package/broadcom-diag/src/diag.c

   1 /*
   2  * diag.c - GPIO interface driver for Broadcom boards
   3  *
   4  * Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
   5  *                    Felix Fietkau <nbd@openwrt.org>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * $Id$
  22  */
  23 #include <linux/module.h>
  24 #include <linux/pci.h>
  25 #include <linux/kmod.h>
  26 #include <linux/proc_fs.h>
  27 #include <linux/timer.h>
  28 #include <linux/version.h>
  29 #include <asm/uaccess.h>
  30
  31 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
  32 #include <linux/kobject.h>
  33 #include <linux/workqueue.h>
  34 #define hotplug_path uevent_helper
  35 #else
  36 #include <linux/tqueue.h>
  37 #define INIT_WORK INIT_TQUEUE
  38 #define schedule_work schedule_task
  39 #define work_struct tq_struct
  40 #endif
  41
  42 #include "gpio.h"
  43 #include "diag.h"
  44 #define getvar(str) (nvram_get(str)?:"")
  45
  46 static unsigned int gpiomask = 0;
  47 module_param(gpiomask, int, 0644);
  48
  49 enum {
  50         /* Linksys */
  51         WAP54GV1,
  52         WAP54GV3,
  53         WRT54GV1,
  54         WRT54G,
  55         WRTSL54GS,
  56         WRT54G3G,
  57         WRT350N,
  58
  59         /* ASUS */
  60         WLHDD,
  61         WL300G,
  62         WL500G,
  63         WL500GD,
  64         WL500GP,
  65         ASUS_4702,
  66
  67         /* Buffalo */
  68         WBR2_G54,
  69         WHR_G54S,
  70         WHR_HP_G54,
  71         WHR2_A54G54,
  72         WLA2_G54L,
  73         WZR_RS_G54,
  74         WZR_RS_G54HP,
  75         BUFFALO_UNKNOWN,
  76         BUFFALO_UNKNOWN_4710,
  77
  78         /* Siemens */
  79         SE505V1,
  80         SE505V2,
  81
  82         /* US Robotics */
  83         USR5461,
  84
  85         /* Dell */
  86         TM2300,
  87
  88         /* Motorola */
  89         WE800G,
  90         WR850GV1,
  91         WR850GV2V3,
  92
  93         /* Belkin */
  94         BELKIN_UNKNOWN,
  95
  96         /* Netgear */
  97         WGT634U,
  98
  99         /* Trendware */
 100         TEW411BRPP,
 101 };
 102
 103 static struct platform_t __initdata platforms[] = {
 104         /* Linksys */
 105         [WAP54GV1] = {
 106                 .name           = "Linksys WAP54G V1",
 107                 .buttons        = {
 108                         { .name = "reset",      .gpio = 1 << 0 },
 109                 },
 110                 .leds           = {
 111                         { .name = "diag",       .gpio = 1 << 3 },
 112                         { .name = "wlan",       .gpio = 1 << 4 },
 113                 },
 114         },
 115         [WAP54GV3] = {
 116                 .name           = "Linksys WAP54G V3",
 117                 .buttons        = {
 118                         /* FIXME: verify this */
 119                         { .name = "reset",      .gpio = 1 << 7 },
 120                         { .name = "ses",        .gpio = 1 << 0 },
 121                 },
 122                 .leds           = {
 123                         /* FIXME: diag? */
 124                         { .name = "ses",        .gpio = 1 << 1 },
 125                 },
 126         },
 127         [WRT54GV1] = {
 128                 .name           = "Linksys WRT54G V1.x",
 129                 .buttons        = {
 130                         { .name = "reset",      .gpio = 1 << 6 },
 131                 },
 132                 .leds           = {
 133                         { .name = "diag",       .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 134                         { .name = "dmz",        .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 135                 },
 136         },
 137         [WRT54G] = {
 138                 .name           = "Linksys WRT54G/GS/GL",
 139                 .buttons        = {
 140                         { .name = "reset",      .gpio = 1 << 6 },
 141                         { .name = "ses",        .gpio = 1 << 4 },
 142                 },
 143                 .leds           = {
 144                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 145                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 146                         { .name = "ses_white",  .gpio = 1 << 2, .polarity = REVERSE },
 147                         { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
 148                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 149                 },
 150         },
 151         [WRTSL54GS] = {
 152                 .name           = "Linksys WRTSL54GS",
 153                 .buttons        = {
 154                         { .name = "reset",      .gpio = 1 << 6 },
 155                         { .name = "ses",        .gpio = 1 << 4 },
 156                 },
 157                 .leds           = {
 158                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 159                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 160                         { .name = "ses_white",  .gpio = 1 << 5, .polarity = REVERSE },
 161                         { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
 162                 },
 163         },
 164         [WRT54G3G] = {
 165                 .name           = "Linksys WRT54G3G",
 166                 .buttons        = {
 167                         { .name = "reset",      .gpio = 1 << 6 },
 168                         { .name = "3g",         .gpio = 1 << 4 },
 169                 },
 170                 .leds           = {
 171                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 172                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 173                         { .name = "3g_green",   .gpio = 1 << 2, .polarity = NORMAL },
 174                         { .name = "3g_blue",    .gpio = 1 << 3, .polarity = NORMAL },
 175                         { .name = "3g_blink",   .gpio = 1 << 5, .polarity = NORMAL },
 176                 },
 177         },
 178         [WRT350N] = {
 179                 .name           = "Linksys WRT350N",
 180                 .buttons        = {
 181                         { .name = "reset",      .gpio = 1 << 6 },
 182                         { .name = "ses",        .gpio = 1 << 8 },
 183                 },
 184                 .leds           = {
 185                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 186                         { .name = "ses",        .gpio = 1 << 3, .polarity = REVERSE },
 187                 },
 188         },
 189         /* Asus */
 190         [WLHDD] = {
 191                 .name           = "ASUS WL-HDD",
 192                 .buttons        = {
 193                         { .name = "reset",      .gpio = 1 << 6 },
 194                 },
 195                 .leds           = {
 196                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 197                 },
 198         },
 199         [WL300G] = {
 200                 .name           = "ASUS WL-300g",
 201                 .buttons        = {
 202                         { .name = "reset",      .gpio = 1 << 6 },
 203                 },
 204                 .leds           = {
 205                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 206                 },
 207         },
 208         [WL500G] = {
 209                 .name           = "ASUS WL-500g",
 210                 .buttons        = {
 211                         { .name = "reset",      .gpio = 1 << 6 },
 212                 },
 213                 .leds           = {
 214                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 215                 },
 216         },
 217         [WL500GD] = {
 218                 .name           = "ASUS WL-500g Deluxe",
 219                 .buttons        = {
 220                         { .name = "reset",      .gpio = 1 << 6 },
 221                 },
 222                 .leds           = {
 223                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 224                 },
 225         },
 226         [WL500GP] = {
 227                 .name           = "ASUS WL-500g Premium",
 228                 .buttons        = {
 229                         { .name = "reset",      .gpio = 1 << 0 },
 230                         { .name = "ses",        .gpio = 1 << 4 },
 231                 },
 232                 .leds           = {
 233                         { .name = "power",      .gpio = 1 << 1, .polarity = REVERSE },
 234                 },
 235         },
 236         [ASUS_4702] = {
 237                 .name           = "ASUS (unknown, BCM4702)",
 238                 .buttons        = {
 239                         { .name = "reset",      .gpio = 1 << 6 },
 240                 },
 241                 .leds           = {
 242                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 243                 },
 244         },
 245         /* Buffalo */
 246         [WHR_G54S] = {
 247                 .name           = "Buffalo WHR-G54S",
 248                 .buttons        = {
 249                         { .name = "reset",      .gpio = 1 << 4 },
 250                         { .name = "bridge",     .gpio = 1 << 5 },
 251                         { .name = "ses",        .gpio = 1 << 0 },
 252                 },
 253                 .leds           = {
 254                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 255                         { .name = "internal",   .gpio = 1 << 3, .polarity = REVERSE },
 256                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 257                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 258                 },
 259         },
 260         [WBR2_G54] = {
 261                 .name           = "Buffalo WBR2-G54",
 262                 /* FIXME: verify */
 263                 .buttons        = {
 264                         { .name = "reset",      .gpio = 1 << 7 },
 265                 },
 266                 .leds           = {
 267                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 268                 },
 269         },
 270         [WHR_HP_G54] = {
 271                 .name           = "Buffalo WHR-HP-G54",
 272                 .buttons        = {
 273                         { .name = "reset",      .gpio = 1 << 4 },
 274                         { .name = "bridge",     .gpio = 1 << 5 },
 275                         { .name = "ses",        .gpio = 1 << 0 },
 276                 },
 277                 .leds           = {
 278                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 279                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 280                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 281                 },
 282         },
 283         [WHR2_A54G54] = {
 284                 .name           = "Buffalo WHR2-A54G54",
 285                 .buttons        = {
 286                         { .name = "reset",      .gpio = 1 << 4 },
 287                 },
 288                 .leds           = {
 289                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 290                 },
 291         },
 292         [WLA2_G54L] = {
 293                 .name           = "Buffalo WLA2-G54L",
 294                 /* FIXME: verify */
 295                 .buttons        = {
 296                         { .name = "reset",      .gpio = 1 << 7 },
 297                 },
 298                 .leds           = {
 299                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 300                 },
 301         },
 302         [WZR_RS_G54] = {
 303                 .name           = "Buffalo WZR-RS-G54",
 304                 .buttons        = {
 305                         { .name = "ses",        .gpio = 1 << 0 },
 306                         { .name = "reset",      .gpio = 1 << 4 },
 307                 },
 308                 .leds           = {
 309                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 310                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 311                         { .name = "vpn",        .gpio = 1 << 1, .polarity = REVERSE },
 312                 },
 313         },
 314         [WZR_RS_G54HP] = {
 315                 .name           = "Buffalo WZR-RS-G54HP",
 316                 .buttons        = {
 317                         { .name = "ses",        .gpio = 1 << 0 },
 318                         { .name = "reset",      .gpio = 1 << 4 },
 319                 },
 320                 .leds           = {
 321                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 322                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 323                         { .name = "vpn",        .gpio = 1 << 1, .polarity = REVERSE },
 324                 },
 325         },
 326         [BUFFALO_UNKNOWN] = {
 327                 .name           = "Buffalo (unknown)",
 328                 .buttons        = {
 329                         { .name = "reset",      .gpio = 1 << 7 },
 330                 },
 331                 .leds           = {
 332                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 333                 },
 334         },
 335         [BUFFALO_UNKNOWN_4710] = {
 336                 .name           = "Buffalo (unknown, BCM4710)",
 337                 .buttons        = {
 338                         { .name = "reset",      .gpio = 1 << 4 },
 339                 },
 340                 .leds           = {
 341                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 342                 },
 343         },
 344         /* Siemens */
 345         [SE505V1] = {
 346                 .name           = "Siemens SE505 V1",
 347                 .buttons        = {
 348                         /* No usable buttons */
 349                 },
 350                 .leds           = {
 351                         { .name = "dmz",        .gpio = 1 << 4, .polarity = REVERSE },
 352                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 353                 },
 354         },
 355         [SE505V2] = {
 356                 .name           = "Siemens SE505 V2",
 357                 .buttons        = {
 358                         /* No usable buttons */
 359                 },
 360                 .leds           = {
 361                         { .name = "power",      .gpio = 1 << 5, .polarity = REVERSE },
 362                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 363                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 364                 },
 365         },
 366         /* US Robotics */
 367         [USR5461] = {
 368                 .name           = "U.S. Robotics USR5461",
 369                 .buttons        = {
 370                         /* No usable buttons */
 371                 },
 372                 .leds           = {
 373                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 374                         { .name = "printer",    .gpio = 1 << 1, .polarity = REVERSE },
 375                 },
 376         },
 377         /* Dell */
 378         [TM2300] = {
 379                 .name           = "Dell TrueMobile 2300",
 380                 .buttons        = {
 381                         { .name = "reset",      .gpio = 1 << 0 },
 382                 },
 383                 .leds           = {
 384                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 385                 },
 386         },
 387         /* Motorola */
 388         [WE800G] = {
 389                 .name           = "Motorola WE800G",
 390                 .buttons        = {
 391                         { .name = "reset",      .gpio = 1 << 0 },
 392                 },
 393                 .leds           = {
 394                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 395                         { .name = "diag",       .gpio = 1 << 2, .polarity = REVERSE },
 396                         { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
 397                 },
 398         },
 399         [WR850GV1] = {
 400                 .name           = "Motorola WR850G V1",
 401                 .buttons        = {
 402                         { .name = "reset",      .gpio = 1 << 0 },
 403                 },
 404                 .leds           = {
 405                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 406                         { .name = "diag",       .gpio = 1 << 3, .polarity = REVERSE },
 407                         { .name = "dmz",        .gpio = 1 << 6, .polarity = NORMAL },
 408                         { .name = "wlan_red",   .gpio = 1 << 5, .polarity = REVERSE },
 409                         { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
 410                 },
 411         },
 412         [WR850GV2V3] = {
 413                 .name           = "Motorola WR850G V2/V3",
 414                 .buttons        = {
 415                         { .name = "reset",      .gpio = 1 << 5 },
 416                 },
 417                 .leds           = {
 418                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 419                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 420                         { .name = "dmz",        .gpio = 1 << 6, .polarity = REVERSE },
 421                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 422                 },
 423         },
 424         /* Belkin */
 425         [BELKIN_UNKNOWN] = {
 426                 .name           = "Belkin (unknown)",
 427                 /* FIXME: verify & add detection */
 428                 .buttons        = {
 429                         { .name = "reset",      .gpio = 1 << 7 },
 430                 },
 431                 .leds           = {
 432                         { .name = "power",      .gpio = 1 << 5, .polarity = NORMAL },
 433                         { .name = "wlan",       .gpio = 1 << 3, .polarity = NORMAL },
 434                         { .name = "connected",  .gpio = 1 << 0, .polarity = NORMAL },
 435                 },
 436         },
 437         /* Netgear */
 438         [WGT634U] = {
 439                 .name           = "Netgear WGT634U",
 440                 .buttons        = {
 441                         { .name = "reset",      .gpio = 1 << 2 },
 442                 },
 443                 .leds           = {
 444                         { .name = "power",      .gpio = 1 << 3, .polarity = REVERSE },
 445                 },
 446         },
 447         /* Trendware */
 448         [TEW411BRPP] = {
 449                 .name           = "Trendware TEW411BRP+",
 450                 .buttons        = {
 451                         { /* No usable buttons */ },
 452                 },
 453                 .leds           = {
 454                         { .name = "power",      .gpio = 1 << 7, .polarity = NORMAL },
 455                         { .name = "wlan",       .gpio = 1 << 1, .polarity = NORMAL },
 456                         { .name = "bridge",     .gpio = 1 << 6, .polarity = NORMAL },
 457                 },
 458         },
 459 };
 460
 461 static struct platform_t __init *platform_detect(void)
 462 {
 463         char *boardnum, *boardtype, *buf;
 464
 465         boardnum = getvar("boardnum");
 466         boardtype = getvar("boardtype");
 467         if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
 468                 /* CFE based - newer hardware */
 469                 if (!strcmp(boardnum, "42")) { /* Linksys */
 470                         if (!strcmp(boardtype, "0x478") && !strcmp(getvar("cardbus"), 1))
 471                                 return &platforms[WRT350N];
 472
 473                         if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
 474                                 return &platforms[WRT54G3G];
 475
 476                         if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
 477                                 return &platforms[WRTSL54GS];
 478
 479                         /* default to WRT54G */
 480                         return &platforms[WRT54G];
 481                 }
 482
 483                 if (!strcmp(boardnum, "45")) { /* ASUS */
 484                         if (!strcmp(boardtype,"0x042f"))
 485                                 return &platforms[WL500GP];
 486                         else
 487                                 return &platforms[WL500GD];
 488                 }
 489
 490                 if (!strcmp(boardnum, "10496"))
 491                         return &platforms[USR5461];
 492         } else { /* PMON based - old stuff */
 493                 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
 494                         (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
 495                         if (!strncmp(getvar("ModelId"),"WE800G", 6))
 496                                 return &platforms[WE800G];
 497                         else
 498                                 return &platforms[WR850GV1];
 499                 }
 500                 if (!strncmp(boardtype, "bcm94710dev", 11)) {
 501                         if (!strcmp(boardnum, "42"))
 502                                 return &platforms[WRT54GV1];
 503                         if (simple_strtoul(boardnum, NULL, 0) == 2)
 504                                 return &platforms[WAP54GV1];
 505                 }
 506                 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
 507                         return &platforms[WL500G];
 508                 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
 509                         /* Either WL-300g or WL-HDD, do more extensive checks */
 510                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 511                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
 512                                 return &platforms[WLHDD];
 513                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 514                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
 515                                 return &platforms[WL300G];
 516                 }
 517
 518                 /* unknown asus stuff, probably bcm4702 */
 519                 if (!strncmp(boardnum, "asusX", 5))
 520                         return &platforms[ASUS_4702];
 521         }
 522
 523         if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
 524                 /* Buffalo hardware, check id for specific hardware matches */
 525                 if (!strcmp(buf, "29bb0332"))
 526                         return &platforms[WBR2_G54];
 527                 if (!strcmp(buf, "29129"))
 528                         return &platforms[WLA2_G54L];
 529                 if (!strcmp(buf, "30189"))
 530                         return &platforms[WHR_HP_G54];
 531                 if (!strcmp(buf, "30182"))
 532                         return &platforms[WHR_G54S];
 533                 if (!strcmp(buf, "290441dd"))
 534                         return &platforms[WHR2_A54G54];
 535                 if (!strcmp(buf, "30083"))
 536                         return &platforms[WZR_RS_G54];
 537                 if (!strcmp(buf, "30103"))
 538                         return &platforms[WZR_RS_G54HP];
 539         }
 540
 541         if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
 542                 if (!strncmp(boardtype, "bcm94710ap", 10))
 543                         return &platforms[BUFFALO_UNKNOWN_4710];
 544                 else
 545                         return &platforms[BUFFALO_UNKNOWN];
 546         }
 547
 548         if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
 549                 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
 550
 551                 return &platforms[WR850GV2V3];
 552         }
 553
 554         if (!strcmp(boardnum, "44")) {  /* Trendware TEW-411BRP+ */
 555                 return &platforms[TEW411BRPP];
 556         }
 557
 558         /* not found */
 559         return NULL;
 560 }
 561
 562 static void register_buttons(struct button_t *b)
 563 {
 564         for (; b->name; b++)
 565                 platform.button_mask |= b->gpio;
 566
 567         platform.button_mask &= ~gpiomask;
 568
 569         gpio_outen(platform.button_mask, 0);
 570         gpio_control(platform.button_mask, 0);
 571         platform.button_polarity = gpio_in() & platform.button_mask;
 572         gpio_intpolarity(platform.button_mask, platform.button_polarity);
 573         gpio_intmask(platform.button_mask, platform.button_mask);
 574
 575         gpio_set_irqenable(1, button_handler);
 576 }
 577
 578 static void unregister_buttons(struct button_t *b)
 579 {
 580         gpio_intmask(platform.button_mask, 0);
 581
 582         gpio_set_irqenable(0, button_handler);
 583 }
 584
 585 static void hotplug_button(struct event_t *event)
 586 {
 587 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
 588         call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
 589 #else
 590         call_usermodehelper (event->argv[0], event->argv, event->envp);
 591 #endif
 592         kfree(event);
 593 }
 594
 595 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
 596 {
 597         struct button_t *b;
 598         u32 in, changed;
 599
 600         in = gpio_in() & platform.button_mask;
 601         gpio_intpolarity(platform.button_mask, in);
 602         changed = platform.button_polarity ^ in;
 603         platform.button_polarity = in;
 604
 605         changed &= ~gpio_outen(0, 0);
 606
 607         for (b = platform.buttons; b->name; b++) {
 608                 struct event_t *event;
 609
 610                 if (!(b->gpio & changed)) continue;
 611
 612                 b->pressed ^= 1;
 613
 614                 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
 615                         int i;
 616                         char *scratch = event->buf;
 617
 618                         i = 0;
 619                         event->argv[i++] = hotplug_path;
 620                         event->argv[i++] = "button";
 621                         event->argv[i] = 0;
 622
 623                         i = 0;
 624                         event->envp[i++] = "HOME=/";
 625                         event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 626                         event->envp[i++] = scratch;
 627                         scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
 628                         event->envp[i++] = scratch;
 629                         scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
 630                         event->envp[i++] = scratch;
 631                         scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
 632                         event->envp[i] = 0;
 633
 634                         INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
 635                         schedule_work(&event->wq);
 636                 }
 637
 638                 b->seen = jiffies;
 639         }
 640         return IRQ_HANDLED;
 641 }
 642
 643 static void register_leds(struct led_t *l)
 644 {
 645         struct proc_dir_entry *p;
 646         u32 mask = 0;
 647         u32 val = 0;
 648
 649         leds = proc_mkdir("led", diag);
 650         if (!leds)
 651                 return;
 652
 653         for(; l->name; l++) {
 654                 if (l->gpio & gpiomask)
 655                         continue;
 656
 657                 if (l->gpio & GPIO_TYPE_EXTIF) {
 658                         l->state = 0;
 659                         set_led_extif(l);
 660                 } else {
 661                         mask |= l->gpio;
 662                         val |= (l->polarity == NORMAL)?0:l->gpio;
 663                 }
 664
 665                 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
 666                         l->proc.type = PROC_LED;
 667                         l->proc.ptr = l;
 668                         p->data = (void *) &l->proc;
 669                         p->proc_fops = &diag_proc_fops;
 670                 }
 671         }
 672
 673         gpio_outen(mask, mask);
 674         gpio_control(mask, 0);
 675         gpio_out(mask, val);
 676 }
 677
 678 static void unregister_leds(struct led_t *l)
 679 {
 680         for(; l->name; l++)
 681                 remove_proc_entry(l->name, leds);
 682
 683         remove_proc_entry("led", diag);
 684 }
 685
 686 static void set_led_extif(struct led_t *led)
 687 {
 688         gpio_set_extif(led->gpio, led->state);
 689 }
 690
 691 static void led_flash(unsigned long dummy) {
 692         struct led_t *l;
 693         u32 mask = 0;
 694         u8 extif_blink = 0;
 695
 696         for (l = platform.leds; l->name; l++) {
 697                 if (l->flash) {
 698                         if (l->gpio & GPIO_TYPE_EXTIF) {
 699                                 extif_blink = 1;
 700                                 l->state = !l->state;
 701                                 set_led_extif(l);
 702                         } else {
 703                                 mask |= l->gpio;
 704                         }
 705                 }
 706         }
 707
 708         mask &= ~gpiomask;
 709         if (mask) {
 710                 u32 val = ~gpio_in();
 711
 712                 gpio_outen(mask, mask);
 713                 gpio_control(mask, 0);
 714                 gpio_out(mask, val);
 715         }
 716         if (mask || extif_blink) {
 717                 mod_timer(&led_timer, jiffies + FLASH_TIME);
 718         }
 719 }
 720
 721 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 722 {
 723 #ifdef LINUX_2_4
 724         struct inode *inode = file->f_dentry->d_inode;
 725         struct proc_dir_entry *dent = inode->u.generic_ip;
 726 #else
 727         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 728 #endif
 729         char *page;
 730         int len = 0;
 731
 732         if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
 733                 return -ENOBUFS;
 734
 735         if (dent->data != NULL) {
 736                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 737                 switch (handler->type) {
 738                         case PROC_LED: {
 739                                 struct led_t * led = (struct led_t *) handler->ptr;
 740                                 if (led->flash) {
 741                                         len = sprintf(page, "f\n");
 742                                 } else {
 743                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 744                                                 len = sprintf(page, "%d\n", led->state);
 745                                         } else {
 746                                                 u32 in = (gpio_in() & led->gpio ? 1 : 0);
 747                                                 u8 p = (led->polarity == NORMAL ? 0 : 1);
 748                                                 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
 749                                         }
 750                                 }
 751                                 break;
 752                         }
 753                         case PROC_MODEL:
 754                                 len = sprintf(page, "%s\n", platform.name);
 755                                 break;
 756                         case PROC_GPIOMASK:
 757                                 len = sprintf(page, "0x%04x\n", gpiomask);
 758                                 break;
 759                 }
 760         }
 761         len += 1;
 762
 763         if (*ppos < len) {
 764                 len = min_t(int, len - *ppos, count);
 765                 if (copy_to_user(buf, (page + *ppos), len)) {
 766                         kfree(page);
 767                         return -EFAULT;
 768                 }
 769                 *ppos += len;
 770         } else {
 771                 len = 0;
 772         }
 773
 774         return len;
 775 }
 776
 777
 778 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 779 {
 780 #ifdef LINUX_2_4
 781         struct inode *inode = file->f_dentry->d_inode;
 782         struct proc_dir_entry *dent = inode->u.generic_ip;
 783 #else
 784         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 785 #endif
 786         char *page;
 787         int ret = -EINVAL;
 788
 789         if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
 790                 return -ENOBUFS;
 791
 792         if (copy_from_user(page, buf, count)) {
 793                 kfree(page);
 794                 return -EINVAL;
 795         }
 796         page[count] = 0;
 797
 798         if (dent->data != NULL) {
 799                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 800                 switch (handler->type) {
 801                         case PROC_LED: {
 802                                 struct led_t *led = (struct led_t *) handler->ptr;
 803                                 int p = (led->polarity == NORMAL ? 0 : 1);
 804
 805                                 if (page[0] == 'f') {
 806                                         led->flash = 1;
 807                                         led_flash(0);
 808                                 } else {
 809                                         led->flash = 0;
 810                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 811                                                 led->state = p ^ ((page[0] == '1') ? 1 : 0);
 812                                                 set_led_extif(led);
 813                                         } else {
 814                                                 gpio_outen(led->gpio, led->gpio);
 815                                                 gpio_control(led->gpio, 0);
 816                                                 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
 817                                         }
 818                                 }
 819                                 break;
 820                         }
 821                         case PROC_GPIOMASK:
 822                                 gpiomask = simple_strtoul(page, NULL, 0);
 823
 824                                 if (platform.buttons) {
 825                                         unregister_buttons(platform.buttons);
 826                                         register_buttons(platform.buttons);
 827                                 }
 828
 829                                 if (platform.leds) {
 830                                         unregister_leds(platform.leds);
 831                                         register_leds(platform.leds);
 832                                 }
 833                                 break;
 834                 }
 835                 ret = count;
 836         }
 837
 838         kfree(page);
 839         return ret;
 840 }
 841
 842 static int __init diag_init(void)
 843 {
 844         static struct proc_dir_entry *p;
 845         static struct platform_t *detected;
 846
 847         detected = platform_detect();
 848         if (!detected) {
 849                 printk(MODULE_NAME ": Router model not detected.\n");
 850                 return -ENODEV;
 851         }
 852         memcpy(&platform, detected, sizeof(struct platform_t));
 853
 854         printk(MODULE_NAME ": Detected '%s'\n", platform.name);
 855
 856         if (!(diag = proc_mkdir("diag", NULL))) {
 857                 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
 858                 return -EINVAL;
 859         }
 860
 861         if ((p = create_proc_entry("model", S_IRUSR, diag))) {
 862                 p->data = (void *) &proc_model;
 863                 p->proc_fops = &diag_proc_fops;
 864         }
 865
 866         if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
 867                 p->data = (void *) &proc_gpiomask;
 868                 p->proc_fops = &diag_proc_fops;
 869         }
 870
 871         if (platform.buttons)
 872                 register_buttons(platform.buttons);
 873
 874         if (platform.leds)
 875                 register_leds(platform.leds);
 876
 877         return 0;
 878 }
 879
 880 static void __exit diag_exit(void)
 881 {
 882
 883         del_timer(&led_timer);
 884
 885         if (platform.buttons)
 886                 unregister_buttons(platform.buttons);
 887
 888         if (platform.leds)
 889                 unregister_leds(platform.leds);
 890
 891         remove_proc_entry("model", diag);
 892         remove_proc_entry("gpiomask", diag);
 893         remove_proc_entry("diag", NULL);
 894 }
 895
 896 module_init(diag_init);
 897 module_exit(diag_exit);
 898
 899 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
 900 MODULE_LICENSE("GPL");