dwc3_regdump_show(struct seq_file *s, void *unused)
 383 {
 384         struct dwc3             *dwc = s->private;
 385         int                     i;
 386
 387         seq_printf(s, "DesignWare USB3 Core Register Dump\n");
 388
 389         for (i = 0; i < ARRAY_SIZE(dwc3_regs); i++) {
 390                 seq_printf(s, "%-20s :    %08x\n", dwc3_regs[i].name,
 391                                 dwc3_readl(dwc->regs, dwc3_regs[i].offset));
 392         }
 393
 394         return 0;
 395 }
 396
 397 static int dwc3_regdump_open(struct inode *inode, struct file *file)
 398 {
 399         return single_open(file, dwc3_regdump_show, inode->i_private);
 400 }
 401
 402 static const struct file_operations dwc3_regdump_fops = {
 403         .open                   = dwc3_regdump_open,
 404         .read                   = seq_read,
 405         .release                = single_release,
 406 };
 407
 408 int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
 409 {
 410         struct dentry           *root;
 411         struct dentry           *file;
 412         int                     ret;
 413
 414         root = debugfs_create_dir(dev_name(dwc->dev), NULL);
 415         if (IS_ERR(root)){
 416                 ret = PTR_ERR(root);
 417                 goto err0;
 418         }
 419
 420         dwc->root = root;
 421
 422         file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
 423                         &dwc3_regdump_fops);
 424         if (IS_ERR(file)) {
 425                 ret = PTR_ERR(file);
 426                 goto err1;
 427         }
 428         return 0;
 429
 430 err1:
 431         debugfs_remove_recursive(root);
 432
 433 err0:
 434         return ret;
 435 }
 436
 437 void __devexit dwc3_debugfs_exit(struct dwc3 *dwc)
 438 {
 439         debugfs_remove_recursive(dwc->root);
 440         dwc->root = NULL;
 441 }