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 <proto/ethernet.h>
  40 #include <dngl_stats.h>
  41 #include <dhd.h>
  42 #include <dhd_bus.h>
  43 #include <dhd_proto.h>
  44 #include <dhd_dbg.h>
  45
  46 #include <wl_cfg80211.h>
  47
  48 #define EPI_VERSION_STR         "4.218.248.5"
  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 = "bcm4329_wlan",
 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[ETHER_ADDR_LEN];    /* 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         struct ether_addr macvalue;
 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 static char dhd_version[] = "Dongle Host Driver, version " EPI_VERSION_STR
 391 #ifdef DHD_DEBUG
 392 "\nCompiled in " " on " __DATE__ " at " __TIME__
 393 #endif
 394 ;
 395
 396 #if defined(CONFIG_WIRELESS_EXT)
 397 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev);
 398 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
 399
 400 static void dhd_dpc(unsigned long data);
 401 /* forward decl */
 402 extern int dhd_wait_pend8021x(struct net_device *dev);
 403
 404 #ifdef TOE
 405 #ifndef BDC
 406 #error TOE requires BDC
 407 #endif                          /* !BDC */
 408 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
 409 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
 410 #endif                          /* TOE */
 411
 412 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
 413                              wl_event_msg_t *event_ptr, void **data_ptr);
 414
 415 #if defined(CONFIG_PM_SLEEP)
 416 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
 417                                  unsigned long action, void *ignored)
 418 {
 419         switch (action) {
 420         case PM_HIBERNATION_PREPARE:
 421         case PM_SUSPEND_PREPARE:
 422                 dhd_mmc_suspend = true;
 423                 return NOTIFY_OK;
 424         case PM_POST_HIBERNATION:
 425         case PM_POST_SUSPEND:
 426                 dhd_mmc_suspend = false;
 427                 return NOTIFY_OK;
 428         }
 429         return 0;
 430 }
 431
 432 static struct notifier_block dhd_sleep_pm_notifier = {
 433         .notifier_call = dhd_sleep_pm_callback,
 434         .priority = 0
 435 };
 436
 437 extern int register_pm_notifier(struct notifier_block *nb);
 438 extern int unregister_pm_notifier(struct notifier_block *nb);
 439 #endif  /* defined(CONFIG_PM_SLEEP) */
 440         /* && defined(DHD_GPL) */
 441 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
 442 {
 443 #ifdef PKT_FILTER_SUPPORT
 444         DHD_TRACE(("%s: %d\n", __func__, value));
 445         /* 1 - Enable packet filter, only allow unicast packet to send up */
 446         /* 0 - Disable packet filter */
 447         if (dhd_pkt_filter_enable) {
 448                 int i;
 449
 450                 for (i = 0; i < dhd->pktfilter_count; i++) {
 451                         dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
 452                         dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
 453                                                      value, dhd_master_mode);
 454                 }
 455         }
 456 #endif
 457 }
 458
 459 #if defined(CONFIG_HAS_EARLYSUSPEND)
 460 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
 461 {
 462         int power_mode = PM_MAX;
 463         /* wl_pkt_filter_enable_t       enable_parm; */
 464         char iovbuf[32];
 465         int bcn_li_dtim = 3;
 466 #ifdef CUSTOMER_HW2
 467         uint roamvar = 1;
 468 #endif                          /* CUSTOMER_HW2 */
 469
 470         DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
 471                    __func__, value, dhd->in_suspend));
 472
 473         if (dhd && dhd->up) {
 474                 if (value && dhd->in_suspend) {
 475
 476                         /* Kernel suspended */
 477                         DHD_TRACE(("%s: force extra Suspend setting\n",
 478                                    __func__));
 479
 480                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 481                                          (char *)&power_mode,
 482                                          sizeof(power_mode));
 483
 484                         /* Enable packet filter, only allow unicast
 485                                  packet to send up */
 486                         dhd_set_packet_filter(1, dhd);
 487
 488                         /* if dtim skip setup as default force it
 489                          * to wake each thrid dtim
 490                          * for better power saving.
 491                          * Note that side effect is chance to miss BC/MC
 492                          * packet
 493                          */
 494                         if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
 495                                 bcn_li_dtim = 3;
 496                         else
 497                                 bcn_li_dtim = dhd->dtim_skip;
 498                         bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
 499                                     4, iovbuf, sizeof(iovbuf));
 500                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 501                                          sizeof(iovbuf));
 502 #ifdef CUSTOMER_HW2
 503                         /* Disable build-in roaming to allowed \
 504                          * supplicant to take of romaing
 505                          */
 506                         bcm_mkiovar("roam_off", (char *)&roamvar, 4,
 507                                     iovbuf, sizeof(iovbuf));
 508                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 509                                          sizeof(iovbuf));
 510 #endif                          /* CUSTOMER_HW2 */
 511                 } else {
 512
 513                         /* Kernel resumed  */
 514                         DHD_TRACE(("%s: Remove extra suspend setting\n",
 515                                    __func__));
 516
 517                         power_mode = PM_FAST;
 518                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 519                                          (char *)&power_mode,
 520                                          sizeof(power_mode));
 521
 522                         /* disable pkt filter */
 523                         dhd_set_packet_filter(0, dhd);
 524
 525                         /* restore pre-suspend setting for dtim_skip */
 526                         bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
 527                                     4, iovbuf, sizeof(iovbuf));
 528
 529                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 530                                          sizeof(iovbuf));
 531 #ifdef CUSTOMER_HW2
 532                         roamvar = 0;
 533                         bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
 534                                     sizeof(iovbuf));
 535                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 536                                          sizeof(iovbuf));
 537 #endif                          /* CUSTOMER_HW2 */
 538                 }
 539         }
 540
 541         return 0;
 542 }
 543
 544 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
 545 {
 546         dhd_pub_t *dhdp = &dhd->pub;
 547
 548         dhd_os_proto_block(dhdp);
 549         /* Set flag when early suspend was called */
 550         dhdp->in_suspend = val;
 551         if (!dhdp->suspend_disable_flag)
 552                 dhd_set_suspend(val, dhdp);
 553         dhd_os_proto_unblock(dhdp);
 554 }
 555
 556 static void dhd_early_suspend(struct early_suspend *h)
 557 {
 558         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 559
 560         DHD_TRACE(("%s: enter\n", __func__));
 561
 562         if (dhd)
 563                 dhd_suspend_resume_helper(dhd, 1);
 564
 565 }
 566
 567 static void dhd_late_resume(struct early_suspend *h)
 568 {
 569         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 570
 571         DHD_TRACE(("%s: enter\n", __func__));
 572
 573         if (dhd)
 574                 dhd_suspend_resume_helper(dhd, 0);
 575 }
 576 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 577
 578 /*
 579  * Generalized timeout mechanism.  Uses spin sleep with exponential
 580  * back-off until
 581  * the sleep time reaches one jiffy, then switches over to task delay.  Usage:
 582  *
 583  *      dhd_timeout_start(&tmo, usec);
 584  *      while (!dhd_timeout_expired(&tmo))
 585  *              if (poll_something())
 586  *                      break;
 587  *      if (dhd_timeout_expired(&tmo))
 588  *              fatal();
 589  */
 590
 591 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
 592 {
 593         tmo->limit = usec;
 594         tmo->increment = 0;
 595         tmo->elapsed = 0;
 596         tmo->tick = 1000000 / HZ;
 597 }
 598
 599 int dhd_timeout_expired(dhd_timeout_t *tmo)
 600 {
 601         /* Does nothing the first call */
 602         if (tmo->increment == 0) {
 603                 tmo->increment = 1;
 604                 return 0;
 605         }
 606
 607         if (tmo->elapsed >= tmo->limit)
 608                 return 1;
 609
 610         /* Add the delay that's about to take place */
 611         tmo->elapsed += tmo->increment;
 612
 613         if (tmo->increment < tmo->tick) {
 614                 udelay(tmo->increment);
 615                 tmo->increment *= 2;
 616                 if (tmo->increment > tmo->tick)
 617                         tmo->increment = tmo->tick;
 618         } else {
 619                 wait_queue_head_t delay_wait;
 620                 DECLARE_WAITQUEUE(wait, current);
 621                 int pending;
 622                 init_waitqueue_head(&delay_wait);
 623                 add_wait_queue(&delay_wait, &wait);
 624                 set_current_state(TASK_INTERRUPTIBLE);
 625                 schedule_timeout(1);
 626                 pending = signal_pending(current);
 627                 remove_wait_queue(&delay_wait, &wait);
 628                 set_current_state(TASK_RUNNING);
 629                 if (pending)
 630                         return 1;       /* Interrupted */
 631         }
 632
 633         return 0;
 634 }
 635
 636 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
 637 {
 638         int i = 0;
 639
 640         ASSERT(dhd);
 641         while (i < DHD_MAX_IFS) {
 642                 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
 643                         return i;
 644                 i++;
 645         }
 646
 647         return DHD_BAD_IF;
 648 }
 649
 650 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
 651 {
 652         int i = DHD_MAX_IFS;
 653
 654         ASSERT(dhd);
 655
 656         if (name == NULL || *name == '\0')
 657                 return 0;
 658
 659         while (--i > 0)
 660                 if (dhd->iflist[i]
 661                     && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
 662                         break;
 663
 664         DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
 665
 666         return i;               /* default - the primary interface */
 667 }
 668
 669 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
 670 {
 671         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
 672
 673         ASSERT(dhd);
 674
 675         if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
 676                 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
 677                 return "<if_bad>";
 678         }
 679
 680         if (dhd->iflist[ifidx] == NULL) {
 681                 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
 682                 return "<if_null>";
 683         }
 684
 685         if (dhd->iflist[ifidx]->net)
 686                 return dhd->iflist[ifidx]->net->name;
 687
 688         return "<if_none>";
 689 }
 690
 691 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
 692 {
 693         struct net_device *dev;
 694         struct netdev_hw_addr *ha;
 695         u32 allmulti, cnt;
 696
 697         wl_ioctl_t ioc;
 698         char *buf, *bufp;
 699         uint buflen;
 700         int ret;
 701
 702         ASSERT(dhd && dhd->iflist[ifidx]);
 703         dev = dhd->iflist[ifidx]->net;
 704         cnt = netdev_mc_count(dev);
 705
 706         /* Determine initial value of allmulti flag */
 707         allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
 708
 709         /* Send down the multicast list first. */
 710
 711         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETHER_ADDR_LEN);
 712         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 713         if (!bufp) {
 714                 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
 715                            dhd_ifname(&dhd->pub, ifidx), cnt));
 716                 return;
 717         }
 718
 719         strcpy(bufp, "mcast_list");
 720         bufp += strlen("mcast_list") + 1;
 721
 722         cnt = htol32(cnt);
 723         memcpy(bufp, &cnt, sizeof(cnt));
 724         bufp += sizeof(cnt);
 725
 726         netdev_for_each_mc_addr(ha, dev) {
 727                 if (!cnt)
 728                         break;
 729                 memcpy(bufp, ha->addr, ETHER_ADDR_LEN);
 730                 bufp += ETHER_ADDR_LEN;
 731                 cnt--;
 732         }
 733
 734         memset(&ioc, 0, sizeof(ioc));
 735         ioc.cmd = WLC_SET_VAR;
 736         ioc.buf = buf;
 737         ioc.len = buflen;
 738         ioc.set = true;
 739
 740         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 741         if (ret < 0) {
 742                 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
 743                            dhd_ifname(&dhd->pub, ifidx), cnt));
 744                 allmulti = cnt ? true : allmulti;
 745         }
 746
 747         kfree(buf);
 748
 749         /* Now send the allmulti setting.  This is based on the setting in the
 750          * net_device flags, but might be modified above to be turned on if we
 751          * were trying to set some addresses and dongle rejected it...
 752          */
 753
 754         buflen = sizeof("allmulti") + sizeof(allmulti);
 755         buf = kmalloc(buflen, GFP_ATOMIC);
 756         if (!buf) {
 757                 DHD_ERROR(("%s: out of memory for allmulti\n",
 758                            dhd_ifname(&dhd->pub, ifidx)));
 759                 return;
 760         }
 761         allmulti = htol32(allmulti);
 762
 763         if (!bcm_mkiovar
 764             ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
 765                 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
 766                         "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
 767                         (int)sizeof(allmulti), buflen));
 768                 kfree(buf);
 769                 return;
 770         }
 771
 772         memset(&ioc, 0, sizeof(ioc));
 773         ioc.cmd = WLC_SET_VAR;
 774         ioc.buf = buf;
 775         ioc.len = buflen;
 776         ioc.set = true;
 777
 778         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 779         if (ret < 0) {
 780                 DHD_ERROR(("%s: set allmulti %d failed\n",
 781                            dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
 782         }
 783
 784         kfree(buf);
 785
 786         /* Finally, pick up the PROMISC flag as well, like the NIC
 787                  driver does */
 788
 789         allmulti = (dev->flags & IFF_PROMISC) ? true : false;
 790         allmulti = htol32(allmulti);
 791
 792         memset(&ioc, 0, sizeof(ioc));
 793         ioc.cmd = WLC_SET_PROMISC;
 794         ioc.buf = &allmulti;
 795         ioc.len = sizeof(allmulti);
 796         ioc.set = true;
 797
 798         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 799         if (ret < 0) {
 800                 DHD_ERROR(("%s: set promisc %d failed\n",
 801                            dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
 802         }
 803 }
 804
 805 static int
 806 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, struct ether_addr *addr)
 807 {
 808         char buf[32];
 809         wl_ioctl_t ioc;
 810         int ret;
 811
 812         DHD_TRACE(("%s enter\n", __func__));
 813         if (!bcm_mkiovar
 814             ("cur_etheraddr", (char *)addr, ETHER_ADDR_LEN, buf, 32)) {
 815                 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
 816                            dhd_ifname(&dhd->pub, ifidx)));
 817                 return -1;
 818         }
 819         memset(&ioc, 0, sizeof(ioc));
 820         ioc.cmd = WLC_SET_VAR;
 821         ioc.buf = buf;
 822         ioc.len = 32;
 823         ioc.set = true;
 824
 825         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 826         if (ret < 0) {
 827                 DHD_ERROR(("%s: set cur_etheraddr failed\n",
 828                            dhd_ifname(&dhd->pub, ifidx)));
 829         } else {
 830                 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETHER_ADDR_LEN);
 831         }
 832
 833         return ret;
 834 }
 835
 836 #ifdef SOFTAP
 837 extern struct net_device *ap_net_dev;
 838 #endif
 839
 840 static void dhd_op_if(dhd_if_t *ifp)
 841 {
 842         dhd_info_t *dhd;
 843         int ret = 0, err = 0;
 844
 845         ASSERT(ifp && ifp->info && ifp->idx);   /* Virtual interfaces only */
 846
 847         dhd = ifp->info;
 848
 849         DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
 850
 851         switch (ifp->state) {
 852         case WLC_E_IF_ADD:
 853                 /*
 854                  * Delete the existing interface before overwriting it
 855                  * in case we missed the WLC_E_IF_DEL event.
 856                  */
 857                 if (ifp->net != NULL) {
 858                         DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
 859                         "try free & unregister\n",
 860                         __func__, ifp->net->name));
 861                         netif_stop_queue(ifp->net);
 862                         unregister_netdev(ifp->net);
 863                         free_netdev(ifp->net);
 864                 }
 865                 /* Allocate etherdev, including space for private structure */
 866                 ifp->net = alloc_etherdev(sizeof(dhd));
 867                 if (!ifp->net) {
 868                         DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
 869                         ret = -ENOMEM;
 870                 }
 871                 if (ret == 0) {
 872                         strcpy(ifp->net->name, ifp->name);
 873                         memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
 874                         err = dhd_net_attach(&dhd->pub, ifp->idx);
 875                         if (err != 0) {
 876                                 DHD_ERROR(("%s: dhd_net_attach failed, "
 877                                         "err %d\n",
 878                                         __func__, err));
 879                                 ret = -EOPNOTSUPP;
 880                         } else {
 881 #ifdef SOFTAP
 882                                 /* semaphore that the soft AP CODE
 883                                          waits on */
 884                                 extern struct semaphore ap_eth_sema;
 885
 886                                 /* save ptr to wl0.1 netdev for use
 887                                          in wl_iw.c  */
 888                                 ap_net_dev = ifp->net;
 889                                 /* signal to the SOFTAP 'sleeper' thread,
 890                                          wl0.1 is ready */
 891                                 up(&ap_eth_sema);
 892 #endif
 893                                 DHD_TRACE(("\n ==== pid:%x, net_device for "
 894                                         "if:%s created ===\n\n",
 895                                         current->pid, ifp->net->name));
 896                                 ifp->state = 0;
 897                         }
 898                 }
 899                 break;
 900         case WLC_E_IF_DEL:
 901                 if (ifp->net != NULL) {
 902                         DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
 903                                    __func__));
 904                         netif_stop_queue(ifp->net);
 905                         unregister_netdev(ifp->net);
 906                         ret = DHD_DEL_IF;       /* Make sure the free_netdev()
 907                                                          is called */
 908                 }
 909                 break;
 910         default:
 911                 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
 912                 ASSERT(!ifp->state);
 913                 break;
 914         }
 915
 916         if (ret < 0) {
 917                 if (ifp->net)
 918                         free_netdev(ifp->net);
 919
 920                 dhd->iflist[ifp->idx] = NULL;
 921                 kfree(ifp);
 922 #ifdef SOFTAP
 923                 if (ifp->net == ap_net_dev)
 924                         ap_net_dev = NULL;      /*  NULL  SOFTAP global
 925                                                          wl0.1 as well */
 926 #endif                          /*  SOFTAP */
 927         }
 928 }
 929
 930 static int _dhd_sysioc_thread(void *data)
 931 {
 932         dhd_info_t *dhd = (dhd_info_t *) data;
 933         int i;
 934 #ifdef SOFTAP
 935         bool in_ap = false;
 936 #endif
 937
 938         allow_signal(SIGTERM);
 939
 940         while (down_interruptible(&dhd->sysioc_sem) == 0) {
 941                 if (kthread_should_stop())
 942                         break;
 943                 for (i = 0; i < DHD_MAX_IFS; i++) {
 944                         if (dhd->iflist[i]) {
 945 #ifdef SOFTAP
 946                                 in_ap = (ap_net_dev != NULL);
 947 #endif                          /* SOFTAP */
 948                                 if (dhd->iflist[i]->state)
 949                                         dhd_op_if(dhd->iflist[i]);
 950 #ifdef SOFTAP
 951                                 if (dhd->iflist[i] == NULL) {
 952                                         DHD_TRACE(("\n\n %s: interface %d "
 953                                                 "removed!\n", __func__, i));
 954                                         continue;
 955                                 }
 956
 957                                 if (in_ap && dhd->set_macaddress) {
 958                                         DHD_TRACE(("attempt to set MAC for %s "
 959                                                 "in AP Mode," "blocked. \n",
 960                                                 dhd->iflist[i]->net->name));
 961                                         dhd->set_macaddress = false;
 962                                         continue;
 963                                 }
 964
 965                                 if (in_ap && dhd->set_multicast) {
 966                                         DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
 967                                                 dhd->iflist[i]->net->name));
 968                                         dhd->set_multicast = false;
 969                                         continue;
 970                                 }
 971 #endif                          /* SOFTAP */
 972                                 if (dhd->set_multicast) {
 973                                         dhd->set_multicast = false;
 974                                         _dhd_set_multicast_list(dhd, i);
 975                                 }
 976                                 if (dhd->set_macaddress) {
 977                                         dhd->set_macaddress = false;
 978                                         _dhd_set_mac_address(dhd, i,
 979                                                              &dhd->macvalue);
 980                                 }
 981                         }
 982                 }
 983         }
 984         return 0;
 985 }
 986
 987 static int dhd_set_mac_address(struct net_device *dev, void *addr)
 988 {
 989         int ret = 0;
 990
 991         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
 992         struct sockaddr *sa = (struct sockaddr *)addr;
 993         int ifidx;
 994
 995         ifidx = dhd_net2idx(dhd, dev);
 996         if (ifidx == DHD_BAD_IF)
 997                 return -1;
 998
 999         ASSERT(dhd->sysioc_tsk);
1000         memcpy(&dhd->macvalue, sa->sa_data, ETHER_ADDR_LEN);
1001         dhd->set_macaddress = true;
1002         up(&dhd->sysioc_sem);
1003
1004         return ret;
1005 }
1006
1007 static void dhd_set_multicast_list(struct net_device *dev)
1008 {
1009         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1010         int ifidx;
1011
1012         ifidx = dhd_net2idx(dhd, dev);
1013         if (ifidx == DHD_BAD_IF)
1014                 return;
1015
1016         ASSERT(dhd->sysioc_tsk);
1017         dhd->set_multicast = true;
1018         up(&dhd->sysioc_sem);
1019 }
1020
1021 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, void *pktbuf)
1022 {
1023         int ret;
1024         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1025
1026         /* Reject if down */
1027         if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1028                 return -ENODEV;
1029
1030         /* Update multicast statistic */
1031         if (PKTLEN(pktbuf) >= ETHER_ADDR_LEN) {
1032                 u8 *pktdata = (u8 *) PKTDATA(pktbuf);
1033                 struct ether_header *eh = (struct ether_header *)pktdata;
1034
1035                 if (ETHER_ISMULTI(eh->ether_dhost))
1036                         dhdp->tx_multicast++;
1037                 if (ntoh16(eh->ether_type) == ETHER_TYPE_802_1X)
1038                         atomic_inc(&dhd->pend_8021x_cnt);
1039         }
1040
1041         /* If the protocol uses a data header, apply it */
1042         dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1043
1044         /* Use bus module to send data frame */
1045 #ifdef BCMDBUS
1046         ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1047 #else
1048         WAKE_LOCK_TIMEOUT(dhdp, WAKE_LOCK_TMOUT, 25);
1049         ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1050 #endif                          /* BCMDBUS */
1051
1052         return ret;
1053 }
1054
1055 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1056 {
1057         int ret;
1058         void *pktbuf;
1059         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1060         int ifidx;
1061
1062         DHD_TRACE(("%s: Enter\n", __func__));
1063
1064         /* Reject if down */
1065         if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1066                 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1067                            __func__, dhd->pub.up, dhd->pub.busstate));
1068                 netif_stop_queue(net);
1069                 return -ENODEV;
1070         }
1071
1072         ifidx = dhd_net2idx(dhd, net);
1073         if (ifidx == DHD_BAD_IF) {
1074                 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1075                 netif_stop_queue(net);
1076                 return -ENODEV;
1077         }
1078
1079         /* Make sure there's enough room for any header */
1080         if (skb_headroom(skb) < dhd->pub.hdrlen) {
1081                 struct sk_buff *skb2;
1082
1083                 DHD_INFO(("%s: insufficient headroom\n",
1084                           dhd_ifname(&dhd->pub, ifidx)));
1085                 dhd->pub.tx_realloc++;
1086                 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1087                 dev_kfree_skb(skb);
1088                 skb = skb2;
1089                 if (skb == NULL) {
1090                         DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1091                                    dhd_ifname(&dhd->pub, ifidx)));
1092                         ret = -ENOMEM;
1093                         goto done;
1094                 }
1095         }
1096
1097         /* Convert to packet */
1098         pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1099         if (!pktbuf) {
1100                 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1101                            dhd_ifname(&dhd->pub, ifidx)));
1102                 dev_kfree_skb_any(skb);
1103                 ret = -ENOMEM;
1104                 goto done;
1105         }
1106
1107         ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1108
1109 done:
1110         if (ret)
1111                 dhd->pub.dstats.tx_dropped++;
1112         else
1113                 dhd->pub.tx_packets++;
1114
1115         /* Return ok: we always eat the packet */
1116         return 0;
1117 }
1118
1119 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1120 {
1121         struct net_device *net;
1122         dhd_info_t *dhd = dhdp->info;
1123
1124         DHD_TRACE(("%s: Enter\n", __func__));
1125
1126         dhdp->txoff = state;
1127         ASSERT(dhd && dhd->iflist[ifidx]);
1128         net = dhd->iflist[ifidx]->net;
1129         if (state == ON)
1130                 netif_stop_queue(net);
1131         else
1132                 netif_wake_queue(net);
1133 }
1134
1135 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, void *pktbuf, int numpkt)
1136 {
1137         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1138         struct sk_buff *skb;
1139         unsigned char *eth;
1140         uint len;
1141         void *data, *pnext, *save_pktbuf;
1142         int i;
1143         dhd_if_t *ifp;
1144         wl_event_msg_t event;
1145
1146         DHD_TRACE(("%s: Enter\n", __func__));
1147
1148         save_pktbuf = pktbuf;
1149
1150         for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1151
1152                 pnext = PKTNEXT(pktbuf);
1153                 PKTSETNEXT(pktbuf, NULL);
1154
1155                 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1156
1157                 /* Get the protocol, maintain skb around eth_type_trans()
1158                  * The main reason for this hack is for the limitation of
1159                  * Linux 2.4 where 'eth_type_trans' uses the
1160                  * 'net->hard_header_len'
1161                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1162                  * coping of the packet coming from the network stack to add
1163                  * BDC, Hardware header etc, during network interface
1164                  * registration
1165                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1166                  * required
1167                  * for BDC, Hardware header etc. and not just the ETH_HLEN
1168                  */
1169                 eth = skb->data;
1170                 len = skb->len;
1171
1172                 ifp = dhd->iflist[ifidx];
1173                 if (ifp == NULL)
1174                         ifp = dhd->iflist[0];
1175
1176                 ASSERT(ifp);
1177                 skb->dev = ifp->net;
1178                 skb->protocol = eth_type_trans(skb, skb->dev);
1179
1180                 if (skb->pkt_type == PACKET_MULTICAST)
1181                         dhd->pub.rx_multicast++;
1182
1183                 skb->data = eth;
1184                 skb->len = len;
1185
1186                 /* Strip header, count, deliver upward */
1187                 skb_pull(skb, ETH_HLEN);
1188
1189                 /* Process special event packets and then discard them */
1190                 if (ntoh16(skb->protocol) == ETHER_TYPE_BRCM)
1191                         dhd_wl_host_event(dhd, &ifidx,
1192                                           skb->mac_header,
1193                                           &event, &data);
1194
1195                 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1196                 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1197                         ifp = dhd->iflist[ifidx];
1198
1199                 if (ifp->net)
1200                         ifp->net->last_rx = jiffies;
1201
1202                 dhdp->dstats.rx_bytes += skb->len;
1203                 dhdp->rx_packets++;     /* Local count */
1204
1205                 if (in_interrupt()) {
1206                         netif_rx(skb);
1207                 } else {
1208                         /* If the receive is not processed inside an ISR,
1209                          * the softirqd must be woken explicitly to service
1210                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
1211                          * by netif_rx_ni(), but in earlier kernels, we need
1212                          * to do it manually.
1213                          */
1214                         netif_rx_ni(skb);
1215                 }
1216         }
1217 }
1218
1219 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1220 {
1221         /* Linux version has nothing to do */
1222         return;
1223 }
1224
1225 void dhd_txcomplete(dhd_pub_t *dhdp, void *txp, bool success)
1226 {
1227         uint ifidx;
1228         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1229         struct ether_header *eh;
1230         u16 type;
1231
1232         dhd_prot_hdrpull(dhdp, &ifidx, txp);
1233
1234         eh = (struct ether_header *)PKTDATA(txp);
1235         type = ntoh16(eh->ether_type);
1236
1237         if (type == ETHER_TYPE_802_1X)
1238                 atomic_dec(&dhd->pend_8021x_cnt);
1239
1240 }
1241
1242 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1243 {
1244         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1245         dhd_if_t *ifp;
1246         int ifidx;
1247
1248         DHD_TRACE(("%s: Enter\n", __func__));
1249
1250         ifidx = dhd_net2idx(dhd, net);
1251         if (ifidx == DHD_BAD_IF)
1252                 return NULL;
1253
1254         ifp = dhd->iflist[ifidx];
1255         ASSERT(dhd && ifp);
1256
1257         if (dhd->pub.up) {
1258                 /* Use the protocol to get dongle stats */
1259                 dhd_prot_dstats(&dhd->pub);
1260         }
1261
1262         /* Copy dongle stats to net device stats */
1263         ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1264         ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1265         ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1266         ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1267         ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1268         ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1269         ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1270         ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1271         ifp->stats.multicast = dhd->pub.dstats.multicast;
1272
1273         return &ifp->stats;
1274 }
1275
1276 static int dhd_watchdog_thread(void *data)
1277 {
1278         dhd_info_t *dhd = (dhd_info_t *) data;
1279         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_WATCHDOG, "dhd_watchdog_thread");
1280
1281         /* This thread doesn't need any user-level access,
1282          * so get rid of all our resources
1283          */
1284 #ifdef DHD_SCHED
1285         if (dhd_watchdog_prio > 0) {
1286                 struct sched_param param;
1287                 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1288                     dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1289                 setScheduler(current, SCHED_FIFO, &param);
1290         }
1291 #endif                          /* DHD_SCHED */
1292
1293         allow_signal(SIGTERM);
1294         /* Run until signal received */
1295         while (1) {
1296                 if (kthread_should_stop())
1297                         break;
1298                 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1299                         if (dhd->pub.dongle_reset == false) {
1300                                 WAKE_LOCK(&dhd->pub, WAKE_LOCK_WATCHDOG);
1301                                 /* Call the bus module watchdog */
1302                                 dhd_bus_watchdog(&dhd->pub);
1303                                 WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_WATCHDOG);
1304                         }
1305                         /* Count the tick for reference */
1306                         dhd->pub.tickcnt++;
1307                 } else
1308                         break;
1309         }
1310
1311         WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_WATCHDOG);
1312         return 0;
1313 }
1314
1315 static void dhd_watchdog(unsigned long data)
1316 {
1317         dhd_info_t *dhd = (dhd_info_t *) data;
1318
1319         if (dhd->watchdog_tsk) {
1320                 up(&dhd->watchdog_sem);
1321
1322                 /* Reschedule the watchdog */
1323                 if (dhd->wd_timer_valid) {
1324                         mod_timer(&dhd->timer,
1325                                   jiffies + dhd_watchdog_ms * HZ / 1000);
1326                 }
1327                 return;
1328         }
1329
1330         /* Call the bus module watchdog */
1331         dhd_bus_watchdog(&dhd->pub);
1332
1333         /* Count the tick for reference */
1334         dhd->pub.tickcnt++;
1335
1336         /* Reschedule the watchdog */
1337         if (dhd->wd_timer_valid)
1338                 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1339 }
1340
1341 static int dhd_dpc_thread(void *data)
1342 {
1343         dhd_info_t *dhd = (dhd_info_t *) data;
1344
1345         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_DPC, "dhd_dpc_thread");
1346         /* This thread doesn't need any user-level access,
1347          * so get rid of all our resources
1348          */
1349 #ifdef DHD_SCHED
1350         if (dhd_dpc_prio > 0) {
1351                 struct sched_param param;
1352                 param.sched_priority =
1353                     (dhd_dpc_prio <
1354                      MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1355                 setScheduler(current, SCHED_FIFO, &param);
1356         }
1357 #endif                          /* DHD_SCHED */
1358
1359         allow_signal(SIGTERM);
1360         /* Run until signal received */
1361         while (1) {
1362                 if (kthread_should_stop())
1363                         break;
1364                 if (down_interruptible(&dhd->dpc_sem) == 0) {
1365                         /* Call bus dpc unless it indicated down
1366                                  (then clean stop) */
1367                         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1368                                 WAKE_LOCK(&dhd->pub, WAKE_LOCK_DPC);
1369                                 if (dhd_bus_dpc(dhd->pub.bus)) {
1370                                         up(&dhd->dpc_sem);
1371                                         WAKE_LOCK_TIMEOUT(&dhd->pub,
1372                                                           WAKE_LOCK_TMOUT, 25);
1373                                 }
1374                                 WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_DPC);
1375                         } else {
1376                                 dhd_bus_stop(dhd->pub.bus, true);
1377                         }
1378                 } else
1379                         break;
1380         }
1381
1382         WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_DPC);
1383         return 0;
1384 }
1385
1386 static void dhd_dpc(unsigned long data)
1387 {
1388         dhd_info_t *dhd;
1389
1390         dhd = (dhd_info_t *) data;
1391
1392         /* Call bus dpc unless it indicated down (then clean stop) */
1393         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1394                 if (dhd_bus_dpc(dhd->pub.bus))
1395                         tasklet_schedule(&dhd->tasklet);
1396         } else {
1397                 dhd_bus_stop(dhd->pub.bus, true);
1398         }
1399 }
1400
1401 void dhd_sched_dpc(dhd_pub_t *dhdp)
1402 {
1403         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1404
1405         if (dhd->dpc_tsk) {
1406                 up(&dhd->dpc_sem);
1407                 return;
1408         }
1409
1410         tasklet_schedule(&dhd->tasklet);
1411 }
1412
1413 #ifdef TOE
1414 /* Retrieve current toe component enables, which are kept
1415          as a bitmap in toe_ol iovar */
1416 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1417 {
1418         wl_ioctl_t ioc;
1419         char buf[32];
1420         int ret;
1421
1422         memset(&ioc, 0, sizeof(ioc));
1423
1424         ioc.cmd = WLC_GET_VAR;
1425         ioc.buf = buf;
1426         ioc.len = (uint) sizeof(buf);
1427         ioc.set = false;
1428
1429         strcpy(buf, "toe_ol");
1430         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1431         if (ret < 0) {
1432                 /* Check for older dongle image that doesn't support toe_ol */
1433                 if (ret == -EIO) {
1434                         DHD_ERROR(("%s: toe not supported by device\n",
1435                                    dhd_ifname(&dhd->pub, ifidx)));
1436                         return -EOPNOTSUPP;
1437                 }
1438
1439                 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1440                           dhd_ifname(&dhd->pub, ifidx), ret));
1441                 return ret;
1442         }
1443
1444         memcpy(toe_ol, buf, sizeof(u32));
1445         return 0;
1446 }
1447
1448 /* Set current toe component enables in toe_ol iovar,
1449          and set toe global enable iovar */
1450 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1451 {
1452         wl_ioctl_t ioc;
1453         char buf[32];
1454         int toe, ret;
1455
1456         memset(&ioc, 0, sizeof(ioc));
1457
1458         ioc.cmd = WLC_SET_VAR;
1459         ioc.buf = buf;
1460         ioc.len = (uint) sizeof(buf);
1461         ioc.set = true;
1462
1463         /* Set toe_ol as requested */
1464
1465         strcpy(buf, "toe_ol");
1466         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1467
1468         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1469         if (ret < 0) {
1470                 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1471                            dhd_ifname(&dhd->pub, ifidx), ret));
1472                 return ret;
1473         }
1474
1475         /* Enable toe globally only if any components are enabled. */
1476
1477         toe = (toe_ol != 0);
1478
1479         strcpy(buf, "toe");
1480         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1481
1482         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1483         if (ret < 0) {
1484                 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1485                            dhd_ifname(&dhd->pub, ifidx), ret));
1486                 return ret;
1487         }
1488
1489         return 0;
1490 }
1491 #endif                          /* TOE */
1492
1493 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1494                                     struct ethtool_drvinfo *info)
1495 {
1496         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1497
1498         sprintf(info->driver, DRV_MODULE_NAME);
1499         sprintf(info->version, "%lu", dhd->pub.drv_version);
1500         sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1501         sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1502 }
1503
1504 struct ethtool_ops dhd_ethtool_ops = {
1505         .get_drvinfo = dhd_ethtool_get_drvinfo
1506 };
1507
1508 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1509 {
1510         struct ethtool_drvinfo info;
1511         char drvname[sizeof(info.driver)];
1512         u32 cmd;
1513 #ifdef TOE
1514         struct ethtool_value edata;
1515         u32 toe_cmpnt, csum_dir;
1516         int ret;
1517 #endif
1518
1519         DHD_TRACE(("%s: Enter\n", __func__));
1520
1521         /* all ethtool calls start with a cmd word */
1522         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1523                 return -EFAULT;
1524
1525         switch (cmd) {
1526         case ETHTOOL_GDRVINFO:
1527                 /* Copy out any request driver name */
1528                 if (copy_from_user(&info, uaddr, sizeof(info)))
1529                         return -EFAULT;
1530                 strncpy(drvname, info.driver, sizeof(info.driver));
1531                 drvname[sizeof(info.driver) - 1] = '\0';
1532
1533                 /* clear struct for return */
1534                 memset(&info, 0, sizeof(info));
1535                 info.cmd = cmd;
1536
1537                 /* if dhd requested, identify ourselves */
1538                 if (strcmp(drvname, "?dhd") == 0) {
1539                         sprintf(info.driver, "dhd");
1540                         strcpy(info.version, EPI_VERSION_STR);
1541                 }
1542
1543                 /* otherwise, require dongle to be up */
1544                 else if (!dhd->pub.up) {
1545                         DHD_ERROR(("%s: dongle is not up\n", __func__));
1546                         return -ENODEV;
1547                 }
1548
1549                 /* finally, report dongle driver type */
1550                 else if (dhd->pub.iswl)
1551                         sprintf(info.driver, "wl");
1552                 else
1553                         sprintf(info.driver, "xx");
1554
1555                 sprintf(info.version, "%lu", dhd->pub.drv_version);
1556                 if (copy_to_user(uaddr, &info, sizeof(info)))
1557                         return -EFAULT;
1558                 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1559                          (int)sizeof(drvname), drvname, info.driver));
1560                 break;
1561
1562 #ifdef TOE
1563                 /* Get toe offload components from dongle */
1564         case ETHTOOL_GRXCSUM:
1565         case ETHTOOL_GTXCSUM:
1566                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1567                 if (ret < 0)
1568                         return ret;
1569
1570                 csum_dir =
1571                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1572
1573                 edata.cmd = cmd;
1574                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1575
1576                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1577                         return -EFAULT;
1578                 break;
1579
1580                 /* Set toe offload components in dongle */
1581         case ETHTOOL_SRXCSUM:
1582         case ETHTOOL_STXCSUM:
1583                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1584                         return -EFAULT;
1585
1586                 /* Read the current settings, update and write back */
1587                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1588                 if (ret < 0)
1589                         return ret;
1590
1591                 csum_dir =
1592                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1593
1594                 if (edata.data != 0)
1595                         toe_cmpnt |= csum_dir;
1596                 else
1597                         toe_cmpnt &= ~csum_dir;
1598
1599                 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1600                 if (ret < 0)
1601                         return ret;
1602
1603                 /* If setting TX checksum mode, tell Linux the new mode */
1604                 if (cmd == ETHTOOL_STXCSUM) {
1605                         if (edata.data)
1606                                 dhd->iflist[0]->net->features |=
1607                                     NETIF_F_IP_CSUM;
1608                         else
1609                                 dhd->iflist[0]->net->features &=
1610                                     ~NETIF_F_IP_CSUM;
1611                 }
1612
1613                 break;
1614 #endif                          /* TOE */
1615
1616         default:
1617                 return -EOPNOTSUPP;
1618         }
1619
1620         return 0;
1621 }
1622
1623 static s16 linuxbcmerrormap[] = { 0,    /* 0 */
1624         -EINVAL,                /* BCME_ERROR */
1625         -EINVAL,                /* BCME_BADARG */
1626         -EINVAL,                /* BCME_BADOPTION */
1627         -EINVAL,                /* BCME_NOTUP */
1628         -EINVAL,                /* BCME_NOTDOWN */
1629         -EINVAL,                /* BCME_NOTAP */
1630         -EINVAL,                /* BCME_NOTSTA */
1631         -EINVAL,                /* BCME_BADKEYIDX */
1632         -EINVAL,                /* BCME_RADIOOFF */
1633         -EINVAL,                /* BCME_NOTBANDLOCKED */
1634         -EINVAL,                /* BCME_NOCLK */
1635         -EINVAL,                /* BCME_BADRATESET */
1636         -EINVAL,                /* BCME_BADBAND */
1637         -E2BIG,                 /* BCME_BUFTOOSHORT */
1638         -E2BIG,                 /* BCME_BUFTOOLONG */
1639         -EBUSY,                 /* BCME_BUSY */
1640         -EINVAL,                /* BCME_NOTASSOCIATED */
1641         -EINVAL,                /* BCME_BADSSIDLEN */
1642         -EINVAL,                /* BCME_OUTOFRANGECHAN */
1643         -EINVAL,                /* BCME_BADCHAN */
1644         -EFAULT,                /* BCME_BADADDR */
1645         -ENOMEM,                /* BCME_NORESOURCE */
1646         -EOPNOTSUPP,            /* BCME_UNSUPPORTED */
1647         -EMSGSIZE,              /* BCME_BADLENGTH */
1648         -EINVAL,                /* BCME_NOTREADY */
1649         -EPERM,                 /* BCME_NOTPERMITTED */
1650         -ENOMEM,                /* BCME_NOMEM */
1651         -EINVAL,                /* BCME_ASSOCIATED */
1652         -ERANGE,                /* BCME_RANGE */
1653         -EINVAL,                /* BCME_NOTFOUND */
1654         -EINVAL,                /* BCME_WME_NOT_ENABLED */
1655         -EINVAL,                /* BCME_TSPEC_NOTFOUND */
1656         -EINVAL,                /* BCME_ACM_NOTSUPPORTED */
1657         -EINVAL,                /* BCME_NOT_WME_ASSOCIATION */
1658         -EIO,                   /* BCME_SDIO_ERROR */
1659         -ENODEV,                /* BCME_DONGLE_DOWN */
1660         -EINVAL,                /* BCME_VERSION */
1661         -EIO,                   /* BCME_TXFAIL */
1662         -EIO,                   /* BCME_RXFAIL */
1663         -EINVAL,                /* BCME_NODEVICE */
1664         -EINVAL,                /* BCME_NMODE_DISABLED */
1665         -ENODATA,               /* BCME_NONRESIDENT */
1666 };
1667
1668 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1669 {
1670         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1671         dhd_ioctl_t ioc;
1672         int bcmerror = 0;
1673         int buflen = 0;
1674         void *buf = NULL;
1675         uint driver = 0;
1676         int ifidx;
1677         bool is_set_key_cmd;
1678
1679         ifidx = dhd_net2idx(dhd, net);
1680         DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1681
1682         if (ifidx == DHD_BAD_IF)
1683                 return -1;
1684
1685 #if defined(CONFIG_WIRELESS_EXT)
1686         /* linux wireless extensions */
1687         if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1688                 /* may recurse, do NOT lock */
1689                 return wl_iw_ioctl(net, ifr, cmd);
1690         }
1691 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
1692
1693         if (cmd == SIOCETHTOOL)
1694                 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1695
1696         if (cmd != SIOCDEVPRIVATE)
1697                 return -EOPNOTSUPP;
1698
1699         memset(&ioc, 0, sizeof(ioc));
1700
1701         /* Copy the ioc control structure part of ioctl request */
1702         if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1703                 bcmerror = -BCME_BADADDR;
1704                 goto done;
1705         }
1706
1707         /* Copy out any buffer passed */
1708         if (ioc.buf) {
1709                 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1710                 /* optimization for direct ioctl calls from kernel */
1711                 /*
1712                    if (segment_eq(get_fs(), KERNEL_DS)) {
1713                    buf = ioc.buf;
1714                    } else {
1715                  */
1716                 {
1717                         buf = kmalloc(buflen, GFP_ATOMIC);
1718                         if (!buf) {
1719                                 bcmerror = -BCME_NOMEM;
1720                                 goto done;
1721                         }
1722                         if (copy_from_user(buf, ioc.buf, buflen)) {
1723                                 bcmerror = -BCME_BADADDR;
1724                                 goto done;
1725                         }
1726                 }
1727         }
1728
1729         /* To differentiate between wl and dhd read 4 more byes */
1730         if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1731                             sizeof(uint)) != 0)) {
1732                 bcmerror = -BCME_BADADDR;
1733                 goto done;
1734         }
1735
1736         if (!capable(CAP_NET_ADMIN)) {
1737                 bcmerror = -BCME_EPERM;
1738                 goto done;
1739         }
1740
1741         /* check for local dhd ioctl and handle it */
1742         if (driver == DHD_IOCTL_MAGIC) {
1743                 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1744                 if (bcmerror)
1745                         dhd->pub.bcmerror = bcmerror;
1746                 goto done;
1747         }
1748
1749         /* send to dongle (must be up, and wl) */
1750         if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1751                 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1752                 bcmerror = BCME_DONGLE_DOWN;
1753                 goto done;
1754         }
1755
1756         if (!dhd->pub.iswl) {
1757                 bcmerror = BCME_DONGLE_DOWN;
1758                 goto done;
1759         }
1760
1761         /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1762          * prevent M4 encryption.
1763          */
1764         is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1765                           ((ioc.cmd == WLC_SET_VAR) &&
1766                            !(strncmp("wsec_key", ioc.buf, 9))) ||
1767                           ((ioc.cmd == WLC_SET_VAR) &&
1768                            !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1769         if (is_set_key_cmd)
1770                 dhd_wait_pend8021x(net);
1771
1772         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_IOCTL, "dhd_ioctl_entry");
1773         WAKE_LOCK(&dhd->pub, WAKE_LOCK_IOCTL);
1774
1775         bcmerror =
1776             dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1777
1778         WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_IOCTL);
1779         WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_IOCTL);
1780 done:
1781         if (!bcmerror && buf && ioc.buf) {
1782                 if (copy_to_user(ioc.buf, buf, buflen))
1783                         bcmerror = -EFAULT;
1784         }
1785
1786         if (buf)
1787                 kfree(buf);
1788
1789         if (bcmerror > 0)
1790                 bcmerror = 0;
1791         else if (bcmerror < BCME_LAST)
1792                 bcmerror = BCME_ERROR;
1793
1794         return linuxbcmerrormap[-bcmerror];
1795 }
1796
1797 static int dhd_stop(struct net_device *net)
1798 {
1799 #if !defined(IGNORE_ETH0_DOWN)
1800         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1801
1802         DHD_TRACE(("%s: Enter\n", __func__));
1803         if (IS_CFG80211_FAVORITE()) {
1804                 wl_cfg80211_down();
1805         }
1806         if (dhd->pub.up == 0)
1807                 return 0;
1808
1809         /* Set state and stop OS transmissions */
1810         dhd->pub.up = 0;
1811         netif_stop_queue(net);
1812 #else
1813         DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1814                 __func__));
1815 #endif                          /* !defined(IGNORE_ETH0_DOWN) */
1816
1817         return 0;
1818 }
1819
1820 static int dhd_open(struct net_device *net)
1821 {
1822         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1823 #ifdef TOE
1824         u32 toe_ol;
1825 #endif
1826         int ifidx = dhd_net2idx(dhd, net);
1827         s32 ret = 0;
1828
1829         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1830
1831         if (ifidx == 0) {       /* do it only for primary eth0 */
1832
1833                 /* try to bring up bus */
1834                 ret = dhd_bus_start(&dhd->pub);
1835                 if (ret != 0) {
1836                         DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1837                         return -1;
1838                 }
1839                 atomic_set(&dhd->pend_8021x_cnt, 0);
1840
1841                 memcpy(net->dev_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);
1842
1843 #ifdef TOE
1844                 /* Get current TOE mode from dongle */
1845                 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1846                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
1847                         dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1848                 else
1849                         dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1850 #endif
1851         }
1852         /* Allow transmit calls */
1853         netif_start_queue(net);
1854         dhd->pub.up = 1;
1855         if (IS_CFG80211_FAVORITE()) {
1856                 if (unlikely(wl_cfg80211_up())) {
1857                         DHD_ERROR(("%s: failed to bring up cfg80211\n",
1858                                    __func__));
1859                         return -1;
1860                 }
1861         }
1862
1863         return ret;
1864 }
1865
1866 osl_t *dhd_osl_attach(void *pdev, uint bustype)
1867 {
1868         return osl_attach(pdev, bustype);
1869 }
1870
1871 void dhd_osl_detach(osl_t *osh)
1872 {
1873         osl_detach(osh);
1874 }
1875
1876 int
1877 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1878            u8 *mac_addr, u32 flags, u8 bssidx)
1879 {
1880         dhd_if_t *ifp;
1881
1882         DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1883
1884         ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1885
1886         ifp = dhd->iflist[ifidx];
1887         if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1888                 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1889                 return -ENOMEM;
1890         }
1891
1892         memset(ifp, 0, sizeof(dhd_if_t));
1893         ifp->info = dhd;
1894         dhd->iflist[ifidx] = ifp;
1895         strlcpy(ifp->name, name, IFNAMSIZ);
1896         if (mac_addr != NULL)
1897                 memcpy(&ifp->mac_addr, mac_addr, ETHER_ADDR_LEN);
1898
1899         if (handle == NULL) {
1900                 ifp->state = WLC_E_IF_ADD;
1901                 ifp->idx = ifidx;
1902                 ASSERT(dhd->sysioc_tsk);
1903                 up(&dhd->sysioc_sem);
1904         } else
1905                 ifp->net = (struct net_device *)handle;
1906
1907         return 0;
1908 }
1909
1910 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1911 {
1912         dhd_if_t *ifp;
1913
1914         DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1915
1916         ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1917         ifp = dhd->iflist[ifidx];
1918         if (!ifp) {
1919                 DHD_ERROR(("%s: Null interface\n", __func__));
1920                 return;
1921         }
1922
1923         ifp->state = WLC_E_IF_DEL;
1924         ifp->idx = ifidx;
1925         ASSERT(dhd->sysioc_tsk);
1926         up(&dhd->sysioc_sem);
1927 }
1928
1929 dhd_pub_t *dhd_attach(osl_t *osh, struct dhd_bus *bus, uint bus_hdrlen)
1930 {
1931         dhd_info_t *dhd = NULL;
1932         struct net_device *net;
1933
1934         DHD_TRACE(("%s: Enter\n", __func__));
1935         /* updates firmware nvram path if it was provided as module
1936                  paramters */
1937         if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1938                 strcpy(fw_path, firmware_path);
1939         if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1940                 strcpy(nv_path, nvram_path);
1941
1942         /* Allocate etherdev, including space for private structure */
1943         net = alloc_etherdev(sizeof(dhd));
1944         if (!net) {
1945                 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1946                 goto fail;
1947         }
1948
1949         /* Allocate primary dhd_info */
1950         dhd = kmalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1951         if (!dhd) {
1952                 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1953                 goto fail;
1954         }
1955
1956         memset(dhd, 0, sizeof(dhd_info_t));
1957
1958         /*
1959          * Save the dhd_info into the priv
1960          */
1961         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1962         dhd->pub.osh = osh;
1963
1964         /* Set network interface name if it was provided as module parameter */
1965         if (iface_name[0]) {
1966                 int len;
1967                 char ch;
1968                 strncpy(net->name, iface_name, IFNAMSIZ);
1969                 net->name[IFNAMSIZ - 1] = 0;
1970                 len = strlen(net->name);
1971                 ch = net->name[len - 1];
1972                 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1973                         strcat(net->name, "%d");
1974         }
1975
1976         if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1977             DHD_BAD_IF)
1978                 goto fail;
1979
1980         net->netdev_ops = NULL;
1981         sema_init(&dhd->proto_sem, 1);
1982         /* Initialize other structure content */
1983         init_waitqueue_head(&dhd->ioctl_resp_wait);
1984         init_waitqueue_head(&dhd->ctrl_wait);
1985
1986         /* Initialize the spinlocks */
1987         spin_lock_init(&dhd->sdlock);
1988         spin_lock_init(&dhd->txqlock);
1989
1990         /* Link to info module */
1991         dhd->pub.info = dhd;
1992
1993         /* Link to bus module */
1994         dhd->pub.bus = bus;
1995         dhd->pub.hdrlen = bus_hdrlen;
1996
1997         /* Attach and link in the protocol */
1998         if (dhd_prot_attach(&dhd->pub) != 0) {
1999                 DHD_ERROR(("dhd_prot_attach failed\n"));
2000                 goto fail;
2001         }
2002 #if defined(CONFIG_WIRELESS_EXT)
2003         /* Attach and link in the iw */
2004         if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
2005                 DHD_ERROR(("wl_iw_attach failed\n"));
2006                 goto fail;
2007         }
2008 #endif  /* defined(CONFIG_WIRELESS_EXT) */
2009
2010         /* Attach and link in the cfg80211 */
2011         if (IS_CFG80211_FAVORITE()) {
2012                 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
2013                         DHD_ERROR(("wl_cfg80211_attach failed\n"));
2014                         goto fail;
2015                 }
2016                 if (!NO_FW_REQ()) {
2017                         strcpy(fw_path, wl_cfg80211_get_fwname());
2018                         strcpy(nv_path, wl_cfg80211_get_nvramname());
2019                 }
2020                 wl_cfg80211_dbg_level(DBG_CFG80211_GET());
2021         }
2022
2023         /* Set up the watchdog timer */
2024         init_timer(&dhd->timer);
2025         dhd->timer.data = (unsigned long) dhd;
2026         dhd->timer.function = dhd_watchdog;
2027
2028         /* Initialize thread based operation and lock */
2029         sema_init(&dhd->sdsem, 1);
2030         if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
2031                 dhd->threads_only = true;
2032         else
2033                 dhd->threads_only = false;
2034
2035         if (dhd_dpc_prio >= 0) {
2036                 /* Initialize watchdog thread */
2037                 sema_init(&dhd->watchdog_sem, 0);
2038                 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
2039                                                 "dhd_watchdog");
2040                 if (IS_ERR(dhd->watchdog_tsk)) {
2041                         printk(KERN_WARNING
2042                                 "dhd_watchdog thread failed to start\n");
2043                         dhd->watchdog_tsk = NULL;
2044                 }
2045         } else {
2046                 dhd->watchdog_tsk = NULL;
2047         }
2048
2049         /* Set up the bottom half handler */
2050         if (dhd_dpc_prio >= 0) {
2051                 /* Initialize DPC thread */
2052                 sema_init(&dhd->dpc_sem, 0);
2053                 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
2054                 if (IS_ERR(dhd->dpc_tsk)) {
2055                         printk(KERN_WARNING
2056                                 "dhd_dpc thread failed to start\n");
2057                         dhd->dpc_tsk = NULL;
2058                 }
2059         } else {
2060                 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
2061                 dhd->dpc_tsk = NULL;
2062         }
2063
2064         if (dhd_sysioc) {
2065                 sema_init(&dhd->sysioc_sem, 0);
2066                 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
2067                                                 "_dhd_sysioc");
2068                 if (IS_ERR(dhd->sysioc_tsk)) {
2069                         printk(KERN_WARNING
2070                                 "_dhd_sysioc thread failed to start\n");
2071                         dhd->sysioc_tsk = NULL;
2072                 }
2073         } else
2074                 dhd->sysioc_tsk = NULL;
2075
2076         /*
2077          * Save the dhd_info into the priv
2078          */
2079         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2080
2081 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2082         g_bus = bus;
2083 #endif
2084 #if defined(CONFIG_PM_SLEEP)
2085         register_pm_notifier(&dhd_sleep_pm_notifier);
2086 #endif  /* defined(CONFIG_PM_SLEEP) */
2087         /* && defined(DHD_GPL) */
2088         /* Init lock suspend to prevent kernel going to suspend */
2089         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_TMOUT, "dhd_wake_lock");
2090         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_LINK_DOWN_TMOUT,
2091                        "dhd_wake_lock_link_dw_event");
2092         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_PNO_FIND_TMOUT,
2093                        "dhd_wake_lock_link_pno_find_event");
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                 WAKE_LOCK_INIT(dhdp, WAKE_LOCK_DOWNLOAD, "dhd_bus_start");
2128                 WAKE_LOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2129                 if (!(dhd_bus_download_firmware(dhd->pub.bus, dhd->pub.osh,
2130                                                 fw_path, nv_path))) {
2131                         DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2132                                 "firmware = %s nvram = %s\n",
2133                                 __func__, fw_path, nv_path));
2134                         WAKE_UNLOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2135                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_DOWNLOAD);
2136                         return -1;
2137                 }
2138
2139                 WAKE_UNLOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2140                 WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_DOWNLOAD);
2141         }
2142
2143         /* Start the watchdog timer */
2144         dhd->pub.tickcnt = 0;
2145         dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2146
2147         /* Bring up the bus */
2148         ret = dhd_bus_init(&dhd->pub, true);
2149         if (ret != 0) {
2150                 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2151                 return ret;
2152         }
2153 #if defined(OOB_INTR_ONLY)
2154         /* Host registration for OOB interrupt */
2155         if (bcmsdh_register_oob_intr(dhdp)) {
2156                 del_timer_sync(&dhd->timer);
2157                 dhd->wd_timer_valid = false;
2158                 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2159                 return -ENODEV;
2160         }
2161
2162         /* Enable oob at firmware */
2163         dhd_enable_oob_intr(dhd->pub.bus, true);
2164 #endif                          /* defined(OOB_INTR_ONLY) */
2165
2166         /* If bus is not ready, can't come up */
2167         if (dhd->pub.busstate != DHD_BUS_DATA) {
2168                 del_timer_sync(&dhd->timer);
2169                 dhd->wd_timer_valid = false;
2170                 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2171                 return -ENODEV;
2172         }
2173 #ifdef EMBEDDED_PLATFORM
2174         bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
2175                     sizeof(iovbuf));
2176         dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2177         bcopy(iovbuf, dhdp->eventmask, WL_EVENTING_MASK_LEN);
2178
2179         setbit(dhdp->eventmask, WLC_E_SET_SSID);
2180         setbit(dhdp->eventmask, WLC_E_PRUNE);
2181         setbit(dhdp->eventmask, WLC_E_AUTH);
2182         setbit(dhdp->eventmask, WLC_E_REASSOC);
2183         setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2184         setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2185         setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2186         setbit(dhdp->eventmask, WLC_E_DISASSOC);
2187         setbit(dhdp->eventmask, WLC_E_JOIN);
2188         setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2189         setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2190         setbit(dhdp->eventmask, WLC_E_LINK);
2191         setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2192         setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2193         setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2194         setbit(dhdp->eventmask, WLC_E_TXFAIL);
2195         setbit(dhdp->eventmask, WLC_E_JOIN_START);
2196         setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2197 #ifdef PNO_SUPPORT
2198         setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2199 #endif                          /* PNO_SUPPORT */
2200
2201 /* enable dongle roaming event */
2202
2203         dhdp->pktfilter_count = 1;
2204         /* Setup filter to allow only unicast */
2205         dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2206 #endif                          /* EMBEDDED_PLATFORM */
2207
2208         /* Bus is ready, do any protocol initialization */
2209         ret = dhd_prot_init(&dhd->pub);
2210         if (ret < 0)
2211                 return ret;
2212
2213         return 0;
2214 }
2215
2216 int
2217 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2218           int set)
2219 {
2220         char buf[strlen(name) + 1 + cmd_len];
2221         int len = sizeof(buf);
2222         wl_ioctl_t ioc;
2223         int ret;
2224
2225         len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);
2226
2227         memset(&ioc, 0, sizeof(ioc));
2228
2229         ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2230         ioc.buf = buf;
2231         ioc.len = len;
2232         ioc.set = set;
2233
2234         ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2235         if (!set && ret >= 0)
2236                 memcpy(cmd_buf, buf, cmd_len);
2237
2238         return ret;
2239 }
2240
2241 static struct net_device_ops dhd_ops_pri = {
2242         .ndo_open = dhd_open,
2243         .ndo_stop = dhd_stop,
2244         .ndo_get_stats = dhd_get_stats,
2245         .ndo_do_ioctl = dhd_ioctl_entry,
2246         .ndo_start_xmit = dhd_start_xmit,
2247         .ndo_set_mac_address = dhd_set_mac_address,
2248         .ndo_set_multicast_list = dhd_set_multicast_list
2249 };
2250
2251 static struct net_device_ops dhd_ops_virt = {
2252         .ndo_get_stats = dhd_get_stats,
2253         .ndo_do_ioctl = dhd_ioctl_entry,
2254         .ndo_start_xmit = dhd_start_xmit,
2255         .ndo_set_mac_address = dhd_set_mac_address,
2256         .ndo_set_multicast_list = dhd_set_multicast_list
2257 };
2258
2259 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2260 {
2261         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2262         struct net_device *net;
2263         u8 temp_addr[ETHER_ADDR_LEN] = {
2264                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2265
2266         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2267
2268         ASSERT(dhd && dhd->iflist[ifidx]);
2269
2270         net = dhd->iflist[ifidx]->net;
2271         ASSERT(net);
2272
2273         ASSERT(!net->netdev_ops);
2274         net->netdev_ops = &dhd_ops_virt;
2275
2276         net->netdev_ops = &dhd_ops_pri;
2277
2278         /*
2279          * We have to use the primary MAC for virtual interfaces
2280          */
2281         if (ifidx != 0) {
2282                 /* for virtual interfaces use the primary MAC  */
2283                 memcpy(temp_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);
2284
2285         }
2286
2287         if (ifidx == 1) {
2288                 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2289                 /*  ACCESSPOINT INTERFACE CASE */
2290                 temp_addr[0] |= 0X02;   /* set bit 2 ,
2291                          - Locally Administered address  */
2292
2293         }
2294         net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2295         net->ethtool_ops = &dhd_ethtool_ops;
2296
2297 #if defined(CONFIG_WIRELESS_EXT)
2298         if (!IS_CFG80211_FAVORITE()) {
2299 #if WIRELESS_EXT < 19
2300                 net->get_wireless_stats = dhd_get_wireless_stats;
2301 #endif                          /* WIRELESS_EXT < 19 */
2302 #if WIRELESS_EXT > 12
2303                 net->wireless_handlers =
2304                     (struct iw_handler_def *)&wl_iw_handler_def;
2305 #endif                          /* WIRELESS_EXT > 12 */
2306         }
2307 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
2308
2309         dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2310
2311         memcpy(net->dev_addr, temp_addr, ETHER_ADDR_LEN);
2312
2313         if (register_netdev(net) != 0) {
2314                 DHD_ERROR(("%s: couldn't register the net device\n",
2315                         __func__));
2316                 goto fail;
2317         }
2318
2319         printf("%s: Broadcom Dongle Host Driver\n", net->name);
2320
2321         return 0;
2322
2323 fail:
2324         net->netdev_ops = NULL;
2325         return BCME_ERROR;
2326 }
2327
2328 void dhd_bus_detach(dhd_pub_t *dhdp)
2329 {
2330         dhd_info_t *dhd;
2331
2332         DHD_TRACE(("%s: Enter\n", __func__));
2333
2334         if (dhdp) {
2335                 dhd = (dhd_info_t *) dhdp->info;
2336                 if (dhd) {
2337                         /* Stop the protocol module */
2338                         dhd_prot_stop(&dhd->pub);
2339
2340                         /* Stop the bus module */
2341                         dhd_bus_stop(dhd->pub.bus, true);
2342 #if defined(OOB_INTR_ONLY)
2343                         bcmsdh_unregister_oob_intr();
2344 #endif                          /* defined(OOB_INTR_ONLY) */
2345
2346                         /* Clear the watchdog timer */
2347                         del_timer_sync(&dhd->timer);
2348                         dhd->wd_timer_valid = false;
2349                 }
2350         }
2351 }
2352
2353 void dhd_detach(dhd_pub_t *dhdp)
2354 {
2355         dhd_info_t *dhd;
2356
2357         DHD_TRACE(("%s: Enter\n", __func__));
2358
2359         if (dhdp) {
2360                 dhd = (dhd_info_t *) dhdp->info;
2361                 if (dhd) {
2362                         dhd_if_t *ifp;
2363                         int i;
2364
2365 #if defined(CONFIG_HAS_EARLYSUSPEND)
2366                         if (dhd->early_suspend.suspend)
2367                                 unregister_early_suspend(&dhd->early_suspend);
2368 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2369
2370                         for (i = 1; i < DHD_MAX_IFS; i++)
2371                                 if (dhd->iflist[i])
2372                                         dhd_del_if(dhd, i);
2373
2374                         ifp = dhd->iflist[0];
2375                         ASSERT(ifp);
2376                         if (ifp->net->netdev_ops == &dhd_ops_pri) {
2377                                 dhd_stop(ifp->net);
2378                                 unregister_netdev(ifp->net);
2379                         }
2380
2381                         if (dhd->watchdog_tsk) {
2382                                 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2383                                 kthread_stop(dhd->watchdog_tsk);
2384                                 dhd->watchdog_tsk = NULL;
2385                         }
2386
2387                         if (dhd->dpc_tsk) {
2388                                 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2389                                 kthread_stop(dhd->dpc_tsk);
2390                                 dhd->dpc_tsk = NULL;
2391                         } else
2392                                 tasklet_kill(&dhd->tasklet);
2393
2394                         if (dhd->sysioc_tsk) {
2395                                 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2396                                 kthread_stop(dhd->sysioc_tsk);
2397                                 dhd->sysioc_tsk = NULL;
2398                         }
2399
2400                         dhd_bus_detach(dhdp);
2401
2402                         if (dhdp->prot)
2403                                 dhd_prot_detach(dhdp);
2404
2405 #if defined(CONFIG_WIRELESS_EXT)
2406                         wl_iw_detach();
2407 #endif                          /* (CONFIG_WIRELESS_EXT) */
2408
2409                         if (IS_CFG80211_FAVORITE())
2410                                 wl_cfg80211_detach();
2411
2412 #if defined(CONFIG_PM_SLEEP)
2413                         unregister_pm_notifier(&dhd_sleep_pm_notifier);
2414 #endif  /* defined(CONFIG_PM_SLEEP) */
2415                         /* && defined(DHD_GPL) */
2416                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_TMOUT);
2417                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_LINK_DOWN_TMOUT);
2418                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_PNO_FIND_TMOUT);
2419                         free_netdev(ifp->net);
2420                         kfree(ifp);
2421                         kfree(dhd);
2422                 }
2423         }
2424 }
2425
2426 static void __exit dhd_module_cleanup(void)
2427 {
2428         DHD_TRACE(("%s: Enter\n", __func__));
2429
2430         dhd_bus_unregister();
2431 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2432         wifi_del_dev();
2433 #endif
2434         /* Call customer gpio to turn off power with WL_REG_ON signal */
2435         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2436 }
2437
2438 static int __init dhd_module_init(void)
2439 {
2440         int error;
2441
2442         DHD_TRACE(("%s: Enter\n", __func__));
2443
2444         /* Sanity check on the module parameters */
2445         do {
2446                 /* Both watchdog and DPC as tasklets are ok */
2447                 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2448                         break;
2449
2450                 /* If both watchdog and DPC are threads, TX must be deferred */
2451                 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2452                     && dhd_deferred_tx)
2453                         break;
2454
2455                 DHD_ERROR(("Invalid module parameters.\n"));
2456                 return -EINVAL;
2457         } while (0);
2458         /* Call customer gpio to turn on power with WL_REG_ON signal */
2459         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2460
2461 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2462         sema_init(&wifi_control_sem, 0);
2463
2464         error = wifi_add_dev();
2465         if (error) {
2466                 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2467                 goto faild;
2468         }
2469
2470         /* Waiting callback after platform_driver_register is done or
2471                  exit with error */
2472         if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2473                 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2474                         __func__);
2475                 /* remove device */
2476                 wifi_del_dev();
2477                 goto faild;
2478         }
2479 #endif  /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2480
2481         error = dhd_bus_register();
2482
2483         if (!error)
2484                 printf("\n%s\n", dhd_version);
2485         else {
2486                 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2487                 goto faild;
2488         }
2489         return error;
2490
2491 faild:
2492         /* turn off power and exit */
2493         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2494         return -EINVAL;
2495 }
2496
2497 module_init(dhd_module_init);
2498 module_exit(dhd_module_cleanup);
2499
2500 /*
2501  * OS specific functions required to implement DHD driver in OS independent way
2502  */
2503 int dhd_os_proto_block(dhd_pub_t *pub)
2504 {
2505         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2506
2507         if (dhd) {
2508                 down(&dhd->proto_sem);
2509                 return 1;
2510         }
2511         return 0;
2512 }
2513
2514 int dhd_os_proto_unblock(dhd_pub_t *pub)
2515 {
2516         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2517
2518         if (dhd) {
2519                 up(&dhd->proto_sem);
2520                 return 1;
2521         }
2522
2523         return 0;
2524 }
2525
2526 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2527 {
2528         return (unsigned int)dhd_ioctl_timeout_msec;
2529 }
2530
2531 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2532 {
2533         dhd_ioctl_timeout_msec = (int)timeout_msec;
2534 }
2535
2536 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2537 {
2538         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2539         DECLARE_WAITQUEUE(wait, current);
2540         int timeout = dhd_ioctl_timeout_msec;
2541
2542         /* Convert timeout in millsecond to jiffies */
2543         timeout = timeout * HZ / 1000;
2544
2545         /* Wait until control frame is available */
2546         add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2547         set_current_state(TASK_INTERRUPTIBLE);
2548
2549         while (!(*condition) && (!signal_pending(current) && timeout))
2550                 timeout = schedule_timeout(timeout);
2551
2552         if (signal_pending(current))
2553                 *pending = true;
2554
2555         set_current_state(TASK_RUNNING);
2556         remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2557
2558         return timeout;
2559 }
2560
2561 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2562 {
2563         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2564
2565         if (waitqueue_active(&dhd->ioctl_resp_wait))
2566                 wake_up_interruptible(&dhd->ioctl_resp_wait);
2567
2568         return 0;
2569 }
2570
2571 void dhd_os_wd_timer(void *bus, uint wdtick)
2572 {
2573         dhd_pub_t *pub = bus;
2574         static uint save_dhd_watchdog_ms;
2575         dhd_info_t *dhd = (dhd_info_t *) pub->info;
2576
2577         /* don't start the wd until fw is loaded */
2578         if (pub->busstate == DHD_BUS_DOWN)
2579                 return;
2580
2581         /* Totally stop the timer */
2582         if (!wdtick && dhd->wd_timer_valid == true) {
2583                 del_timer_sync(&dhd->timer);
2584                 dhd->wd_timer_valid = false;
2585                 save_dhd_watchdog_ms = wdtick;
2586                 return;
2587         }
2588
2589         if (wdtick) {
2590                 dhd_watchdog_ms = (uint) wdtick;
2591
2592                 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2593
2594                         if (dhd->wd_timer_valid == true)
2595                                 /* Stop timer and restart at new value */
2596                                 del_timer_sync(&dhd->timer);
2597
2598                         /* Create timer again when watchdog period is
2599                            dynamically changed or in the first instance
2600                          */
2601                         dhd->timer.expires =
2602                             jiffies + dhd_watchdog_ms * HZ / 1000;
2603                         add_timer(&dhd->timer);
2604
2605                 } else {
2606                         /* Re arm the timer, at last watchdog period */
2607                         mod_timer(&dhd->timer,
2608                                   jiffies + dhd_watchdog_ms * HZ / 1000);
2609                 }
2610
2611                 dhd->wd_timer_valid = true;
2612                 save_dhd_watchdog_ms = wdtick;
2613         }
2614 }
2615
2616 void *dhd_os_open_image(char *filename)
2617 {
2618         struct file *fp;
2619
2620         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2621                 return wl_cfg80211_request_fw(filename);
2622
2623         fp = filp_open(filename, O_RDONLY, 0);
2624         /*
2625          * 2.6.11 (FC4) supports filp_open() but later revs don't?
2626          * Alternative:
2627          * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2628          * ???
2629          */
2630         if (IS_ERR(fp))
2631                 fp = NULL;
2632
2633         return fp;
2634 }
2635
2636 int dhd_os_get_image_block(char *buf, int len, void *image)
2637 {
2638         struct file *fp = (struct file *)image;
2639         int rdlen;
2640
2641         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2642                 return wl_cfg80211_read_fw(buf, len);
2643
2644         if (!image)
2645                 return 0;
2646
2647         rdlen = kernel_read(fp, fp->f_pos, buf, len);
2648         if (rdlen > 0)
2649                 fp->f_pos += rdlen;
2650
2651         return rdlen;
2652 }
2653
2654 void dhd_os_close_image(void *image)
2655 {
2656         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2657                 return wl_cfg80211_release_fw();
2658         if (image)
2659                 filp_close((struct file *)image, NULL);
2660 }
2661
2662 void dhd_os_sdlock(dhd_pub_t *pub)
2663 {
2664         dhd_info_t *dhd;
2665
2666         dhd = (dhd_info_t *) (pub->info);
2667
2668         if (dhd->threads_only)
2669                 down(&dhd->sdsem);
2670         else
2671                 spin_lock_bh(&dhd->sdlock);
2672 }
2673
2674 void dhd_os_sdunlock(dhd_pub_t *pub)
2675 {
2676         dhd_info_t *dhd;
2677
2678         dhd = (dhd_info_t *) (pub->info);
2679
2680         if (dhd->threads_only)
2681                 up(&dhd->sdsem);
2682         else
2683                 spin_unlock_bh(&dhd->sdlock);
2684 }
2685
2686 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2687 {
2688         dhd_info_t *dhd;
2689
2690         dhd = (dhd_info_t *) (pub->info);
2691         spin_lock_bh(&dhd->txqlock);
2692 }
2693
2694 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2695 {
2696         dhd_info_t *dhd;
2697
2698         dhd = (dhd_info_t *) (pub->info);
2699         spin_unlock_bh(&dhd->txqlock);
2700 }
2701
2702 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2703 {
2704 }
2705
2706 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2707 {
2708 }
2709
2710 void dhd_os_sdtxlock(dhd_pub_t *pub)
2711 {
2712         dhd_os_sdlock(pub);
2713 }
2714
2715 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2716 {
2717         dhd_os_sdunlock(pub);
2718 }
2719
2720 #if defined(CONFIG_WIRELESS_EXT)
2721 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev)
2722 {
2723         int res = 0;
2724         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2725
2726         res = wl_iw_get_wireless_stats(dev, &dhd->iw.wstats);
2727
2728         if (res == 0)
2729                 return &dhd->iw.wstats;
2730         else
2731                 return NULL;
2732 }
2733 #endif  /* defined(CONFIG_WIRELESS_EXT) */
2734
2735 static int
2736 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2737                   wl_event_msg_t *event, void **data)
2738 {
2739         int bcmerror = 0;
2740
2741         ASSERT(dhd != NULL);
2742
2743         bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2744         if (bcmerror != BCME_OK)
2745                 return bcmerror;
2746
2747 #if defined(CONFIG_WIRELESS_EXT)
2748         if (!IS_CFG80211_FAVORITE()) {
2749                 if ((dhd->iflist[*ifidx] == NULL)
2750                     || (dhd->iflist[*ifidx]->net == NULL)) {
2751                         DHD_ERROR(("%s Exit null pointer\n", __func__));
2752                         return bcmerror;
2753                 }
2754
2755                 if (dhd->iflist[*ifidx]->net)
2756                         wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2757         }
2758 #endif                          /* defined(CONFIG_WIRELESS_EXT)  */
2759
2760         if (IS_CFG80211_FAVORITE()) {
2761                 ASSERT(dhd->iflist[*ifidx] != NULL);
2762                 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2763                 if (dhd->iflist[*ifidx]->net)
2764                         wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2765                                           *data);
2766         }
2767
2768         return bcmerror;
2769 }
2770
2771 /* send up locally generated event */
2772 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2773 {
2774         switch (ntoh32(event->event_type)) {
2775         default:
2776                 break;
2777         }
2778 }
2779
2780 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2781 {
2782         struct dhd_info *dhdinfo = dhd->info;
2783         dhd_os_sdunlock(dhd);
2784         wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2785                                          (*lockvar == false), HZ * 2);
2786         dhd_os_sdlock(dhd);
2787         return;
2788 }
2789
2790 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2791 {
2792         struct dhd_info *dhdinfo = dhd->info;
2793         if (waitqueue_active(&dhdinfo->ctrl_wait))
2794                 wake_up_interruptible(&dhdinfo->ctrl_wait);
2795         return;
2796 }
2797
2798 int dhd_dev_reset(struct net_device *dev, u8 flag)
2799 {
2800         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2801
2802         /* Turning off watchdog */
2803         if (flag)
2804                 dhd_os_wd_timer(&dhd->pub, 0);
2805
2806         dhd_bus_devreset(&dhd->pub, flag);
2807
2808         /* Turning on watchdog back */
2809         if (!flag)
2810                 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2811         DHD_ERROR(("%s:  WLAN OFF DONE\n", __func__));
2812
2813         return 1;
2814 }
2815
2816 int net_os_set_suspend_disable(struct net_device *dev, int val)
2817 {
2818         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2819         int ret = 0;
2820
2821         if (dhd) {
2822                 ret = dhd->pub.suspend_disable_flag;
2823                 dhd->pub.suspend_disable_flag = val;
2824         }
2825         return ret;
2826 }
2827
2828 int net_os_set_suspend(struct net_device *dev, int val)
2829 {
2830         int ret = 0;
2831 #if defined(CONFIG_HAS_EARLYSUSPEND)
2832         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2833
2834         if (dhd) {
2835                 dhd_os_proto_block(&dhd->pub);
2836                 ret = dhd_set_suspend(val, &dhd->pub);
2837                 dhd_os_proto_unblock(&dhd->pub);
2838         }
2839 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2840         return ret;
2841 }
2842
2843 int net_os_set_dtim_skip(struct net_device *dev, int val)
2844 {
2845         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2846
2847         if (dhd)
2848                 dhd->pub.dtim_skip = val;
2849
2850         return 0;
2851 }
2852
2853 int net_os_set_packet_filter(struct net_device *dev, int val)
2854 {
2855         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2856         int ret = 0;
2857
2858         /* Packet filtering is set only if we still in early-suspend and
2859          * we need either to turn it ON or turn it OFF
2860          * We can always turn it OFF in case of early-suspend, but we turn it
2861          * back ON only if suspend_disable_flag was not set
2862          */
2863         if (dhd && dhd->pub.up) {
2864                 dhd_os_proto_block(&dhd->pub);
2865                 if (dhd->pub.in_suspend) {
2866                         if (!val || (val && !dhd->pub.suspend_disable_flag))
2867                                 dhd_set_packet_filter(val, &dhd->pub);
2868                 }
2869                 dhd_os_proto_unblock(&dhd->pub);
2870         }
2871         return ret;
2872 }
2873
2874 void dhd_dev_init_ioctl(struct net_device *dev)
2875 {
2876         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2877
2878         dhd_preinit_ioctls(&dhd->pub);
2879 }
2880
2881 #ifdef PNO_SUPPORT
2882 /* Linux wrapper to call common dhd_pno_clean */
2883 int dhd_dev_pno_reset(struct net_device *dev)
2884 {
2885         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2886
2887         return dhd_pno_clean(&dhd->pub);
2888 }
2889
2890 /* Linux wrapper to call common dhd_pno_enable */
2891 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2892 {
2893         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2894
2895         return dhd_pno_enable(&dhd->pub, pfn_enabled);
2896 }
2897
2898 /* Linux wrapper to call common dhd_pno_set */
2899 int
2900 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2901                 unsigned char scan_fr)
2902 {
2903         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2904
2905         return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2906 }
2907
2908 /* Linux wrapper to get  pno status */
2909 int dhd_dev_get_pno_status(struct net_device *dev)
2910 {
2911         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2912
2913         return dhd_pno_get_status(&dhd->pub);
2914 }
2915
2916 #endif                          /* PNO_SUPPORT */
2917
2918 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2919 {
2920         return atomic_read(&dhd->pend_8021x_cnt);
2921 }
2922
2923 #define MAX_WAIT_FOR_8021X_TX   10
2924
2925 int dhd_wait_pend8021x(struct net_device *dev)
2926 {
2927         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2928         int timeout = 10 * HZ / 1000;
2929         int ntimes = MAX_WAIT_FOR_8021X_TX;
2930         int pend = dhd_get_pend_8021x_cnt(dhd);
2931
2932         while (ntimes && pend) {
2933                 if (pend) {
2934                         set_current_state(TASK_INTERRUPTIBLE);
2935                         schedule_timeout(timeout);
2936                         set_current_state(TASK_RUNNING);
2937                         ntimes--;
2938                 }
2939                 pend = dhd_get_pend_8021x_cnt(dhd);
2940         }
2941         return pend;
2942 }
2943
2944 #ifdef DHD_DEBUG
2945 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2946 {
2947         int ret = 0;
2948         struct file *fp;
2949         mm_segment_t old_fs;
2950         loff_t pos = 0;
2951
2952         /* change to KERNEL_DS address limit */
2953         old_fs = get_fs();
2954         set_fs(KERNEL_DS);
2955
2956         /* open file to write */
2957         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2958         if (!fp) {
2959                 printf("%s: open file error\n", __func__);
2960                 ret = -1;
2961                 goto exit;
2962         }
2963
2964         /* Write buf to file */
2965         fp->f_op->write(fp, buf, size, &pos);
2966
2967 exit:
2968         /* free buf before return */
2969         kfree(buf);
2970         /* close file before return */
2971         if (fp)
2972                 filp_close(fp, current->files);
2973         /* restore previous address limit */
2974         set_fs(old_fs);
2975
2976         return ret;
2977 }
2978 #endif                          /* DHD_DEBUG */