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 #define dump_register(nm) \ 55 { \ 56 .name = __stringify(nm), \ 57 .offset = DWC3_ ##nm, \ 58 } 59 60 static const struct debugfs_reg32 dwc3_regs[] = { 61 dump_register(GSBUSCFG0), 62 dump_register(GSBUSCFG1), 63 dump_register(GTXTHRCFG), 64 dump_register(GRXTHRCFG), 65 dump_register(GCTL), 66 dump_register(GEVTEN), 67 dump_register(GSTS), 68 dump_register(GSNPSID), 69 dump_register(GGPIO), 70 dump_register(GUID), 71 dump_register(GUCTL), 72 dump_register(GBUSERRADDR0), 73 dump_register(GBUSERRADDR1), 74 dump_register(GPRTBIMAP0), 75 dump_register(GPRTBIMAP1), 76 dump_register(GHWPARAMS0), 77 dump_register(GHWPARAMS1), 78 dump_register(GHWPARAMS2), 79 dump_register(GHWPARAMS3), 80 dump_register(GHWPARAMS4), 81 dump_register(GHWPARAMS5), 82 dump_register(GHWPARAMS6), 83 dump_register(GHWPARAMS7), 84 dump_register(GDBGFIFOSPACE), 85 dump_register(GDBGLTSSM), 86 dump_register(GPRTBIMAP_HS0), 87 dump_register(GPRTBIMAP_HS1), 88 dump_register(GPRTBIMAP_FS0), 89 dump_register(GPRTBIMAP_FS1), 90 91 dump_register(GUSB2PHYCFG(0)), 92 dump_register(GUSB2PHYCFG(1)), 93 dump_register(GUSB2PHYCFG(2)), 94 dump_register(GUSB2PHYCFG(3)), 95 dump_register(GUSB2PHYCFG(4)), 96 dump_register(GUSB2PHYCFG(5)), 97 dump_register(GUSB2PHYCFG(6)), 98 dump_register(GUSB2PHYCFG(7)), 99 dump_register(GUSB2PHYCFG(8)), 100 dump_register(GUSB2PHYCFG(9)), 101 dump_register(GUSB2PHYCFG(10)), 102 dump_register(GUSB2PHYCFG(11)), 103 dump_register(GUSB2PHYCFG(12)), 104 dump_register(GUSB2PHYCFG(13)), 105 dump_register(GUSB2PHYCFG(14)), 106 dump_register(GUSB2PHYCFG(15)), 107 108 dump_register(GUSB2I2CCTL(0)), 109 dump_register(GUSB2I2CCTL(1)), 110 dump_register(GUSB2I2CCTL(2)), 111 dump_register(GUSB2I2CCTL(3)), 112 dump_register(GUSB2I2CCTL(4)), 113 dump_register(GUSB2I2CCTL(5)), 114 dump_register(GUSB2I2CCTL(6)), 115 dump_register(GUSB2I2CCTL(7)), 116 dump_register(GUSB2I2CCTL(8)), 117 dump_register(GUSB2I2CCTL(9)), 118 dump_register(GUSB2I2CCTL(10)), 119 dump_register(GUSB2I2CCTL(11)), 120 dump_register(GUSB2I2CCTL(12)), 121 dump_register(GUSB2I2CCTL(13)), 122 dump_register(GUSB2I2CCTL(14)), 123 dump_register(GUSB2I2CCTL(15)), 124 125 dump_register(GUSB2PHYACC(0)), 126 dump_register(GUSB2PHYACC(1)), 127 dump_register(GUSB2PHYACC(2)), 128 dump_register(GUSB2PHYACC(3)), 129 dump_register(GUSB2PHYACC(4)), 130 dump_register(GUSB2PHYACC(5)), 131 dump_register(GUSB2PHYACC(6)), 132 dump_register(GUSB2PHYACC(7)), 133 dump_register(GUSB2PHYACC(8)), 134 dump_register(GUSB2PHYACC(9)), 135 dump_register(GUSB2PHYACC(10)), 136 dump_register(GUSB2PHYACC(11)), 137 dump_register(GUSB2PHYACC(12)), 138 dump_register(GUSB2PHYACC(13)), 139 dump_register(GUSB2PHYACC(14)), 140 dump_register(GUSB2PHYACC(15)), 141 142 dump_register(GUSB3PIPECTL(0)), 143 dump_register(GUSB3PIPECTL(1)), 144 dump_register(GUSB3PIPECTL(2)), 145 dump_register(GUSB3PIPECTL(3)), 146 dump_register(GUSB3PIPECTL(4)), 147 dump_register(GUSB3PIPECTL(5)), 148 dump_register(GUSB3PIPECTL(6)), 149 dump_register(GUSB3PIPECTL(7)), 150 dump_register(GUSB3PIPECTL(8)), 151 dump_register(GUSB3PIPECTL(9)), 152 dump_register(GUSB3PIPECTL(10)), 153 dump_register(GUSB3PIPECTL(11)), 154 dump_register(GUSB3PIPECTL(12)), 155 dump_register(GUSB3PIPECTL(13)), 156 dump_register(GUSB3PIPECTL(14)), 157 dump_register(GUSB3PIPECTL(15)), 158 159 dump_register(GTXFIFOSIZ(0)), 160 dump_register(GTXFIFOSIZ(1)), 161 dump_register(GTXFIFOSIZ(2)), 162 dump_register(GTXFIFOSIZ(3)), 163 dump_register(GTXFIFOSIZ(4)), 164 dump_register(GTXFIFOSIZ(5)), 165 dump_register(GTXFIFOSIZ(6)), 166 dump_register(GTXFIFOSIZ(7)), 167 dump_register(GTXFIFOSIZ(8)), 168 dump_register(GTXFIFOSIZ(9)), 169 dump_register(GTXFIFOSIZ(10)), 170 dump_register(GTXFIFOSIZ(11)), 171 dump_register(GTXFIFOSIZ(12)), 172 dump_register(GTXFIFOSIZ(13)), 173 dump_register(GTXFIFOSIZ(14)), 174 dump_register(GTXFIFOSIZ(15)), 175 dump_register(GTXFIFOSIZ(16)), 176 dump_register(GTXFIFOSIZ(17)), 177 dump_register(GTXFIFOSIZ(18)), 178 dump_register(GTXFIFOSIZ(19)), 179 dump_register(GTXFIFOSIZ(20)), 180 dump_register(GTXFIFOSIZ(21)), 181 dump_register(GTXFIFOSIZ(22)), 182 dump_register(GTXFIFOSIZ(23)), 183 dump_register(GTXFIFOSIZ(24)), 184 dump_register(GTXFIFOSIZ(25)), 185 dump_register(GTXFIFOSIZ(26)), 186 dump_register(GTXFIFOSIZ(27)), 187 dump_register(GTXFIFOSIZ(28)), 188 dump_register(GTXFIFOSIZ(29)), 189 dump_register(GTXFIFOSIZ(30)), 190 dump_register(GTXFIFOSIZ(31)), 191 192 dump_register(GRXFIFOSIZ(0)), 193 dump_register(GRXFIFOSIZ(1)), 194 dump_register(GRXFIFOSIZ(2)), 195 dump_register(GRXFIFOSIZ(3)), 196 dump_register(GRXFIFOSIZ(4)), 197 dump_register(GRXFIFOSIZ(5)), 198 dump_register(GRXFIFOSIZ(6)), 199 dump_register(GRXFIFOSIZ(7)), 200 dump_register(GRXFIFOSIZ(8)), 201 dump_register(GRXFIFOSIZ(9)), 202 dump_register(GRXFIFOSIZ(10)), 203 dump_register(GRXFIFOSIZ(11)), 204 dump_register(GRXFIFOSIZ(12)), 205 dump_register(GRXFIFOSIZ(13)), 206 dump_register(GRXFIFOSIZ(14)), 207 dump_register(GRXFIFOSIZ(15)), 208 dump_register(GRXFIFOSIZ(16)), 209 dump_register(GRXFIFOSIZ(17)), 210 dump_register(GRXFIFOSIZ(18)), 211 dump_register(GRXFIFOSIZ(19)), 212 dump_register(GRXFIFOSIZ(20)), 213 dump_register(GRXFIFOSIZ(21)), 214 dump_register(GRXFIFOSIZ(22)), 215 dump_register(GRXFIFOSIZ(23)), 216 dump_register(GRXFIFOSIZ(24)), 217 dump_register(GRXFIFOSIZ(25)), 218 dump_register(GRXFIFOSIZ(26)), 219 dump_register(GRXFIFOSIZ(27)), 220 dump_register(GRXFIFOSIZ(28)), 221 dump_register(GRXFIFOSIZ(29)), 222 dump_register(GRXFIFOSIZ(30)), 223 dump_register(GRXFIFOSIZ(31)), 224 225 dump_register(GEVNTADRLO(0)), 226 dump_register(GEVNTADRHI(0)), 227 dump_register(GEVNTSIZ(0)), 228 dump_register(GEVNTCOUNT(0)), 229 230 dump_register(GHWPARAMS8), 231 dump_register(DCFG), 232 dump_register(DCTL), 233 dump_register(DEVTEN), 234 dump_register(DSTS), 235 dump_register(DGCMDPAR), 236 dump_register(DGCMD), 237 dump_register(DALEPENA), 238 239 dump_register(DEPCMDPAR2(0)), 240 dump_register(DEPCMDPAR2(1)), 241 dump_register(DEPCMDPAR2(2)), 242 dump_register(DEPCMDPAR2(3)), 243 dump_register(DEPCMDPAR2(4)), 244 dump_register(DEPCMDPAR2(5)), 245 dump_register(DEPCMDPAR2(6)), 246 dump_register(DEPCMDPAR2(7)), 247 dump_register(DEPCMDPAR2(8)), 248 dump_register(DEPCMDPAR2(9)), 249 dump_register(DEPCMDPAR2(10)), 250 dump_register(DEPCMDPAR2(11)), 251 dump_register(DEPCMDPAR2(12)), 252 dump_register(DEPCMDPAR2(13)), 253 dump_register(DEPCMDPAR2(14)), 254 dump_register(DEPCMDPAR2(15)), 255 dump_register(DEPCMDPAR2(16)), 256 dump_register(DEPCMDPAR2(17)), 257 dump_register(DEPCMDPAR2(18)), 258 dump_register(DEPCMDPAR2(19)), 259 dump_register(DEPCMDPAR2(20)), 260 dump_register(DEPCMDPAR2(21)), 261 dump_register(DEPCMDPAR2(22)), 262 dump_register(DEPCMDPAR2(23)), 263 dump_register(DEPCMDPAR2(24)), 264 dump_register(DEPCMDPAR2(25)), 265 dump_register(DEPCMDPAR2(26)), 266 dump_register(DEPCMDPAR2(27)), 267 dump_register(DEPCMDPAR2(28)), 268 dump_register(DEPCMDPAR2(29)), 269 dump_register(DEPCMDPAR2(30)), 270 dump_register(DEPCMDPAR2(31)), 271 272 dump_register(DEPCMDPAR1(0)), 273 dump_register(DEPCMDPAR1(1)), 274 dump_register(DEPCMDPAR1(2)), 275 dump_register(DEPCMDPAR1(3)), 276 dump_register(DEPCMDPAR1(4)), 277 dump_register(DEPCMDPAR1(5)), 278 dump_register(DEPCMDPAR1(6)), 279 dump_register(DEPCMDPAR1(7)), 280 dump_register(DEPCMDPAR1(8)), 281 dump_register(DEPCMDPAR1(9)), 282 dump_register(DEPCMDPAR1(10)), 283 dump_register(DEPCMDPAR1(11)), 284 dump_register(DEPCMDPAR1(12)), 285 dump_register(DEPCMDPAR1(13)), 286 dump_register(DEPCMDPAR1(14)), 287 dump_register(DEPCMDPAR1(15)), 288 dump_register(DEPCMDPAR1(16)), 289 dump_register(DEPCMDPAR1(17)), 290 dump_register(DEPCMDPAR1(18)), 291 dump_register(DEPCMDPAR1(19)), 292 dump_register(DEPCMDPAR1(20)), 293 dump_register(DEPCMDPAR1(21)), 294 dump_register(DEPCMDPAR1(22)), 295 dump_register(DEPCMDPAR1(23)), 296 dump_register(DEPCMDPAR1(24)), 297 dump_register(DEPCMDPAR1(25)), 298 dump_register(DEPCMDPAR1(26)), 299 dump_register(DEPCMDPAR1(27)), 300 dump_register(DEPCMDPAR1(28)), 301 dump_register(DEPCMDPAR1(29)), 302 dump_register(DEPCMDPAR1(30)), 303 dump_register(DEPCMDPAR1(31)), 304 305 dump_register(DEPCMDPAR0(0)), 306 dump_register(DEPCMDPAR0(1)), 307 dump_register(DEPCMDPAR0(2)), 308 dump_register(DEPCMDPAR0(3)), 309 dump_register(DEPCMDPAR0(4)), 310 dump_register(DEPCMDPAR0(5)), 311 dump_register(DEPCMDPAR0(6)), 312 dump_register(DEPCMDPAR0(7)), 313 dump_register(DEPCMDPAR0(8)), 314 dump_register(DEPCMDPAR0(9)), 315 dump_register(DEPCMDPAR0(10)), 316 dump_register(DEPCMDPAR0(11)), 317 dump_register(DEPCMDPAR0(12)), 318 dump_register(DEPCMDPAR0(13)), 319 dump_register(DEPCMDPAR0(14)), 320 dump_register(DEPCMDPAR0(15)), 321 dump_register(DEPCMDPAR0(16)), 322 dump_register(DEPCMDPAR0(17)), 323 dump_register(DEPCMDPAR0(18)), 324 dump_register(DEPCMDPAR0(19)), 325 dump_register(DEPCMDPAR0(20)), 326 dump_register(DEPCMDPAR0(21)), 327 dump_register(DEPCMDPAR0(22)), 328 dump_register(DEPCMDPAR0(23)), 329 dump_register(DEPCMDPAR0(24)), 330 dump_register(DEPCMDPAR0(25)), 331 dump_register(DEPCMDPAR0(26)), 332 dump_register(DEPCMDPAR0(27)), 333 dump_register(DEPCMDPAR0(28)), 334 dump_register(DEPCMDPAR0(29)), 335 dump_register(DEPCMDPAR0(30)), 336 dump_register(DEPCMDPAR0(31)), 337 338 dump_register(DEPCMD(0)), 339 dump_register(DEPCMD(1)), 340 dump_register(DEPCMD(2)), 341 dump_register(DEPCMD(3)), 342 dump_register(DEPCMD(4)), 343 dump_register(DEPCMD(5)), 344 dump_register(DEPCMD(6)), 345 dump_register(DEPCMD(7)), 346 dump_register(DEPCMD(8)), 347 dump_register(DEPCMD(9)), 348 dump_register(DEPCMD(10)), 349 dump_register(DEPCMD(11)), 350 dump_register(DEPCMD(12)), 351 dump_register(DEPCMD(13)), 352 dump_register(DEPCMD(14)), 353 dump_register(DEPCMD(15)), 354 dump_register(DEPCMD(16)), 355 dump_register(DEPCMD(17)), 356 dump_register(DEPCMD(18)), 357 dump_register(DEPCMD(19)), 358 dump_register(DEPCMD(20)), 359 dump_register(DEPCMD(21)), 360 dump_register(DEPCMD(22)), 361 dump_register(DEPCMD(23)), 362 dump_register(DEPCMD(24)), 363 dump_register(DEPCMD(25)), 364 dump_register(DEPCMD(26)), 365 dump_register(DEPCMD(27)), 366 dump_register(DEPCMD(28)), 367 dump_register(DEPCMD(29)), 368 dump_register(DEPCMD(30)), 369 dump_register(DEPCMD(31)), 370 371 dump_register(OCFG), 372 dump_register(OCTL), 373 dump_register(OEVTEN), 374 dump_register(OSTS), 375 }; 376 377 static int dwc3_regdump_show(struct seq_file *s, void *unused) 378 { 379 struct dwc3 *dwc = s->private; 380 381 seq_printf(s, "DesignWare USB3 Core Register Dump\n"); 382 debugfs_print_regs32(s, dwc3_regs, ARRAY_SIZE(dwc3_regs), 383 dwc->regs, ""); 384 return 0; 385 } 386 387 static int dwc3_regdump_open(struct inode *inode, struct file *file) 388 { 389 return single_open(file, dwc3_regdump_show, inode->i_private); 390 } 391 392 static const struct file_operations dwc3_regdump_fops = { 393 .open = dwc3_regdump_open, 394 .read = seq_read, 395 .release = single_release, 396 }; 397 398 int __devinit dwc3_debugfs_init(struct dwc3 *dwc) 399 { 400 struct dentry *root; 401 struct dentry *file; 402 int ret; 403 404 root = debugfs_create_dir(dev_name(dwc->dev), NULL); 405 if (IS_ERR(root)){ 406 ret = PTR_ERR(root); 407 goto err0; 408 } 409 410 dwc->root = root; 411 412 file = debugfs_create_file("regdump", S_IRUGO, root, dwc, 413 &dwc3_regdump_fops); 414 if (IS_ERR(file)) { 415 ret = PTR_ERR(file); 416 goto err1; 417 } 418 return 0; 419 420 err1: 421 debugfs_remove_recursive(root); 422 423 err0: 424 return ret; 425 } 426 427 void __devexit dwc3_debugfs_exit(struct dwc3 *dwc) 428 { 429 debugfs_remove_recursive(dwc->root); 430 dwc->root = NULL; 431 } 432