drivers/staging/brcm80211/brcmfmac/dhd_linux.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifdef CONFIG_WIFI_CONTROL_FUNC
  18 #include <linux/platform_device.h>
  19 #endif
  20 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <linux/kthread.h>
  23 #include <linux/slab.h>
  24 #include <linux/skbuff.h>
  25 #include <linux/netdevice.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/mmc/sdio_func.h>
  28 #include <linux/random.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/fcntl.h>
  32 #include <linux/fs.h>
  33 #include <linux/uaccess.h>
  34 #include <bcmdefs.h>
  35 #include <osl.h>
  36 #include <bcmutils.h>
  37 #include <bcmendian.h>
  38
  39 #include <dngl_stats.h>
  40 #include <dhd.h>
  41 #include <dhd_bus.h>
  42 #include <dhd_proto.h>
  43 #include <dhd_dbg.h>
  44
  45 #include <wl_cfg80211.h>
  46
  47 #define EPI_VERSION_STR         "4.218.248.5"
  48 #define ETH_P_BRCM                      0x886c
  49
  50 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
  51 #include <linux/wifi_tiwlan.h>
  52
  53 struct semaphore wifi_control_sem;
  54
  55 struct dhd_bus *g_bus;
  56
  57 static struct wifi_platform_data *wifi_control_data;
  58 static struct resource *wifi_irqres;
  59
  60 int wifi_get_irq_number(unsigned long *irq_flags_ptr)
  61 {
  62         if (wifi_irqres) {
  63                 *irq_flags_ptr = wifi_irqres->flags & IRQF_TRIGGER_MASK;
  64                 return (int)wifi_irqres->start;
  65         }
  66 #ifdef CUSTOM_OOB_GPIO_NUM
  67         return CUSTOM_OOB_GPIO_NUM;
  68 #else
  69         return -1;
  70 #endif
  71 }
  72
  73 int wifi_set_carddetect(int on)
  74 {
  75         printk(KERN_ERR "%s = %d\n", __func__, on);
  76         if (wifi_control_data && wifi_control_data->set_carddetect)
  77                 wifi_control_data->set_carddetect(on);
  78         return 0;
  79 }
  80
  81 int wifi_set_power(int on, unsigned long msec)
  82 {
  83         printk(KERN_ERR "%s = %d\n", __func__, on);
  84         if (wifi_control_data && wifi_control_data->set_power)
  85                 wifi_control_data->set_power(on);
  86         if (msec)
  87                 mdelay(msec);
  88         return 0;
  89 }
  90
  91 int wifi_set_reset(int on, unsigned long msec)
  92 {
  93         printk(KERN_ERR "%s = %d\n", __func__, on);
  94         if (wifi_control_data && wifi_control_data->set_reset)
  95                 wifi_control_data->set_reset(on);
  96         if (msec)
  97                 mdelay(msec);
  98         return 0;
  99 }
 100
 101 static int wifi_probe(struct platform_device *pdev)
 102 {
 103         struct wifi_platform_data *wifi_ctrl =
 104             (struct wifi_platform_data *)(pdev->dev.platform_data);
 105
 106         printk(KERN_ERR "## %s\n", __func__);
 107         wifi_irqres =
 108             platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 109                                          "bcm4329_wlan_irq");
 110         wifi_control_data = wifi_ctrl;
 111
 112         wifi_set_power(1, 0);   /* Power On */
 113         wifi_set_carddetect(1); /* CardDetect (0->1) */
 114
 115         up(&wifi_control_sem);
 116         return 0;
 117 }
 118
 119 static int wifi_remove(struct platform_device *pdev)
 120 {
 121         struct wifi_platform_data *wifi_ctrl =
 122             (struct wifi_platform_data *)(pdev->dev.platform_data);
 123
 124         printk(KERN_ERR "## %s\n", __func__);
 125         wifi_control_data = wifi_ctrl;
 126
 127         wifi_set_carddetect(0); /* CardDetect (1->0) */
 128         wifi_set_power(0, 0);   /* Power Off */
 129
 130         up(&wifi_control_sem);
 131         return 0;
 132 }
 133
 134 static int wifi_suspend(struct platform_device *pdev, pm_message_t state)
 135 {
 136         DHD_TRACE(("##> %s\n", __func__));
 137         return 0;
 138 }
 139
 140 static int wifi_resume(struct platform_device *pdev)
 141 {
 142         DHD_TRACE(("##> %s\n", __func__));
 143         return 0;
 144 }
 145
 146 static struct platform_driver wifi_device = {
 147         .probe = wifi_probe,
 148         .remove = wifi_remove,
 149         .suspend = wifi_suspend,
 150         .resume = wifi_resume,
 151         .driver = {
 152                    .name = KBUILD_MODNAME,
 153                    }
 154 };
 155
 156 int wifi_add_dev(void)
 157 {
 158         DHD_TRACE(("## Calling platform_driver_register\n"));
 159         return platform_driver_register(&wifi_device);
 160 }
 161
 162 void wifi_del_dev(void)
 163 {
 164         DHD_TRACE(("## Unregister platform_driver_register\n"));
 165         platform_driver_unregister(&wifi_device);
 166 }
 167 #endif  /* defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
 168
 169 #if defined(CONFIG_PM_SLEEP)
 170 #include <linux/suspend.h>
 171 volatile bool dhd_mmc_suspend = false;
 172 DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait);
 173 #endif  /*  defined(CONFIG_PM_SLEEP) */
 174
 175 #if defined(OOB_INTR_ONLY)
 176 extern void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable);
 177 #endif  /* defined(OOB_INTR_ONLY) */
 178
 179 MODULE_AUTHOR("Broadcom Corporation");
 180 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
 181 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
 182 MODULE_LICENSE("Dual BSD/GPL");
 183
 184 #define DRV_MODULE_NAME "brcmfmac"
 185
 186 /* Linux wireless extension support */
 187 #if defined(CONFIG_WIRELESS_EXT)
 188 #include <wl_iw.h>
 189 extern wl_iw_extra_params_t g_wl_iw_params;
 190 #endif          /* defined(CONFIG_WIRELESS_EXT) */
 191
 192 #if defined(CONFIG_HAS_EARLYSUSPEND)
 193 #include <linux/earlysuspend.h>
 194 extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
 195                             uint len);
 196 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 197
 198 #ifdef PKT_FILTER_SUPPORT
 199 extern void dhd_pktfilter_offload_set(dhd_pub_t *dhd, char *arg);
 200 extern void dhd_pktfilter_offload_enable(dhd_pub_t *dhd, char *arg, int enable,
 201                                          int master_mode);
 202 #endif
 203
 204 /* Interface control information */
 205 typedef struct dhd_if {
 206         struct dhd_info *info;  /* back pointer to dhd_info */
 207         /* OS/stack specifics */
 208         struct net_device *net;
 209         struct net_device_stats stats;
 210         int idx;                /* iface idx in dongle */
 211         int state;              /* interface state */
 212         uint subunit;           /* subunit */
 213         u8 mac_addr[ETH_ALEN];  /* assigned MAC address */
 214         bool attached;          /* Delayed attachment when unset */
 215         bool txflowcontrol;     /* Per interface flow control indicator */
 216         char name[IFNAMSIZ];    /* linux interface name */
 217 } dhd_if_t;
 218
 219 /* Local private structure (extension of pub) */
 220 typedef struct dhd_info {
 221 #if defined(CONFIG_WIRELESS_EXT)
 222         wl_iw_t iw;             /* wireless extensions state (must be first) */
 223 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
 224
 225         dhd_pub_t pub;
 226
 227         /* OS/stack specifics */
 228         dhd_if_t *iflist[DHD_MAX_IFS];
 229
 230         struct semaphore proto_sem;
 231         wait_queue_head_t ioctl_resp_wait;
 232         struct timer_list timer;
 233         bool wd_timer_valid;
 234         struct tasklet_struct tasklet;
 235         spinlock_t sdlock;
 236         spinlock_t txqlock;
 237         /* Thread based operation */
 238         bool threads_only;
 239         struct semaphore sdsem;
 240         struct task_struct *watchdog_tsk;
 241         struct semaphore watchdog_sem;
 242         struct task_struct *dpc_tsk;
 243         struct semaphore dpc_sem;
 244
 245         /* Thread to issue ioctl for multicast */
 246         struct task_struct *sysioc_tsk;
 247         struct semaphore sysioc_sem;
 248         bool set_multicast;
 249         bool set_macaddress;
 250         u8 macvalue[ETH_ALEN];
 251         wait_queue_head_t ctrl_wait;
 252         atomic_t pend_8021x_cnt;
 253
 254 #ifdef CONFIG_HAS_EARLYSUSPEND
 255         struct early_suspend early_suspend;
 256 #endif                          /* CONFIG_HAS_EARLYSUSPEND */
 257 } dhd_info_t;
 258
 259 /* Definitions to provide path to the firmware and nvram
 260  * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt"
 261  */
 262 char firmware_path[MOD_PARAM_PATHLEN];
 263 char nvram_path[MOD_PARAM_PATHLEN];
 264
 265 /* load firmware and/or nvram values from the filesystem */
 266 module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0);
 267 module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0);
 268
 269 /* Error bits */
 270 module_param(dhd_msg_level, int, 0);
 271
 272 /* Spawn a thread for system ioctls (set mac, set mcast) */
 273 uint dhd_sysioc = true;
 274 module_param(dhd_sysioc, uint, 0);
 275
 276 /* Watchdog interval */
 277 uint dhd_watchdog_ms = 10;
 278 module_param(dhd_watchdog_ms, uint, 0);
 279
 280 #ifdef DHD_DEBUG
 281 /* Console poll interval */
 282 uint dhd_console_ms;
 283 module_param(dhd_console_ms, uint, 0);
 284 #endif                          /* DHD_DEBUG */
 285
 286 /* ARP offload agent mode : Enable ARP Host Auto-Reply
 287 and ARP Peer Auto-Reply */
 288 uint dhd_arp_mode = 0xb;
 289 module_param(dhd_arp_mode, uint, 0);
 290
 291 /* ARP offload enable */
 292 uint dhd_arp_enable = true;
 293 module_param(dhd_arp_enable, uint, 0);
 294
 295 /* Global Pkt filter enable control */
 296 uint dhd_pkt_filter_enable = true;
 297 module_param(dhd_pkt_filter_enable, uint, 0);
 298
 299 /*  Pkt filter init setup */
 300 uint dhd_pkt_filter_init;
 301 module_param(dhd_pkt_filter_init, uint, 0);
 302
 303 /* Pkt filter mode control */
 304 uint dhd_master_mode = true;
 305 module_param(dhd_master_mode, uint, 1);
 306
 307 /* Watchdog thread priority, -1 to use kernel timer */
 308 int dhd_watchdog_prio = 97;
 309 module_param(dhd_watchdog_prio, int, 0);
 310
 311 /* DPC thread priority, -1 to use tasklet */
 312 int dhd_dpc_prio = 98;
 313 module_param(dhd_dpc_prio, int, 0);
 314
 315 /* DPC thread priority, -1 to use tasklet */
 316 extern int dhd_dongle_memsize;
 317 module_param(dhd_dongle_memsize, int, 0);
 318
 319 /* Contorl fw roaming */
 320 #ifdef CUSTOMER_HW2
 321 uint dhd_roam;
 322 #else
 323 uint dhd_roam = 1;
 324 #endif
 325
 326 /* Control radio state */
 327 uint dhd_radio_up = 1;
 328
 329 /* Network inteface name */
 330 char iface_name[IFNAMSIZ];
 331 module_param_string(iface_name, iface_name, IFNAMSIZ, 0);
 332
 333 /* The following are specific to the SDIO dongle */
 334
 335 /* IOCTL response timeout */
 336 int dhd_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;
 337
 338 /* Idle timeout for backplane clock */
 339 int dhd_idletime = DHD_IDLETIME_TICKS;
 340 module_param(dhd_idletime, int, 0);
 341
 342 /* Use polling */
 343 uint dhd_poll = false;
 344 module_param(dhd_poll, uint, 0);
 345
 346 /* Use cfg80211 */
 347 uint dhd_cfg80211 = true;
 348 module_param(dhd_cfg80211, uint, 0);
 349
 350 /* Use interrupts */
 351 uint dhd_intr = true;
 352 module_param(dhd_intr, uint, 0);
 353
 354 /* SDIO Drive Strength (in milliamps) */
 355 uint dhd_sdiod_drive_strength = 6;
 356 module_param(dhd_sdiod_drive_strength, uint, 0);
 357
 358 /* Tx/Rx bounds */
 359 extern uint dhd_txbound;
 360 extern uint dhd_rxbound;
 361 module_param(dhd_txbound, uint, 0);
 362 module_param(dhd_rxbound, uint, 0);
 363
 364 /* Deferred transmits */
 365 extern uint dhd_deferred_tx;
 366 module_param(dhd_deferred_tx, uint, 0);
 367
 368 #ifdef SDTEST
 369 /* Echo packet generator (pkts/s) */
 370 uint dhd_pktgen;
 371 module_param(dhd_pktgen, uint, 0);
 372
 373 /* Echo packet len (0 => sawtooth, max 2040) */
 374 uint dhd_pktgen_len;
 375 module_param(dhd_pktgen_len, uint, 0);
 376 #endif
 377
 378 #define FAVORITE_WIFI_CP        (!!dhd_cfg80211)
 379 #define IS_CFG80211_FAVORITE() FAVORITE_WIFI_CP
 380 #define DBG_CFG80211_GET() ((dhd_cfg80211 & WL_DBG_MASK) >> 1)
 381 #define NO_FW_REQ() (dhd_cfg80211 & 0x80)
 382
 383 /* Version string to report */
 384 #ifdef DHD_DEBUG
 385 #define DHD_COMPILED "\nCompiled in " SRCBASE
 386 #else
 387 #define DHD_COMPILED
 388 #endif
 389
 390 #if defined(CONFIG_WIRELESS_EXT)
 391 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev);
 392 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
 393
 394 static void dhd_dpc(unsigned long data);
 395 /* forward decl */
 396 extern int dhd_wait_pend8021x(struct net_device *dev);
 397
 398 #ifdef TOE
 399 #ifndef BDC
 400 #error TOE requires BDC
 401 #endif                          /* !BDC */
 402 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
 403 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
 404 #endif                          /* TOE */
 405
 406 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
 407                              wl_event_msg_t *event_ptr, void **data_ptr);
 408
 409 #if defined(CONFIG_PM_SLEEP)
 410 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
 411                                  unsigned long action, void *ignored)
 412 {
 413         switch (action) {
 414         case PM_HIBERNATION_PREPARE:
 415         case PM_SUSPEND_PREPARE:
 416                 dhd_mmc_suspend = true;
 417                 return NOTIFY_OK;
 418         case PM_POST_HIBERNATION:
 419         case PM_POST_SUSPEND:
 420                 dhd_mmc_suspend = false;
 421                 return NOTIFY_OK;
 422         }
 423         return 0;
 424 }
 425
 426 static struct notifier_block dhd_sleep_pm_notifier = {
 427         .notifier_call = dhd_sleep_pm_callback,
 428         .priority = 0
 429 };
 430
 431 extern int register_pm_notifier(struct notifier_block *nb);
 432 extern int unregister_pm_notifier(struct notifier_block *nb);
 433 #endif  /* defined(CONFIG_PM_SLEEP) */
 434         /* && defined(DHD_GPL) */
 435 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
 436 {
 437 #ifdef PKT_FILTER_SUPPORT
 438         DHD_TRACE(("%s: %d\n", __func__, value));
 439         /* 1 - Enable packet filter, only allow unicast packet to send up */
 440         /* 0 - Disable packet filter */
 441         if (dhd_pkt_filter_enable) {
 442                 int i;
 443
 444                 for (i = 0; i < dhd->pktfilter_count; i++) {
 445                         dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
 446                         dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
 447                                                      value, dhd_master_mode);
 448                 }
 449         }
 450 #endif
 451 }
 452
 453 #if defined(CONFIG_HAS_EARLYSUSPEND)
 454 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
 455 {
 456         int power_mode = PM_MAX;
 457         /* wl_pkt_filter_enable_t       enable_parm; */
 458         char iovbuf[32];
 459         int bcn_li_dtim = 3;
 460 #ifdef CUSTOMER_HW2
 461         uint roamvar = 1;
 462 #endif                          /* CUSTOMER_HW2 */
 463
 464         DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
 465                    __func__, value, dhd->in_suspend));
 466
 467         if (dhd && dhd->up) {
 468                 if (value && dhd->in_suspend) {
 469
 470                         /* Kernel suspended */
 471                         DHD_TRACE(("%s: force extra Suspend setting\n",
 472                                    __func__));
 473
 474                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 475                                          (char *)&power_mode,
 476                                          sizeof(power_mode));
 477
 478                         /* Enable packet filter, only allow unicast
 479                                  packet to send up */
 480                         dhd_set_packet_filter(1, dhd);
 481
 482                         /* if dtim skip setup as default force it
 483                          * to wake each thrid dtim
 484                          * for better power saving.
 485                          * Note that side effect is chance to miss BC/MC
 486                          * packet
 487                          */
 488                         if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
 489                                 bcn_li_dtim = 3;
 490                         else
 491                                 bcn_li_dtim = dhd->dtim_skip;
 492                         bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
 493                                     4, iovbuf, sizeof(iovbuf));
 494                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 495                                          sizeof(iovbuf));
 496 #ifdef CUSTOMER_HW2
 497                         /* Disable build-in roaming to allowed \
 498                          * supplicant to take of romaing
 499                          */
 500                         bcm_mkiovar("roam_off", (char *)&roamvar, 4,
 501                                     iovbuf, sizeof(iovbuf));
 502                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 503                                          sizeof(iovbuf));
 504 #endif                          /* CUSTOMER_HW2 */
 505                 } else {
 506
 507                         /* Kernel resumed  */
 508                         DHD_TRACE(("%s: Remove extra suspend setting\n",
 509                                    __func__));
 510
 511                         power_mode = PM_FAST;
 512                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 513                                          (char *)&power_mode,
 514                                          sizeof(power_mode));
 515
 516                         /* disable pkt filter */
 517                         dhd_set_packet_filter(0, dhd);
 518
 519                         /* restore pre-suspend setting for dtim_skip */
 520                         bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
 521                                     4, iovbuf, sizeof(iovbuf));
 522
 523                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 524                                          sizeof(iovbuf));
 525 #ifdef CUSTOMER_HW2
 526                         roamvar = 0;
 527                         bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
 528                                     sizeof(iovbuf));
 529                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 530                                          sizeof(iovbuf));
 531 #endif                          /* CUSTOMER_HW2 */
 532                 }
 533         }
 534
 535         return 0;
 536 }
 537
 538 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
 539 {
 540         dhd_pub_t *dhdp = &dhd->pub;
 541
 542         dhd_os_proto_block(dhdp);
 543         /* Set flag when early suspend was called */
 544         dhdp->in_suspend = val;
 545         if (!dhdp->suspend_disable_flag)
 546                 dhd_set_suspend(val, dhdp);
 547         dhd_os_proto_unblock(dhdp);
 548 }
 549
 550 static void dhd_early_suspend(struct early_suspend *h)
 551 {
 552         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 553
 554         DHD_TRACE(("%s: enter\n", __func__));
 555
 556         if (dhd)
 557                 dhd_suspend_resume_helper(dhd, 1);
 558
 559 }
 560
 561 static void dhd_late_resume(struct early_suspend *h)
 562 {
 563         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 564
 565         DHD_TRACE(("%s: enter\n", __func__));
 566
 567         if (dhd)
 568                 dhd_suspend_resume_helper(dhd, 0);
 569 }
 570 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 571
 572 /*
 573  * Generalized timeout mechanism.  Uses spin sleep with exponential
 574  * back-off until
 575  * the sleep time reaches one jiffy, then switches over to task delay.  Usage:
 576  *
 577  *      dhd_timeout_start(&tmo, usec);
 578  *      while (!dhd_timeout_expired(&tmo))
 579  *              if (poll_something())
 580  *                      break;
 581  *      if (dhd_timeout_expired(&tmo))
 582  *              fatal();
 583  */
 584
 585 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
 586 {
 587         tmo->limit = usec;
 588         tmo->increment = 0;
 589         tmo->elapsed = 0;
 590         tmo->tick = 1000000 / HZ;
 591 }
 592
 593 int dhd_timeout_expired(dhd_timeout_t *tmo)
 594 {
 595         /* Does nothing the first call */
 596         if (tmo->increment == 0) {
 597                 tmo->increment = 1;
 598                 return 0;
 599         }
 600
 601         if (tmo->elapsed >= tmo->limit)
 602                 return 1;
 603
 604         /* Add the delay that's about to take place */
 605         tmo->elapsed += tmo->increment;
 606
 607         if (tmo->increment < tmo->tick) {
 608                 udelay(tmo->increment);
 609                 tmo->increment *= 2;
 610                 if (tmo->increment > tmo->tick)
 611                         tmo->increment = tmo->tick;
 612         } else {
 613                 wait_queue_head_t delay_wait;
 614                 DECLARE_WAITQUEUE(wait, current);
 615                 int pending;
 616                 init_waitqueue_head(&delay_wait);
 617                 add_wait_queue(&delay_wait, &wait);
 618                 set_current_state(TASK_INTERRUPTIBLE);
 619                 schedule_timeout(1);
 620                 pending = signal_pending(current);
 621                 remove_wait_queue(&delay_wait, &wait);
 622                 set_current_state(TASK_RUNNING);
 623                 if (pending)
 624                         return 1;       /* Interrupted */
 625         }
 626
 627         return 0;
 628 }
 629
 630 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
 631 {
 632         int i = 0;
 633
 634         ASSERT(dhd);
 635         while (i < DHD_MAX_IFS) {
 636                 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
 637                         return i;
 638                 i++;
 639         }
 640
 641         return DHD_BAD_IF;
 642 }
 643
 644 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
 645 {
 646         int i = DHD_MAX_IFS;
 647
 648         ASSERT(dhd);
 649
 650         if (name == NULL || *name == '\0')
 651                 return 0;
 652
 653         while (--i > 0)
 654                 if (dhd->iflist[i]
 655                     && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
 656                         break;
 657
 658         DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
 659
 660         return i;               /* default - the primary interface */
 661 }
 662
 663 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
 664 {
 665         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
 666
 667         ASSERT(dhd);
 668
 669         if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
 670                 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
 671                 return "<if_bad>";
 672         }
 673
 674         if (dhd->iflist[ifidx] == NULL) {
 675                 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
 676                 return "<if_null>";
 677         }
 678
 679         if (dhd->iflist[ifidx]->net)
 680                 return dhd->iflist[ifidx]->net->name;
 681
 682         return "<if_none>";
 683 }
 684
 685 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
 686 {
 687         struct net_device *dev;
 688         struct netdev_hw_addr *ha;
 689         u32 allmulti, cnt;
 690
 691         wl_ioctl_t ioc;
 692         char *buf, *bufp;
 693         uint buflen;
 694         int ret;
 695
 696         ASSERT(dhd && dhd->iflist[ifidx]);
 697         dev = dhd->iflist[ifidx]->net;
 698         cnt = netdev_mc_count(dev);
 699
 700         /* Determine initial value of allmulti flag */
 701         allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
 702
 703         /* Send down the multicast list first. */
 704
 705         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
 706         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 707         if (!bufp) {
 708                 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
 709                            dhd_ifname(&dhd->pub, ifidx), cnt));
 710                 return;
 711         }
 712
 713         strcpy(bufp, "mcast_list");
 714         bufp += strlen("mcast_list") + 1;
 715
 716         cnt = htol32(cnt);
 717         memcpy(bufp, &cnt, sizeof(cnt));
 718         bufp += sizeof(cnt);
 719
 720         netdev_for_each_mc_addr(ha, dev) {
 721                 if (!cnt)
 722                         break;
 723                 memcpy(bufp, ha->addr, ETH_ALEN);
 724                 bufp += ETH_ALEN;
 725                 cnt--;
 726         }
 727
 728         memset(&ioc, 0, sizeof(ioc));
 729         ioc.cmd = WLC_SET_VAR;
 730         ioc.buf = buf;
 731         ioc.len = buflen;
 732         ioc.set = true;
 733
 734         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 735         if (ret < 0) {
 736                 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
 737                            dhd_ifname(&dhd->pub, ifidx), cnt));
 738                 allmulti = cnt ? true : allmulti;
 739         }
 740
 741         kfree(buf);
 742
 743         /* Now send the allmulti setting.  This is based on the setting in the
 744          * net_device flags, but might be modified above to be turned on if we
 745          * were trying to set some addresses and dongle rejected it...
 746          */
 747
 748         buflen = sizeof("allmulti") + sizeof(allmulti);
 749         buf = kmalloc(buflen, GFP_ATOMIC);
 750         if (!buf) {
 751                 DHD_ERROR(("%s: out of memory for allmulti\n",
 752                            dhd_ifname(&dhd->pub, ifidx)));
 753                 return;
 754         }
 755         allmulti = htol32(allmulti);
 756
 757         if (!bcm_mkiovar
 758             ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
 759                 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
 760                         "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
 761                         (int)sizeof(allmulti), buflen));
 762                 kfree(buf);
 763                 return;
 764         }
 765
 766         memset(&ioc, 0, sizeof(ioc));
 767         ioc.cmd = WLC_SET_VAR;
 768         ioc.buf = buf;
 769         ioc.len = buflen;
 770         ioc.set = true;
 771
 772         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 773         if (ret < 0) {
 774                 DHD_ERROR(("%s: set allmulti %d failed\n",
 775                            dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
 776         }
 777
 778         kfree(buf);
 779
 780         /* Finally, pick up the PROMISC flag as well, like the NIC
 781                  driver does */
 782
 783         allmulti = (dev->flags & IFF_PROMISC) ? true : false;
 784         allmulti = htol32(allmulti);
 785
 786         memset(&ioc, 0, sizeof(ioc));
 787         ioc.cmd = WLC_SET_PROMISC;
 788         ioc.buf = &allmulti;
 789         ioc.len = sizeof(allmulti);
 790         ioc.set = true;
 791
 792         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 793         if (ret < 0) {
 794                 DHD_ERROR(("%s: set promisc %d failed\n",
 795                            dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
 796         }
 797 }
 798
 799 static int
 800 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, u8 *addr)
 801 {
 802         char buf[32];
 803         wl_ioctl_t ioc;
 804         int ret;
 805
 806         DHD_TRACE(("%s enter\n", __func__));
 807         if (!bcm_mkiovar
 808             ("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) {
 809                 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
 810                            dhd_ifname(&dhd->pub, ifidx)));
 811                 return -1;
 812         }
 813         memset(&ioc, 0, sizeof(ioc));
 814         ioc.cmd = WLC_SET_VAR;
 815         ioc.buf = buf;
 816         ioc.len = 32;
 817         ioc.set = true;
 818
 819         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 820         if (ret < 0) {
 821                 DHD_ERROR(("%s: set cur_etheraddr failed\n",
 822                            dhd_ifname(&dhd->pub, ifidx)));
 823         } else {
 824                 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN);
 825         }
 826
 827         return ret;
 828 }
 829
 830 #ifdef SOFTAP
 831 extern struct net_device *ap_net_dev;
 832 #endif
 833
 834 static void dhd_op_if(dhd_if_t *ifp)
 835 {
 836         dhd_info_t *dhd;
 837         int ret = 0, err = 0;
 838
 839         ASSERT(ifp && ifp->info && ifp->idx);   /* Virtual interfaces only */
 840
 841         dhd = ifp->info;
 842
 843         DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
 844
 845         switch (ifp->state) {
 846         case WLC_E_IF_ADD:
 847                 /*
 848                  * Delete the existing interface before overwriting it
 849                  * in case we missed the WLC_E_IF_DEL event.
 850                  */
 851                 if (ifp->net != NULL) {
 852                         DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
 853                         "try free & unregister\n",
 854                         __func__, ifp->net->name));
 855                         netif_stop_queue(ifp->net);
 856                         unregister_netdev(ifp->net);
 857                         free_netdev(ifp->net);
 858                 }
 859                 /* Allocate etherdev, including space for private structure */
 860                 ifp->net = alloc_etherdev(sizeof(dhd));
 861                 if (!ifp->net) {
 862                         DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
 863                         ret = -ENOMEM;
 864                 }
 865                 if (ret == 0) {
 866                         strcpy(ifp->net->name, ifp->name);
 867                         memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
 868                         err = dhd_net_attach(&dhd->pub, ifp->idx);
 869                         if (err != 0) {
 870                                 DHD_ERROR(("%s: dhd_net_attach failed, "
 871                                         "err %d\n",
 872                                         __func__, err));
 873                                 ret = -EOPNOTSUPP;
 874                         } else {
 875 #ifdef SOFTAP
 876                                 /* semaphore that the soft AP CODE
 877                                          waits on */
 878                                 extern struct semaphore ap_eth_sema;
 879
 880                                 /* save ptr to wl0.1 netdev for use
 881                                          in wl_iw.c  */
 882                                 ap_net_dev = ifp->net;
 883                                 /* signal to the SOFTAP 'sleeper' thread,
 884                                          wl0.1 is ready */
 885                                 up(&ap_eth_sema);
 886 #endif
 887                                 DHD_TRACE(("\n ==== pid:%x, net_device for "
 888                                         "if:%s created ===\n\n",
 889                                         current->pid, ifp->net->name));
 890                                 ifp->state = 0;
 891                         }
 892                 }
 893                 break;
 894         case WLC_E_IF_DEL:
 895                 if (ifp->net != NULL) {
 896                         DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
 897                                    __func__));
 898                         netif_stop_queue(ifp->net);
 899                         unregister_netdev(ifp->net);
 900                         ret = DHD_DEL_IF;       /* Make sure the free_netdev()
 901                                                          is called */
 902                 }
 903                 break;
 904         default:
 905                 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
 906                 ASSERT(!ifp->state);
 907                 break;
 908         }
 909
 910         if (ret < 0) {
 911                 if (ifp->net)
 912                         free_netdev(ifp->net);
 913
 914                 dhd->iflist[ifp->idx] = NULL;
 915                 kfree(ifp);
 916 #ifdef SOFTAP
 917                 if (ifp->net == ap_net_dev)
 918                         ap_net_dev = NULL;      /*  NULL  SOFTAP global
 919                                                          wl0.1 as well */
 920 #endif                          /*  SOFTAP */
 921         }
 922 }
 923
 924 static int _dhd_sysioc_thread(void *data)
 925 {
 926         dhd_info_t *dhd = (dhd_info_t *) data;
 927         int i;
 928 #ifdef SOFTAP
 929         bool in_ap = false;
 930 #endif
 931
 932         allow_signal(SIGTERM);
 933
 934         while (down_interruptible(&dhd->sysioc_sem) == 0) {
 935                 if (kthread_should_stop())
 936                         break;
 937                 for (i = 0; i < DHD_MAX_IFS; i++) {
 938                         if (dhd->iflist[i]) {
 939 #ifdef SOFTAP
 940                                 in_ap = (ap_net_dev != NULL);
 941 #endif                          /* SOFTAP */
 942                                 if (dhd->iflist[i]->state)
 943                                         dhd_op_if(dhd->iflist[i]);
 944 #ifdef SOFTAP
 945                                 if (dhd->iflist[i] == NULL) {
 946                                         DHD_TRACE(("\n\n %s: interface %d "
 947                                                 "removed!\n", __func__, i));
 948                                         continue;
 949                                 }
 950
 951                                 if (in_ap && dhd->set_macaddress) {
 952                                         DHD_TRACE(("attempt to set MAC for %s "
 953                                                 "in AP Mode," "blocked. \n",
 954                                                 dhd->iflist[i]->net->name));
 955                                         dhd->set_macaddress = false;
 956                                         continue;
 957                                 }
 958
 959                                 if (in_ap && dhd->set_multicast) {
 960                                         DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
 961                                                 dhd->iflist[i]->net->name));
 962                                         dhd->set_multicast = false;
 963                                         continue;
 964                                 }
 965 #endif                          /* SOFTAP */
 966                                 if (dhd->set_multicast) {
 967                                         dhd->set_multicast = false;
 968                                         _dhd_set_multicast_list(dhd, i);
 969                                 }
 970                                 if (dhd->set_macaddress) {
 971                                         dhd->set_macaddress = false;
 972                                         _dhd_set_mac_address(dhd, i,
 973                                                              dhd->macvalue);
 974                                 }
 975                         }
 976                 }
 977         }
 978         return 0;
 979 }
 980
 981 static int dhd_set_mac_address(struct net_device *dev, void *addr)
 982 {
 983         int ret = 0;
 984
 985         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
 986         struct sockaddr *sa = (struct sockaddr *)addr;
 987         int ifidx;
 988
 989         ifidx = dhd_net2idx(dhd, dev);
 990         if (ifidx == DHD_BAD_IF)
 991                 return -1;
 992
 993         ASSERT(dhd->sysioc_tsk);
 994         memcpy(&dhd->macvalue, sa->sa_data, ETH_ALEN);
 995         dhd->set_macaddress = true;
 996         up(&dhd->sysioc_sem);
 997
 998         return ret;
 999 }
1000
1001 static void dhd_set_multicast_list(struct net_device *dev)
1002 {
1003         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1004         int ifidx;
1005
1006         ifidx = dhd_net2idx(dhd, dev);
1007         if (ifidx == DHD_BAD_IF)
1008                 return;
1009
1010         ASSERT(dhd->sysioc_tsk);
1011         dhd->set_multicast = true;
1012         up(&dhd->sysioc_sem);
1013 }
1014
1015 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf)
1016 {
1017         int ret;
1018         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1019
1020         /* Reject if down */
1021         if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1022                 return -ENODEV;
1023
1024         /* Update multicast statistic */
1025         if (pktbuf->len >= ETH_ALEN) {
1026                 u8 *pktdata = (u8 *) (pktbuf->data);
1027                 struct ethhdr *eh = (struct ethhdr *)pktdata;
1028
1029                 if (is_multicast_ether_addr(eh->h_dest))
1030                         dhdp->tx_multicast++;
1031                 if (ntoh16(eh->h_proto) == ETH_P_PAE)
1032                         atomic_inc(&dhd->pend_8021x_cnt);
1033         }
1034
1035         /* If the protocol uses a data header, apply it */
1036         dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1037
1038         /* Use bus module to send data frame */
1039 #ifdef BCMDBUS
1040         ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1041 #else
1042         ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1043 #endif                          /* BCMDBUS */
1044
1045         return ret;
1046 }
1047
1048 static inline void *
1049 osl_pkt_frmnative(struct osl_info *osh, struct sk_buff *skb)
1050 {
1051         struct sk_buff *nskb;
1052
1053         for (nskb = skb; nskb; nskb = nskb->next)
1054                 osh->pktalloced++;
1055
1056         return (void *)skb;
1057 }
1058 #define PKTFRMNATIVE(osh, skb)  \
1059         osl_pkt_frmnative((osh), (struct sk_buff *)(skb))
1060
1061 static inline struct sk_buff *
1062 osl_pkt_tonative(struct osl_info *osh, void *pkt)
1063 {
1064         struct sk_buff *nskb;
1065
1066         for (nskb = (struct sk_buff *)pkt; nskb; nskb = nskb->next)
1067                 osh->pktalloced--;
1068
1069         return (struct sk_buff *)pkt;
1070 }
1071 #define PKTTONATIVE(osh, pkt)   \
1072         osl_pkt_tonative((osh), (pkt))
1073
1074 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1075 {
1076         int ret;
1077         void *pktbuf;
1078         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1079         int ifidx;
1080
1081         DHD_TRACE(("%s: Enter\n", __func__));
1082
1083         /* Reject if down */
1084         if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1085                 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1086                            __func__, dhd->pub.up, dhd->pub.busstate));
1087                 netif_stop_queue(net);
1088                 return -ENODEV;
1089         }
1090
1091         ifidx = dhd_net2idx(dhd, net);
1092         if (ifidx == DHD_BAD_IF) {
1093                 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1094                 netif_stop_queue(net);
1095                 return -ENODEV;
1096         }
1097
1098         /* Make sure there's enough room for any header */
1099         if (skb_headroom(skb) < dhd->pub.hdrlen) {
1100                 struct sk_buff *skb2;
1101
1102                 DHD_INFO(("%s: insufficient headroom\n",
1103                           dhd_ifname(&dhd->pub, ifidx)));
1104                 dhd->pub.tx_realloc++;
1105                 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1106                 dev_kfree_skb(skb);
1107                 skb = skb2;
1108                 if (skb == NULL) {
1109                         DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1110                                    dhd_ifname(&dhd->pub, ifidx)));
1111                         ret = -ENOMEM;
1112                         goto done;
1113                 }
1114         }
1115
1116         /* Convert to packet */
1117         pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1118         if (!pktbuf) {
1119                 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1120                            dhd_ifname(&dhd->pub, ifidx)));
1121                 dev_kfree_skb_any(skb);
1122                 ret = -ENOMEM;
1123                 goto done;
1124         }
1125
1126         ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1127
1128 done:
1129         if (ret)
1130                 dhd->pub.dstats.tx_dropped++;
1131         else
1132                 dhd->pub.tx_packets++;
1133
1134         /* Return ok: we always eat the packet */
1135         return 0;
1136 }
1137
1138 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1139 {
1140         struct net_device *net;
1141         dhd_info_t *dhd = dhdp->info;
1142
1143         DHD_TRACE(("%s: Enter\n", __func__));
1144
1145         dhdp->txoff = state;
1146         ASSERT(dhd && dhd->iflist[ifidx]);
1147         net = dhd->iflist[ifidx]->net;
1148         if (state == ON)
1149                 netif_stop_queue(net);
1150         else
1151                 netif_wake_queue(net);
1152 }
1153
1154 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf,
1155                   int numpkt)
1156 {
1157         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1158         struct sk_buff *skb;
1159         unsigned char *eth;
1160         uint len;
1161         void *data;
1162         struct sk_buff *pnext, *save_pktbuf;
1163         int i;
1164         dhd_if_t *ifp;
1165         wl_event_msg_t event;
1166
1167         DHD_TRACE(("%s: Enter\n", __func__));
1168
1169         save_pktbuf = pktbuf;
1170
1171         for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1172
1173                 pnext = pktbuf->next;
1174                 pktbuf->next = NULL;
1175
1176                 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1177
1178                 /* Get the protocol, maintain skb around eth_type_trans()
1179                  * The main reason for this hack is for the limitation of
1180                  * Linux 2.4 where 'eth_type_trans' uses the
1181                  * 'net->hard_header_len'
1182                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1183                  * coping of the packet coming from the network stack to add
1184                  * BDC, Hardware header etc, during network interface
1185                  * registration
1186                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1187                  * required
1188                  * for BDC, Hardware header etc. and not just the ETH_HLEN
1189                  */
1190                 eth = skb->data;
1191                 len = skb->len;
1192
1193                 ifp = dhd->iflist[ifidx];
1194                 if (ifp == NULL)
1195                         ifp = dhd->iflist[0];
1196
1197                 ASSERT(ifp);
1198                 skb->dev = ifp->net;
1199                 skb->protocol = eth_type_trans(skb, skb->dev);
1200
1201                 if (skb->pkt_type == PACKET_MULTICAST)
1202                         dhd->pub.rx_multicast++;
1203
1204                 skb->data = eth;
1205                 skb->len = len;
1206
1207                 /* Strip header, count, deliver upward */
1208                 skb_pull(skb, ETH_HLEN);
1209
1210                 /* Process special event packets and then discard them */
1211                 if (ntoh16(skb->protocol) == ETH_P_BRCM)
1212                         dhd_wl_host_event(dhd, &ifidx,
1213                                           skb_mac_header(skb),
1214                                           &event, &data);
1215
1216                 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1217                 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1218                         ifp = dhd->iflist[ifidx];
1219
1220                 if (ifp->net)
1221                         ifp->net->last_rx = jiffies;
1222
1223                 dhdp->dstats.rx_bytes += skb->len;
1224                 dhdp->rx_packets++;     /* Local count */
1225
1226                 if (in_interrupt()) {
1227                         netif_rx(skb);
1228                 } else {
1229                         /* If the receive is not processed inside an ISR,
1230                          * the softirqd must be woken explicitly to service
1231                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
1232                          * by netif_rx_ni(), but in earlier kernels, we need
1233                          * to do it manually.
1234                          */
1235                         netif_rx_ni(skb);
1236                 }
1237         }
1238 }
1239
1240 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1241 {
1242         /* Linux version has nothing to do */
1243         return;
1244 }
1245
1246 void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success)
1247 {
1248         uint ifidx;
1249         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1250         struct ethhdr *eh;
1251         u16 type;
1252
1253         dhd_prot_hdrpull(dhdp, &ifidx, txp);
1254
1255         eh = (struct ethhdr *)(txp->data);
1256         type = ntoh16(eh->h_proto);
1257
1258         if (type == ETH_P_PAE)
1259                 atomic_dec(&dhd->pend_8021x_cnt);
1260
1261 }
1262
1263 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1264 {
1265         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1266         dhd_if_t *ifp;
1267         int ifidx;
1268
1269         DHD_TRACE(("%s: Enter\n", __func__));
1270
1271         ifidx = dhd_net2idx(dhd, net);
1272         if (ifidx == DHD_BAD_IF)
1273                 return NULL;
1274
1275         ifp = dhd->iflist[ifidx];
1276         ASSERT(dhd && ifp);
1277
1278         if (dhd->pub.up) {
1279                 /* Use the protocol to get dongle stats */
1280                 dhd_prot_dstats(&dhd->pub);
1281         }
1282
1283         /* Copy dongle stats to net device stats */
1284         ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1285         ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1286         ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1287         ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1288         ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1289         ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1290         ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1291         ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1292         ifp->stats.multicast = dhd->pub.dstats.multicast;
1293
1294         return &ifp->stats;
1295 }
1296
1297 static int dhd_watchdog_thread(void *data)
1298 {
1299         dhd_info_t *dhd = (dhd_info_t *) data;
1300
1301         /* This thread doesn't need any user-level access,
1302          * so get rid of all our resources
1303          */
1304 #ifdef DHD_SCHED
1305         if (dhd_watchdog_prio > 0) {
1306                 struct sched_param param;
1307                 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1308                     dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1309                 setScheduler(current, SCHED_FIFO, &param);
1310         }
1311 #endif                          /* DHD_SCHED */
1312
1313         allow_signal(SIGTERM);
1314         /* Run until signal received */
1315         while (1) {
1316                 if (kthread_should_stop())
1317                         break;
1318                 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1319                         if (dhd->pub.dongle_reset == false) {
1320                                 /* Call the bus module watchdog */
1321                                 dhd_bus_watchdog(&dhd->pub);
1322                         }
1323                         /* Count the tick for reference */
1324                         dhd->pub.tickcnt++;
1325                 } else
1326                         break;
1327         }
1328         return 0;
1329 }
1330
1331 static void dhd_watchdog(unsigned long data)
1332 {
1333         dhd_info_t *dhd = (dhd_info_t *) data;
1334
1335         if (dhd->watchdog_tsk) {
1336                 up(&dhd->watchdog_sem);
1337
1338                 /* Reschedule the watchdog */
1339                 if (dhd->wd_timer_valid) {
1340                         mod_timer(&dhd->timer,
1341                                   jiffies + dhd_watchdog_ms * HZ / 1000);
1342                 }
1343                 return;
1344         }
1345
1346         /* Call the bus module watchdog */
1347         dhd_bus_watchdog(&dhd->pub);
1348
1349         /* Count the tick for reference */
1350         dhd->pub.tickcnt++;
1351
1352         /* Reschedule the watchdog */
1353         if (dhd->wd_timer_valid)
1354                 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1355 }
1356
1357 static int dhd_dpc_thread(void *data)
1358 {
1359         dhd_info_t *dhd = (dhd_info_t *) data;
1360
1361         /* This thread doesn't need any user-level access,
1362          * so get rid of all our resources
1363          */
1364 #ifdef DHD_SCHED
1365         if (dhd_dpc_prio > 0) {
1366                 struct sched_param param;
1367                 param.sched_priority =
1368                     (dhd_dpc_prio <
1369                      MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1370                 setScheduler(current, SCHED_FIFO, &param);
1371         }
1372 #endif                          /* DHD_SCHED */
1373
1374         allow_signal(SIGTERM);
1375         /* Run until signal received */
1376         while (1) {
1377                 if (kthread_should_stop())
1378                         break;
1379                 if (down_interruptible(&dhd->dpc_sem) == 0) {
1380                         /* Call bus dpc unless it indicated down
1381                                  (then clean stop) */
1382                         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1383                                 if (dhd_bus_dpc(dhd->pub.bus)) {
1384                                         up(&dhd->dpc_sem);
1385                                 }
1386                         } else {
1387                                 dhd_bus_stop(dhd->pub.bus, true);
1388                         }
1389                 } else
1390                         break;
1391         }
1392         return 0;
1393 }
1394
1395 static void dhd_dpc(unsigned long data)
1396 {
1397         dhd_info_t *dhd;
1398
1399         dhd = (dhd_info_t *) data;
1400
1401         /* Call bus dpc unless it indicated down (then clean stop) */
1402         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1403                 if (dhd_bus_dpc(dhd->pub.bus))
1404                         tasklet_schedule(&dhd->tasklet);
1405         } else {
1406                 dhd_bus_stop(dhd->pub.bus, true);
1407         }
1408 }
1409
1410 void dhd_sched_dpc(dhd_pub_t *dhdp)
1411 {
1412         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1413
1414         if (dhd->dpc_tsk) {
1415                 up(&dhd->dpc_sem);
1416                 return;
1417         }
1418
1419         tasklet_schedule(&dhd->tasklet);
1420 }
1421
1422 #ifdef TOE
1423 /* Retrieve current toe component enables, which are kept
1424          as a bitmap in toe_ol iovar */
1425 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1426 {
1427         wl_ioctl_t ioc;
1428         char buf[32];
1429         int ret;
1430
1431         memset(&ioc, 0, sizeof(ioc));
1432
1433         ioc.cmd = WLC_GET_VAR;
1434         ioc.buf = buf;
1435         ioc.len = (uint) sizeof(buf);
1436         ioc.set = false;
1437
1438         strcpy(buf, "toe_ol");
1439         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1440         if (ret < 0) {
1441                 /* Check for older dongle image that doesn't support toe_ol */
1442                 if (ret == -EIO) {
1443                         DHD_ERROR(("%s: toe not supported by device\n",
1444                                    dhd_ifname(&dhd->pub, ifidx)));
1445                         return -EOPNOTSUPP;
1446                 }
1447
1448                 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1449                           dhd_ifname(&dhd->pub, ifidx), ret));
1450                 return ret;
1451         }
1452
1453         memcpy(toe_ol, buf, sizeof(u32));
1454         return 0;
1455 }
1456
1457 /* Set current toe component enables in toe_ol iovar,
1458          and set toe global enable iovar */
1459 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1460 {
1461         wl_ioctl_t ioc;
1462         char buf[32];
1463         int toe, ret;
1464
1465         memset(&ioc, 0, sizeof(ioc));
1466
1467         ioc.cmd = WLC_SET_VAR;
1468         ioc.buf = buf;
1469         ioc.len = (uint) sizeof(buf);
1470         ioc.set = true;
1471
1472         /* Set toe_ol as requested */
1473
1474         strcpy(buf, "toe_ol");
1475         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1476
1477         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1478         if (ret < 0) {
1479                 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1480                            dhd_ifname(&dhd->pub, ifidx), ret));
1481                 return ret;
1482         }
1483
1484         /* Enable toe globally only if any components are enabled. */
1485
1486         toe = (toe_ol != 0);
1487
1488         strcpy(buf, "toe");
1489         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1490
1491         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1492         if (ret < 0) {
1493                 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1494                            dhd_ifname(&dhd->pub, ifidx), ret));
1495                 return ret;
1496         }
1497
1498         return 0;
1499 }
1500 #endif                          /* TOE */
1501
1502 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1503                                     struct ethtool_drvinfo *info)
1504 {
1505         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1506
1507         sprintf(info->driver, DRV_MODULE_NAME);
1508         sprintf(info->version, "%lu", dhd->pub.drv_version);
1509         sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1510         sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1511 }
1512
1513 struct ethtool_ops dhd_ethtool_ops = {
1514         .get_drvinfo = dhd_ethtool_get_drvinfo
1515 };
1516
1517 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1518 {
1519         struct ethtool_drvinfo info;
1520         char drvname[sizeof(info.driver)];
1521         u32 cmd;
1522 #ifdef TOE
1523         struct ethtool_value edata;
1524         u32 toe_cmpnt, csum_dir;
1525         int ret;
1526 #endif
1527
1528         DHD_TRACE(("%s: Enter\n", __func__));
1529
1530         /* all ethtool calls start with a cmd word */
1531         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1532                 return -EFAULT;
1533
1534         switch (cmd) {
1535         case ETHTOOL_GDRVINFO:
1536                 /* Copy out any request driver name */
1537                 if (copy_from_user(&info, uaddr, sizeof(info)))
1538                         return -EFAULT;
1539                 strncpy(drvname, info.driver, sizeof(info.driver));
1540                 drvname[sizeof(info.driver) - 1] = '\0';
1541
1542                 /* clear struct for return */
1543                 memset(&info, 0, sizeof(info));
1544                 info.cmd = cmd;
1545
1546                 /* if dhd requested, identify ourselves */
1547                 if (strcmp(drvname, "?dhd") == 0) {
1548                         sprintf(info.driver, "dhd");
1549                         strcpy(info.version, EPI_VERSION_STR);
1550                 }
1551
1552                 /* otherwise, require dongle to be up */
1553                 else if (!dhd->pub.up) {
1554                         DHD_ERROR(("%s: dongle is not up\n", __func__));
1555                         return -ENODEV;
1556                 }
1557
1558                 /* finally, report dongle driver type */
1559                 else if (dhd->pub.iswl)
1560                         sprintf(info.driver, "wl");
1561                 else
1562                         sprintf(info.driver, "xx");
1563
1564                 sprintf(info.version, "%lu", dhd->pub.drv_version);
1565                 if (copy_to_user(uaddr, &info, sizeof(info)))
1566                         return -EFAULT;
1567                 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1568                          (int)sizeof(drvname), drvname, info.driver));
1569                 break;
1570
1571 #ifdef TOE
1572                 /* Get toe offload components from dongle */
1573         case ETHTOOL_GRXCSUM:
1574         case ETHTOOL_GTXCSUM:
1575                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1576                 if (ret < 0)
1577                         return ret;
1578
1579                 csum_dir =
1580                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1581
1582                 edata.cmd = cmd;
1583                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1584
1585                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1586                         return -EFAULT;
1587                 break;
1588
1589                 /* Set toe offload components in dongle */
1590         case ETHTOOL_SRXCSUM:
1591         case ETHTOOL_STXCSUM:
1592                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1593                         return -EFAULT;
1594
1595                 /* Read the current settings, update and write back */
1596                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1597                 if (ret < 0)
1598                         return ret;
1599
1600                 csum_dir =
1601                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1602
1603                 if (edata.data != 0)
1604                         toe_cmpnt |= csum_dir;
1605                 else
1606                         toe_cmpnt &= ~csum_dir;
1607
1608                 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1609                 if (ret < 0)
1610                         return ret;
1611
1612                 /* If setting TX checksum mode, tell Linux the new mode */
1613                 if (cmd == ETHTOOL_STXCSUM) {
1614                         if (edata.data)
1615                                 dhd->iflist[0]->net->features |=
1616                                     NETIF_F_IP_CSUM;
1617                         else
1618                                 dhd->iflist[0]->net->features &=
1619                                     ~NETIF_F_IP_CSUM;
1620                 }
1621
1622                 break;
1623 #endif                          /* TOE */
1624
1625         default:
1626                 return -EOPNOTSUPP;
1627         }
1628
1629         return 0;
1630 }
1631
1632 static s16 linuxbcmerrormap[] = { 0,    /* 0 */
1633         -EINVAL,                /* BCME_ERROR */
1634         -EINVAL,                /* BCME_BADARG */
1635         -EINVAL,                /* BCME_BADOPTION */
1636         -EINVAL,                /* BCME_NOTUP */
1637         -EINVAL,                /* BCME_NOTDOWN */
1638         -EINVAL,                /* BCME_NOTAP */
1639         -EINVAL,                /* BCME_NOTSTA */
1640         -EINVAL,                /* BCME_BADKEYIDX */
1641         -EINVAL,                /* BCME_RADIOOFF */
1642         -EINVAL,                /* BCME_NOTBANDLOCKED */
1643         -EINVAL,                /* BCME_NOCLK */
1644         -EINVAL,                /* BCME_BADRATESET */
1645         -EINVAL,                /* BCME_BADBAND */
1646         -E2BIG,                 /* BCME_BUFTOOSHORT */
1647         -E2BIG,                 /* BCME_BUFTOOLONG */
1648         -EBUSY,                 /* BCME_BUSY */
1649         -EINVAL,                /* BCME_NOTASSOCIATED */
1650         -EINVAL,                /* BCME_BADSSIDLEN */
1651         -EINVAL,                /* BCME_OUTOFRANGECHAN */
1652         -EINVAL,                /* BCME_BADCHAN */
1653         -EFAULT,                /* BCME_BADADDR */
1654         -ENOMEM,                /* BCME_NORESOURCE */
1655         -EOPNOTSUPP,            /* BCME_UNSUPPORTED */
1656         -EMSGSIZE,              /* BCME_BADLENGTH */
1657         -EINVAL,                /* BCME_NOTREADY */
1658         -EPERM,                 /* BCME_NOTPERMITTED */
1659         -ENOMEM,                /* BCME_NOMEM */
1660         -EINVAL,                /* BCME_ASSOCIATED */
1661         -ERANGE,                /* BCME_RANGE */
1662         -EINVAL,                /* BCME_NOTFOUND */
1663         -EINVAL,                /* BCME_WME_NOT_ENABLED */
1664         -EINVAL,                /* BCME_TSPEC_NOTFOUND */
1665         -EINVAL,                /* BCME_ACM_NOTSUPPORTED */
1666         -EINVAL,                /* BCME_NOT_WME_ASSOCIATION */
1667         -EIO,                   /* BCME_SDIO_ERROR */
1668         -ENODEV,                /* BCME_DONGLE_DOWN */
1669         -EINVAL,                /* BCME_VERSION */
1670         -EIO,                   /* BCME_TXFAIL */
1671         -EIO,                   /* BCME_RXFAIL */
1672         -EINVAL,                /* BCME_NODEVICE */
1673         -EINVAL,                /* BCME_NMODE_DISABLED */
1674         -ENODATA,               /* BCME_NONRESIDENT */
1675 };
1676
1677 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1678 {
1679         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1680         dhd_ioctl_t ioc;
1681         int bcmerror = 0;
1682         int buflen = 0;
1683         void *buf = NULL;
1684         uint driver = 0;
1685         int ifidx;
1686         bool is_set_key_cmd;
1687
1688         ifidx = dhd_net2idx(dhd, net);
1689         DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1690
1691         if (ifidx == DHD_BAD_IF)
1692                 return -1;
1693
1694 #if defined(CONFIG_WIRELESS_EXT)
1695         /* linux wireless extensions */
1696         if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1697                 /* may recurse, do NOT lock */
1698                 return wl_iw_ioctl(net, ifr, cmd);
1699         }
1700 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
1701
1702         if (cmd == SIOCETHTOOL)
1703                 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1704
1705         if (cmd != SIOCDEVPRIVATE)
1706                 return -EOPNOTSUPP;
1707
1708         memset(&ioc, 0, sizeof(ioc));
1709
1710         /* Copy the ioc control structure part of ioctl request */
1711         if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1712                 bcmerror = -BCME_BADADDR;
1713                 goto done;
1714         }
1715
1716         /* Copy out any buffer passed */
1717         if (ioc.buf) {
1718                 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1719                 /* optimization for direct ioctl calls from kernel */
1720                 /*
1721                    if (segment_eq(get_fs(), KERNEL_DS)) {
1722                    buf = ioc.buf;
1723                    } else {
1724                  */
1725                 {
1726                         buf = kmalloc(buflen, GFP_ATOMIC);
1727                         if (!buf) {
1728                                 bcmerror = -BCME_NOMEM;
1729                                 goto done;
1730                         }
1731                         if (copy_from_user(buf, ioc.buf, buflen)) {
1732                                 bcmerror = -BCME_BADADDR;
1733                                 goto done;
1734                         }
1735                 }
1736         }
1737
1738         /* To differentiate between wl and dhd read 4 more byes */
1739         if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1740                             sizeof(uint)) != 0)) {
1741                 bcmerror = -BCME_BADADDR;
1742                 goto done;
1743         }
1744
1745         if (!capable(CAP_NET_ADMIN)) {
1746                 bcmerror = -BCME_EPERM;
1747                 goto done;
1748         }
1749
1750         /* check for local dhd ioctl and handle it */
1751         if (driver == DHD_IOCTL_MAGIC) {
1752                 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1753                 if (bcmerror)
1754                         dhd->pub.bcmerror = bcmerror;
1755                 goto done;
1756         }
1757
1758         /* send to dongle (must be up, and wl) */
1759         if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1760                 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1761                 bcmerror = BCME_DONGLE_DOWN;
1762                 goto done;
1763         }
1764
1765         if (!dhd->pub.iswl) {
1766                 bcmerror = BCME_DONGLE_DOWN;
1767                 goto done;
1768         }
1769
1770         /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1771          * prevent M4 encryption.
1772          */
1773         is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1774                           ((ioc.cmd == WLC_SET_VAR) &&
1775                            !(strncmp("wsec_key", ioc.buf, 9))) ||
1776                           ((ioc.cmd == WLC_SET_VAR) &&
1777                            !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1778         if (is_set_key_cmd)
1779                 dhd_wait_pend8021x(net);
1780
1781         bcmerror =
1782             dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1783
1784 done:
1785         if (!bcmerror && buf && ioc.buf) {
1786                 if (copy_to_user(ioc.buf, buf, buflen))
1787                         bcmerror = -EFAULT;
1788         }
1789
1790         if (buf)
1791                 kfree(buf);
1792
1793         if (bcmerror > 0)
1794                 bcmerror = 0;
1795         else if (bcmerror < BCME_LAST)
1796                 bcmerror = BCME_ERROR;
1797
1798         return linuxbcmerrormap[-bcmerror];
1799 }
1800
1801 static int dhd_stop(struct net_device *net)
1802 {
1803 #if !defined(IGNORE_ETH0_DOWN)
1804         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1805
1806         DHD_TRACE(("%s: Enter\n", __func__));
1807         if (IS_CFG80211_FAVORITE()) {
1808                 wl_cfg80211_down();
1809         }
1810         if (dhd->pub.up == 0)
1811                 return 0;
1812
1813         /* Set state and stop OS transmissions */
1814         dhd->pub.up = 0;
1815         netif_stop_queue(net);
1816 #else
1817         DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1818                 __func__));
1819 #endif                          /* !defined(IGNORE_ETH0_DOWN) */
1820
1821         return 0;
1822 }
1823
1824 static int dhd_open(struct net_device *net)
1825 {
1826         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1827 #ifdef TOE
1828         u32 toe_ol;
1829 #endif
1830         int ifidx = dhd_net2idx(dhd, net);
1831         s32 ret = 0;
1832
1833         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1834
1835         if (ifidx == 0) {       /* do it only for primary eth0 */
1836
1837                 /* try to bring up bus */
1838                 ret = dhd_bus_start(&dhd->pub);
1839                 if (ret != 0) {
1840                         DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1841                         return -1;
1842                 }
1843                 atomic_set(&dhd->pend_8021x_cnt, 0);
1844
1845                 memcpy(net->dev_addr, dhd->pub.mac, ETH_ALEN);
1846
1847 #ifdef TOE
1848                 /* Get current TOE mode from dongle */
1849                 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1850                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
1851                         dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1852                 else
1853                         dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1854 #endif
1855         }
1856         /* Allow transmit calls */
1857         netif_start_queue(net);
1858         dhd->pub.up = 1;
1859         if (IS_CFG80211_FAVORITE()) {
1860                 if (unlikely(wl_cfg80211_up())) {
1861                         DHD_ERROR(("%s: failed to bring up cfg80211\n",
1862                                    __func__));
1863                         return -1;
1864                 }
1865         }
1866
1867         return ret;
1868 }
1869
1870 struct osl_info *dhd_osl_attach(void *pdev, uint bustype)
1871 {
1872         return osl_attach(pdev, bustype);
1873 }
1874
1875 void dhd_osl_detach(struct osl_info *osh)
1876 {
1877         osl_detach(osh);
1878 }
1879
1880 int
1881 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1882            u8 *mac_addr, u32 flags, u8 bssidx)
1883 {
1884         dhd_if_t *ifp;
1885
1886         DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1887
1888         ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1889
1890         ifp = dhd->iflist[ifidx];
1891         if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1892                 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1893                 return -ENOMEM;
1894         }
1895
1896         memset(ifp, 0, sizeof(dhd_if_t));
1897         ifp->info = dhd;
1898         dhd->iflist[ifidx] = ifp;
1899         strlcpy(ifp->name, name, IFNAMSIZ);
1900         if (mac_addr != NULL)
1901                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
1902
1903         if (handle == NULL) {
1904                 ifp->state = WLC_E_IF_ADD;
1905                 ifp->idx = ifidx;
1906                 ASSERT(dhd->sysioc_tsk);
1907                 up(&dhd->sysioc_sem);
1908         } else
1909                 ifp->net = (struct net_device *)handle;
1910
1911         return 0;
1912 }
1913
1914 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1915 {
1916         dhd_if_t *ifp;
1917
1918         DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1919
1920         ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1921         ifp = dhd->iflist[ifidx];
1922         if (!ifp) {
1923                 DHD_ERROR(("%s: Null interface\n", __func__));
1924                 return;
1925         }
1926
1927         ifp->state = WLC_E_IF_DEL;
1928         ifp->idx = ifidx;
1929         ASSERT(dhd->sysioc_tsk);
1930         up(&dhd->sysioc_sem);
1931 }
1932
1933 dhd_pub_t *dhd_attach(struct osl_info *osh, struct dhd_bus *bus,
1934                         uint bus_hdrlen)
1935 {
1936         dhd_info_t *dhd = NULL;
1937         struct net_device *net;
1938
1939         DHD_TRACE(("%s: Enter\n", __func__));
1940         /* updates firmware nvram path if it was provided as module
1941                  paramters */
1942         if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1943                 strcpy(fw_path, firmware_path);
1944         if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1945                 strcpy(nv_path, nvram_path);
1946
1947         /* Allocate etherdev, including space for private structure */
1948         net = alloc_etherdev(sizeof(dhd));
1949         if (!net) {
1950                 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1951                 goto fail;
1952         }
1953
1954         /* Allocate primary dhd_info */
1955         dhd = kmalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1956         if (!dhd) {
1957                 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1958                 goto fail;
1959         }
1960
1961         memset(dhd, 0, sizeof(dhd_info_t));
1962
1963         /*
1964          * Save the dhd_info into the priv
1965          */
1966         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1967         dhd->pub.osh = osh;
1968
1969         /* Set network interface name if it was provided as module parameter */
1970         if (iface_name[0]) {
1971                 int len;
1972                 char ch;
1973                 strncpy(net->name, iface_name, IFNAMSIZ);
1974                 net->name[IFNAMSIZ - 1] = 0;
1975                 len = strlen(net->name);
1976                 ch = net->name[len - 1];
1977                 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1978                         strcat(net->name, "%d");
1979         }
1980
1981         if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1982             DHD_BAD_IF)
1983                 goto fail;
1984
1985         net->netdev_ops = NULL;
1986         sema_init(&dhd->proto_sem, 1);
1987         /* Initialize other structure content */
1988         init_waitqueue_head(&dhd->ioctl_resp_wait);
1989         init_waitqueue_head(&dhd->ctrl_wait);
1990
1991         /* Initialize the spinlocks */
1992         spin_lock_init(&dhd->sdlock);
1993         spin_lock_init(&dhd->txqlock);
1994
1995         /* Link to info module */
1996         dhd->pub.info = dhd;
1997
1998         /* Link to bus module */
1999         dhd->pub.bus = bus;
2000         dhd->pub.hdrlen = bus_hdrlen;
2001
2002         /* Attach and link in the protocol */
2003         if (dhd_prot_attach(&dhd->pub) != 0) {
2004                 DHD_ERROR(("dhd_prot_attach failed\n"));
2005                 goto fail;
2006         }
2007 #if defined(CONFIG_WIRELESS_EXT)
2008         /* Attach and link in the iw */
2009         if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
2010                 DHD_ERROR(("wl_iw_attach failed\n"));
2011                 goto fail;
2012         }
2013 #endif  /* defined(CONFIG_WIRELESS_EXT) */
2014
2015         /* Attach and link in the cfg80211 */
2016         if (IS_CFG80211_FAVORITE()) {
2017                 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
2018                         DHD_ERROR(("wl_cfg80211_attach failed\n"));
2019                         goto fail;
2020                 }
2021                 if (!NO_FW_REQ()) {
2022                         strcpy(fw_path, wl_cfg80211_get_fwname());
2023                         strcpy(nv_path, wl_cfg80211_get_nvramname());
2024                 }
2025                 wl_cfg80211_dbg_level(DBG_CFG80211_GET());
2026         }
2027
2028         /* Set up the watchdog timer */
2029         init_timer(&dhd->timer);
2030         dhd->timer.data = (unsigned long) dhd;
2031         dhd->timer.function = dhd_watchdog;
2032
2033         /* Initialize thread based operation and lock */
2034         sema_init(&dhd->sdsem, 1);
2035         if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
2036                 dhd->threads_only = true;
2037         else
2038                 dhd->threads_only = false;
2039
2040         if (dhd_dpc_prio >= 0) {
2041                 /* Initialize watchdog thread */
2042                 sema_init(&dhd->watchdog_sem, 0);
2043                 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
2044                                                 "dhd_watchdog");
2045                 if (IS_ERR(dhd->watchdog_tsk)) {
2046                         printk(KERN_WARNING
2047                                 "dhd_watchdog thread failed to start\n");
2048                         dhd->watchdog_tsk = NULL;
2049                 }
2050         } else {
2051                 dhd->watchdog_tsk = NULL;
2052         }
2053
2054         /* Set up the bottom half handler */
2055         if (dhd_dpc_prio >= 0) {
2056                 /* Initialize DPC thread */
2057                 sema_init(&dhd->dpc_sem, 0);
2058                 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
2059                 if (IS_ERR(dhd->dpc_tsk)) {
2060                         printk(KERN_WARNING
2061                                 "dhd_dpc thread failed to start\n");
2062                         dhd->dpc_tsk = NULL;
2063                 }
2064         } else {
2065                 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
2066                 dhd->dpc_tsk = NULL;
2067         }
2068
2069         if (dhd_sysioc) {
2070                 sema_init(&dhd->sysioc_sem, 0);
2071                 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
2072                                                 "_dhd_sysioc");
2073                 if (IS_ERR(dhd->sysioc_tsk)) {
2074                         printk(KERN_WARNING
2075                                 "_dhd_sysioc thread failed to start\n");
2076                         dhd->sysioc_tsk = NULL;
2077                 }
2078         } else
2079                 dhd->sysioc_tsk = NULL;
2080
2081         /*
2082          * Save the dhd_info into the priv
2083          */
2084         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2085
2086 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2087         g_bus = bus;
2088 #endif
2089 #if defined(CONFIG_PM_SLEEP)
2090         register_pm_notifier(&dhd_sleep_pm_notifier);
2091 #endif  /* defined(CONFIG_PM_SLEEP) */
2092         /* && defined(DHD_GPL) */
2093         /* Init lock suspend to prevent kernel going to suspend */
2094 #ifdef CONFIG_HAS_EARLYSUSPEND
2095         dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
2096         dhd->early_suspend.suspend = dhd_early_suspend;
2097         dhd->early_suspend.resume = dhd_late_resume;
2098         register_early_suspend(&dhd->early_suspend);
2099 #endif
2100
2101         return &dhd->pub;
2102
2103 fail:
2104         if (net)
2105                 free_netdev(net);
2106         if (dhd)
2107                 dhd_detach(&dhd->pub);
2108
2109         return NULL;
2110 }
2111
2112 int dhd_bus_start(dhd_pub_t *dhdp)
2113 {
2114         int ret = -1;
2115         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2116 #ifdef EMBEDDED_PLATFORM
2117         char iovbuf[WL_EVENTING_MASK_LEN + 12]; /*  Room for "event_msgs" +
2118                                                  '\0' + bitvec  */
2119 #endif                          /* EMBEDDED_PLATFORM */
2120
2121         ASSERT(dhd);
2122
2123         DHD_TRACE(("%s:\n", __func__));
2124
2125         /* try to download image and nvram to the dongle */
2126         if (dhd->pub.busstate == DHD_BUS_DOWN) {
2127                 if (!(dhd_bus_download_firmware(dhd->pub.bus, dhd->pub.osh,
2128                                                 fw_path, nv_path))) {
2129                         DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2130                                 "firmware = %s nvram = %s\n",
2131                                 __func__, fw_path, nv_path));
2132                         return -1;
2133                 }
2134         }
2135
2136         /* Start the watchdog timer */
2137         dhd->pub.tickcnt = 0;
2138         dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2139
2140         /* Bring up the bus */
2141         ret = dhd_bus_init(&dhd->pub, true);
2142         if (ret != 0) {
2143                 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2144                 return ret;
2145         }
2146 #if defined(OOB_INTR_ONLY)
2147         /* Host registration for OOB interrupt */
2148         if (bcmsdh_register_oob_intr(dhdp)) {
2149                 del_timer_sync(&dhd->timer);
2150                 dhd->wd_timer_valid = false;
2151                 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2152                 return -ENODEV;
2153         }
2154
2155         /* Enable oob at firmware */
2156         dhd_enable_oob_intr(dhd->pub.bus, true);
2157 #endif                          /* defined(OOB_INTR_ONLY) */
2158
2159         /* If bus is not ready, can't come up */
2160         if (dhd->pub.busstate != DHD_BUS_DATA) {
2161                 del_timer_sync(&dhd->timer);
2162                 dhd->wd_timer_valid = false;
2163                 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2164                 return -ENODEV;
2165         }
2166 #ifdef EMBEDDED_PLATFORM
2167         bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
2168                     sizeof(iovbuf));
2169         dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2170         memcpy(dhdp->eventmask, iovbuf, WL_EVENTING_MASK_LEN);
2171
2172         setbit(dhdp->eventmask, WLC_E_SET_SSID);
2173         setbit(dhdp->eventmask, WLC_E_PRUNE);
2174         setbit(dhdp->eventmask, WLC_E_AUTH);
2175         setbit(dhdp->eventmask, WLC_E_REASSOC);
2176         setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2177         setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2178         setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2179         setbit(dhdp->eventmask, WLC_E_DISASSOC);
2180         setbit(dhdp->eventmask, WLC_E_JOIN);
2181         setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2182         setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2183         setbit(dhdp->eventmask, WLC_E_LINK);
2184         setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2185         setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2186         setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2187         setbit(dhdp->eventmask, WLC_E_TXFAIL);
2188         setbit(dhdp->eventmask, WLC_E_JOIN_START);
2189         setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2190 #ifdef PNO_SUPPORT
2191         setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2192 #endif                          /* PNO_SUPPORT */
2193
2194 /* enable dongle roaming event */
2195
2196         dhdp->pktfilter_count = 1;
2197         /* Setup filter to allow only unicast */
2198         dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2199 #endif                          /* EMBEDDED_PLATFORM */
2200
2201         /* Bus is ready, do any protocol initialization */
2202         ret = dhd_prot_init(&dhd->pub);
2203         if (ret < 0)
2204                 return ret;
2205
2206         return 0;
2207 }
2208
2209 int
2210 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2211           int set)
2212 {
2213         char buf[strlen(name) + 1 + cmd_len];
2214         int len = sizeof(buf);
2215         wl_ioctl_t ioc;
2216         int ret;
2217
2218         len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);
2219
2220         memset(&ioc, 0, sizeof(ioc));
2221
2222         ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2223         ioc.buf = buf;
2224         ioc.len = len;
2225         ioc.set = set;
2226
2227         ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2228         if (!set && ret >= 0)
2229                 memcpy(cmd_buf, buf, cmd_len);
2230
2231         return ret;
2232 }
2233
2234 static struct net_device_ops dhd_ops_pri = {
2235         .ndo_open = dhd_open,
2236         .ndo_stop = dhd_stop,
2237         .ndo_get_stats = dhd_get_stats,
2238         .ndo_do_ioctl = dhd_ioctl_entry,
2239         .ndo_start_xmit = dhd_start_xmit,
2240         .ndo_set_mac_address = dhd_set_mac_address,
2241         .ndo_set_multicast_list = dhd_set_multicast_list
2242 };
2243
2244 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2245 {
2246         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2247         struct net_device *net;
2248         u8 temp_addr[ETH_ALEN] = {
2249                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2250
2251         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2252
2253         ASSERT(dhd && dhd->iflist[ifidx]);
2254
2255         net = dhd->iflist[ifidx]->net;
2256         ASSERT(net);
2257
2258         ASSERT(!net->netdev_ops);
2259         net->netdev_ops = &dhd_ops_pri;
2260
2261         /*
2262          * We have to use the primary MAC for virtual interfaces
2263          */
2264         if (ifidx != 0) {
2265                 /* for virtual interfaces use the primary MAC  */
2266                 memcpy(temp_addr, dhd->pub.mac, ETH_ALEN);
2267
2268         }
2269
2270         if (ifidx == 1) {
2271                 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2272                 /*  ACCESSPOINT INTERFACE CASE */
2273                 temp_addr[0] |= 0X02;   /* set bit 2 ,
2274                          - Locally Administered address  */
2275
2276         }
2277         net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2278         net->ethtool_ops = &dhd_ethtool_ops;
2279
2280 #if defined(CONFIG_WIRELESS_EXT)
2281         if (!IS_CFG80211_FAVORITE()) {
2282 #if WIRELESS_EXT < 19
2283                 net->get_wireless_stats = dhd_get_wireless_stats;
2284 #endif                          /* WIRELESS_EXT < 19 */
2285 #if WIRELESS_EXT > 12
2286                 net->wireless_handlers =
2287                     (struct iw_handler_def *)&wl_iw_handler_def;
2288 #endif                          /* WIRELESS_EXT > 12 */
2289         }
2290 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
2291
2292         dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2293
2294         memcpy(net->dev_addr, temp_addr, ETH_ALEN);
2295
2296         if (register_netdev(net) != 0) {
2297                 DHD_ERROR(("%s: couldn't register the net device\n",
2298                         __func__));
2299                 goto fail;
2300         }
2301
2302         DHD_INFO(("%s: Broadcom Dongle Host Driver\n", net->name));
2303
2304         return 0;
2305
2306 fail:
2307         net->netdev_ops = NULL;
2308         return BCME_ERROR;
2309 }
2310
2311 void dhd_bus_detach(dhd_pub_t *dhdp)
2312 {
2313         dhd_info_t *dhd;
2314
2315         DHD_TRACE(("%s: Enter\n", __func__));
2316
2317         if (dhdp) {
2318                 dhd = (dhd_info_t *) dhdp->info;
2319                 if (dhd) {
2320                         /* Stop the protocol module */
2321                         dhd_prot_stop(&dhd->pub);
2322
2323                         /* Stop the bus module */
2324                         dhd_bus_stop(dhd->pub.bus, true);
2325 #if defined(OOB_INTR_ONLY)
2326                         bcmsdh_unregister_oob_intr();
2327 #endif                          /* defined(OOB_INTR_ONLY) */
2328
2329                         /* Clear the watchdog timer */
2330                         del_timer_sync(&dhd->timer);
2331                         dhd->wd_timer_valid = false;
2332                 }
2333         }
2334 }
2335
2336 void dhd_detach(dhd_pub_t *dhdp)
2337 {
2338         dhd_info_t *dhd;
2339
2340         DHD_TRACE(("%s: Enter\n", __func__));
2341
2342         if (dhdp) {
2343                 dhd = (dhd_info_t *) dhdp->info;
2344                 if (dhd) {
2345                         dhd_if_t *ifp;
2346                         int i;
2347
2348 #if defined(CONFIG_HAS_EARLYSUSPEND)
2349                         if (dhd->early_suspend.suspend)
2350                                 unregister_early_suspend(&dhd->early_suspend);
2351 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2352
2353                         for (i = 1; i < DHD_MAX_IFS; i++)
2354                                 if (dhd->iflist[i])
2355                                         dhd_del_if(dhd, i);
2356
2357                         ifp = dhd->iflist[0];
2358                         ASSERT(ifp);
2359                         if (ifp->net->netdev_ops == &dhd_ops_pri) {
2360                                 dhd_stop(ifp->net);
2361                                 unregister_netdev(ifp->net);
2362                         }
2363
2364                         if (dhd->watchdog_tsk) {
2365                                 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2366                                 kthread_stop(dhd->watchdog_tsk);
2367                                 dhd->watchdog_tsk = NULL;
2368                         }
2369
2370                         if (dhd->dpc_tsk) {
2371                                 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2372                                 kthread_stop(dhd->dpc_tsk);
2373                                 dhd->dpc_tsk = NULL;
2374                         } else
2375                                 tasklet_kill(&dhd->tasklet);
2376
2377                         if (dhd->sysioc_tsk) {
2378                                 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2379                                 kthread_stop(dhd->sysioc_tsk);
2380                                 dhd->sysioc_tsk = NULL;
2381                         }
2382
2383                         dhd_bus_detach(dhdp);
2384
2385                         if (dhdp->prot)
2386                                 dhd_prot_detach(dhdp);
2387
2388 #if defined(CONFIG_WIRELESS_EXT)
2389                         wl_iw_detach();
2390 #endif                          /* (CONFIG_WIRELESS_EXT) */
2391
2392                         if (IS_CFG80211_FAVORITE())
2393                                 wl_cfg80211_detach();
2394
2395 #if defined(CONFIG_PM_SLEEP)
2396                         unregister_pm_notifier(&dhd_sleep_pm_notifier);
2397 #endif  /* defined(CONFIG_PM_SLEEP) */
2398                         /* && defined(DHD_GPL) */
2399                         free_netdev(ifp->net);
2400                         kfree(ifp);
2401                         kfree(dhd);
2402                 }
2403         }
2404 }
2405
2406 static void __exit dhd_module_cleanup(void)
2407 {
2408         DHD_TRACE(("%s: Enter\n", __func__));
2409
2410         dhd_bus_unregister();
2411 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2412         wifi_del_dev();
2413 #endif
2414         /* Call customer gpio to turn off power with WL_REG_ON signal */
2415         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2416 }
2417
2418 static int __init dhd_module_init(void)
2419 {
2420         int error;
2421
2422         DHD_TRACE(("%s: Enter\n", __func__));
2423
2424         /* Sanity check on the module parameters */
2425         do {
2426                 /* Both watchdog and DPC as tasklets are ok */
2427                 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2428                         break;
2429
2430                 /* If both watchdog and DPC are threads, TX must be deferred */
2431                 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2432                     && dhd_deferred_tx)
2433                         break;
2434
2435                 DHD_ERROR(("Invalid module parameters.\n"));
2436                 return -EINVAL;
2437         } while (0);
2438         /* Call customer gpio to turn on power with WL_REG_ON signal */
2439         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2440
2441 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2442         sema_init(&wifi_control_sem, 0);
2443
2444         error = wifi_add_dev();
2445         if (error) {
2446                 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2447                 goto failed;
2448         }
2449
2450         /* Waiting callback after platform_driver_register is done or
2451                  exit with error */
2452         if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2453                 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2454                         __func__);
2455                 /* remove device */
2456                 wifi_del_dev();
2457                 goto failed;
2458         }
2459 #endif  /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2460
2461         error = dhd_bus_register();
2462
2463         if (error) {
2464                 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2465                 goto failed;
2466         }
2467         return error;
2468
2469 failed:
2470         /* turn off power and exit */
2471         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2472         return -EINVAL;
2473 }
2474
2475 module_init(dhd_module_init);
2476 module_exit(dhd_module_cleanup);
2477
2478 /*
2479  * OS specific functions required to implement DHD driver in OS independent way
2480  */
2481 int dhd_os_proto_block(dhd_pub_t *pub)
2482 {
2483         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2484
2485         if (dhd) {
2486                 down(&dhd->proto_sem);
2487                 return 1;
2488         }
2489         return 0;
2490 }
2491
2492 int dhd_os_proto_unblock(dhd_pub_t *pub)
2493 {
2494         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2495
2496         if (dhd) {
2497                 up(&dhd->proto_sem);
2498                 return 1;
2499         }
2500
2501         return 0;
2502 }
2503
2504 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2505 {
2506         return (unsigned int)dhd_ioctl_timeout_msec;
2507 }
2508
2509 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2510 {
2511         dhd_ioctl_timeout_msec = (int)timeout_msec;
2512 }
2513
2514 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2515 {
2516         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2517         DECLARE_WAITQUEUE(wait, current);
2518         int timeout = dhd_ioctl_timeout_msec;
2519
2520         /* Convert timeout in millsecond to jiffies */
2521         timeout = timeout * HZ / 1000;
2522
2523         /* Wait until control frame is available */
2524         add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2525         set_current_state(TASK_INTERRUPTIBLE);
2526
2527         while (!(*condition) && (!signal_pending(current) && timeout))
2528                 timeout = schedule_timeout(timeout);
2529
2530         if (signal_pending(current))
2531                 *pending = true;
2532
2533         set_current_state(TASK_RUNNING);
2534         remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2535
2536         return timeout;
2537 }
2538
2539 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2540 {
2541         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2542
2543         if (waitqueue_active(&dhd->ioctl_resp_wait))
2544                 wake_up_interruptible(&dhd->ioctl_resp_wait);
2545
2546         return 0;
2547 }
2548
2549 void dhd_os_wd_timer(void *bus, uint wdtick)
2550 {
2551         dhd_pub_t *pub = bus;
2552         static uint save_dhd_watchdog_ms;
2553         dhd_info_t *dhd = (dhd_info_t *) pub->info;
2554
2555         /* don't start the wd until fw is loaded */
2556         if (pub->busstate == DHD_BUS_DOWN)
2557                 return;
2558
2559         /* Totally stop the timer */
2560         if (!wdtick && dhd->wd_timer_valid == true) {
2561                 del_timer_sync(&dhd->timer);
2562                 dhd->wd_timer_valid = false;
2563                 save_dhd_watchdog_ms = wdtick;
2564                 return;
2565         }
2566
2567         if (wdtick) {
2568                 dhd_watchdog_ms = (uint) wdtick;
2569
2570                 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2571
2572                         if (dhd->wd_timer_valid == true)
2573                                 /* Stop timer and restart at new value */
2574                                 del_timer_sync(&dhd->timer);
2575
2576                         /* Create timer again when watchdog period is
2577                            dynamically changed or in the first instance
2578                          */
2579                         dhd->timer.expires =
2580                             jiffies + dhd_watchdog_ms * HZ / 1000;
2581                         add_timer(&dhd->timer);
2582
2583                 } else {
2584                         /* Re arm the timer, at last watchdog period */
2585                         mod_timer(&dhd->timer,
2586                                   jiffies + dhd_watchdog_ms * HZ / 1000);
2587                 }
2588
2589                 dhd->wd_timer_valid = true;
2590                 save_dhd_watchdog_ms = wdtick;
2591         }
2592 }
2593
2594 void *dhd_os_open_image(char *filename)
2595 {
2596         struct file *fp;
2597
2598         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2599                 return wl_cfg80211_request_fw(filename);
2600
2601         fp = filp_open(filename, O_RDONLY, 0);
2602         /*
2603          * 2.6.11 (FC4) supports filp_open() but later revs don't?
2604          * Alternative:
2605          * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2606          * ???
2607          */
2608         if (IS_ERR(fp))
2609                 fp = NULL;
2610
2611         return fp;
2612 }
2613
2614 int dhd_os_get_image_block(char *buf, int len, void *image)
2615 {
2616         struct file *fp = (struct file *)image;
2617         int rdlen;
2618
2619         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2620                 return wl_cfg80211_read_fw(buf, len);
2621
2622         if (!image)
2623                 return 0;
2624
2625         rdlen = kernel_read(fp, fp->f_pos, buf, len);
2626         if (rdlen > 0)
2627                 fp->f_pos += rdlen;
2628
2629         return rdlen;
2630 }
2631
2632 void dhd_os_close_image(void *image)
2633 {
2634         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2635                 return wl_cfg80211_release_fw();
2636         if (image)
2637                 filp_close((struct file *)image, NULL);
2638 }
2639
2640 void dhd_os_sdlock(dhd_pub_t *pub)
2641 {
2642         dhd_info_t *dhd;
2643
2644         dhd = (dhd_info_t *) (pub->info);
2645
2646         if (dhd->threads_only)
2647                 down(&dhd->sdsem);
2648         else
2649                 spin_lock_bh(&dhd->sdlock);
2650 }
2651
2652 void dhd_os_sdunlock(dhd_pub_t *pub)
2653 {
2654         dhd_info_t *dhd;
2655
2656         dhd = (dhd_info_t *) (pub->info);
2657
2658         if (dhd->threads_only)
2659                 up(&dhd->sdsem);
2660         else
2661                 spin_unlock_bh(&dhd->sdlock);
2662 }
2663
2664 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2665 {
2666         dhd_info_t *dhd;
2667
2668         dhd = (dhd_info_t *) (pub->info);
2669         spin_lock_bh(&dhd->txqlock);
2670 }
2671
2672 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2673 {
2674         dhd_info_t *dhd;
2675
2676         dhd = (dhd_info_t *) (pub->info);
2677         spin_unlock_bh(&dhd->txqlock);
2678 }
2679
2680 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2681 {
2682 }
2683
2684 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2685 {
2686 }
2687
2688 void dhd_os_sdtxlock(dhd_pub_t *pub)
2689 {
2690         dhd_os_sdlock(pub);
2691 }
2692
2693 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2694 {
2695         dhd_os_sdunlock(pub);
2696 }
2697
2698 #if defined(CONFIG_WIRELESS_EXT)
2699 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev)
2700 {
2701         int res = 0;
2702         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2703
2704         res = wl_iw_get_wireless_stats(dev, &dhd->iw.wstats);
2705
2706         if (res == 0)
2707                 return &dhd->iw.wstats;
2708         else
2709                 return NULL;
2710 }
2711 #endif  /* defined(CONFIG_WIRELESS_EXT) */
2712
2713 static int
2714 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2715                   wl_event_msg_t *event, void **data)
2716 {
2717         int bcmerror = 0;
2718
2719         ASSERT(dhd != NULL);
2720
2721         bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2722         if (bcmerror != BCME_OK)
2723                 return bcmerror;
2724
2725 #if defined(CONFIG_WIRELESS_EXT)
2726         if (!IS_CFG80211_FAVORITE()) {
2727                 if ((dhd->iflist[*ifidx] == NULL)
2728                     || (dhd->iflist[*ifidx]->net == NULL)) {
2729                         DHD_ERROR(("%s Exit null pointer\n", __func__));
2730                         return bcmerror;
2731                 }
2732
2733                 if (dhd->iflist[*ifidx]->net)
2734                         wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2735         }
2736 #endif                          /* defined(CONFIG_WIRELESS_EXT)  */
2737
2738         if (IS_CFG80211_FAVORITE()) {
2739                 ASSERT(dhd->iflist[*ifidx] != NULL);
2740                 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2741                 if (dhd->iflist[*ifidx]->net)
2742                         wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2743                                           *data);
2744         }
2745
2746         return bcmerror;
2747 }
2748
2749 /* send up locally generated event */
2750 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2751 {
2752         switch (ntoh32(event->event_type)) {
2753         default:
2754                 break;
2755         }
2756 }
2757
2758 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2759 {
2760         struct dhd_info *dhdinfo = dhd->info;
2761         dhd_os_sdunlock(dhd);
2762         wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2763                                          (*lockvar == false), HZ * 2);
2764         dhd_os_sdlock(dhd);
2765         return;
2766 }
2767
2768 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2769 {
2770         struct dhd_info *dhdinfo = dhd->info;
2771         if (waitqueue_active(&dhdinfo->ctrl_wait))
2772                 wake_up_interruptible(&dhdinfo->ctrl_wait);
2773         return;
2774 }
2775
2776 int dhd_dev_reset(struct net_device *dev, u8 flag)
2777 {
2778         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2779
2780         /* Turning off watchdog */
2781         if (flag)
2782                 dhd_os_wd_timer(&dhd->pub, 0);
2783
2784         dhd_bus_devreset(&dhd->pub, flag);
2785
2786         /* Turning on watchdog back */
2787         if (!flag)
2788                 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2789         DHD_ERROR(("%s:  WLAN OFF DONE\n", __func__));
2790
2791         return 1;
2792 }
2793
2794 int net_os_set_suspend_disable(struct net_device *dev, int val)
2795 {
2796         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2797         int ret = 0;
2798
2799         if (dhd) {
2800                 ret = dhd->pub.suspend_disable_flag;
2801                 dhd->pub.suspend_disable_flag = val;
2802         }
2803         return ret;
2804 }
2805
2806 int net_os_set_suspend(struct net_device *dev, int val)
2807 {
2808         int ret = 0;
2809 #if defined(CONFIG_HAS_EARLYSUSPEND)
2810         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2811
2812         if (dhd) {
2813                 dhd_os_proto_block(&dhd->pub);
2814                 ret = dhd_set_suspend(val, &dhd->pub);
2815                 dhd_os_proto_unblock(&dhd->pub);
2816         }
2817 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2818         return ret;
2819 }
2820
2821 int net_os_set_dtim_skip(struct net_device *dev, int val)
2822 {
2823         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2824
2825         if (dhd)
2826                 dhd->pub.dtim_skip = val;
2827
2828         return 0;
2829 }
2830
2831 int net_os_set_packet_filter(struct net_device *dev, int val)
2832 {
2833         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2834         int ret = 0;
2835
2836         /* Packet filtering is set only if we still in early-suspend and
2837          * we need either to turn it ON or turn it OFF
2838          * We can always turn it OFF in case of early-suspend, but we turn it
2839          * back ON only if suspend_disable_flag was not set
2840          */
2841         if (dhd && dhd->pub.up) {
2842                 dhd_os_proto_block(&dhd->pub);
2843                 if (dhd->pub.in_suspend) {
2844                         if (!val || (val && !dhd->pub.suspend_disable_flag))
2845                                 dhd_set_packet_filter(val, &dhd->pub);
2846                 }
2847                 dhd_os_proto_unblock(&dhd->pub);
2848         }
2849         return ret;
2850 }
2851
2852 void dhd_dev_init_ioctl(struct net_device *dev)
2853 {
2854         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2855
2856         dhd_preinit_ioctls(&dhd->pub);
2857 }
2858
2859 #ifdef PNO_SUPPORT
2860 /* Linux wrapper to call common dhd_pno_clean */
2861 int dhd_dev_pno_reset(struct net_device *dev)
2862 {
2863         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2864
2865         return dhd_pno_clean(&dhd->pub);
2866 }
2867
2868 /* Linux wrapper to call common dhd_pno_enable */
2869 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2870 {
2871         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2872
2873         return dhd_pno_enable(&dhd->pub, pfn_enabled);
2874 }
2875
2876 /* Linux wrapper to call common dhd_pno_set */
2877 int
2878 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2879                 unsigned char scan_fr)
2880 {
2881         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2882
2883         return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2884 }
2885
2886 /* Linux wrapper to get  pno status */
2887 int dhd_dev_get_pno_status(struct net_device *dev)
2888 {
2889         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2890
2891         return dhd_pno_get_status(&dhd->pub);
2892 }
2893
2894 #endif                          /* PNO_SUPPORT */
2895
2896 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2897 {
2898         return atomic_read(&dhd->pend_8021x_cnt);
2899 }
2900
2901 #define MAX_WAIT_FOR_8021X_TX   10
2902
2903 int dhd_wait_pend8021x(struct net_device *dev)
2904 {
2905         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2906         int timeout = 10 * HZ / 1000;
2907         int ntimes = MAX_WAIT_FOR_8021X_TX;
2908         int pend = dhd_get_pend_8021x_cnt(dhd);
2909
2910         while (ntimes && pend) {
2911                 if (pend) {
2912                         set_current_state(TASK_INTERRUPTIBLE);
2913                         schedule_timeout(timeout);
2914                         set_current_state(TASK_RUNNING);
2915                         ntimes--;
2916                 }
2917                 pend = dhd_get_pend_8021x_cnt(dhd);
2918         }
2919         return pend;
2920 }
2921
2922 #ifdef DHD_DEBUG
2923 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2924 {
2925         int ret = 0;
2926         struct file *fp;
2927         mm_segment_t old_fs;
2928         loff_t pos = 0;
2929
2930         /* change to KERNEL_DS address limit */
2931         old_fs = get_fs();
2932         set_fs(KERNEL_DS);
2933
2934         /* open file to write */
2935         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2936         if (!fp) {
2937                 DHD_ERROR(("%s: open file error\n", __func__));
2938                 ret = -1;
2939                 goto exit;
2940         }
2941
2942         /* Write buf to file */
2943         fp->f_op->write(fp, buf, size, &pos);
2944
2945 exit:
2946         /* free buf before return */
2947         kfree(buf);
2948         /* close file before return */
2949         if (fp)
2950                 filp_close(fp, current->files);
2951         /* restore previous address limit */
2952         set_fs(old_fs);
2953
2954         return ret;
2955 }
2956 #endif                          /* DHD_DEBUG */