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 <bcmutils.h>
  36
  37 #include <dngl_stats.h>
  38 #include <dhd.h>
  39 #include <dhd_bus.h>
  40 #include <dhd_proto.h>
  41 #include <dhd_dbg.h>
  42
  43 #include <wl_cfg80211.h>
  44
  45 #define EPI_VERSION_STR         "4.218.248.5"
  46 #define ETH_P_BRCM                      0x886c
  47
  48 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
  49 #include <linux/wifi_tiwlan.h>
  50
  51 struct semaphore wifi_control_sem;
  52
  53 struct dhd_bus *g_bus;
  54
  55 static struct wifi_platform_data *wifi_control_data;
  56 static struct resource *wifi_irqres;
  57
  58 int wifi_get_irq_number(unsigned long *irq_flags_ptr)
  59 {
  60         if (wifi_irqres) {
  61                 *irq_flags_ptr = wifi_irqres->flags & IRQF_TRIGGER_MASK;
  62                 return (int)wifi_irqres->start;
  63         }
  64 #ifdef CUSTOM_OOB_GPIO_NUM
  65         return CUSTOM_OOB_GPIO_NUM;
  66 #else
  67         return -1;
  68 #endif
  69 }
  70
  71 int wifi_set_carddetect(int on)
  72 {
  73         printk(KERN_ERR "%s = %d\n", __func__, on);
  74         if (wifi_control_data && wifi_control_data->set_carddetect)
  75                 wifi_control_data->set_carddetect(on);
  76         return 0;
  77 }
  78
  79 int wifi_set_power(int on, unsigned long msec)
  80 {
  81         printk(KERN_ERR "%s = %d\n", __func__, on);
  82         if (wifi_control_data && wifi_control_data->set_power)
  83                 wifi_control_data->set_power(on);
  84         if (msec)
  85                 mdelay(msec);
  86         return 0;
  87 }
  88
  89 int wifi_set_reset(int on, unsigned long msec)
  90 {
  91         printk(KERN_ERR "%s = %d\n", __func__, on);
  92         if (wifi_control_data && wifi_control_data->set_reset)
  93                 wifi_control_data->set_reset(on);
  94         if (msec)
  95                 mdelay(msec);
  96         return 0;
  97 }
  98
  99 static int wifi_probe(struct platform_device *pdev)
 100 {
 101         struct wifi_platform_data *wifi_ctrl =
 102             (struct wifi_platform_data *)(pdev->dev.platform_data);
 103
 104         printk(KERN_ERR "## %s\n", __func__);
 105         wifi_irqres =
 106             platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 107                                          "bcm4329_wlan_irq");
 108         wifi_control_data = wifi_ctrl;
 109
 110         wifi_set_power(1, 0);   /* Power On */
 111         wifi_set_carddetect(1); /* CardDetect (0->1) */
 112
 113         up(&wifi_control_sem);
 114         return 0;
 115 }
 116
 117 static int wifi_remove(struct platform_device *pdev)
 118 {
 119         struct wifi_platform_data *wifi_ctrl =
 120             (struct wifi_platform_data *)(pdev->dev.platform_data);
 121
 122         printk(KERN_ERR "## %s\n", __func__);
 123         wifi_control_data = wifi_ctrl;
 124
 125         wifi_set_carddetect(0); /* CardDetect (1->0) */
 126         wifi_set_power(0, 0);   /* Power Off */
 127
 128         up(&wifi_control_sem);
 129         return 0;
 130 }
 131
 132 static int wifi_suspend(struct platform_device *pdev, pm_message_t state)
 133 {
 134         DHD_TRACE(("##> %s\n", __func__));
 135         return 0;
 136 }
 137
 138 static int wifi_resume(struct platform_device *pdev)
 139 {
 140         DHD_TRACE(("##> %s\n", __func__));
 141         return 0;
 142 }
 143
 144 static struct platform_driver wifi_device = {
 145         .probe = wifi_probe,
 146         .remove = wifi_remove,
 147         .suspend = wifi_suspend,
 148         .resume = wifi_resume,
 149         .driver = {
 150                    .name = KBUILD_MODNAME,
 151                    }
 152 };
 153
 154 int wifi_add_dev(void)
 155 {
 156         DHD_TRACE(("## Calling platform_driver_register\n"));
 157         return platform_driver_register(&wifi_device);
 158 }
 159
 160 void wifi_del_dev(void)
 161 {
 162         DHD_TRACE(("## Unregister platform_driver_register\n"));
 163         platform_driver_unregister(&wifi_device);
 164 }
 165 #endif  /* defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
 166
 167 #if defined(CONFIG_PM_SLEEP)
 168 #include <linux/suspend.h>
 169 atomic_t dhd_mmc_suspend;
 170 DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait);
 171 #endif  /*  defined(CONFIG_PM_SLEEP) */
 172
 173 #if defined(OOB_INTR_ONLY)
 174 extern void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable);
 175 #endif  /* defined(OOB_INTR_ONLY) */
 176
 177 MODULE_AUTHOR("Broadcom Corporation");
 178 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
 179 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
 180 MODULE_LICENSE("Dual BSD/GPL");
 181
 182 #define DRV_MODULE_NAME "brcmfmac"
 183
 184 /* Linux wireless extension support */
 185 #if defined(CONFIG_WIRELESS_EXT)
 186 #include <wl_iw.h>
 187 extern wl_iw_extra_params_t g_wl_iw_params;
 188 #endif          /* defined(CONFIG_WIRELESS_EXT) */
 189
 190 #if defined(CONFIG_HAS_EARLYSUSPEND)
 191 #include <linux/earlysuspend.h>
 192 extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
 193                             uint len);
 194 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 195
 196 #ifdef PKT_FILTER_SUPPORT
 197 extern void dhd_pktfilter_offload_set(dhd_pub_t *dhd, char *arg);
 198 extern void dhd_pktfilter_offload_enable(dhd_pub_t *dhd, char *arg, int enable,
 199                                          int master_mode);
 200 #endif
 201
 202 /* Interface control information */
 203 typedef struct dhd_if {
 204         struct dhd_info *info;  /* back pointer to dhd_info */
 205         /* OS/stack specifics */
 206         struct net_device *net;
 207         struct net_device_stats stats;
 208         int idx;                /* iface idx in dongle */
 209         int state;              /* interface state */
 210         uint subunit;           /* subunit */
 211         u8 mac_addr[ETH_ALEN];  /* assigned MAC address */
 212         bool attached;          /* Delayed attachment when unset */
 213         bool txflowcontrol;     /* Per interface flow control indicator */
 214         char name[IFNAMSIZ];    /* linux interface name */
 215 } dhd_if_t;
 216
 217 /* Local private structure (extension of pub) */
 218 typedef struct dhd_info {
 219 #if defined(CONFIG_WIRELESS_EXT)
 220         wl_iw_t iw;             /* wireless extensions state (must be first) */
 221 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
 222
 223         dhd_pub_t pub;
 224
 225         /* OS/stack specifics */
 226         dhd_if_t *iflist[DHD_MAX_IFS];
 227
 228         struct semaphore proto_sem;
 229         wait_queue_head_t ioctl_resp_wait;
 230         struct timer_list timer;
 231         bool wd_timer_valid;
 232         struct tasklet_struct tasklet;
 233         spinlock_t sdlock;
 234         spinlock_t txqlock;
 235         /* Thread based operation */
 236         bool threads_only;
 237         struct semaphore sdsem;
 238         struct task_struct *watchdog_tsk;
 239         struct semaphore watchdog_sem;
 240         struct task_struct *dpc_tsk;
 241         struct semaphore dpc_sem;
 242
 243         /* Thread to issue ioctl for multicast */
 244         struct task_struct *sysioc_tsk;
 245         struct semaphore sysioc_sem;
 246         bool set_multicast;
 247         bool set_macaddress;
 248         u8 macvalue[ETH_ALEN];
 249         wait_queue_head_t ctrl_wait;
 250         atomic_t pend_8021x_cnt;
 251
 252 #ifdef CONFIG_HAS_EARLYSUSPEND
 253         struct early_suspend early_suspend;
 254 #endif                          /* CONFIG_HAS_EARLYSUSPEND */
 255 } dhd_info_t;
 256
 257 /* Definitions to provide path to the firmware and nvram
 258  * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt"
 259  */
 260 char firmware_path[MOD_PARAM_PATHLEN];
 261 char nvram_path[MOD_PARAM_PATHLEN];
 262
 263 /* load firmware and/or nvram values from the filesystem */
 264 module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0);
 265 module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0);
 266
 267 /* Error bits */
 268 module_param(dhd_msg_level, int, 0);
 269
 270 /* Spawn a thread for system ioctls (set mac, set mcast) */
 271 uint dhd_sysioc = true;
 272 module_param(dhd_sysioc, uint, 0);
 273
 274 /* Watchdog interval */
 275 uint dhd_watchdog_ms = 10;
 276 module_param(dhd_watchdog_ms, uint, 0);
 277
 278 #ifdef DHD_DEBUG
 279 /* Console poll interval */
 280 uint dhd_console_ms;
 281 module_param(dhd_console_ms, uint, 0);
 282 #endif                          /* DHD_DEBUG */
 283
 284 /* ARP offload agent mode : Enable ARP Host Auto-Reply
 285 and ARP Peer Auto-Reply */
 286 uint dhd_arp_mode = 0xb;
 287 module_param(dhd_arp_mode, uint, 0);
 288
 289 /* ARP offload enable */
 290 uint dhd_arp_enable = true;
 291 module_param(dhd_arp_enable, uint, 0);
 292
 293 /* Global Pkt filter enable control */
 294 uint dhd_pkt_filter_enable = true;
 295 module_param(dhd_pkt_filter_enable, uint, 0);
 296
 297 /*  Pkt filter init setup */
 298 uint dhd_pkt_filter_init;
 299 module_param(dhd_pkt_filter_init, uint, 0);
 300
 301 /* Pkt filter mode control */
 302 uint dhd_master_mode = true;
 303 module_param(dhd_master_mode, uint, 1);
 304
 305 /* Watchdog thread priority, -1 to use kernel timer */
 306 int dhd_watchdog_prio = 97;
 307 module_param(dhd_watchdog_prio, int, 0);
 308
 309 /* DPC thread priority, -1 to use tasklet */
 310 int dhd_dpc_prio = 98;
 311 module_param(dhd_dpc_prio, int, 0);
 312
 313 /* DPC thread priority, -1 to use tasklet */
 314 extern int dhd_dongle_memsize;
 315 module_param(dhd_dongle_memsize, int, 0);
 316
 317 /* Contorl fw roaming */
 318 #ifdef CUSTOMER_HW2
 319 uint dhd_roam;
 320 #else
 321 uint dhd_roam = 1;
 322 #endif
 323
 324 /* Control radio state */
 325 uint dhd_radio_up = 1;
 326
 327 /* Network inteface name */
 328 char iface_name[IFNAMSIZ] = "wlan";
 329 module_param_string(iface_name, iface_name, IFNAMSIZ, 0);
 330
 331 /* The following are specific to the SDIO dongle */
 332
 333 /* IOCTL response timeout */
 334 int dhd_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;
 335
 336 /* Idle timeout for backplane clock */
 337 int dhd_idletime = DHD_IDLETIME_TICKS;
 338 module_param(dhd_idletime, int, 0);
 339
 340 /* Use polling */
 341 uint dhd_poll = false;
 342 module_param(dhd_poll, uint, 0);
 343
 344 /* Use cfg80211 */
 345 uint dhd_cfg80211 = true;
 346 module_param(dhd_cfg80211, uint, 0);
 347
 348 /* Use interrupts */
 349 uint dhd_intr = true;
 350 module_param(dhd_intr, uint, 0);
 351
 352 /* SDIO Drive Strength (in milliamps) */
 353 uint dhd_sdiod_drive_strength = 6;
 354 module_param(dhd_sdiod_drive_strength, uint, 0);
 355
 356 /* Tx/Rx bounds */
 357 extern uint dhd_txbound;
 358 extern uint dhd_rxbound;
 359 module_param(dhd_txbound, uint, 0);
 360 module_param(dhd_rxbound, uint, 0);
 361
 362 /* Deferred transmits */
 363 extern uint dhd_deferred_tx;
 364 module_param(dhd_deferred_tx, uint, 0);
 365
 366 #ifdef SDTEST
 367 /* Echo packet generator (pkts/s) */
 368 uint dhd_pktgen;
 369 module_param(dhd_pktgen, uint, 0);
 370
 371 /* Echo packet len (0 => sawtooth, max 2040) */
 372 uint dhd_pktgen_len;
 373 module_param(dhd_pktgen_len, uint, 0);
 374 #endif
 375
 376 #define FAVORITE_WIFI_CP        (!!dhd_cfg80211)
 377 #define IS_CFG80211_FAVORITE() FAVORITE_WIFI_CP
 378 #define DBG_CFG80211_GET() ((dhd_cfg80211 & WL_DBG_MASK) >> 1)
 379 #define NO_FW_REQ() (dhd_cfg80211 & 0x80)
 380
 381 /* Version string to report */
 382 #ifdef DHD_DEBUG
 383 #define DHD_COMPILED "\nCompiled in " SRCBASE
 384 #else
 385 #define DHD_COMPILED
 386 #endif
 387
 388 static void dhd_dpc(unsigned long data);
 389 /* forward decl */
 390 extern int dhd_wait_pend8021x(struct net_device *dev);
 391
 392 #ifdef TOE
 393 #ifndef BDC
 394 #error TOE requires BDC
 395 #endif                          /* !BDC */
 396 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
 397 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
 398 #endif                          /* TOE */
 399
 400 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
 401                              wl_event_msg_t *event_ptr, void **data_ptr);
 402
 403 #if defined(CONFIG_PM_SLEEP)
 404 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
 405                                  unsigned long action, void *ignored)
 406 {
 407         switch (action) {
 408         case PM_HIBERNATION_PREPARE:
 409         case PM_SUSPEND_PREPARE:
 410                 atomic_set(&dhd_mmc_suspend, true);
 411                 return NOTIFY_OK;
 412         case PM_POST_HIBERNATION:
 413         case PM_POST_SUSPEND:
 414                 atomic_set(&dhd_mmc_suspend, false);
 415                 return NOTIFY_OK;
 416         }
 417         return 0;
 418 }
 419
 420 static struct notifier_block dhd_sleep_pm_notifier = {
 421         .notifier_call = dhd_sleep_pm_callback,
 422         .priority = 0
 423 };
 424
 425 extern int register_pm_notifier(struct notifier_block *nb);
 426 extern int unregister_pm_notifier(struct notifier_block *nb);
 427 #endif  /* defined(CONFIG_PM_SLEEP) */
 428         /* && defined(DHD_GPL) */
 429 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
 430 {
 431 #ifdef PKT_FILTER_SUPPORT
 432         DHD_TRACE(("%s: %d\n", __func__, value));
 433         /* 1 - Enable packet filter, only allow unicast packet to send up */
 434         /* 0 - Disable packet filter */
 435         if (dhd_pkt_filter_enable) {
 436                 int i;
 437
 438                 for (i = 0; i < dhd->pktfilter_count; i++) {
 439                         dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
 440                         dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
 441                                                      value, dhd_master_mode);
 442                 }
 443         }
 444 #endif
 445 }
 446
 447 #if defined(CONFIG_HAS_EARLYSUSPEND)
 448 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
 449 {
 450         int power_mode = PM_MAX;
 451         /* wl_pkt_filter_enable_t       enable_parm; */
 452         char iovbuf[32];
 453         int bcn_li_dtim = 3;
 454 #ifdef CUSTOMER_HW2
 455         uint roamvar = 1;
 456 #endif                          /* CUSTOMER_HW2 */
 457
 458         DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
 459                    __func__, value, dhd->in_suspend));
 460
 461         if (dhd && dhd->up) {
 462                 if (value && dhd->in_suspend) {
 463
 464                         /* Kernel suspended */
 465                         DHD_TRACE(("%s: force extra Suspend setting\n",
 466                                    __func__));
 467
 468                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 469                                          (char *)&power_mode,
 470                                          sizeof(power_mode));
 471
 472                         /* Enable packet filter, only allow unicast
 473                                  packet to send up */
 474                         dhd_set_packet_filter(1, dhd);
 475
 476                         /* if dtim skip setup as default force it
 477                          * to wake each third dtim
 478                          * for better power saving.
 479                          * Note that side effect is chance to miss BC/MC
 480                          * packet
 481                          */
 482                         if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
 483                                 bcn_li_dtim = 3;
 484                         else
 485                                 bcn_li_dtim = dhd->dtim_skip;
 486                         bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
 487                                     4, iovbuf, sizeof(iovbuf));
 488                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 489                                          sizeof(iovbuf));
 490 #ifdef CUSTOMER_HW2
 491                         /* Disable build-in roaming to allowed \
 492                          * supplicant to take of romaing
 493                          */
 494                         bcm_mkiovar("roam_off", (char *)&roamvar, 4,
 495                                     iovbuf, sizeof(iovbuf));
 496                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 497                                          sizeof(iovbuf));
 498 #endif                          /* CUSTOMER_HW2 */
 499                 } else {
 500
 501                         /* Kernel resumed  */
 502                         DHD_TRACE(("%s: Remove extra suspend setting\n",
 503                                    __func__));
 504
 505                         power_mode = PM_FAST;
 506                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 507                                          (char *)&power_mode,
 508                                          sizeof(power_mode));
 509
 510                         /* disable pkt filter */
 511                         dhd_set_packet_filter(0, dhd);
 512
 513                         /* restore pre-suspend setting for dtim_skip */
 514                         bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
 515                                     4, iovbuf, sizeof(iovbuf));
 516
 517                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 518                                          sizeof(iovbuf));
 519 #ifdef CUSTOMER_HW2
 520                         roamvar = 0;
 521                         bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
 522                                     sizeof(iovbuf));
 523                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 524                                          sizeof(iovbuf));
 525 #endif                          /* CUSTOMER_HW2 */
 526                 }
 527         }
 528
 529         return 0;
 530 }
 531
 532 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
 533 {
 534         dhd_pub_t *dhdp = &dhd->pub;
 535
 536         dhd_os_proto_block(dhdp);
 537         /* Set flag when early suspend was called */
 538         dhdp->in_suspend = val;
 539         if (!dhdp->suspend_disable_flag)
 540                 dhd_set_suspend(val, dhdp);
 541         dhd_os_proto_unblock(dhdp);
 542 }
 543
 544 static void dhd_early_suspend(struct early_suspend *h)
 545 {
 546         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 547
 548         DHD_TRACE(("%s: enter\n", __func__));
 549
 550         if (dhd)
 551                 dhd_suspend_resume_helper(dhd, 1);
 552
 553 }
 554
 555 static void dhd_late_resume(struct early_suspend *h)
 556 {
 557         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 558
 559         DHD_TRACE(("%s: enter\n", __func__));
 560
 561         if (dhd)
 562                 dhd_suspend_resume_helper(dhd, 0);
 563 }
 564 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 565
 566 /*
 567  * Generalized timeout mechanism.  Uses spin sleep with exponential
 568  * back-off until
 569  * the sleep time reaches one jiffy, then switches over to task delay.  Usage:
 570  *
 571  *      dhd_timeout_start(&tmo, usec);
 572  *      while (!dhd_timeout_expired(&tmo))
 573  *              if (poll_something())
 574  *                      break;
 575  *      if (dhd_timeout_expired(&tmo))
 576  *              fatal();
 577  */
 578
 579 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
 580 {
 581         tmo->limit = usec;
 582         tmo->increment = 0;
 583         tmo->elapsed = 0;
 584         tmo->tick = 1000000 / HZ;
 585 }
 586
 587 int dhd_timeout_expired(dhd_timeout_t *tmo)
 588 {
 589         /* Does nothing the first call */
 590         if (tmo->increment == 0) {
 591                 tmo->increment = 1;
 592                 return 0;
 593         }
 594
 595         if (tmo->elapsed >= tmo->limit)
 596                 return 1;
 597
 598         /* Add the delay that's about to take place */
 599         tmo->elapsed += tmo->increment;
 600
 601         if (tmo->increment < tmo->tick) {
 602                 udelay(tmo->increment);
 603                 tmo->increment *= 2;
 604                 if (tmo->increment > tmo->tick)
 605                         tmo->increment = tmo->tick;
 606         } else {
 607                 wait_queue_head_t delay_wait;
 608                 DECLARE_WAITQUEUE(wait, current);
 609                 int pending;
 610                 init_waitqueue_head(&delay_wait);
 611                 add_wait_queue(&delay_wait, &wait);
 612                 set_current_state(TASK_INTERRUPTIBLE);
 613                 schedule_timeout(1);
 614                 pending = signal_pending(current);
 615                 remove_wait_queue(&delay_wait, &wait);
 616                 set_current_state(TASK_RUNNING);
 617                 if (pending)
 618                         return 1;       /* Interrupted */
 619         }
 620
 621         return 0;
 622 }
 623
 624 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
 625 {
 626         int i = 0;
 627
 628         ASSERT(dhd);
 629         while (i < DHD_MAX_IFS) {
 630                 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
 631                         return i;
 632                 i++;
 633         }
 634
 635         return DHD_BAD_IF;
 636 }
 637
 638 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
 639 {
 640         int i = DHD_MAX_IFS;
 641
 642         ASSERT(dhd);
 643
 644         if (name == NULL || *name == '\0')
 645                 return 0;
 646
 647         while (--i > 0)
 648                 if (dhd->iflist[i]
 649                     && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
 650                         break;
 651
 652         DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
 653
 654         return i;               /* default - the primary interface */
 655 }
 656
 657 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
 658 {
 659         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
 660
 661         ASSERT(dhd);
 662
 663         if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
 664                 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
 665                 return "<if_bad>";
 666         }
 667
 668         if (dhd->iflist[ifidx] == NULL) {
 669                 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
 670                 return "<if_null>";
 671         }
 672
 673         if (dhd->iflist[ifidx]->net)
 674                 return dhd->iflist[ifidx]->net->name;
 675
 676         return "<if_none>";
 677 }
 678
 679 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
 680 {
 681         struct net_device *dev;
 682         struct netdev_hw_addr *ha;
 683         u32 allmulti, cnt;
 684
 685         wl_ioctl_t ioc;
 686         char *buf, *bufp;
 687         uint buflen;
 688         int ret;
 689
 690         ASSERT(dhd && dhd->iflist[ifidx]);
 691         dev = dhd->iflist[ifidx]->net;
 692         cnt = netdev_mc_count(dev);
 693
 694         /* Determine initial value of allmulti flag */
 695         allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
 696
 697         /* Send down the multicast list first. */
 698
 699         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
 700         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 701         if (!bufp) {
 702                 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
 703                            dhd_ifname(&dhd->pub, ifidx), cnt));
 704                 return;
 705         }
 706
 707         strcpy(bufp, "mcast_list");
 708         bufp += strlen("mcast_list") + 1;
 709
 710         cnt = cpu_to_le32(cnt);
 711         memcpy(bufp, &cnt, sizeof(cnt));
 712         bufp += sizeof(cnt);
 713
 714         netdev_for_each_mc_addr(ha, dev) {
 715                 if (!cnt)
 716                         break;
 717                 memcpy(bufp, ha->addr, ETH_ALEN);
 718                 bufp += ETH_ALEN;
 719                 cnt--;
 720         }
 721
 722         memset(&ioc, 0, sizeof(ioc));
 723         ioc.cmd = WLC_SET_VAR;
 724         ioc.buf = buf;
 725         ioc.len = buflen;
 726         ioc.set = true;
 727
 728         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 729         if (ret < 0) {
 730                 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
 731                            dhd_ifname(&dhd->pub, ifidx), cnt));
 732                 allmulti = cnt ? true : allmulti;
 733         }
 734
 735         kfree(buf);
 736
 737         /* Now send the allmulti setting.  This is based on the setting in the
 738          * net_device flags, but might be modified above to be turned on if we
 739          * were trying to set some addresses and dongle rejected it...
 740          */
 741
 742         buflen = sizeof("allmulti") + sizeof(allmulti);
 743         buf = kmalloc(buflen, GFP_ATOMIC);
 744         if (!buf) {
 745                 DHD_ERROR(("%s: out of memory for allmulti\n",
 746                            dhd_ifname(&dhd->pub, ifidx)));
 747                 return;
 748         }
 749         allmulti = cpu_to_le32(allmulti);
 750
 751         if (!bcm_mkiovar
 752             ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
 753                 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
 754                         "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
 755                         (int)sizeof(allmulti), buflen));
 756                 kfree(buf);
 757                 return;
 758         }
 759
 760         memset(&ioc, 0, sizeof(ioc));
 761         ioc.cmd = WLC_SET_VAR;
 762         ioc.buf = buf;
 763         ioc.len = buflen;
 764         ioc.set = true;
 765
 766         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 767         if (ret < 0) {
 768                 DHD_ERROR(("%s: set allmulti %d failed\n",
 769                            dhd_ifname(&dhd->pub, ifidx),
 770                            le32_to_cpu(allmulti)));
 771         }
 772
 773         kfree(buf);
 774
 775         /* Finally, pick up the PROMISC flag as well, like the NIC
 776                  driver does */
 777
 778         allmulti = (dev->flags & IFF_PROMISC) ? true : false;
 779         allmulti = cpu_to_le32(allmulti);
 780
 781         memset(&ioc, 0, sizeof(ioc));
 782         ioc.cmd = WLC_SET_PROMISC;
 783         ioc.buf = &allmulti;
 784         ioc.len = sizeof(allmulti);
 785         ioc.set = true;
 786
 787         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 788         if (ret < 0) {
 789                 DHD_ERROR(("%s: set promisc %d failed\n",
 790                            dhd_ifname(&dhd->pub, ifidx),
 791                            le32_to_cpu(allmulti)));
 792         }
 793 }
 794
 795 static int
 796 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, u8 *addr)
 797 {
 798         char buf[32];
 799         wl_ioctl_t ioc;
 800         int ret;
 801
 802         DHD_TRACE(("%s enter\n", __func__));
 803         if (!bcm_mkiovar
 804             ("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) {
 805                 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
 806                            dhd_ifname(&dhd->pub, ifidx)));
 807                 return -1;
 808         }
 809         memset(&ioc, 0, sizeof(ioc));
 810         ioc.cmd = WLC_SET_VAR;
 811         ioc.buf = buf;
 812         ioc.len = 32;
 813         ioc.set = true;
 814
 815         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 816         if (ret < 0) {
 817                 DHD_ERROR(("%s: set cur_etheraddr failed\n",
 818                            dhd_ifname(&dhd->pub, ifidx)));
 819         } else {
 820                 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN);
 821         }
 822
 823         return ret;
 824 }
 825
 826 #ifdef SOFTAP
 827 extern struct net_device *ap_net_dev;
 828 #endif
 829
 830 static void dhd_op_if(dhd_if_t *ifp)
 831 {
 832         dhd_info_t *dhd;
 833         int ret = 0, err = 0;
 834
 835         ASSERT(ifp && ifp->info && ifp->idx);   /* Virtual interfaces only */
 836
 837         dhd = ifp->info;
 838
 839         DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
 840
 841         switch (ifp->state) {
 842         case WLC_E_IF_ADD:
 843                 /*
 844                  * Delete the existing interface before overwriting it
 845                  * in case we missed the WLC_E_IF_DEL event.
 846                  */
 847                 if (ifp->net != NULL) {
 848                         DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
 849                         "try free & unregister\n",
 850                         __func__, ifp->net->name));
 851                         netif_stop_queue(ifp->net);
 852                         unregister_netdev(ifp->net);
 853                         free_netdev(ifp->net);
 854                 }
 855                 /* Allocate etherdev, including space for private structure */
 856                 ifp->net = alloc_etherdev(sizeof(dhd));
 857                 if (!ifp->net) {
 858                         DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
 859                         ret = -ENOMEM;
 860                 }
 861                 if (ret == 0) {
 862                         strcpy(ifp->net->name, ifp->name);
 863                         memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
 864                         err = dhd_net_attach(&dhd->pub, ifp->idx);
 865                         if (err != 0) {
 866                                 DHD_ERROR(("%s: dhd_net_attach failed, "
 867                                         "err %d\n",
 868                                         __func__, err));
 869                                 ret = -EOPNOTSUPP;
 870                         } else {
 871 #ifdef SOFTAP
 872                                 /* semaphore that the soft AP CODE
 873                                          waits on */
 874                                 extern struct semaphore ap_eth_sema;
 875
 876                                 /* save ptr to wl0.1 netdev for use
 877                                          in wl_iw.c  */
 878                                 ap_net_dev = ifp->net;
 879                                 /* signal to the SOFTAP 'sleeper' thread,
 880                                          wl0.1 is ready */
 881                                 up(&ap_eth_sema);
 882 #endif
 883                                 DHD_TRACE(("\n ==== pid:%x, net_device for "
 884                                         "if:%s created ===\n\n",
 885                                         current->pid, ifp->net->name));
 886                                 ifp->state = 0;
 887                         }
 888                 }
 889                 break;
 890         case WLC_E_IF_DEL:
 891                 if (ifp->net != NULL) {
 892                         DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
 893                                    __func__));
 894                         netif_stop_queue(ifp->net);
 895                         unregister_netdev(ifp->net);
 896                         ret = DHD_DEL_IF;       /* Make sure the free_netdev()
 897                                                          is called */
 898                 }
 899                 break;
 900         default:
 901                 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
 902                 ASSERT(!ifp->state);
 903                 break;
 904         }
 905
 906         if (ret < 0) {
 907                 if (ifp->net)
 908                         free_netdev(ifp->net);
 909
 910                 dhd->iflist[ifp->idx] = NULL;
 911                 kfree(ifp);
 912 #ifdef SOFTAP
 913                 if (ifp->net == ap_net_dev)
 914                         ap_net_dev = NULL;      /*  NULL  SOFTAP global
 915                                                          wl0.1 as well */
 916 #endif                          /*  SOFTAP */
 917         }
 918 }
 919
 920 static int _dhd_sysioc_thread(void *data)
 921 {
 922         dhd_info_t *dhd = (dhd_info_t *) data;
 923         int i;
 924 #ifdef SOFTAP
 925         bool in_ap = false;
 926 #endif
 927
 928         allow_signal(SIGTERM);
 929
 930         while (down_interruptible(&dhd->sysioc_sem) == 0) {
 931                 if (kthread_should_stop())
 932                         break;
 933                 for (i = 0; i < DHD_MAX_IFS; i++) {
 934                         if (dhd->iflist[i]) {
 935 #ifdef SOFTAP
 936                                 in_ap = (ap_net_dev != NULL);
 937 #endif                          /* SOFTAP */
 938                                 if (dhd->iflist[i]->state)
 939                                         dhd_op_if(dhd->iflist[i]);
 940 #ifdef SOFTAP
 941                                 if (dhd->iflist[i] == NULL) {
 942                                         DHD_TRACE(("\n\n %s: interface %d "
 943                                                 "removed!\n", __func__, i));
 944                                         continue;
 945                                 }
 946
 947                                 if (in_ap && dhd->set_macaddress) {
 948                                         DHD_TRACE(("attempt to set MAC for %s "
 949                                                 "in AP Mode," "blocked. \n",
 950                                                 dhd->iflist[i]->net->name));
 951                                         dhd->set_macaddress = false;
 952                                         continue;
 953                                 }
 954
 955                                 if (in_ap && dhd->set_multicast) {
 956                                         DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
 957                                                 dhd->iflist[i]->net->name));
 958                                         dhd->set_multicast = false;
 959                                         continue;
 960                                 }
 961 #endif                          /* SOFTAP */
 962                                 if (dhd->set_multicast) {
 963                                         dhd->set_multicast = false;
 964                                         _dhd_set_multicast_list(dhd, i);
 965                                 }
 966                                 if (dhd->set_macaddress) {
 967                                         dhd->set_macaddress = false;
 968                                         _dhd_set_mac_address(dhd, i,
 969                                                              dhd->macvalue);
 970                                 }
 971                         }
 972                 }
 973         }
 974         return 0;
 975 }
 976
 977 static int dhd_set_mac_address(struct net_device *dev, void *addr)
 978 {
 979         int ret = 0;
 980
 981         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
 982         struct sockaddr *sa = (struct sockaddr *)addr;
 983         int ifidx;
 984
 985         ifidx = dhd_net2idx(dhd, dev);
 986         if (ifidx == DHD_BAD_IF)
 987                 return -1;
 988
 989         ASSERT(dhd->sysioc_tsk);
 990         memcpy(&dhd->macvalue, sa->sa_data, ETH_ALEN);
 991         dhd->set_macaddress = true;
 992         up(&dhd->sysioc_sem);
 993
 994         return ret;
 995 }
 996
 997 static void dhd_set_multicast_list(struct net_device *dev)
 998 {
 999         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1000         int ifidx;
1001
1002         ifidx = dhd_net2idx(dhd, dev);
1003         if (ifidx == DHD_BAD_IF)
1004                 return;
1005
1006         ASSERT(dhd->sysioc_tsk);
1007         dhd->set_multicast = true;
1008         up(&dhd->sysioc_sem);
1009 }
1010
1011 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf)
1012 {
1013         int ret;
1014         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1015
1016         /* Reject if down */
1017         if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1018                 return -ENODEV;
1019
1020         /* Update multicast statistic */
1021         if (pktbuf->len >= ETH_ALEN) {
1022                 u8 *pktdata = (u8 *) (pktbuf->data);
1023                 struct ethhdr *eh = (struct ethhdr *)pktdata;
1024
1025                 if (is_multicast_ether_addr(eh->h_dest))
1026                         dhdp->tx_multicast++;
1027                 if (ntohs(eh->h_proto) == ETH_P_PAE)
1028                         atomic_inc(&dhd->pend_8021x_cnt);
1029         }
1030
1031         /* If the protocol uses a data header, apply it */
1032         dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1033
1034         /* Use bus module to send data frame */
1035 #ifdef BCMDBUS
1036         ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1037 #else
1038         ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1039 #endif                          /* BCMDBUS */
1040
1041         return ret;
1042 }
1043
1044 static inline void *
1045 osl_pkt_frmnative(struct sk_buff *skb)
1046 {
1047         return (void *)skb;
1048 }
1049 #define PKTFRMNATIVE(osh, skb)  \
1050         osl_pkt_frmnative((struct sk_buff *)(skb))
1051
1052 static inline struct sk_buff *
1053 osl_pkt_tonative(void *pkt)
1054 {
1055         return (struct sk_buff *)pkt;
1056 }
1057 #define PKTTONATIVE(osh, pkt)   \
1058         osl_pkt_tonative((pkt))
1059
1060 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1061 {
1062         int ret;
1063         void *pktbuf;
1064         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1065         int ifidx;
1066
1067         DHD_TRACE(("%s: Enter\n", __func__));
1068
1069         /* Reject if down */
1070         if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1071                 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1072                            __func__, dhd->pub.up, dhd->pub.busstate));
1073                 netif_stop_queue(net);
1074                 return -ENODEV;
1075         }
1076
1077         ifidx = dhd_net2idx(dhd, net);
1078         if (ifidx == DHD_BAD_IF) {
1079                 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1080                 netif_stop_queue(net);
1081                 return -ENODEV;
1082         }
1083
1084         /* Make sure there's enough room for any header */
1085         if (skb_headroom(skb) < dhd->pub.hdrlen) {
1086                 struct sk_buff *skb2;
1087
1088                 DHD_INFO(("%s: insufficient headroom\n",
1089                           dhd_ifname(&dhd->pub, ifidx)));
1090                 dhd->pub.tx_realloc++;
1091                 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1092                 dev_kfree_skb(skb);
1093                 skb = skb2;
1094                 if (skb == NULL) {
1095                         DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1096                                    dhd_ifname(&dhd->pub, ifidx)));
1097                         ret = -ENOMEM;
1098                         goto done;
1099                 }
1100         }
1101
1102         /* Convert to packet */
1103         pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1104         if (!pktbuf) {
1105                 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1106                            dhd_ifname(&dhd->pub, ifidx)));
1107                 dev_kfree_skb_any(skb);
1108                 ret = -ENOMEM;
1109                 goto done;
1110         }
1111
1112         ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1113
1114 done:
1115         if (ret)
1116                 dhd->pub.dstats.tx_dropped++;
1117         else
1118                 dhd->pub.tx_packets++;
1119
1120         /* Return ok: we always eat the packet */
1121         return 0;
1122 }
1123
1124 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1125 {
1126         struct net_device *net;
1127         dhd_info_t *dhd = dhdp->info;
1128
1129         DHD_TRACE(("%s: Enter\n", __func__));
1130
1131         dhdp->txoff = state;
1132         ASSERT(dhd && dhd->iflist[ifidx]);
1133         net = dhd->iflist[ifidx]->net;
1134         if (state == ON)
1135                 netif_stop_queue(net);
1136         else
1137                 netif_wake_queue(net);
1138 }
1139
1140 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf,
1141                   int numpkt)
1142 {
1143         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1144         struct sk_buff *skb;
1145         unsigned char *eth;
1146         uint len;
1147         void *data;
1148         struct sk_buff *pnext, *save_pktbuf;
1149         int i;
1150         dhd_if_t *ifp;
1151         wl_event_msg_t event;
1152
1153         DHD_TRACE(("%s: Enter\n", __func__));
1154
1155         save_pktbuf = pktbuf;
1156
1157         for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1158
1159                 pnext = pktbuf->next;
1160                 pktbuf->next = NULL;
1161
1162                 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1163
1164                 /* Get the protocol, maintain skb around eth_type_trans()
1165                  * The main reason for this hack is for the limitation of
1166                  * Linux 2.4 where 'eth_type_trans' uses the
1167                  * 'net->hard_header_len'
1168                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1169                  * coping of the packet coming from the network stack to add
1170                  * BDC, Hardware header etc, during network interface
1171                  * registration
1172                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1173                  * required
1174                  * for BDC, Hardware header etc. and not just the ETH_HLEN
1175                  */
1176                 eth = skb->data;
1177                 len = skb->len;
1178
1179                 ifp = dhd->iflist[ifidx];
1180                 if (ifp == NULL)
1181                         ifp = dhd->iflist[0];
1182
1183                 ASSERT(ifp);
1184                 skb->dev = ifp->net;
1185                 skb->protocol = eth_type_trans(skb, skb->dev);
1186
1187                 if (skb->pkt_type == PACKET_MULTICAST)
1188                         dhd->pub.rx_multicast++;
1189
1190                 skb->data = eth;
1191                 skb->len = len;
1192
1193                 /* Strip header, count, deliver upward */
1194                 skb_pull(skb, ETH_HLEN);
1195
1196                 /* Process special event packets and then discard them */
1197                 if (ntohs(skb->protocol) == ETH_P_BRCM)
1198                         dhd_wl_host_event(dhd, &ifidx,
1199                                           skb_mac_header(skb),
1200                                           &event, &data);
1201
1202                 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1203                 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1204                         ifp = dhd->iflist[ifidx];
1205
1206                 if (ifp->net)
1207                         ifp->net->last_rx = jiffies;
1208
1209                 dhdp->dstats.rx_bytes += skb->len;
1210                 dhdp->rx_packets++;     /* Local count */
1211
1212                 if (in_interrupt()) {
1213                         netif_rx(skb);
1214                 } else {
1215                         /* If the receive is not processed inside an ISR,
1216                          * the softirqd must be woken explicitly to service
1217                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
1218                          * by netif_rx_ni(), but in earlier kernels, we need
1219                          * to do it manually.
1220                          */
1221                         netif_rx_ni(skb);
1222                 }
1223         }
1224 }
1225
1226 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1227 {
1228         /* Linux version has nothing to do */
1229         return;
1230 }
1231
1232 void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success)
1233 {
1234         uint ifidx;
1235         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1236         struct ethhdr *eh;
1237         u16 type;
1238
1239         dhd_prot_hdrpull(dhdp, &ifidx, txp);
1240
1241         eh = (struct ethhdr *)(txp->data);
1242         type = ntohs(eh->h_proto);
1243
1244         if (type == ETH_P_PAE)
1245                 atomic_dec(&dhd->pend_8021x_cnt);
1246
1247 }
1248
1249 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1250 {
1251         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1252         dhd_if_t *ifp;
1253         int ifidx;
1254
1255         DHD_TRACE(("%s: Enter\n", __func__));
1256
1257         ifidx = dhd_net2idx(dhd, net);
1258         if (ifidx == DHD_BAD_IF)
1259                 return NULL;
1260
1261         ifp = dhd->iflist[ifidx];
1262         ASSERT(dhd && ifp);
1263
1264         if (dhd->pub.up) {
1265                 /* Use the protocol to get dongle stats */
1266                 dhd_prot_dstats(&dhd->pub);
1267         }
1268
1269         /* Copy dongle stats to net device stats */
1270         ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1271         ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1272         ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1273         ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1274         ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1275         ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1276         ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1277         ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1278         ifp->stats.multicast = dhd->pub.dstats.multicast;
1279
1280         return &ifp->stats;
1281 }
1282
1283 static int dhd_watchdog_thread(void *data)
1284 {
1285         dhd_info_t *dhd = (dhd_info_t *) data;
1286
1287         /* This thread doesn't need any user-level access,
1288          * so get rid of all our resources
1289          */
1290 #ifdef DHD_SCHED
1291         if (dhd_watchdog_prio > 0) {
1292                 struct sched_param param;
1293                 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1294                     dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1295                 setScheduler(current, SCHED_FIFO, &param);
1296         }
1297 #endif                          /* DHD_SCHED */
1298
1299         allow_signal(SIGTERM);
1300         /* Run until signal received */
1301         while (1) {
1302                 if (kthread_should_stop())
1303                         break;
1304                 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1305                         if (dhd->pub.dongle_reset == false) {
1306                                 /* Call the bus module watchdog */
1307                                 dhd_bus_watchdog(&dhd->pub);
1308                         }
1309                         /* Count the tick for reference */
1310                         dhd->pub.tickcnt++;
1311                 } else
1312                         break;
1313         }
1314         return 0;
1315 }
1316
1317 static void dhd_watchdog(unsigned long data)
1318 {
1319         dhd_info_t *dhd = (dhd_info_t *) data;
1320
1321         if (dhd->watchdog_tsk) {
1322                 up(&dhd->watchdog_sem);
1323
1324                 /* Reschedule the watchdog */
1325                 if (dhd->wd_timer_valid) {
1326                         mod_timer(&dhd->timer,
1327                                   jiffies + dhd_watchdog_ms * HZ / 1000);
1328                 }
1329                 return;
1330         }
1331
1332         /* Call the bus module watchdog */
1333         dhd_bus_watchdog(&dhd->pub);
1334
1335         /* Count the tick for reference */
1336         dhd->pub.tickcnt++;
1337
1338         /* Reschedule the watchdog */
1339         if (dhd->wd_timer_valid)
1340                 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1341 }
1342
1343 static int dhd_dpc_thread(void *data)
1344 {
1345         dhd_info_t *dhd = (dhd_info_t *) data;
1346
1347         /* This thread doesn't need any user-level access,
1348          * so get rid of all our resources
1349          */
1350 #ifdef DHD_SCHED
1351         if (dhd_dpc_prio > 0) {
1352                 struct sched_param param;
1353                 param.sched_priority =
1354                     (dhd_dpc_prio <
1355                      MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1356                 setScheduler(current, SCHED_FIFO, &param);
1357         }
1358 #endif                          /* DHD_SCHED */
1359
1360         allow_signal(SIGTERM);
1361         /* Run until signal received */
1362         while (1) {
1363                 if (kthread_should_stop())
1364                         break;
1365                 if (down_interruptible(&dhd->dpc_sem) == 0) {
1366                         /* Call bus dpc unless it indicated down
1367                                  (then clean stop) */
1368                         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1369                                 if (dhd_bus_dpc(dhd->pub.bus)) {
1370                                         up(&dhd->dpc_sem);
1371                                 }
1372                         } else {
1373                                 dhd_bus_stop(dhd->pub.bus, true);
1374                         }
1375                 } else
1376                         break;
1377         }
1378         return 0;
1379 }
1380
1381 static void dhd_dpc(unsigned long data)
1382 {
1383         dhd_info_t *dhd;
1384
1385         dhd = (dhd_info_t *) data;
1386
1387         /* Call bus dpc unless it indicated down (then clean stop) */
1388         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1389                 if (dhd_bus_dpc(dhd->pub.bus))
1390                         tasklet_schedule(&dhd->tasklet);
1391         } else {
1392                 dhd_bus_stop(dhd->pub.bus, true);
1393         }
1394 }
1395
1396 void dhd_sched_dpc(dhd_pub_t *dhdp)
1397 {
1398         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1399
1400         if (dhd->dpc_tsk) {
1401                 up(&dhd->dpc_sem);
1402                 return;
1403         }
1404
1405         tasklet_schedule(&dhd->tasklet);
1406 }
1407
1408 #ifdef TOE
1409 /* Retrieve current toe component enables, which are kept
1410          as a bitmap in toe_ol iovar */
1411 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1412 {
1413         wl_ioctl_t ioc;
1414         char buf[32];
1415         int ret;
1416
1417         memset(&ioc, 0, sizeof(ioc));
1418
1419         ioc.cmd = WLC_GET_VAR;
1420         ioc.buf = buf;
1421         ioc.len = (uint) sizeof(buf);
1422         ioc.set = false;
1423
1424         strcpy(buf, "toe_ol");
1425         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1426         if (ret < 0) {
1427                 /* Check for older dongle image that doesn't support toe_ol */
1428                 if (ret == -EIO) {
1429                         DHD_ERROR(("%s: toe not supported by device\n",
1430                                    dhd_ifname(&dhd->pub, ifidx)));
1431                         return -EOPNOTSUPP;
1432                 }
1433
1434                 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1435                           dhd_ifname(&dhd->pub, ifidx), ret));
1436                 return ret;
1437         }
1438
1439         memcpy(toe_ol, buf, sizeof(u32));
1440         return 0;
1441 }
1442
1443 /* Set current toe component enables in toe_ol iovar,
1444          and set toe global enable iovar */
1445 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1446 {
1447         wl_ioctl_t ioc;
1448         char buf[32];
1449         int toe, ret;
1450
1451         memset(&ioc, 0, sizeof(ioc));
1452
1453         ioc.cmd = WLC_SET_VAR;
1454         ioc.buf = buf;
1455         ioc.len = (uint) sizeof(buf);
1456         ioc.set = true;
1457
1458         /* Set toe_ol as requested */
1459
1460         strcpy(buf, "toe_ol");
1461         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1462
1463         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1464         if (ret < 0) {
1465                 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1466                            dhd_ifname(&dhd->pub, ifidx), ret));
1467                 return ret;
1468         }
1469
1470         /* Enable toe globally only if any components are enabled. */
1471
1472         toe = (toe_ol != 0);
1473
1474         strcpy(buf, "toe");
1475         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1476
1477         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1478         if (ret < 0) {
1479                 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1480                            dhd_ifname(&dhd->pub, ifidx), ret));
1481                 return ret;
1482         }
1483
1484         return 0;
1485 }
1486 #endif                          /* TOE */
1487
1488 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1489                                     struct ethtool_drvinfo *info)
1490 {
1491         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1492
1493         sprintf(info->driver, DRV_MODULE_NAME);
1494         sprintf(info->version, "%lu", dhd->pub.drv_version);
1495         sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1496         sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1497 }
1498
1499 struct ethtool_ops dhd_ethtool_ops = {
1500         .get_drvinfo = dhd_ethtool_get_drvinfo
1501 };
1502
1503 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1504 {
1505         struct ethtool_drvinfo info;
1506         char drvname[sizeof(info.driver)];
1507         u32 cmd;
1508 #ifdef TOE
1509         struct ethtool_value edata;
1510         u32 toe_cmpnt, csum_dir;
1511         int ret;
1512 #endif
1513
1514         DHD_TRACE(("%s: Enter\n", __func__));
1515
1516         /* all ethtool calls start with a cmd word */
1517         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1518                 return -EFAULT;
1519
1520         switch (cmd) {
1521         case ETHTOOL_GDRVINFO:
1522                 /* Copy out any request driver name */
1523                 if (copy_from_user(&info, uaddr, sizeof(info)))
1524                         return -EFAULT;
1525                 strncpy(drvname, info.driver, sizeof(info.driver));
1526                 drvname[sizeof(info.driver) - 1] = '\0';
1527
1528                 /* clear struct for return */
1529                 memset(&info, 0, sizeof(info));
1530                 info.cmd = cmd;
1531
1532                 /* if dhd requested, identify ourselves */
1533                 if (strcmp(drvname, "?dhd") == 0) {
1534                         sprintf(info.driver, "dhd");
1535                         strcpy(info.version, EPI_VERSION_STR);
1536                 }
1537
1538                 /* otherwise, require dongle to be up */
1539                 else if (!dhd->pub.up) {
1540                         DHD_ERROR(("%s: dongle is not up\n", __func__));
1541                         return -ENODEV;
1542                 }
1543
1544                 /* finally, report dongle driver type */
1545                 else if (dhd->pub.iswl)
1546                         sprintf(info.driver, "wl");
1547                 else
1548                         sprintf(info.driver, "xx");
1549
1550                 sprintf(info.version, "%lu", dhd->pub.drv_version);
1551                 if (copy_to_user(uaddr, &info, sizeof(info)))
1552                         return -EFAULT;
1553                 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1554                          (int)sizeof(drvname), drvname, info.driver));
1555                 break;
1556
1557 #ifdef TOE
1558                 /* Get toe offload components from dongle */
1559         case ETHTOOL_GRXCSUM:
1560         case ETHTOOL_GTXCSUM:
1561                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1562                 if (ret < 0)
1563                         return ret;
1564
1565                 csum_dir =
1566                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1567
1568                 edata.cmd = cmd;
1569                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1570
1571                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1572                         return -EFAULT;
1573                 break;
1574
1575                 /* Set toe offload components in dongle */
1576         case ETHTOOL_SRXCSUM:
1577         case ETHTOOL_STXCSUM:
1578                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1579                         return -EFAULT;
1580
1581                 /* Read the current settings, update and write back */
1582                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1583                 if (ret < 0)
1584                         return ret;
1585
1586                 csum_dir =
1587                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1588
1589                 if (edata.data != 0)
1590                         toe_cmpnt |= csum_dir;
1591                 else
1592                         toe_cmpnt &= ~csum_dir;
1593
1594                 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1595                 if (ret < 0)
1596                         return ret;
1597
1598                 /* If setting TX checksum mode, tell Linux the new mode */
1599                 if (cmd == ETHTOOL_STXCSUM) {
1600                         if (edata.data)
1601                                 dhd->iflist[0]->net->features |=
1602                                     NETIF_F_IP_CSUM;
1603                         else
1604                                 dhd->iflist[0]->net->features &=
1605                                     ~NETIF_F_IP_CSUM;
1606                 }
1607
1608                 break;
1609 #endif                          /* TOE */
1610
1611         default:
1612                 return -EOPNOTSUPP;
1613         }
1614
1615         return 0;
1616 }
1617
1618 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1619 {
1620         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1621         dhd_ioctl_t ioc;
1622         int bcmerror = 0;
1623         int buflen = 0;
1624         void *buf = NULL;
1625         uint driver = 0;
1626         int ifidx;
1627         bool is_set_key_cmd;
1628
1629         ifidx = dhd_net2idx(dhd, net);
1630         DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1631
1632         if (ifidx == DHD_BAD_IF)
1633                 return -1;
1634
1635 #if defined(CONFIG_WIRELESS_EXT)
1636         /* linux wireless extensions */
1637         if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1638                 /* may recurse, do NOT lock */
1639                 return wl_iw_ioctl(net, ifr, cmd);
1640         }
1641 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
1642
1643         if (cmd == SIOCETHTOOL)
1644                 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1645
1646         if (cmd != SIOCDEVPRIVATE)
1647                 return -EOPNOTSUPP;
1648
1649         memset(&ioc, 0, sizeof(ioc));
1650
1651         /* Copy the ioc control structure part of ioctl request */
1652         if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1653                 bcmerror = -EINVAL;
1654                 goto done;
1655         }
1656
1657         /* Copy out any buffer passed */
1658         if (ioc.buf) {
1659                 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1660                 /* optimization for direct ioctl calls from kernel */
1661                 /*
1662                    if (segment_eq(get_fs(), KERNEL_DS)) {
1663                    buf = ioc.buf;
1664                    } else {
1665                  */
1666                 {
1667                         buf = kmalloc(buflen, GFP_ATOMIC);
1668                         if (!buf) {
1669                                 bcmerror = -ENOMEM;
1670                                 goto done;
1671                         }
1672                         if (copy_from_user(buf, ioc.buf, buflen)) {
1673                                 bcmerror = -EINVAL;
1674                                 goto done;
1675                         }
1676                 }
1677         }
1678
1679         /* To differentiate between wl and dhd read 4 more byes */
1680         if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1681                             sizeof(uint)) != 0)) {
1682                 bcmerror = -EINVAL;
1683                 goto done;
1684         }
1685
1686         if (!capable(CAP_NET_ADMIN)) {
1687                 bcmerror = -EPERM;
1688                 goto done;
1689         }
1690
1691         /* check for local dhd ioctl and handle it */
1692         if (driver == DHD_IOCTL_MAGIC) {
1693                 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1694                 if (bcmerror)
1695                         dhd->pub.bcmerror = bcmerror;
1696                 goto done;
1697         }
1698
1699         /* send to dongle (must be up, and wl) */
1700         if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1701                 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1702                 bcmerror = -EIO;
1703                 goto done;
1704         }
1705
1706         if (!dhd->pub.iswl) {
1707                 bcmerror = -EIO;
1708                 goto done;
1709         }
1710
1711         /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1712          * prevent M4 encryption.
1713          */
1714         is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1715                           ((ioc.cmd == WLC_SET_VAR) &&
1716                            !(strncmp("wsec_key", ioc.buf, 9))) ||
1717                           ((ioc.cmd == WLC_SET_VAR) &&
1718                            !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1719         if (is_set_key_cmd)
1720                 dhd_wait_pend8021x(net);
1721
1722         bcmerror =
1723             dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1724
1725 done:
1726         if (!bcmerror && buf && ioc.buf) {
1727                 if (copy_to_user(ioc.buf, buf, buflen))
1728                         bcmerror = -EFAULT;
1729         }
1730
1731         kfree(buf);
1732
1733         if (bcmerror > 0)
1734                 bcmerror = 0;
1735
1736         return bcmerror;
1737 }
1738
1739 static int dhd_stop(struct net_device *net)
1740 {
1741 #if !defined(IGNORE_ETH0_DOWN)
1742         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1743
1744         DHD_TRACE(("%s: Enter\n", __func__));
1745         if (IS_CFG80211_FAVORITE()) {
1746                 wl_cfg80211_down();
1747         }
1748         if (dhd->pub.up == 0)
1749                 return 0;
1750
1751         /* Set state and stop OS transmissions */
1752         dhd->pub.up = 0;
1753         netif_stop_queue(net);
1754 #else
1755         DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1756                 __func__));
1757 #endif                          /* !defined(IGNORE_ETH0_DOWN) */
1758
1759         return 0;
1760 }
1761
1762 static int dhd_open(struct net_device *net)
1763 {
1764         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1765 #ifdef TOE
1766         u32 toe_ol;
1767 #endif
1768         int ifidx = dhd_net2idx(dhd, net);
1769         s32 ret = 0;
1770
1771         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1772
1773         if (ifidx == 0) {       /* do it only for primary eth0 */
1774
1775                 /* try to bring up bus */
1776                 ret = dhd_bus_start(&dhd->pub);
1777                 if (ret != 0) {
1778                         DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1779                         return -1;
1780                 }
1781                 atomic_set(&dhd->pend_8021x_cnt, 0);
1782
1783                 memcpy(net->dev_addr, dhd->pub.mac, ETH_ALEN);
1784
1785 #ifdef TOE
1786                 /* Get current TOE mode from dongle */
1787                 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1788                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
1789                         dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1790                 else
1791                         dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1792 #endif
1793         }
1794         /* Allow transmit calls */
1795         netif_start_queue(net);
1796         dhd->pub.up = 1;
1797         if (IS_CFG80211_FAVORITE()) {
1798                 if (unlikely(wl_cfg80211_up())) {
1799                         DHD_ERROR(("%s: failed to bring up cfg80211\n",
1800                                    __func__));
1801                         return -1;
1802                 }
1803         }
1804
1805         return ret;
1806 }
1807
1808 int
1809 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1810            u8 *mac_addr, u32 flags, u8 bssidx)
1811 {
1812         dhd_if_t *ifp;
1813
1814         DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1815
1816         ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1817
1818         ifp = dhd->iflist[ifidx];
1819         if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1820                 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1821                 return -ENOMEM;
1822         }
1823
1824         memset(ifp, 0, sizeof(dhd_if_t));
1825         ifp->info = dhd;
1826         dhd->iflist[ifidx] = ifp;
1827         strlcpy(ifp->name, name, IFNAMSIZ);
1828         if (mac_addr != NULL)
1829                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
1830
1831         if (handle == NULL) {
1832                 ifp->state = WLC_E_IF_ADD;
1833                 ifp->idx = ifidx;
1834                 ASSERT(dhd->sysioc_tsk);
1835                 up(&dhd->sysioc_sem);
1836         } else
1837                 ifp->net = (struct net_device *)handle;
1838
1839         return 0;
1840 }
1841
1842 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1843 {
1844         dhd_if_t *ifp;
1845
1846         DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1847
1848         ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1849         ifp = dhd->iflist[ifidx];
1850         if (!ifp) {
1851                 DHD_ERROR(("%s: Null interface\n", __func__));
1852                 return;
1853         }
1854
1855         ifp->state = WLC_E_IF_DEL;
1856         ifp->idx = ifidx;
1857         ASSERT(dhd->sysioc_tsk);
1858         up(&dhd->sysioc_sem);
1859 }
1860
1861 dhd_pub_t *dhd_attach(struct dhd_bus *bus, uint bus_hdrlen)
1862 {
1863         dhd_info_t *dhd = NULL;
1864         struct net_device *net;
1865
1866         DHD_TRACE(("%s: Enter\n", __func__));
1867         /* updates firmware nvram path if it was provided as module
1868                  paramters */
1869         if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1870                 strcpy(fw_path, firmware_path);
1871         if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1872                 strcpy(nv_path, nvram_path);
1873
1874         /* Allocate etherdev, including space for private structure */
1875         net = alloc_etherdev(sizeof(dhd));
1876         if (!net) {
1877                 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1878                 goto fail;
1879         }
1880
1881         /* Allocate primary dhd_info */
1882         dhd = kzalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1883         if (!dhd) {
1884                 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1885                 goto fail;
1886         }
1887
1888         /*
1889          * Save the dhd_info into the priv
1890          */
1891         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1892
1893         /* Set network interface name if it was provided as module parameter */
1894         if (iface_name[0]) {
1895                 int len;
1896                 char ch;
1897                 strncpy(net->name, iface_name, IFNAMSIZ);
1898                 net->name[IFNAMSIZ - 1] = 0;
1899                 len = strlen(net->name);
1900                 ch = net->name[len - 1];
1901                 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1902                         strcat(net->name, "%d");
1903         }
1904
1905         if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1906             DHD_BAD_IF)
1907                 goto fail;
1908
1909         net->netdev_ops = NULL;
1910         sema_init(&dhd->proto_sem, 1);
1911         /* Initialize other structure content */
1912         init_waitqueue_head(&dhd->ioctl_resp_wait);
1913         init_waitqueue_head(&dhd->ctrl_wait);
1914
1915         /* Initialize the spinlocks */
1916         spin_lock_init(&dhd->sdlock);
1917         spin_lock_init(&dhd->txqlock);
1918
1919         /* Link to info module */
1920         dhd->pub.info = dhd;
1921
1922         /* Link to bus module */
1923         dhd->pub.bus = bus;
1924         dhd->pub.hdrlen = bus_hdrlen;
1925
1926         /* Attach and link in the protocol */
1927         if (dhd_prot_attach(&dhd->pub) != 0) {
1928                 DHD_ERROR(("dhd_prot_attach failed\n"));
1929                 goto fail;
1930         }
1931 #if defined(CONFIG_WIRELESS_EXT)
1932         /* Attach and link in the iw */
1933         if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
1934                 DHD_ERROR(("wl_iw_attach failed\n"));
1935                 goto fail;
1936         }
1937 #endif  /* defined(CONFIG_WIRELESS_EXT) */
1938
1939         /* Attach and link in the cfg80211 */
1940         if (IS_CFG80211_FAVORITE()) {
1941                 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
1942                         DHD_ERROR(("wl_cfg80211_attach failed\n"));
1943                         goto fail;
1944                 }
1945                 if (!NO_FW_REQ()) {
1946                         strcpy(fw_path, wl_cfg80211_get_fwname());
1947                         strcpy(nv_path, wl_cfg80211_get_nvramname());
1948                 }
1949         }
1950
1951         /* Set up the watchdog timer */
1952         init_timer(&dhd->timer);
1953         dhd->timer.data = (unsigned long) dhd;
1954         dhd->timer.function = dhd_watchdog;
1955
1956         /* Initialize thread based operation and lock */
1957         sema_init(&dhd->sdsem, 1);
1958         if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
1959                 dhd->threads_only = true;
1960         else
1961                 dhd->threads_only = false;
1962
1963         if (dhd_dpc_prio >= 0) {
1964                 /* Initialize watchdog thread */
1965                 sema_init(&dhd->watchdog_sem, 0);
1966                 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
1967                                                 "dhd_watchdog");
1968                 if (IS_ERR(dhd->watchdog_tsk)) {
1969                         printk(KERN_WARNING
1970                                 "dhd_watchdog thread failed to start\n");
1971                         dhd->watchdog_tsk = NULL;
1972                 }
1973         } else {
1974                 dhd->watchdog_tsk = NULL;
1975         }
1976
1977         /* Set up the bottom half handler */
1978         if (dhd_dpc_prio >= 0) {
1979                 /* Initialize DPC thread */
1980                 sema_init(&dhd->dpc_sem, 0);
1981                 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
1982                 if (IS_ERR(dhd->dpc_tsk)) {
1983                         printk(KERN_WARNING
1984                                 "dhd_dpc thread failed to start\n");
1985                         dhd->dpc_tsk = NULL;
1986                 }
1987         } else {
1988                 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
1989                 dhd->dpc_tsk = NULL;
1990         }
1991
1992         if (dhd_sysioc) {
1993                 sema_init(&dhd->sysioc_sem, 0);
1994                 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
1995                                                 "_dhd_sysioc");
1996                 if (IS_ERR(dhd->sysioc_tsk)) {
1997                         printk(KERN_WARNING
1998                                 "_dhd_sysioc thread failed to start\n");
1999                         dhd->sysioc_tsk = NULL;
2000                 }
2001         } else
2002                 dhd->sysioc_tsk = NULL;
2003
2004         /*
2005          * Save the dhd_info into the priv
2006          */
2007         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2008
2009 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2010         g_bus = bus;
2011 #endif
2012 #if defined(CONFIG_PM_SLEEP)
2013         atomic_set(&dhd_mmc_suspend, false);
2014         if (!IS_CFG80211_FAVORITE())
2015                 register_pm_notifier(&dhd_sleep_pm_notifier);
2016 #endif  /* defined(CONFIG_PM_SLEEP) */
2017         /* && defined(DHD_GPL) */
2018         /* Init lock suspend to prevent kernel going to suspend */
2019 #ifdef CONFIG_HAS_EARLYSUSPEND
2020         dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
2021         dhd->early_suspend.suspend = dhd_early_suspend;
2022         dhd->early_suspend.resume = dhd_late_resume;
2023         register_early_suspend(&dhd->early_suspend);
2024 #endif
2025
2026         return &dhd->pub;
2027
2028 fail:
2029         if (net)
2030                 free_netdev(net);
2031         if (dhd)
2032                 dhd_detach(&dhd->pub);
2033
2034         return NULL;
2035 }
2036
2037 int dhd_bus_start(dhd_pub_t *dhdp)
2038 {
2039         int ret = -1;
2040         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2041 #ifdef EMBEDDED_PLATFORM
2042         char iovbuf[WL_EVENTING_MASK_LEN + 12]; /*  Room for "event_msgs" +
2043                                                  '\0' + bitvec  */
2044 #endif                          /* EMBEDDED_PLATFORM */
2045
2046         ASSERT(dhd);
2047
2048         DHD_TRACE(("%s:\n", __func__));
2049
2050         /* try to download image and nvram to the dongle */
2051         if (dhd->pub.busstate == DHD_BUS_DOWN) {
2052                 if (!(dhd_bus_download_firmware(dhd->pub.bus,
2053                                                 fw_path, nv_path))) {
2054                         DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2055                                 "firmware = %s nvram = %s\n",
2056                                 __func__, fw_path, nv_path));
2057                         return -1;
2058                 }
2059         }
2060
2061         /* Start the watchdog timer */
2062         dhd->pub.tickcnt = 0;
2063         dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2064
2065         /* Bring up the bus */
2066         ret = dhd_bus_init(&dhd->pub, true);
2067         if (ret != 0) {
2068                 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2069                 return ret;
2070         }
2071 #if defined(OOB_INTR_ONLY)
2072         /* Host registration for OOB interrupt */
2073         if (bcmsdh_register_oob_intr(dhdp)) {
2074                 del_timer_sync(&dhd->timer);
2075                 dhd->wd_timer_valid = false;
2076                 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2077                 return -ENODEV;
2078         }
2079
2080         /* Enable oob at firmware */
2081         dhd_enable_oob_intr(dhd->pub.bus, true);
2082 #endif                          /* defined(OOB_INTR_ONLY) */
2083
2084         /* If bus is not ready, can't come up */
2085         if (dhd->pub.busstate != DHD_BUS_DATA) {
2086                 del_timer_sync(&dhd->timer);
2087                 dhd->wd_timer_valid = false;
2088                 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2089                 return -ENODEV;
2090         }
2091 #ifdef EMBEDDED_PLATFORM
2092         bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
2093                     sizeof(iovbuf));
2094         dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2095         memcpy(dhdp->eventmask, iovbuf, WL_EVENTING_MASK_LEN);
2096
2097         setbit(dhdp->eventmask, WLC_E_SET_SSID);
2098         setbit(dhdp->eventmask, WLC_E_PRUNE);
2099         setbit(dhdp->eventmask, WLC_E_AUTH);
2100         setbit(dhdp->eventmask, WLC_E_REASSOC);
2101         setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2102         setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2103         setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2104         setbit(dhdp->eventmask, WLC_E_DISASSOC);
2105         setbit(dhdp->eventmask, WLC_E_JOIN);
2106         setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2107         setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2108         setbit(dhdp->eventmask, WLC_E_LINK);
2109         setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2110         setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2111         setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2112         setbit(dhdp->eventmask, WLC_E_TXFAIL);
2113         setbit(dhdp->eventmask, WLC_E_JOIN_START);
2114         setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2115 #ifdef PNO_SUPPORT
2116         setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2117 #endif                          /* PNO_SUPPORT */
2118
2119 /* enable dongle roaming event */
2120
2121         dhdp->pktfilter_count = 1;
2122         /* Setup filter to allow only unicast */
2123         dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2124 #endif                          /* EMBEDDED_PLATFORM */
2125
2126         /* Bus is ready, do any protocol initialization */
2127         ret = dhd_prot_init(&dhd->pub);
2128         if (ret < 0)
2129                 return ret;
2130
2131         return 0;
2132 }
2133
2134 int
2135 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2136           int set)
2137 {
2138         char buf[strlen(name) + 1 + cmd_len];
2139         int len = sizeof(buf);
2140         wl_ioctl_t ioc;
2141         int ret;
2142
2143         len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);
2144
2145         memset(&ioc, 0, sizeof(ioc));
2146
2147         ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2148         ioc.buf = buf;
2149         ioc.len = len;
2150         ioc.set = set;
2151
2152         ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2153         if (!set && ret >= 0)
2154                 memcpy(cmd_buf, buf, cmd_len);
2155
2156         return ret;
2157 }
2158
2159 static struct net_device_ops dhd_ops_pri = {
2160         .ndo_open = dhd_open,
2161         .ndo_stop = dhd_stop,
2162         .ndo_get_stats = dhd_get_stats,
2163         .ndo_do_ioctl = dhd_ioctl_entry,
2164         .ndo_start_xmit = dhd_start_xmit,
2165         .ndo_set_mac_address = dhd_set_mac_address,
2166         .ndo_set_multicast_list = dhd_set_multicast_list
2167 };
2168
2169 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2170 {
2171         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2172         struct net_device *net;
2173         u8 temp_addr[ETH_ALEN] = {
2174                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2175
2176         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2177
2178         ASSERT(dhd && dhd->iflist[ifidx]);
2179
2180         net = dhd->iflist[ifidx]->net;
2181         ASSERT(net);
2182
2183         ASSERT(!net->netdev_ops);
2184         net->netdev_ops = &dhd_ops_pri;
2185
2186         /*
2187          * We have to use the primary MAC for virtual interfaces
2188          */
2189         if (ifidx != 0) {
2190                 /* for virtual interfaces use the primary MAC  */
2191                 memcpy(temp_addr, dhd->pub.mac, ETH_ALEN);
2192
2193         }
2194
2195         if (ifidx == 1) {
2196                 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2197                 /*  ACCESSPOINT INTERFACE CASE */
2198                 temp_addr[0] |= 0X02;   /* set bit 2 ,
2199                          - Locally Administered address  */
2200
2201         }
2202         net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2203         net->ethtool_ops = &dhd_ethtool_ops;
2204
2205         dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2206
2207         memcpy(net->dev_addr, temp_addr, ETH_ALEN);
2208
2209         if (register_netdev(net) != 0) {
2210                 DHD_ERROR(("%s: couldn't register the net device\n",
2211                         __func__));
2212                 goto fail;
2213         }
2214
2215         DHD_INFO(("%s: Broadcom Dongle Host Driver\n", net->name));
2216
2217         return 0;
2218
2219 fail:
2220         net->netdev_ops = NULL;
2221         return -EBADE;
2222 }
2223
2224 void dhd_bus_detach(dhd_pub_t *dhdp)
2225 {
2226         dhd_info_t *dhd;
2227
2228         DHD_TRACE(("%s: Enter\n", __func__));
2229
2230         if (dhdp) {
2231                 dhd = (dhd_info_t *) dhdp->info;
2232                 if (dhd) {
2233                         /* Stop the protocol module */
2234                         dhd_prot_stop(&dhd->pub);
2235
2236                         /* Stop the bus module */
2237                         dhd_bus_stop(dhd->pub.bus, true);
2238 #if defined(OOB_INTR_ONLY)
2239                         bcmsdh_unregister_oob_intr();
2240 #endif                          /* defined(OOB_INTR_ONLY) */
2241
2242                         /* Clear the watchdog timer */
2243                         del_timer_sync(&dhd->timer);
2244                         dhd->wd_timer_valid = false;
2245                 }
2246         }
2247 }
2248
2249 void dhd_detach(dhd_pub_t *dhdp)
2250 {
2251         dhd_info_t *dhd;
2252
2253         DHD_TRACE(("%s: Enter\n", __func__));
2254
2255         if (dhdp) {
2256                 dhd = (dhd_info_t *) dhdp->info;
2257                 if (dhd) {
2258                         dhd_if_t *ifp;
2259                         int i;
2260
2261 #if defined(CONFIG_HAS_EARLYSUSPEND)
2262                         if (dhd->early_suspend.suspend)
2263                                 unregister_early_suspend(&dhd->early_suspend);
2264 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2265
2266                         for (i = 1; i < DHD_MAX_IFS; i++)
2267                                 if (dhd->iflist[i])
2268                                         dhd_del_if(dhd, i);
2269
2270                         ifp = dhd->iflist[0];
2271                         ASSERT(ifp);
2272                         if (ifp->net->netdev_ops == &dhd_ops_pri) {
2273                                 dhd_stop(ifp->net);
2274                                 unregister_netdev(ifp->net);
2275                         }
2276
2277                         if (dhd->watchdog_tsk) {
2278                                 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2279                                 kthread_stop(dhd->watchdog_tsk);
2280                                 dhd->watchdog_tsk = NULL;
2281                         }
2282
2283                         if (dhd->dpc_tsk) {
2284                                 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2285                                 kthread_stop(dhd->dpc_tsk);
2286                                 dhd->dpc_tsk = NULL;
2287                         } else
2288                                 tasklet_kill(&dhd->tasklet);
2289
2290                         if (dhd->sysioc_tsk) {
2291                                 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2292                                 kthread_stop(dhd->sysioc_tsk);
2293                                 dhd->sysioc_tsk = NULL;
2294                         }
2295
2296                         dhd_bus_detach(dhdp);
2297
2298                         if (dhdp->prot)
2299                                 dhd_prot_detach(dhdp);
2300
2301 #if defined(CONFIG_WIRELESS_EXT)
2302                         wl_iw_detach();
2303 #endif                          /* (CONFIG_WIRELESS_EXT) */
2304
2305                         if (IS_CFG80211_FAVORITE())
2306                                 wl_cfg80211_detach();
2307
2308 #if defined(CONFIG_PM_SLEEP)
2309                         if (!IS_CFG80211_FAVORITE())
2310                                 unregister_pm_notifier(&dhd_sleep_pm_notifier);
2311 #endif  /* defined(CONFIG_PM_SLEEP) */
2312                         /* && defined(DHD_GPL) */
2313                         free_netdev(ifp->net);
2314                         kfree(ifp);
2315                         kfree(dhd);
2316                 }
2317         }
2318 }
2319
2320 static void __exit dhd_module_cleanup(void)
2321 {
2322         DHD_TRACE(("%s: Enter\n", __func__));
2323
2324         dhd_bus_unregister();
2325 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2326         wifi_del_dev();
2327 #endif
2328         /* Call customer gpio to turn off power with WL_REG_ON signal */
2329         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2330 }
2331
2332 static int __init dhd_module_init(void)
2333 {
2334         int error;
2335
2336         DHD_TRACE(("%s: Enter\n", __func__));
2337
2338         /* Sanity check on the module parameters */
2339         do {
2340                 /* Both watchdog and DPC as tasklets are ok */
2341                 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2342                         break;
2343
2344                 /* If both watchdog and DPC are threads, TX must be deferred */
2345                 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2346                     && dhd_deferred_tx)
2347                         break;
2348
2349                 DHD_ERROR(("Invalid module parameters.\n"));
2350                 return -EINVAL;
2351         } while (0);
2352         /* Call customer gpio to turn on power with WL_REG_ON signal */
2353         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2354
2355 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2356         sema_init(&wifi_control_sem, 0);
2357
2358         error = wifi_add_dev();
2359         if (error) {
2360                 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2361                 goto failed;
2362         }
2363
2364         /* Waiting callback after platform_driver_register is done or
2365                  exit with error */
2366         if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2367                 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2368                         __func__);
2369                 /* remove device */
2370                 wifi_del_dev();
2371                 goto failed;
2372         }
2373 #endif  /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2374
2375         error = dhd_bus_register();
2376
2377         if (error) {
2378                 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2379                 goto failed;
2380         }
2381         return error;
2382
2383 failed:
2384         /* turn off power and exit */
2385         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2386         return -EINVAL;
2387 }
2388
2389 module_init(dhd_module_init);
2390 module_exit(dhd_module_cleanup);
2391
2392 /*
2393  * OS specific functions required to implement DHD driver in OS independent way
2394  */
2395 int dhd_os_proto_block(dhd_pub_t *pub)
2396 {
2397         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2398
2399         if (dhd) {
2400                 down(&dhd->proto_sem);
2401                 return 1;
2402         }
2403         return 0;
2404 }
2405
2406 int dhd_os_proto_unblock(dhd_pub_t *pub)
2407 {
2408         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2409
2410         if (dhd) {
2411                 up(&dhd->proto_sem);
2412                 return 1;
2413         }
2414
2415         return 0;
2416 }
2417
2418 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2419 {
2420         return (unsigned int)dhd_ioctl_timeout_msec;
2421 }
2422
2423 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2424 {
2425         dhd_ioctl_timeout_msec = (int)timeout_msec;
2426 }
2427
2428 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2429 {
2430         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2431         DECLARE_WAITQUEUE(wait, current);
2432         int timeout = dhd_ioctl_timeout_msec;
2433
2434         /* Convert timeout in millsecond to jiffies */
2435         timeout = timeout * HZ / 1000;
2436
2437         /* Wait until control frame is available */
2438         add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2439         set_current_state(TASK_INTERRUPTIBLE);
2440
2441         while (!(*condition) && (!signal_pending(current) && timeout))
2442                 timeout = schedule_timeout(timeout);
2443
2444         if (signal_pending(current))
2445                 *pending = true;
2446
2447         set_current_state(TASK_RUNNING);
2448         remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2449
2450         return timeout;
2451 }
2452
2453 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2454 {
2455         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2456
2457         if (waitqueue_active(&dhd->ioctl_resp_wait))
2458                 wake_up_interruptible(&dhd->ioctl_resp_wait);
2459
2460         return 0;
2461 }
2462
2463 void dhd_os_wd_timer(void *bus, uint wdtick)
2464 {
2465         dhd_pub_t *pub = bus;
2466         static uint save_dhd_watchdog_ms;
2467         dhd_info_t *dhd = (dhd_info_t *) pub->info;
2468
2469         /* don't start the wd until fw is loaded */
2470         if (pub->busstate == DHD_BUS_DOWN)
2471                 return;
2472
2473         /* Totally stop the timer */
2474         if (!wdtick && dhd->wd_timer_valid == true) {
2475                 del_timer_sync(&dhd->timer);
2476                 dhd->wd_timer_valid = false;
2477                 save_dhd_watchdog_ms = wdtick;
2478                 return;
2479         }
2480
2481         if (wdtick) {
2482                 dhd_watchdog_ms = (uint) wdtick;
2483
2484                 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2485
2486                         if (dhd->wd_timer_valid == true)
2487                                 /* Stop timer and restart at new value */
2488                                 del_timer_sync(&dhd->timer);
2489
2490                         /* Create timer again when watchdog period is
2491                            dynamically changed or in the first instance
2492                          */
2493                         dhd->timer.expires =
2494                             jiffies + dhd_watchdog_ms * HZ / 1000;
2495                         add_timer(&dhd->timer);
2496
2497                 } else {
2498                         /* Re arm the timer, at last watchdog period */
2499                         mod_timer(&dhd->timer,
2500                                   jiffies + dhd_watchdog_ms * HZ / 1000);
2501                 }
2502
2503                 dhd->wd_timer_valid = true;
2504                 save_dhd_watchdog_ms = wdtick;
2505         }
2506 }
2507
2508 void *dhd_os_open_image(char *filename)
2509 {
2510         struct file *fp;
2511
2512         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2513                 return wl_cfg80211_request_fw(filename);
2514
2515         fp = filp_open(filename, O_RDONLY, 0);
2516         /*
2517          * 2.6.11 (FC4) supports filp_open() but later revs don't?
2518          * Alternative:
2519          * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2520          * ???
2521          */
2522         if (IS_ERR(fp))
2523                 fp = NULL;
2524
2525         return fp;
2526 }
2527
2528 int dhd_os_get_image_block(char *buf, int len, void *image)
2529 {
2530         struct file *fp = (struct file *)image;
2531         int rdlen;
2532
2533         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2534                 return wl_cfg80211_read_fw(buf, len);
2535
2536         if (!image)
2537                 return 0;
2538
2539         rdlen = kernel_read(fp, fp->f_pos, buf, len);
2540         if (rdlen > 0)
2541                 fp->f_pos += rdlen;
2542
2543         return rdlen;
2544 }
2545
2546 void dhd_os_close_image(void *image)
2547 {
2548         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2549                 return wl_cfg80211_release_fw();
2550         if (image)
2551                 filp_close((struct file *)image, NULL);
2552 }
2553
2554 void dhd_os_sdlock(dhd_pub_t *pub)
2555 {
2556         dhd_info_t *dhd;
2557
2558         dhd = (dhd_info_t *) (pub->info);
2559
2560         if (dhd->threads_only)
2561                 down(&dhd->sdsem);
2562         else
2563                 spin_lock_bh(&dhd->sdlock);
2564 }
2565
2566 void dhd_os_sdunlock(dhd_pub_t *pub)
2567 {
2568         dhd_info_t *dhd;
2569
2570         dhd = (dhd_info_t *) (pub->info);
2571
2572         if (dhd->threads_only)
2573                 up(&dhd->sdsem);
2574         else
2575                 spin_unlock_bh(&dhd->sdlock);
2576 }
2577
2578 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2579 {
2580         dhd_info_t *dhd;
2581
2582         dhd = (dhd_info_t *) (pub->info);
2583         spin_lock_bh(&dhd->txqlock);
2584 }
2585
2586 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2587 {
2588         dhd_info_t *dhd;
2589
2590         dhd = (dhd_info_t *) (pub->info);
2591         spin_unlock_bh(&dhd->txqlock);
2592 }
2593
2594 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2595 {
2596 }
2597
2598 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2599 {
2600 }
2601
2602 void dhd_os_sdtxlock(dhd_pub_t *pub)
2603 {
2604         dhd_os_sdlock(pub);
2605 }
2606
2607 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2608 {
2609         dhd_os_sdunlock(pub);
2610 }
2611
2612 static int
2613 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2614                   wl_event_msg_t *event, void **data)
2615 {
2616         int bcmerror = 0;
2617
2618         ASSERT(dhd != NULL);
2619
2620         bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2621         if (bcmerror != 0)
2622                 return bcmerror;
2623
2624 #if defined(CONFIG_WIRELESS_EXT)
2625         if (!IS_CFG80211_FAVORITE()) {
2626                 if ((dhd->iflist[*ifidx] == NULL)
2627                     || (dhd->iflist[*ifidx]->net == NULL)) {
2628                         DHD_ERROR(("%s Exit null pointer\n", __func__));
2629                         return bcmerror;
2630                 }
2631
2632                 if (dhd->iflist[*ifidx]->net)
2633                         wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2634         }
2635 #endif                          /* defined(CONFIG_WIRELESS_EXT)  */
2636
2637         if (IS_CFG80211_FAVORITE()) {
2638                 ASSERT(dhd->iflist[*ifidx] != NULL);
2639                 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2640                 if (dhd->iflist[*ifidx]->net)
2641                         wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2642                                           *data);
2643         }
2644
2645         return bcmerror;
2646 }
2647
2648 /* send up locally generated event */
2649 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2650 {
2651         switch (be32_to_cpu(event->event_type)) {
2652         default:
2653                 break;
2654         }
2655 }
2656
2657 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2658 {
2659         struct dhd_info *dhdinfo = dhd->info;
2660         dhd_os_sdunlock(dhd);
2661         wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2662                                          (*lockvar == false), HZ * 2);
2663         dhd_os_sdlock(dhd);
2664         return;
2665 }
2666
2667 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2668 {
2669         struct dhd_info *dhdinfo = dhd->info;
2670         if (waitqueue_active(&dhdinfo->ctrl_wait))
2671                 wake_up_interruptible(&dhdinfo->ctrl_wait);
2672         return;
2673 }
2674
2675 int dhd_dev_reset(struct net_device *dev, u8 flag)
2676 {
2677         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2678
2679         /* Turning off watchdog */
2680         if (flag)
2681                 dhd_os_wd_timer(&dhd->pub, 0);
2682
2683         dhd_bus_devreset(&dhd->pub, flag);
2684
2685         /* Turning on watchdog back */
2686         if (!flag)
2687                 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2688         DHD_ERROR(("%s:  WLAN OFF DONE\n", __func__));
2689
2690         return 1;
2691 }
2692
2693 int net_os_set_suspend_disable(struct net_device *dev, int val)
2694 {
2695         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2696         int ret = 0;
2697
2698         if (dhd) {
2699                 ret = dhd->pub.suspend_disable_flag;
2700                 dhd->pub.suspend_disable_flag = val;
2701         }
2702         return ret;
2703 }
2704
2705 int net_os_set_suspend(struct net_device *dev, int val)
2706 {
2707         int ret = 0;
2708 #if defined(CONFIG_HAS_EARLYSUSPEND)
2709         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2710
2711         if (dhd) {
2712                 dhd_os_proto_block(&dhd->pub);
2713                 ret = dhd_set_suspend(val, &dhd->pub);
2714                 dhd_os_proto_unblock(&dhd->pub);
2715         }
2716 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2717         return ret;
2718 }
2719
2720 int net_os_set_dtim_skip(struct net_device *dev, int val)
2721 {
2722         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2723
2724         if (dhd)
2725                 dhd->pub.dtim_skip = val;
2726
2727         return 0;
2728 }
2729
2730 int net_os_set_packet_filter(struct net_device *dev, int val)
2731 {
2732         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2733         int ret = 0;
2734
2735         /* Packet filtering is set only if we still in early-suspend and
2736          * we need either to turn it ON or turn it OFF
2737          * We can always turn it OFF in case of early-suspend, but we turn it
2738          * back ON only if suspend_disable_flag was not set
2739          */
2740         if (dhd && dhd->pub.up) {
2741                 dhd_os_proto_block(&dhd->pub);
2742                 if (dhd->pub.in_suspend) {
2743                         if (!val || (val && !dhd->pub.suspend_disable_flag))
2744                                 dhd_set_packet_filter(val, &dhd->pub);
2745                 }
2746                 dhd_os_proto_unblock(&dhd->pub);
2747         }
2748         return ret;
2749 }
2750
2751 void dhd_dev_init_ioctl(struct net_device *dev)
2752 {
2753         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2754
2755         dhd_preinit_ioctls(&dhd->pub);
2756 }
2757
2758 #ifdef PNO_SUPPORT
2759 /* Linux wrapper to call common dhd_pno_clean */
2760 int dhd_dev_pno_reset(struct net_device *dev)
2761 {
2762         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2763
2764         return dhd_pno_clean(&dhd->pub);
2765 }
2766
2767 /* Linux wrapper to call common dhd_pno_enable */
2768 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2769 {
2770         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2771
2772         return dhd_pno_enable(&dhd->pub, pfn_enabled);
2773 }
2774
2775 /* Linux wrapper to call common dhd_pno_set */
2776 int
2777 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2778                 unsigned char scan_fr)
2779 {
2780         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2781
2782         return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2783 }
2784
2785 /* Linux wrapper to get  pno status */
2786 int dhd_dev_get_pno_status(struct net_device *dev)
2787 {
2788         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2789
2790         return dhd_pno_get_status(&dhd->pub);
2791 }
2792
2793 #endif                          /* PNO_SUPPORT */
2794
2795 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2796 {
2797         return atomic_read(&dhd->pend_8021x_cnt);
2798 }
2799
2800 #define MAX_WAIT_FOR_8021X_TX   10
2801
2802 int dhd_wait_pend8021x(struct net_device *dev)
2803 {
2804         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2805         int timeout = 10 * HZ / 1000;
2806         int ntimes = MAX_WAIT_FOR_8021X_TX;
2807         int pend = dhd_get_pend_8021x_cnt(dhd);
2808
2809         while (ntimes && pend) {
2810                 if (pend) {
2811                         set_current_state(TASK_INTERRUPTIBLE);
2812                         schedule_timeout(timeout);
2813                         set_current_state(TASK_RUNNING);
2814                         ntimes--;
2815                 }
2816                 pend = dhd_get_pend_8021x_cnt(dhd);
2817         }
2818         return pend;
2819 }
2820
2821 void wl_os_wd_timer(struct net_device *ndev, uint wdtick)
2822 {
2823         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(ndev);
2824
2825         dhd_os_wd_timer(&dhd->pub, wdtick);
2826 }
2827
2828 #ifdef DHD_DEBUG
2829 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2830 {
2831         int ret = 0;
2832         struct file *fp;
2833         mm_segment_t old_fs;
2834         loff_t pos = 0;
2835
2836         /* change to KERNEL_DS address limit */
2837         old_fs = get_fs();
2838         set_fs(KERNEL_DS);
2839
2840         /* open file to write */
2841         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2842         if (!fp) {
2843                 DHD_ERROR(("%s: open file error\n", __func__));
2844                 ret = -1;
2845                 goto exit;
2846         }
2847
2848         /* Write buf to file */
2849         fp->f_op->write(fp, buf, size, &pos);
2850
2851 exit:
2852         /* free buf before return */
2853         kfree(buf);
2854         /* close file before return */
2855         if (fp)
2856                 filp_close(fp, current->files);
2857         /* restore previous address limit */
2858         set_fs(old_fs);
2859
2860         return ret;
2861 }
2862 #endif                          /* DHD_DEBUG */