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 volatile bool dhd_mmc_suspend = false;
 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];
 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 #if defined(CONFIG_WIRELESS_EXT)
 389 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev);
 390 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
 391
 392 static void dhd_dpc(unsigned long data);
 393 /* forward decl */
 394 extern int dhd_wait_pend8021x(struct net_device *dev);
 395
 396 #ifdef TOE
 397 #ifndef BDC
 398 #error TOE requires BDC
 399 #endif                          /* !BDC */
 400 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
 401 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
 402 #endif                          /* TOE */
 403
 404 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
 405                              wl_event_msg_t *event_ptr, void **data_ptr);
 406
 407 #if defined(CONFIG_PM_SLEEP)
 408 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
 409                                  unsigned long action, void *ignored)
 410 {
 411         switch (action) {
 412         case PM_HIBERNATION_PREPARE:
 413         case PM_SUSPEND_PREPARE:
 414                 dhd_mmc_suspend = true;
 415                 return NOTIFY_OK;
 416         case PM_POST_HIBERNATION:
 417         case PM_POST_SUSPEND:
 418                 dhd_mmc_suspend = false;
 419                 return NOTIFY_OK;
 420         }
 421         return 0;
 422 }
 423
 424 static struct notifier_block dhd_sleep_pm_notifier = {
 425         .notifier_call = dhd_sleep_pm_callback,
 426         .priority = 0
 427 };
 428
 429 extern int register_pm_notifier(struct notifier_block *nb);
 430 extern int unregister_pm_notifier(struct notifier_block *nb);
 431 #endif  /* defined(CONFIG_PM_SLEEP) */
 432         /* && defined(DHD_GPL) */
 433 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
 434 {
 435 #ifdef PKT_FILTER_SUPPORT
 436         DHD_TRACE(("%s: %d\n", __func__, value));
 437         /* 1 - Enable packet filter, only allow unicast packet to send up */
 438         /* 0 - Disable packet filter */
 439         if (dhd_pkt_filter_enable) {
 440                 int i;
 441
 442                 for (i = 0; i < dhd->pktfilter_count; i++) {
 443                         dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
 444                         dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
 445                                                      value, dhd_master_mode);
 446                 }
 447         }
 448 #endif
 449 }
 450
 451 #if defined(CONFIG_HAS_EARLYSUSPEND)
 452 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
 453 {
 454         int power_mode = PM_MAX;
 455         /* wl_pkt_filter_enable_t       enable_parm; */
 456         char iovbuf[32];
 457         int bcn_li_dtim = 3;
 458 #ifdef CUSTOMER_HW2
 459         uint roamvar = 1;
 460 #endif                          /* CUSTOMER_HW2 */
 461
 462         DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
 463                    __func__, value, dhd->in_suspend));
 464
 465         if (dhd && dhd->up) {
 466                 if (value && dhd->in_suspend) {
 467
 468                         /* Kernel suspended */
 469                         DHD_TRACE(("%s: force extra Suspend setting\n",
 470                                    __func__));
 471
 472                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 473                                          (char *)&power_mode,
 474                                          sizeof(power_mode));
 475
 476                         /* Enable packet filter, only allow unicast
 477                                  packet to send up */
 478                         dhd_set_packet_filter(1, dhd);
 479
 480                         /* if dtim skip setup as default force it
 481                          * to wake each third dtim
 482                          * for better power saving.
 483                          * Note that side effect is chance to miss BC/MC
 484                          * packet
 485                          */
 486                         if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
 487                                 bcn_li_dtim = 3;
 488                         else
 489                                 bcn_li_dtim = dhd->dtim_skip;
 490                         bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
 491                                     4, iovbuf, sizeof(iovbuf));
 492                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 493                                          sizeof(iovbuf));
 494 #ifdef CUSTOMER_HW2
 495                         /* Disable build-in roaming to allowed \
 496                          * supplicant to take of romaing
 497                          */
 498                         bcm_mkiovar("roam_off", (char *)&roamvar, 4,
 499                                     iovbuf, sizeof(iovbuf));
 500                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 501                                          sizeof(iovbuf));
 502 #endif                          /* CUSTOMER_HW2 */
 503                 } else {
 504
 505                         /* Kernel resumed  */
 506                         DHD_TRACE(("%s: Remove extra suspend setting\n",
 507                                    __func__));
 508
 509                         power_mode = PM_FAST;
 510                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 511                                          (char *)&power_mode,
 512                                          sizeof(power_mode));
 513
 514                         /* disable pkt filter */
 515                         dhd_set_packet_filter(0, dhd);
 516
 517                         /* restore pre-suspend setting for dtim_skip */
 518                         bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
 519                                     4, iovbuf, sizeof(iovbuf));
 520
 521                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 522                                          sizeof(iovbuf));
 523 #ifdef CUSTOMER_HW2
 524                         roamvar = 0;
 525                         bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
 526                                     sizeof(iovbuf));
 527                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 528                                          sizeof(iovbuf));
 529 #endif                          /* CUSTOMER_HW2 */
 530                 }
 531         }
 532
 533         return 0;
 534 }
 535
 536 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
 537 {
 538         dhd_pub_t *dhdp = &dhd->pub;
 539
 540         dhd_os_proto_block(dhdp);
 541         /* Set flag when early suspend was called */
 542         dhdp->in_suspend = val;
 543         if (!dhdp->suspend_disable_flag)
 544                 dhd_set_suspend(val, dhdp);
 545         dhd_os_proto_unblock(dhdp);
 546 }
 547
 548 static void dhd_early_suspend(struct early_suspend *h)
 549 {
 550         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 551
 552         DHD_TRACE(("%s: enter\n", __func__));
 553
 554         if (dhd)
 555                 dhd_suspend_resume_helper(dhd, 1);
 556
 557 }
 558
 559 static void dhd_late_resume(struct early_suspend *h)
 560 {
 561         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 562
 563         DHD_TRACE(("%s: enter\n", __func__));
 564
 565         if (dhd)
 566                 dhd_suspend_resume_helper(dhd, 0);
 567 }
 568 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 569
 570 /*
 571  * Generalized timeout mechanism.  Uses spin sleep with exponential
 572  * back-off until
 573  * the sleep time reaches one jiffy, then switches over to task delay.  Usage:
 574  *
 575  *      dhd_timeout_start(&tmo, usec);
 576  *      while (!dhd_timeout_expired(&tmo))
 577  *              if (poll_something())
 578  *                      break;
 579  *      if (dhd_timeout_expired(&tmo))
 580  *              fatal();
 581  */
 582
 583 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
 584 {
 585         tmo->limit = usec;
 586         tmo->increment = 0;
 587         tmo->elapsed = 0;
 588         tmo->tick = 1000000 / HZ;
 589 }
 590
 591 int dhd_timeout_expired(dhd_timeout_t *tmo)
 592 {
 593         /* Does nothing the first call */
 594         if (tmo->increment == 0) {
 595                 tmo->increment = 1;
 596                 return 0;
 597         }
 598
 599         if (tmo->elapsed >= tmo->limit)
 600                 return 1;
 601
 602         /* Add the delay that's about to take place */
 603         tmo->elapsed += tmo->increment;
 604
 605         if (tmo->increment < tmo->tick) {
 606                 udelay(tmo->increment);
 607                 tmo->increment *= 2;
 608                 if (tmo->increment > tmo->tick)
 609                         tmo->increment = tmo->tick;
 610         } else {
 611                 wait_queue_head_t delay_wait;
 612                 DECLARE_WAITQUEUE(wait, current);
 613                 int pending;
 614                 init_waitqueue_head(&delay_wait);
 615                 add_wait_queue(&delay_wait, &wait);
 616                 set_current_state(TASK_INTERRUPTIBLE);
 617                 schedule_timeout(1);
 618                 pending = signal_pending(current);
 619                 remove_wait_queue(&delay_wait, &wait);
 620                 set_current_state(TASK_RUNNING);
 621                 if (pending)
 622                         return 1;       /* Interrupted */
 623         }
 624
 625         return 0;
 626 }
 627
 628 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
 629 {
 630         int i = 0;
 631
 632         ASSERT(dhd);
 633         while (i < DHD_MAX_IFS) {
 634                 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
 635                         return i;
 636                 i++;
 637         }
 638
 639         return DHD_BAD_IF;
 640 }
 641
 642 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
 643 {
 644         int i = DHD_MAX_IFS;
 645
 646         ASSERT(dhd);
 647
 648         if (name == NULL || *name == '\0')
 649                 return 0;
 650
 651         while (--i > 0)
 652                 if (dhd->iflist[i]
 653                     && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
 654                         break;
 655
 656         DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
 657
 658         return i;               /* default - the primary interface */
 659 }
 660
 661 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
 662 {
 663         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
 664
 665         ASSERT(dhd);
 666
 667         if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
 668                 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
 669                 return "<if_bad>";
 670         }
 671
 672         if (dhd->iflist[ifidx] == NULL) {
 673                 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
 674                 return "<if_null>";
 675         }
 676
 677         if (dhd->iflist[ifidx]->net)
 678                 return dhd->iflist[ifidx]->net->name;
 679
 680         return "<if_none>";
 681 }
 682
 683 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
 684 {
 685         struct net_device *dev;
 686         struct netdev_hw_addr *ha;
 687         u32 allmulti, cnt;
 688
 689         wl_ioctl_t ioc;
 690         char *buf, *bufp;
 691         uint buflen;
 692         int ret;
 693
 694         ASSERT(dhd && dhd->iflist[ifidx]);
 695         dev = dhd->iflist[ifidx]->net;
 696         cnt = netdev_mc_count(dev);
 697
 698         /* Determine initial value of allmulti flag */
 699         allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
 700
 701         /* Send down the multicast list first. */
 702
 703         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
 704         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 705         if (!bufp) {
 706                 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
 707                            dhd_ifname(&dhd->pub, ifidx), cnt));
 708                 return;
 709         }
 710
 711         strcpy(bufp, "mcast_list");
 712         bufp += strlen("mcast_list") + 1;
 713
 714         cnt = cpu_to_le32(cnt);
 715         memcpy(bufp, &cnt, sizeof(cnt));
 716         bufp += sizeof(cnt);
 717
 718         netdev_for_each_mc_addr(ha, dev) {
 719                 if (!cnt)
 720                         break;
 721                 memcpy(bufp, ha->addr, ETH_ALEN);
 722                 bufp += ETH_ALEN;
 723                 cnt--;
 724         }
 725
 726         memset(&ioc, 0, sizeof(ioc));
 727         ioc.cmd = WLC_SET_VAR;
 728         ioc.buf = buf;
 729         ioc.len = buflen;
 730         ioc.set = true;
 731
 732         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 733         if (ret < 0) {
 734                 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
 735                            dhd_ifname(&dhd->pub, ifidx), cnt));
 736                 allmulti = cnt ? true : allmulti;
 737         }
 738
 739         kfree(buf);
 740
 741         /* Now send the allmulti setting.  This is based on the setting in the
 742          * net_device flags, but might be modified above to be turned on if we
 743          * were trying to set some addresses and dongle rejected it...
 744          */
 745
 746         buflen = sizeof("allmulti") + sizeof(allmulti);
 747         buf = kmalloc(buflen, GFP_ATOMIC);
 748         if (!buf) {
 749                 DHD_ERROR(("%s: out of memory for allmulti\n",
 750                            dhd_ifname(&dhd->pub, ifidx)));
 751                 return;
 752         }
 753         allmulti = cpu_to_le32(allmulti);
 754
 755         if (!bcm_mkiovar
 756             ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
 757                 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
 758                         "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
 759                         (int)sizeof(allmulti), buflen));
 760                 kfree(buf);
 761                 return;
 762         }
 763
 764         memset(&ioc, 0, sizeof(ioc));
 765         ioc.cmd = WLC_SET_VAR;
 766         ioc.buf = buf;
 767         ioc.len = buflen;
 768         ioc.set = true;
 769
 770         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 771         if (ret < 0) {
 772                 DHD_ERROR(("%s: set allmulti %d failed\n",
 773                            dhd_ifname(&dhd->pub, ifidx),
 774                            le32_to_cpu(allmulti)));
 775         }
 776
 777         kfree(buf);
 778
 779         /* Finally, pick up the PROMISC flag as well, like the NIC
 780                  driver does */
 781
 782         allmulti = (dev->flags & IFF_PROMISC) ? true : false;
 783         allmulti = cpu_to_le32(allmulti);
 784
 785         memset(&ioc, 0, sizeof(ioc));
 786         ioc.cmd = WLC_SET_PROMISC;
 787         ioc.buf = &allmulti;
 788         ioc.len = sizeof(allmulti);
 789         ioc.set = true;
 790
 791         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 792         if (ret < 0) {
 793                 DHD_ERROR(("%s: set promisc %d failed\n",
 794                            dhd_ifname(&dhd->pub, ifidx),
 795                            le32_to_cpu(allmulti)));
 796         }
 797 }
 798
 799 static int
 800 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, u8 *addr)
 801 {
 802         char buf[32];
 803         wl_ioctl_t ioc;
 804         int ret;
 805
 806         DHD_TRACE(("%s enter\n", __func__));
 807         if (!bcm_mkiovar
 808             ("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) {
 809                 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
 810                            dhd_ifname(&dhd->pub, ifidx)));
 811                 return -1;
 812         }
 813         memset(&ioc, 0, sizeof(ioc));
 814         ioc.cmd = WLC_SET_VAR;
 815         ioc.buf = buf;
 816         ioc.len = 32;
 817         ioc.set = true;
 818
 819         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 820         if (ret < 0) {
 821                 DHD_ERROR(("%s: set cur_etheraddr failed\n",
 822                            dhd_ifname(&dhd->pub, ifidx)));
 823         } else {
 824                 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN);
 825         }
 826
 827         return ret;
 828 }
 829
 830 #ifdef SOFTAP
 831 extern struct net_device *ap_net_dev;
 832 #endif
 833
 834 static void dhd_op_if(dhd_if_t *ifp)
 835 {
 836         dhd_info_t *dhd;
 837         int ret = 0, err = 0;
 838
 839         ASSERT(ifp && ifp->info && ifp->idx);   /* Virtual interfaces only */
 840
 841         dhd = ifp->info;
 842
 843         DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
 844
 845         switch (ifp->state) {
 846         case WLC_E_IF_ADD:
 847                 /*
 848                  * Delete the existing interface before overwriting it
 849                  * in case we missed the WLC_E_IF_DEL event.
 850                  */
 851                 if (ifp->net != NULL) {
 852                         DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
 853                         "try free & unregister\n",
 854                         __func__, ifp->net->name));
 855                         netif_stop_queue(ifp->net);
 856                         unregister_netdev(ifp->net);
 857                         free_netdev(ifp->net);
 858                 }
 859                 /* Allocate etherdev, including space for private structure */
 860                 ifp->net = alloc_etherdev(sizeof(dhd));
 861                 if (!ifp->net) {
 862                         DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
 863                         ret = -ENOMEM;
 864                 }
 865                 if (ret == 0) {
 866                         strcpy(ifp->net->name, ifp->name);
 867                         memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
 868                         err = dhd_net_attach(&dhd->pub, ifp->idx);
 869                         if (err != 0) {
 870                                 DHD_ERROR(("%s: dhd_net_attach failed, "
 871                                         "err %d\n",
 872                                         __func__, err));
 873                                 ret = -EOPNOTSUPP;
 874                         } else {
 875 #ifdef SOFTAP
 876                                 /* semaphore that the soft AP CODE
 877                                          waits on */
 878                                 extern struct semaphore ap_eth_sema;
 879
 880                                 /* save ptr to wl0.1 netdev for use
 881                                          in wl_iw.c  */
 882                                 ap_net_dev = ifp->net;
 883                                 /* signal to the SOFTAP 'sleeper' thread,
 884                                          wl0.1 is ready */
 885                                 up(&ap_eth_sema);
 886 #endif
 887                                 DHD_TRACE(("\n ==== pid:%x, net_device for "
 888                                         "if:%s created ===\n\n",
 889                                         current->pid, ifp->net->name));
 890                                 ifp->state = 0;
 891                         }
 892                 }
 893                 break;
 894         case WLC_E_IF_DEL:
 895                 if (ifp->net != NULL) {
 896                         DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
 897                                    __func__));
 898                         netif_stop_queue(ifp->net);
 899                         unregister_netdev(ifp->net);
 900                         ret = DHD_DEL_IF;       /* Make sure the free_netdev()
 901                                                          is called */
 902                 }
 903                 break;
 904         default:
 905                 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
 906                 ASSERT(!ifp->state);
 907                 break;
 908         }
 909
 910         if (ret < 0) {
 911                 if (ifp->net)
 912                         free_netdev(ifp->net);
 913
 914                 dhd->iflist[ifp->idx] = NULL;
 915                 kfree(ifp);
 916 #ifdef SOFTAP
 917                 if (ifp->net == ap_net_dev)
 918                         ap_net_dev = NULL;      /*  NULL  SOFTAP global
 919                                                          wl0.1 as well */
 920 #endif                          /*  SOFTAP */
 921         }
 922 }
 923
 924 static int _dhd_sysioc_thread(void *data)
 925 {
 926         dhd_info_t *dhd = (dhd_info_t *) data;
 927         int i;
 928 #ifdef SOFTAP
 929         bool in_ap = false;
 930 #endif
 931
 932         allow_signal(SIGTERM);
 933
 934         while (down_interruptible(&dhd->sysioc_sem) == 0) {
 935                 if (kthread_should_stop())
 936                         break;
 937                 for (i = 0; i < DHD_MAX_IFS; i++) {
 938                         if (dhd->iflist[i]) {
 939 #ifdef SOFTAP
 940                                 in_ap = (ap_net_dev != NULL);
 941 #endif                          /* SOFTAP */
 942                                 if (dhd->iflist[i]->state)
 943                                         dhd_op_if(dhd->iflist[i]);
 944 #ifdef SOFTAP
 945                                 if (dhd->iflist[i] == NULL) {
 946                                         DHD_TRACE(("\n\n %s: interface %d "
 947                                                 "removed!\n", __func__, i));
 948                                         continue;
 949                                 }
 950
 951                                 if (in_ap && dhd->set_macaddress) {
 952                                         DHD_TRACE(("attempt to set MAC for %s "
 953                                                 "in AP Mode," "blocked. \n",
 954                                                 dhd->iflist[i]->net->name));
 955                                         dhd->set_macaddress = false;
 956                                         continue;
 957                                 }
 958
 959                                 if (in_ap && dhd->set_multicast) {
 960                                         DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
 961                                                 dhd->iflist[i]->net->name));
 962                                         dhd->set_multicast = false;
 963                                         continue;
 964                                 }
 965 #endif                          /* SOFTAP */
 966                                 if (dhd->set_multicast) {
 967                                         dhd->set_multicast = false;
 968                                         _dhd_set_multicast_list(dhd, i);
 969                                 }
 970                                 if (dhd->set_macaddress) {
 971                                         dhd->set_macaddress = false;
 972                                         _dhd_set_mac_address(dhd, i,
 973                                                              dhd->macvalue);
 974                                 }
 975                         }
 976                 }
 977         }
 978         return 0;
 979 }
 980
 981 static int dhd_set_mac_address(struct net_device *dev, void *addr)
 982 {
 983         int ret = 0;
 984
 985         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
 986         struct sockaddr *sa = (struct sockaddr *)addr;
 987         int ifidx;
 988
 989         ifidx = dhd_net2idx(dhd, dev);
 990         if (ifidx == DHD_BAD_IF)
 991                 return -1;
 992
 993         ASSERT(dhd->sysioc_tsk);
 994         memcpy(&dhd->macvalue, sa->sa_data, ETH_ALEN);
 995         dhd->set_macaddress = true;
 996         up(&dhd->sysioc_sem);
 997
 998         return ret;
 999 }
1000
1001 static void dhd_set_multicast_list(struct net_device *dev)
1002 {
1003         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1004         int ifidx;
1005
1006         ifidx = dhd_net2idx(dhd, dev);
1007         if (ifidx == DHD_BAD_IF)
1008                 return;
1009
1010         ASSERT(dhd->sysioc_tsk);
1011         dhd->set_multicast = true;
1012         up(&dhd->sysioc_sem);
1013 }
1014
1015 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf)
1016 {
1017         int ret;
1018         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1019
1020         /* Reject if down */
1021         if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1022                 return -ENODEV;
1023
1024         /* Update multicast statistic */
1025         if (pktbuf->len >= ETH_ALEN) {
1026                 u8 *pktdata = (u8 *) (pktbuf->data);
1027                 struct ethhdr *eh = (struct ethhdr *)pktdata;
1028
1029                 if (is_multicast_ether_addr(eh->h_dest))
1030                         dhdp->tx_multicast++;
1031                 if (ntohs(eh->h_proto) == ETH_P_PAE)
1032                         atomic_inc(&dhd->pend_8021x_cnt);
1033         }
1034
1035         /* If the protocol uses a data header, apply it */
1036         dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1037
1038         /* Use bus module to send data frame */
1039 #ifdef BCMDBUS
1040         ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1041 #else
1042         ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1043 #endif                          /* BCMDBUS */
1044
1045         return ret;
1046 }
1047
1048 static inline void *
1049 osl_pkt_frmnative(struct sk_buff *skb)
1050 {
1051         return (void *)skb;
1052 }
1053 #define PKTFRMNATIVE(osh, skb)  \
1054         osl_pkt_frmnative((struct sk_buff *)(skb))
1055
1056 static inline struct sk_buff *
1057 osl_pkt_tonative(void *pkt)
1058 {
1059         return (struct sk_buff *)pkt;
1060 }
1061 #define PKTTONATIVE(osh, pkt)   \
1062         osl_pkt_tonative((pkt))
1063
1064 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1065 {
1066         int ret;
1067         void *pktbuf;
1068         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1069         int ifidx;
1070
1071         DHD_TRACE(("%s: Enter\n", __func__));
1072
1073         /* Reject if down */
1074         if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1075                 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1076                            __func__, dhd->pub.up, dhd->pub.busstate));
1077                 netif_stop_queue(net);
1078                 return -ENODEV;
1079         }
1080
1081         ifidx = dhd_net2idx(dhd, net);
1082         if (ifidx == DHD_BAD_IF) {
1083                 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1084                 netif_stop_queue(net);
1085                 return -ENODEV;
1086         }
1087
1088         /* Make sure there's enough room for any header */
1089         if (skb_headroom(skb) < dhd->pub.hdrlen) {
1090                 struct sk_buff *skb2;
1091
1092                 DHD_INFO(("%s: insufficient headroom\n",
1093                           dhd_ifname(&dhd->pub, ifidx)));
1094                 dhd->pub.tx_realloc++;
1095                 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1096                 dev_kfree_skb(skb);
1097                 skb = skb2;
1098                 if (skb == NULL) {
1099                         DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1100                                    dhd_ifname(&dhd->pub, ifidx)));
1101                         ret = -ENOMEM;
1102                         goto done;
1103                 }
1104         }
1105
1106         /* Convert to packet */
1107         pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1108         if (!pktbuf) {
1109                 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1110                            dhd_ifname(&dhd->pub, ifidx)));
1111                 dev_kfree_skb_any(skb);
1112                 ret = -ENOMEM;
1113                 goto done;
1114         }
1115
1116         ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1117
1118 done:
1119         if (ret)
1120                 dhd->pub.dstats.tx_dropped++;
1121         else
1122                 dhd->pub.tx_packets++;
1123
1124         /* Return ok: we always eat the packet */
1125         return 0;
1126 }
1127
1128 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1129 {
1130         struct net_device *net;
1131         dhd_info_t *dhd = dhdp->info;
1132
1133         DHD_TRACE(("%s: Enter\n", __func__));
1134
1135         dhdp->txoff = state;
1136         ASSERT(dhd && dhd->iflist[ifidx]);
1137         net = dhd->iflist[ifidx]->net;
1138         if (state == ON)
1139                 netif_stop_queue(net);
1140         else
1141                 netif_wake_queue(net);
1142 }
1143
1144 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf,
1145                   int numpkt)
1146 {
1147         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1148         struct sk_buff *skb;
1149         unsigned char *eth;
1150         uint len;
1151         void *data;
1152         struct sk_buff *pnext, *save_pktbuf;
1153         int i;
1154         dhd_if_t *ifp;
1155         wl_event_msg_t event;
1156
1157         DHD_TRACE(("%s: Enter\n", __func__));
1158
1159         save_pktbuf = pktbuf;
1160
1161         for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1162
1163                 pnext = pktbuf->next;
1164                 pktbuf->next = NULL;
1165
1166                 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1167
1168                 /* Get the protocol, maintain skb around eth_type_trans()
1169                  * The main reason for this hack is for the limitation of
1170                  * Linux 2.4 where 'eth_type_trans' uses the
1171                  * 'net->hard_header_len'
1172                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1173                  * coping of the packet coming from the network stack to add
1174                  * BDC, Hardware header etc, during network interface
1175                  * registration
1176                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1177                  * required
1178                  * for BDC, Hardware header etc. and not just the ETH_HLEN
1179                  */
1180                 eth = skb->data;
1181                 len = skb->len;
1182
1183                 ifp = dhd->iflist[ifidx];
1184                 if (ifp == NULL)
1185                         ifp = dhd->iflist[0];
1186
1187                 ASSERT(ifp);
1188                 skb->dev = ifp->net;
1189                 skb->protocol = eth_type_trans(skb, skb->dev);
1190
1191                 if (skb->pkt_type == PACKET_MULTICAST)
1192                         dhd->pub.rx_multicast++;
1193
1194                 skb->data = eth;
1195                 skb->len = len;
1196
1197                 /* Strip header, count, deliver upward */
1198                 skb_pull(skb, ETH_HLEN);
1199
1200                 /* Process special event packets and then discard them */
1201                 if (ntohs(skb->protocol) == ETH_P_BRCM)
1202                         dhd_wl_host_event(dhd, &ifidx,
1203                                           skb_mac_header(skb),
1204                                           &event, &data);
1205
1206                 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1207                 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1208                         ifp = dhd->iflist[ifidx];
1209
1210                 if (ifp->net)
1211                         ifp->net->last_rx = jiffies;
1212
1213                 dhdp->dstats.rx_bytes += skb->len;
1214                 dhdp->rx_packets++;     /* Local count */
1215
1216                 if (in_interrupt()) {
1217                         netif_rx(skb);
1218                 } else {
1219                         /* If the receive is not processed inside an ISR,
1220                          * the softirqd must be woken explicitly to service
1221                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
1222                          * by netif_rx_ni(), but in earlier kernels, we need
1223                          * to do it manually.
1224                          */
1225                         netif_rx_ni(skb);
1226                 }
1227         }
1228 }
1229
1230 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1231 {
1232         /* Linux version has nothing to do */
1233         return;
1234 }
1235
1236 void dhd_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success)
1237 {
1238         uint ifidx;
1239         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1240         struct ethhdr *eh;
1241         u16 type;
1242
1243         dhd_prot_hdrpull(dhdp, &ifidx, txp);
1244
1245         eh = (struct ethhdr *)(txp->data);
1246         type = ntohs(eh->h_proto);
1247
1248         if (type == ETH_P_PAE)
1249                 atomic_dec(&dhd->pend_8021x_cnt);
1250
1251 }
1252
1253 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1254 {
1255         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1256         dhd_if_t *ifp;
1257         int ifidx;
1258
1259         DHD_TRACE(("%s: Enter\n", __func__));
1260
1261         ifidx = dhd_net2idx(dhd, net);
1262         if (ifidx == DHD_BAD_IF)
1263                 return NULL;
1264
1265         ifp = dhd->iflist[ifidx];
1266         ASSERT(dhd && ifp);
1267
1268         if (dhd->pub.up) {
1269                 /* Use the protocol to get dongle stats */
1270                 dhd_prot_dstats(&dhd->pub);
1271         }
1272
1273         /* Copy dongle stats to net device stats */
1274         ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1275         ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1276         ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1277         ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1278         ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1279         ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1280         ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1281         ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1282         ifp->stats.multicast = dhd->pub.dstats.multicast;
1283
1284         return &ifp->stats;
1285 }
1286
1287 static int dhd_watchdog_thread(void *data)
1288 {
1289         dhd_info_t *dhd = (dhd_info_t *) data;
1290
1291         /* This thread doesn't need any user-level access,
1292          * so get rid of all our resources
1293          */
1294 #ifdef DHD_SCHED
1295         if (dhd_watchdog_prio > 0) {
1296                 struct sched_param param;
1297                 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1298                     dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1299                 setScheduler(current, SCHED_FIFO, &param);
1300         }
1301 #endif                          /* DHD_SCHED */
1302
1303         allow_signal(SIGTERM);
1304         /* Run until signal received */
1305         while (1) {
1306                 if (kthread_should_stop())
1307                         break;
1308                 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1309                         if (dhd->pub.dongle_reset == false) {
1310                                 /* Call the bus module watchdog */
1311                                 dhd_bus_watchdog(&dhd->pub);
1312                         }
1313                         /* Count the tick for reference */
1314                         dhd->pub.tickcnt++;
1315                 } else
1316                         break;
1317         }
1318         return 0;
1319 }
1320
1321 static void dhd_watchdog(unsigned long data)
1322 {
1323         dhd_info_t *dhd = (dhd_info_t *) data;
1324
1325         if (dhd->watchdog_tsk) {
1326                 up(&dhd->watchdog_sem);
1327
1328                 /* Reschedule the watchdog */
1329                 if (dhd->wd_timer_valid) {
1330                         mod_timer(&dhd->timer,
1331                                   jiffies + dhd_watchdog_ms * HZ / 1000);
1332                 }
1333                 return;
1334         }
1335
1336         /* Call the bus module watchdog */
1337         dhd_bus_watchdog(&dhd->pub);
1338
1339         /* Count the tick for reference */
1340         dhd->pub.tickcnt++;
1341
1342         /* Reschedule the watchdog */
1343         if (dhd->wd_timer_valid)
1344                 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1345 }
1346
1347 static int dhd_dpc_thread(void *data)
1348 {
1349         dhd_info_t *dhd = (dhd_info_t *) data;
1350
1351         /* This thread doesn't need any user-level access,
1352          * so get rid of all our resources
1353          */
1354 #ifdef DHD_SCHED
1355         if (dhd_dpc_prio > 0) {
1356                 struct sched_param param;
1357                 param.sched_priority =
1358                     (dhd_dpc_prio <
1359                      MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1360                 setScheduler(current, SCHED_FIFO, &param);
1361         }
1362 #endif                          /* DHD_SCHED */
1363
1364         allow_signal(SIGTERM);
1365         /* Run until signal received */
1366         while (1) {
1367                 if (kthread_should_stop())
1368                         break;
1369                 if (down_interruptible(&dhd->dpc_sem) == 0) {
1370                         /* Call bus dpc unless it indicated down
1371                                  (then clean stop) */
1372                         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1373                                 if (dhd_bus_dpc(dhd->pub.bus)) {
1374                                         up(&dhd->dpc_sem);
1375                                 }
1376                         } else {
1377                                 dhd_bus_stop(dhd->pub.bus, true);
1378                         }
1379                 } else
1380                         break;
1381         }
1382         return 0;
1383 }
1384
1385 static void dhd_dpc(unsigned long data)
1386 {
1387         dhd_info_t *dhd;
1388
1389         dhd = (dhd_info_t *) data;
1390
1391         /* Call bus dpc unless it indicated down (then clean stop) */
1392         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1393                 if (dhd_bus_dpc(dhd->pub.bus))
1394                         tasklet_schedule(&dhd->tasklet);
1395         } else {
1396                 dhd_bus_stop(dhd->pub.bus, true);
1397         }
1398 }
1399
1400 void dhd_sched_dpc(dhd_pub_t *dhdp)
1401 {
1402         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1403
1404         if (dhd->dpc_tsk) {
1405                 up(&dhd->dpc_sem);
1406                 return;
1407         }
1408
1409         tasklet_schedule(&dhd->tasklet);
1410 }
1411
1412 #ifdef TOE
1413 /* Retrieve current toe component enables, which are kept
1414          as a bitmap in toe_ol iovar */
1415 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1416 {
1417         wl_ioctl_t ioc;
1418         char buf[32];
1419         int ret;
1420
1421         memset(&ioc, 0, sizeof(ioc));
1422
1423         ioc.cmd = WLC_GET_VAR;
1424         ioc.buf = buf;
1425         ioc.len = (uint) sizeof(buf);
1426         ioc.set = false;
1427
1428         strcpy(buf, "toe_ol");
1429         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1430         if (ret < 0) {
1431                 /* Check for older dongle image that doesn't support toe_ol */
1432                 if (ret == -EIO) {
1433                         DHD_ERROR(("%s: toe not supported by device\n",
1434                                    dhd_ifname(&dhd->pub, ifidx)));
1435                         return -EOPNOTSUPP;
1436                 }
1437
1438                 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1439                           dhd_ifname(&dhd->pub, ifidx), ret));
1440                 return ret;
1441         }
1442
1443         memcpy(toe_ol, buf, sizeof(u32));
1444         return 0;
1445 }
1446
1447 /* Set current toe component enables in toe_ol iovar,
1448          and set toe global enable iovar */
1449 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1450 {
1451         wl_ioctl_t ioc;
1452         char buf[32];
1453         int toe, ret;
1454
1455         memset(&ioc, 0, sizeof(ioc));
1456
1457         ioc.cmd = WLC_SET_VAR;
1458         ioc.buf = buf;
1459         ioc.len = (uint) sizeof(buf);
1460         ioc.set = true;
1461
1462         /* Set toe_ol as requested */
1463
1464         strcpy(buf, "toe_ol");
1465         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1466
1467         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1468         if (ret < 0) {
1469                 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1470                            dhd_ifname(&dhd->pub, ifidx), ret));
1471                 return ret;
1472         }
1473
1474         /* Enable toe globally only if any components are enabled. */
1475
1476         toe = (toe_ol != 0);
1477
1478         strcpy(buf, "toe");
1479         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1480
1481         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1482         if (ret < 0) {
1483                 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1484                            dhd_ifname(&dhd->pub, ifidx), ret));
1485                 return ret;
1486         }
1487
1488         return 0;
1489 }
1490 #endif                          /* TOE */
1491
1492 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1493                                     struct ethtool_drvinfo *info)
1494 {
1495         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1496
1497         sprintf(info->driver, DRV_MODULE_NAME);
1498         sprintf(info->version, "%lu", dhd->pub.drv_version);
1499         sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1500         sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1501 }
1502
1503 struct ethtool_ops dhd_ethtool_ops = {
1504         .get_drvinfo = dhd_ethtool_get_drvinfo
1505 };
1506
1507 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1508 {
1509         struct ethtool_drvinfo info;
1510         char drvname[sizeof(info.driver)];
1511         u32 cmd;
1512 #ifdef TOE
1513         struct ethtool_value edata;
1514         u32 toe_cmpnt, csum_dir;
1515         int ret;
1516 #endif
1517
1518         DHD_TRACE(("%s: Enter\n", __func__));
1519
1520         /* all ethtool calls start with a cmd word */
1521         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1522                 return -EFAULT;
1523
1524         switch (cmd) {
1525         case ETHTOOL_GDRVINFO:
1526                 /* Copy out any request driver name */
1527                 if (copy_from_user(&info, uaddr, sizeof(info)))
1528                         return -EFAULT;
1529                 strncpy(drvname, info.driver, sizeof(info.driver));
1530                 drvname[sizeof(info.driver) - 1] = '\0';
1531
1532                 /* clear struct for return */
1533                 memset(&info, 0, sizeof(info));
1534                 info.cmd = cmd;
1535
1536                 /* if dhd requested, identify ourselves */
1537                 if (strcmp(drvname, "?dhd") == 0) {
1538                         sprintf(info.driver, "dhd");
1539                         strcpy(info.version, EPI_VERSION_STR);
1540                 }
1541
1542                 /* otherwise, require dongle to be up */
1543                 else if (!dhd->pub.up) {
1544                         DHD_ERROR(("%s: dongle is not up\n", __func__));
1545                         return -ENODEV;
1546                 }
1547
1548                 /* finally, report dongle driver type */
1549                 else if (dhd->pub.iswl)
1550                         sprintf(info.driver, "wl");
1551                 else
1552                         sprintf(info.driver, "xx");
1553
1554                 sprintf(info.version, "%lu", dhd->pub.drv_version);
1555                 if (copy_to_user(uaddr, &info, sizeof(info)))
1556                         return -EFAULT;
1557                 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1558                          (int)sizeof(drvname), drvname, info.driver));
1559                 break;
1560
1561 #ifdef TOE
1562                 /* Get toe offload components from dongle */
1563         case ETHTOOL_GRXCSUM:
1564         case ETHTOOL_GTXCSUM:
1565                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1566                 if (ret < 0)
1567                         return ret;
1568
1569                 csum_dir =
1570                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1571
1572                 edata.cmd = cmd;
1573                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1574
1575                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1576                         return -EFAULT;
1577                 break;
1578
1579                 /* Set toe offload components in dongle */
1580         case ETHTOOL_SRXCSUM:
1581         case ETHTOOL_STXCSUM:
1582                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1583                         return -EFAULT;
1584
1585                 /* Read the current settings, update and write back */
1586                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1587                 if (ret < 0)
1588                         return ret;
1589
1590                 csum_dir =
1591                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1592
1593                 if (edata.data != 0)
1594                         toe_cmpnt |= csum_dir;
1595                 else
1596                         toe_cmpnt &= ~csum_dir;
1597
1598                 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1599                 if (ret < 0)
1600                         return ret;
1601
1602                 /* If setting TX checksum mode, tell Linux the new mode */
1603                 if (cmd == ETHTOOL_STXCSUM) {
1604                         if (edata.data)
1605                                 dhd->iflist[0]->net->features |=
1606                                     NETIF_F_IP_CSUM;
1607                         else
1608                                 dhd->iflist[0]->net->features &=
1609                                     ~NETIF_F_IP_CSUM;
1610                 }
1611
1612                 break;
1613 #endif                          /* TOE */
1614
1615         default:
1616                 return -EOPNOTSUPP;
1617         }
1618
1619         return 0;
1620 }
1621
1622 static s16 linuxbcmerrormap[] = { 0,    /* 0 */
1623         -EINVAL,                /* BCME_ERROR */
1624         -EINVAL,                /* BCME_BADARG */
1625         -EINVAL,                /* BCME_BADOPTION */
1626         -EINVAL,                /* BCME_NOTUP */
1627         -EINVAL,                /* BCME_NOTDOWN */
1628         -EINVAL,                /* BCME_NOTAP */
1629         -EINVAL,                /* BCME_NOTSTA */
1630         -EINVAL,                /* BCME_BADKEYIDX */
1631         -EINVAL,                /* BCME_RADIOOFF */
1632         -EINVAL,                /* BCME_NOTBANDLOCKED */
1633         -EINVAL,                /* BCME_NOCLK */
1634         -EINVAL,                /* BCME_BADRATESET */
1635         -EINVAL,                /* BCME_BADBAND */
1636         -E2BIG,                 /* BCME_BUFTOOSHORT */
1637         -E2BIG,                 /* BCME_BUFTOOLONG */
1638         -EBUSY,                 /* BCME_BUSY */
1639         -EINVAL,                /* BCME_NOTASSOCIATED */
1640         -EINVAL,                /* BCME_BADSSIDLEN */
1641         -EINVAL,                /* BCME_OUTOFRANGECHAN */
1642         -EINVAL,                /* BCME_BADCHAN */
1643         -EFAULT,                /* BCME_BADADDR */
1644         -ENOMEM,                /* BCME_NORESOURCE */
1645         -EOPNOTSUPP,            /* BCME_UNSUPPORTED */
1646         -EMSGSIZE,              /* BCME_BADLENGTH */
1647         -EINVAL,                /* BCME_NOTREADY */
1648         -EPERM,                 /* BCME_NOTPERMITTED */
1649         -ENOMEM,                /* BCME_NOMEM */
1650         -EINVAL,                /* BCME_ASSOCIATED */
1651         -ERANGE,                /* BCME_RANGE */
1652         -EINVAL,                /* BCME_NOTFOUND */
1653         -EINVAL,                /* BCME_WME_NOT_ENABLED */
1654         -EINVAL,                /* BCME_TSPEC_NOTFOUND */
1655         -EINVAL,                /* BCME_ACM_NOTSUPPORTED */
1656         -EINVAL,                /* BCME_NOT_WME_ASSOCIATION */
1657         -EIO,                   /* BCME_SDIO_ERROR */
1658         -ENODEV,                /* BCME_DONGLE_DOWN */
1659         -EINVAL,                /* BCME_VERSION */
1660         -EIO,                   /* BCME_TXFAIL */
1661         -EIO,                   /* BCME_RXFAIL */
1662         -EINVAL,                /* BCME_NODEVICE */
1663         -EINVAL,                /* BCME_NMODE_DISABLED */
1664         -ENODATA,               /* BCME_NONRESIDENT */
1665 };
1666
1667 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1668 {
1669         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1670         dhd_ioctl_t ioc;
1671         int bcmerror = 0;
1672         int buflen = 0;
1673         void *buf = NULL;
1674         uint driver = 0;
1675         int ifidx;
1676         bool is_set_key_cmd;
1677
1678         ifidx = dhd_net2idx(dhd, net);
1679         DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1680
1681         if (ifidx == DHD_BAD_IF)
1682                 return -1;
1683
1684 #if defined(CONFIG_WIRELESS_EXT)
1685         /* linux wireless extensions */
1686         if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1687                 /* may recurse, do NOT lock */
1688                 return wl_iw_ioctl(net, ifr, cmd);
1689         }
1690 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
1691
1692         if (cmd == SIOCETHTOOL)
1693                 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1694
1695         if (cmd != SIOCDEVPRIVATE)
1696                 return -EOPNOTSUPP;
1697
1698         memset(&ioc, 0, sizeof(ioc));
1699
1700         /* Copy the ioc control structure part of ioctl request */
1701         if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1702                 bcmerror = -BCME_BADADDR;
1703                 goto done;
1704         }
1705
1706         /* Copy out any buffer passed */
1707         if (ioc.buf) {
1708                 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1709                 /* optimization for direct ioctl calls from kernel */
1710                 /*
1711                    if (segment_eq(get_fs(), KERNEL_DS)) {
1712                    buf = ioc.buf;
1713                    } else {
1714                  */
1715                 {
1716                         buf = kmalloc(buflen, GFP_ATOMIC);
1717                         if (!buf) {
1718                                 bcmerror = -BCME_NOMEM;
1719                                 goto done;
1720                         }
1721                         if (copy_from_user(buf, ioc.buf, buflen)) {
1722                                 bcmerror = -BCME_BADADDR;
1723                                 goto done;
1724                         }
1725                 }
1726         }
1727
1728         /* To differentiate between wl and dhd read 4 more byes */
1729         if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1730                             sizeof(uint)) != 0)) {
1731                 bcmerror = -BCME_BADADDR;
1732                 goto done;
1733         }
1734
1735         if (!capable(CAP_NET_ADMIN)) {
1736                 bcmerror = -BCME_EPERM;
1737                 goto done;
1738         }
1739
1740         /* check for local dhd ioctl and handle it */
1741         if (driver == DHD_IOCTL_MAGIC) {
1742                 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1743                 if (bcmerror)
1744                         dhd->pub.bcmerror = bcmerror;
1745                 goto done;
1746         }
1747
1748         /* send to dongle (must be up, and wl) */
1749         if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1750                 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1751                 bcmerror = BCME_DONGLE_DOWN;
1752                 goto done;
1753         }
1754
1755         if (!dhd->pub.iswl) {
1756                 bcmerror = BCME_DONGLE_DOWN;
1757                 goto done;
1758         }
1759
1760         /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1761          * prevent M4 encryption.
1762          */
1763         is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1764                           ((ioc.cmd == WLC_SET_VAR) &&
1765                            !(strncmp("wsec_key", ioc.buf, 9))) ||
1766                           ((ioc.cmd == WLC_SET_VAR) &&
1767                            !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1768         if (is_set_key_cmd)
1769                 dhd_wait_pend8021x(net);
1770
1771         bcmerror =
1772             dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1773
1774 done:
1775         if (!bcmerror && buf && ioc.buf) {
1776                 if (copy_to_user(ioc.buf, buf, buflen))
1777                         bcmerror = -EFAULT;
1778         }
1779
1780         kfree(buf);
1781
1782         if (bcmerror > 0)
1783                 bcmerror = 0;
1784         else if (bcmerror < BCME_LAST)
1785                 bcmerror = BCME_ERROR;
1786
1787         return linuxbcmerrormap[-bcmerror];
1788 }
1789
1790 static int dhd_stop(struct net_device *net)
1791 {
1792 #if !defined(IGNORE_ETH0_DOWN)
1793         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1794
1795         DHD_TRACE(("%s: Enter\n", __func__));
1796         if (IS_CFG80211_FAVORITE()) {
1797                 wl_cfg80211_down();
1798         }
1799         if (dhd->pub.up == 0)
1800                 return 0;
1801
1802         /* Set state and stop OS transmissions */
1803         dhd->pub.up = 0;
1804         netif_stop_queue(net);
1805 #else
1806         DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1807                 __func__));
1808 #endif                          /* !defined(IGNORE_ETH0_DOWN) */
1809
1810         return 0;
1811 }
1812
1813 static int dhd_open(struct net_device *net)
1814 {
1815         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1816 #ifdef TOE
1817         u32 toe_ol;
1818 #endif
1819         int ifidx = dhd_net2idx(dhd, net);
1820         s32 ret = 0;
1821
1822         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1823
1824         if (ifidx == 0) {       /* do it only for primary eth0 */
1825
1826                 /* try to bring up bus */
1827                 ret = dhd_bus_start(&dhd->pub);
1828                 if (ret != 0) {
1829                         DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1830                         return -1;
1831                 }
1832                 atomic_set(&dhd->pend_8021x_cnt, 0);
1833
1834                 memcpy(net->dev_addr, dhd->pub.mac, ETH_ALEN);
1835
1836 #ifdef TOE
1837                 /* Get current TOE mode from dongle */
1838                 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1839                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
1840                         dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1841                 else
1842                         dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1843 #endif
1844         }
1845         /* Allow transmit calls */
1846         netif_start_queue(net);
1847         dhd->pub.up = 1;
1848         if (IS_CFG80211_FAVORITE()) {
1849                 if (unlikely(wl_cfg80211_up())) {
1850                         DHD_ERROR(("%s: failed to bring up cfg80211\n",
1851                                    __func__));
1852                         return -1;
1853                 }
1854         }
1855
1856         return ret;
1857 }
1858
1859 int
1860 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1861            u8 *mac_addr, u32 flags, u8 bssidx)
1862 {
1863         dhd_if_t *ifp;
1864
1865         DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1866
1867         ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1868
1869         ifp = dhd->iflist[ifidx];
1870         if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1871                 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1872                 return -ENOMEM;
1873         }
1874
1875         memset(ifp, 0, sizeof(dhd_if_t));
1876         ifp->info = dhd;
1877         dhd->iflist[ifidx] = ifp;
1878         strlcpy(ifp->name, name, IFNAMSIZ);
1879         if (mac_addr != NULL)
1880                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
1881
1882         if (handle == NULL) {
1883                 ifp->state = WLC_E_IF_ADD;
1884                 ifp->idx = ifidx;
1885                 ASSERT(dhd->sysioc_tsk);
1886                 up(&dhd->sysioc_sem);
1887         } else
1888                 ifp->net = (struct net_device *)handle;
1889
1890         return 0;
1891 }
1892
1893 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1894 {
1895         dhd_if_t *ifp;
1896
1897         DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1898
1899         ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1900         ifp = dhd->iflist[ifidx];
1901         if (!ifp) {
1902                 DHD_ERROR(("%s: Null interface\n", __func__));
1903                 return;
1904         }
1905
1906         ifp->state = WLC_E_IF_DEL;
1907         ifp->idx = ifidx;
1908         ASSERT(dhd->sysioc_tsk);
1909         up(&dhd->sysioc_sem);
1910 }
1911
1912 dhd_pub_t *dhd_attach(struct dhd_bus *bus, uint bus_hdrlen)
1913 {
1914         dhd_info_t *dhd = NULL;
1915         struct net_device *net;
1916
1917         DHD_TRACE(("%s: Enter\n", __func__));
1918         /* updates firmware nvram path if it was provided as module
1919                  paramters */
1920         if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1921                 strcpy(fw_path, firmware_path);
1922         if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1923                 strcpy(nv_path, nvram_path);
1924
1925         /* Allocate etherdev, including space for private structure */
1926         net = alloc_etherdev(sizeof(dhd));
1927         if (!net) {
1928                 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1929                 goto fail;
1930         }
1931
1932         /* Allocate primary dhd_info */
1933         dhd = kzalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1934         if (!dhd) {
1935                 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1936                 goto fail;
1937         }
1938
1939         /*
1940          * Save the dhd_info into the priv
1941          */
1942         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1943
1944         /* Set network interface name if it was provided as module parameter */
1945         if (iface_name[0]) {
1946                 int len;
1947                 char ch;
1948                 strncpy(net->name, iface_name, IFNAMSIZ);
1949                 net->name[IFNAMSIZ - 1] = 0;
1950                 len = strlen(net->name);
1951                 ch = net->name[len - 1];
1952                 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1953                         strcat(net->name, "%d");
1954         }
1955
1956         if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1957             DHD_BAD_IF)
1958                 goto fail;
1959
1960         net->netdev_ops = NULL;
1961         sema_init(&dhd->proto_sem, 1);
1962         /* Initialize other structure content */
1963         init_waitqueue_head(&dhd->ioctl_resp_wait);
1964         init_waitqueue_head(&dhd->ctrl_wait);
1965
1966         /* Initialize the spinlocks */
1967         spin_lock_init(&dhd->sdlock);
1968         spin_lock_init(&dhd->txqlock);
1969
1970         /* Link to info module */
1971         dhd->pub.info = dhd;
1972
1973         /* Link to bus module */
1974         dhd->pub.bus = bus;
1975         dhd->pub.hdrlen = bus_hdrlen;
1976
1977         /* Attach and link in the protocol */
1978         if (dhd_prot_attach(&dhd->pub) != 0) {
1979                 DHD_ERROR(("dhd_prot_attach failed\n"));
1980                 goto fail;
1981         }
1982 #if defined(CONFIG_WIRELESS_EXT)
1983         /* Attach and link in the iw */
1984         if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
1985                 DHD_ERROR(("wl_iw_attach failed\n"));
1986                 goto fail;
1987         }
1988 #endif  /* defined(CONFIG_WIRELESS_EXT) */
1989
1990         /* Attach and link in the cfg80211 */
1991         if (IS_CFG80211_FAVORITE()) {
1992                 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
1993                         DHD_ERROR(("wl_cfg80211_attach failed\n"));
1994                         goto fail;
1995                 }
1996                 if (!NO_FW_REQ()) {
1997                         strcpy(fw_path, wl_cfg80211_get_fwname());
1998                         strcpy(nv_path, wl_cfg80211_get_nvramname());
1999                 }
2000                 wl_cfg80211_dbg_level(DBG_CFG80211_GET());
2001         }
2002
2003         /* Set up the watchdog timer */
2004         init_timer(&dhd->timer);
2005         dhd->timer.data = (unsigned long) dhd;
2006         dhd->timer.function = dhd_watchdog;
2007
2008         /* Initialize thread based operation and lock */
2009         sema_init(&dhd->sdsem, 1);
2010         if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
2011                 dhd->threads_only = true;
2012         else
2013                 dhd->threads_only = false;
2014
2015         if (dhd_dpc_prio >= 0) {
2016                 /* Initialize watchdog thread */
2017                 sema_init(&dhd->watchdog_sem, 0);
2018                 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
2019                                                 "dhd_watchdog");
2020                 if (IS_ERR(dhd->watchdog_tsk)) {
2021                         printk(KERN_WARNING
2022                                 "dhd_watchdog thread failed to start\n");
2023                         dhd->watchdog_tsk = NULL;
2024                 }
2025         } else {
2026                 dhd->watchdog_tsk = NULL;
2027         }
2028
2029         /* Set up the bottom half handler */
2030         if (dhd_dpc_prio >= 0) {
2031                 /* Initialize DPC thread */
2032                 sema_init(&dhd->dpc_sem, 0);
2033                 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
2034                 if (IS_ERR(dhd->dpc_tsk)) {
2035                         printk(KERN_WARNING
2036                                 "dhd_dpc thread failed to start\n");
2037                         dhd->dpc_tsk = NULL;
2038                 }
2039         } else {
2040                 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
2041                 dhd->dpc_tsk = NULL;
2042         }
2043
2044         if (dhd_sysioc) {
2045                 sema_init(&dhd->sysioc_sem, 0);
2046                 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
2047                                                 "_dhd_sysioc");
2048                 if (IS_ERR(dhd->sysioc_tsk)) {
2049                         printk(KERN_WARNING
2050                                 "_dhd_sysioc thread failed to start\n");
2051                         dhd->sysioc_tsk = NULL;
2052                 }
2053         } else
2054                 dhd->sysioc_tsk = NULL;
2055
2056         /*
2057          * Save the dhd_info into the priv
2058          */
2059         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2060
2061 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2062         g_bus = bus;
2063 #endif
2064 #if defined(CONFIG_PM_SLEEP)
2065         register_pm_notifier(&dhd_sleep_pm_notifier);
2066 #endif  /* defined(CONFIG_PM_SLEEP) */
2067         /* && defined(DHD_GPL) */
2068         /* Init lock suspend to prevent kernel going to suspend */
2069 #ifdef CONFIG_HAS_EARLYSUSPEND
2070         dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
2071         dhd->early_suspend.suspend = dhd_early_suspend;
2072         dhd->early_suspend.resume = dhd_late_resume;
2073         register_early_suspend(&dhd->early_suspend);
2074 #endif
2075
2076         return &dhd->pub;
2077
2078 fail:
2079         if (net)
2080                 free_netdev(net);
2081         if (dhd)
2082                 dhd_detach(&dhd->pub);
2083
2084         return NULL;
2085 }
2086
2087 int dhd_bus_start(dhd_pub_t *dhdp)
2088 {
2089         int ret = -1;
2090         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2091 #ifdef EMBEDDED_PLATFORM
2092         char iovbuf[WL_EVENTING_MASK_LEN + 12]; /*  Room for "event_msgs" +
2093                                                  '\0' + bitvec  */
2094 #endif                          /* EMBEDDED_PLATFORM */
2095
2096         ASSERT(dhd);
2097
2098         DHD_TRACE(("%s:\n", __func__));
2099
2100         /* try to download image and nvram to the dongle */
2101         if (dhd->pub.busstate == DHD_BUS_DOWN) {
2102                 if (!(dhd_bus_download_firmware(dhd->pub.bus,
2103                                                 fw_path, nv_path))) {
2104                         DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2105                                 "firmware = %s nvram = %s\n",
2106                                 __func__, fw_path, nv_path));
2107                         return -1;
2108                 }
2109         }
2110
2111         /* Start the watchdog timer */
2112         dhd->pub.tickcnt = 0;
2113         dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2114
2115         /* Bring up the bus */
2116         ret = dhd_bus_init(&dhd->pub, true);
2117         if (ret != 0) {
2118                 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2119                 return ret;
2120         }
2121 #if defined(OOB_INTR_ONLY)
2122         /* Host registration for OOB interrupt */
2123         if (bcmsdh_register_oob_intr(dhdp)) {
2124                 del_timer_sync(&dhd->timer);
2125                 dhd->wd_timer_valid = false;
2126                 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2127                 return -ENODEV;
2128         }
2129
2130         /* Enable oob at firmware */
2131         dhd_enable_oob_intr(dhd->pub.bus, true);
2132 #endif                          /* defined(OOB_INTR_ONLY) */
2133
2134         /* If bus is not ready, can't come up */
2135         if (dhd->pub.busstate != DHD_BUS_DATA) {
2136                 del_timer_sync(&dhd->timer);
2137                 dhd->wd_timer_valid = false;
2138                 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2139                 return -ENODEV;
2140         }
2141 #ifdef EMBEDDED_PLATFORM
2142         bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
2143                     sizeof(iovbuf));
2144         dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2145         memcpy(dhdp->eventmask, iovbuf, WL_EVENTING_MASK_LEN);
2146
2147         setbit(dhdp->eventmask, WLC_E_SET_SSID);
2148         setbit(dhdp->eventmask, WLC_E_PRUNE);
2149         setbit(dhdp->eventmask, WLC_E_AUTH);
2150         setbit(dhdp->eventmask, WLC_E_REASSOC);
2151         setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2152         setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2153         setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2154         setbit(dhdp->eventmask, WLC_E_DISASSOC);
2155         setbit(dhdp->eventmask, WLC_E_JOIN);
2156         setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2157         setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2158         setbit(dhdp->eventmask, WLC_E_LINK);
2159         setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2160         setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2161         setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2162         setbit(dhdp->eventmask, WLC_E_TXFAIL);
2163         setbit(dhdp->eventmask, WLC_E_JOIN_START);
2164         setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2165 #ifdef PNO_SUPPORT
2166         setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2167 #endif                          /* PNO_SUPPORT */
2168
2169 /* enable dongle roaming event */
2170
2171         dhdp->pktfilter_count = 1;
2172         /* Setup filter to allow only unicast */
2173         dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2174 #endif                          /* EMBEDDED_PLATFORM */
2175
2176         /* Bus is ready, do any protocol initialization */
2177         ret = dhd_prot_init(&dhd->pub);
2178         if (ret < 0)
2179                 return ret;
2180
2181         return 0;
2182 }
2183
2184 int
2185 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2186           int set)
2187 {
2188         char buf[strlen(name) + 1 + cmd_len];
2189         int len = sizeof(buf);
2190         wl_ioctl_t ioc;
2191         int ret;
2192
2193         len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);
2194
2195         memset(&ioc, 0, sizeof(ioc));
2196
2197         ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2198         ioc.buf = buf;
2199         ioc.len = len;
2200         ioc.set = set;
2201
2202         ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2203         if (!set && ret >= 0)
2204                 memcpy(cmd_buf, buf, cmd_len);
2205
2206         return ret;
2207 }
2208
2209 static struct net_device_ops dhd_ops_pri = {
2210         .ndo_open = dhd_open,
2211         .ndo_stop = dhd_stop,
2212         .ndo_get_stats = dhd_get_stats,
2213         .ndo_do_ioctl = dhd_ioctl_entry,
2214         .ndo_start_xmit = dhd_start_xmit,
2215         .ndo_set_mac_address = dhd_set_mac_address,
2216         .ndo_set_multicast_list = dhd_set_multicast_list
2217 };
2218
2219 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2220 {
2221         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2222         struct net_device *net;
2223         u8 temp_addr[ETH_ALEN] = {
2224                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2225
2226         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2227
2228         ASSERT(dhd && dhd->iflist[ifidx]);
2229
2230         net = dhd->iflist[ifidx]->net;
2231         ASSERT(net);
2232
2233         ASSERT(!net->netdev_ops);
2234         net->netdev_ops = &dhd_ops_pri;
2235
2236         /*
2237          * We have to use the primary MAC for virtual interfaces
2238          */
2239         if (ifidx != 0) {
2240                 /* for virtual interfaces use the primary MAC  */
2241                 memcpy(temp_addr, dhd->pub.mac, ETH_ALEN);
2242
2243         }
2244
2245         if (ifidx == 1) {
2246                 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2247                 /*  ACCESSPOINT INTERFACE CASE */
2248                 temp_addr[0] |= 0X02;   /* set bit 2 ,
2249                          - Locally Administered address  */
2250
2251         }
2252         net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2253         net->ethtool_ops = &dhd_ethtool_ops;
2254
2255 #if defined(CONFIG_WIRELESS_EXT)
2256         if (!IS_CFG80211_FAVORITE()) {
2257 #if WIRELESS_EXT < 19
2258                 net->get_wireless_stats = dhd_get_wireless_stats;
2259 #endif                          /* WIRELESS_EXT < 19 */
2260 #if WIRELESS_EXT > 12
2261                 net->wireless_handlers =
2262                     (struct iw_handler_def *)&wl_iw_handler_def;
2263 #endif                          /* WIRELESS_EXT > 12 */
2264         }
2265 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
2266
2267         dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2268
2269         memcpy(net->dev_addr, temp_addr, ETH_ALEN);
2270
2271         if (register_netdev(net) != 0) {
2272                 DHD_ERROR(("%s: couldn't register the net device\n",
2273                         __func__));
2274                 goto fail;
2275         }
2276
2277         DHD_INFO(("%s: Broadcom Dongle Host Driver\n", net->name));
2278
2279         return 0;
2280
2281 fail:
2282         net->netdev_ops = NULL;
2283         return BCME_ERROR;
2284 }
2285
2286 void dhd_bus_detach(dhd_pub_t *dhdp)
2287 {
2288         dhd_info_t *dhd;
2289
2290         DHD_TRACE(("%s: Enter\n", __func__));
2291
2292         if (dhdp) {
2293                 dhd = (dhd_info_t *) dhdp->info;
2294                 if (dhd) {
2295                         /* Stop the protocol module */
2296                         dhd_prot_stop(&dhd->pub);
2297
2298                         /* Stop the bus module */
2299                         dhd_bus_stop(dhd->pub.bus, true);
2300 #if defined(OOB_INTR_ONLY)
2301                         bcmsdh_unregister_oob_intr();
2302 #endif                          /* defined(OOB_INTR_ONLY) */
2303
2304                         /* Clear the watchdog timer */
2305                         del_timer_sync(&dhd->timer);
2306                         dhd->wd_timer_valid = false;
2307                 }
2308         }
2309 }
2310
2311 void dhd_detach(dhd_pub_t *dhdp)
2312 {
2313         dhd_info_t *dhd;
2314
2315         DHD_TRACE(("%s: Enter\n", __func__));
2316
2317         if (dhdp) {
2318                 dhd = (dhd_info_t *) dhdp->info;
2319                 if (dhd) {
2320                         dhd_if_t *ifp;
2321                         int i;
2322
2323 #if defined(CONFIG_HAS_EARLYSUSPEND)
2324                         if (dhd->early_suspend.suspend)
2325                                 unregister_early_suspend(&dhd->early_suspend);
2326 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2327
2328                         for (i = 1; i < DHD_MAX_IFS; i++)
2329                                 if (dhd->iflist[i])
2330                                         dhd_del_if(dhd, i);
2331
2332                         ifp = dhd->iflist[0];
2333                         ASSERT(ifp);
2334                         if (ifp->net->netdev_ops == &dhd_ops_pri) {
2335                                 dhd_stop(ifp->net);
2336                                 unregister_netdev(ifp->net);
2337                         }
2338
2339                         if (dhd->watchdog_tsk) {
2340                                 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2341                                 kthread_stop(dhd->watchdog_tsk);
2342                                 dhd->watchdog_tsk = NULL;
2343                         }
2344
2345                         if (dhd->dpc_tsk) {
2346                                 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2347                                 kthread_stop(dhd->dpc_tsk);
2348                                 dhd->dpc_tsk = NULL;
2349                         } else
2350                                 tasklet_kill(&dhd->tasklet);
2351
2352                         if (dhd->sysioc_tsk) {
2353                                 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2354                                 kthread_stop(dhd->sysioc_tsk);
2355                                 dhd->sysioc_tsk = NULL;
2356                         }
2357
2358                         dhd_bus_detach(dhdp);
2359
2360                         if (dhdp->prot)
2361                                 dhd_prot_detach(dhdp);
2362
2363 #if defined(CONFIG_WIRELESS_EXT)
2364                         wl_iw_detach();
2365 #endif                          /* (CONFIG_WIRELESS_EXT) */
2366
2367                         if (IS_CFG80211_FAVORITE())
2368                                 wl_cfg80211_detach();
2369
2370 #if defined(CONFIG_PM_SLEEP)
2371                         unregister_pm_notifier(&dhd_sleep_pm_notifier);
2372 #endif  /* defined(CONFIG_PM_SLEEP) */
2373                         /* && defined(DHD_GPL) */
2374                         free_netdev(ifp->net);
2375                         kfree(ifp);
2376                         kfree(dhd);
2377                 }
2378         }
2379 }
2380
2381 static void __exit dhd_module_cleanup(void)
2382 {
2383         DHD_TRACE(("%s: Enter\n", __func__));
2384
2385         dhd_bus_unregister();
2386 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2387         wifi_del_dev();
2388 #endif
2389         /* Call customer gpio to turn off power with WL_REG_ON signal */
2390         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2391 }
2392
2393 static int __init dhd_module_init(void)
2394 {
2395         int error;
2396
2397         DHD_TRACE(("%s: Enter\n", __func__));
2398
2399         /* Sanity check on the module parameters */
2400         do {
2401                 /* Both watchdog and DPC as tasklets are ok */
2402                 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2403                         break;
2404
2405                 /* If both watchdog and DPC are threads, TX must be deferred */
2406                 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2407                     && dhd_deferred_tx)
2408                         break;
2409
2410                 DHD_ERROR(("Invalid module parameters.\n"));
2411                 return -EINVAL;
2412         } while (0);
2413         /* Call customer gpio to turn on power with WL_REG_ON signal */
2414         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2415
2416 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2417         sema_init(&wifi_control_sem, 0);
2418
2419         error = wifi_add_dev();
2420         if (error) {
2421                 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2422                 goto failed;
2423         }
2424
2425         /* Waiting callback after platform_driver_register is done or
2426                  exit with error */
2427         if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2428                 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2429                         __func__);
2430                 /* remove device */
2431                 wifi_del_dev();
2432                 goto failed;
2433         }
2434 #endif  /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2435
2436         error = dhd_bus_register();
2437
2438         if (error) {
2439                 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2440                 goto failed;
2441         }
2442         return error;
2443
2444 failed:
2445         /* turn off power and exit */
2446         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2447         return -EINVAL;
2448 }
2449
2450 module_init(dhd_module_init);
2451 module_exit(dhd_module_cleanup);
2452
2453 /*
2454  * OS specific functions required to implement DHD driver in OS independent way
2455  */
2456 int dhd_os_proto_block(dhd_pub_t *pub)
2457 {
2458         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2459
2460         if (dhd) {
2461                 down(&dhd->proto_sem);
2462                 return 1;
2463         }
2464         return 0;
2465 }
2466
2467 int dhd_os_proto_unblock(dhd_pub_t *pub)
2468 {
2469         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2470
2471         if (dhd) {
2472                 up(&dhd->proto_sem);
2473                 return 1;
2474         }
2475
2476         return 0;
2477 }
2478
2479 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2480 {
2481         return (unsigned int)dhd_ioctl_timeout_msec;
2482 }
2483
2484 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2485 {
2486         dhd_ioctl_timeout_msec = (int)timeout_msec;
2487 }
2488
2489 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2490 {
2491         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2492         DECLARE_WAITQUEUE(wait, current);
2493         int timeout = dhd_ioctl_timeout_msec;
2494
2495         /* Convert timeout in millsecond to jiffies */
2496         timeout = timeout * HZ / 1000;
2497
2498         /* Wait until control frame is available */
2499         add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2500         set_current_state(TASK_INTERRUPTIBLE);
2501
2502         while (!(*condition) && (!signal_pending(current) && timeout))
2503                 timeout = schedule_timeout(timeout);
2504
2505         if (signal_pending(current))
2506                 *pending = true;
2507
2508         set_current_state(TASK_RUNNING);
2509         remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2510
2511         return timeout;
2512 }
2513
2514 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2515 {
2516         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2517
2518         if (waitqueue_active(&dhd->ioctl_resp_wait))
2519                 wake_up_interruptible(&dhd->ioctl_resp_wait);
2520
2521         return 0;
2522 }
2523
2524 void dhd_os_wd_timer(void *bus, uint wdtick)
2525 {
2526         dhd_pub_t *pub = bus;
2527         static uint save_dhd_watchdog_ms;
2528         dhd_info_t *dhd = (dhd_info_t *) pub->info;
2529
2530         /* don't start the wd until fw is loaded */
2531         if (pub->busstate == DHD_BUS_DOWN)
2532                 return;
2533
2534         /* Totally stop the timer */
2535         if (!wdtick && dhd->wd_timer_valid == true) {
2536                 del_timer_sync(&dhd->timer);
2537                 dhd->wd_timer_valid = false;
2538                 save_dhd_watchdog_ms = wdtick;
2539                 return;
2540         }
2541
2542         if (wdtick) {
2543                 dhd_watchdog_ms = (uint) wdtick;
2544
2545                 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2546
2547                         if (dhd->wd_timer_valid == true)
2548                                 /* Stop timer and restart at new value */
2549                                 del_timer_sync(&dhd->timer);
2550
2551                         /* Create timer again when watchdog period is
2552                            dynamically changed or in the first instance
2553                          */
2554                         dhd->timer.expires =
2555                             jiffies + dhd_watchdog_ms * HZ / 1000;
2556                         add_timer(&dhd->timer);
2557
2558                 } else {
2559                         /* Re arm the timer, at last watchdog period */
2560                         mod_timer(&dhd->timer,
2561                                   jiffies + dhd_watchdog_ms * HZ / 1000);
2562                 }
2563
2564                 dhd->wd_timer_valid = true;
2565                 save_dhd_watchdog_ms = wdtick;
2566         }
2567 }
2568
2569 void *dhd_os_open_image(char *filename)
2570 {
2571         struct file *fp;
2572
2573         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2574                 return wl_cfg80211_request_fw(filename);
2575
2576         fp = filp_open(filename, O_RDONLY, 0);
2577         /*
2578          * 2.6.11 (FC4) supports filp_open() but later revs don't?
2579          * Alternative:
2580          * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2581          * ???
2582          */
2583         if (IS_ERR(fp))
2584                 fp = NULL;
2585
2586         return fp;
2587 }
2588
2589 int dhd_os_get_image_block(char *buf, int len, void *image)
2590 {
2591         struct file *fp = (struct file *)image;
2592         int rdlen;
2593
2594         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2595                 return wl_cfg80211_read_fw(buf, len);
2596
2597         if (!image)
2598                 return 0;
2599
2600         rdlen = kernel_read(fp, fp->f_pos, buf, len);
2601         if (rdlen > 0)
2602                 fp->f_pos += rdlen;
2603
2604         return rdlen;
2605 }
2606
2607 void dhd_os_close_image(void *image)
2608 {
2609         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2610                 return wl_cfg80211_release_fw();
2611         if (image)
2612                 filp_close((struct file *)image, NULL);
2613 }
2614
2615 void dhd_os_sdlock(dhd_pub_t *pub)
2616 {
2617         dhd_info_t *dhd;
2618
2619         dhd = (dhd_info_t *) (pub->info);
2620
2621         if (dhd->threads_only)
2622                 down(&dhd->sdsem);
2623         else
2624                 spin_lock_bh(&dhd->sdlock);
2625 }
2626
2627 void dhd_os_sdunlock(dhd_pub_t *pub)
2628 {
2629         dhd_info_t *dhd;
2630
2631         dhd = (dhd_info_t *) (pub->info);
2632
2633         if (dhd->threads_only)
2634                 up(&dhd->sdsem);
2635         else
2636                 spin_unlock_bh(&dhd->sdlock);
2637 }
2638
2639 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2640 {
2641         dhd_info_t *dhd;
2642
2643         dhd = (dhd_info_t *) (pub->info);
2644         spin_lock_bh(&dhd->txqlock);
2645 }
2646
2647 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2648 {
2649         dhd_info_t *dhd;
2650
2651         dhd = (dhd_info_t *) (pub->info);
2652         spin_unlock_bh(&dhd->txqlock);
2653 }
2654
2655 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2656 {
2657 }
2658
2659 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2660 {
2661 }
2662
2663 void dhd_os_sdtxlock(dhd_pub_t *pub)
2664 {
2665         dhd_os_sdlock(pub);
2666 }
2667
2668 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2669 {
2670         dhd_os_sdunlock(pub);
2671 }
2672
2673 #if defined(CONFIG_WIRELESS_EXT)
2674 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev)
2675 {
2676         int res = 0;
2677         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2678
2679         res = wl_iw_get_wireless_stats(dev, &dhd->iw.wstats);
2680
2681         if (res == 0)
2682                 return &dhd->iw.wstats;
2683         else
2684                 return NULL;
2685 }
2686 #endif  /* defined(CONFIG_WIRELESS_EXT) */
2687
2688 static int
2689 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2690                   wl_event_msg_t *event, void **data)
2691 {
2692         int bcmerror = 0;
2693
2694         ASSERT(dhd != NULL);
2695
2696         bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2697         if (bcmerror != BCME_OK)
2698                 return bcmerror;
2699
2700 #if defined(CONFIG_WIRELESS_EXT)
2701         if (!IS_CFG80211_FAVORITE()) {
2702                 if ((dhd->iflist[*ifidx] == NULL)
2703                     || (dhd->iflist[*ifidx]->net == NULL)) {
2704                         DHD_ERROR(("%s Exit null pointer\n", __func__));
2705                         return bcmerror;
2706                 }
2707
2708                 if (dhd->iflist[*ifidx]->net)
2709                         wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2710         }
2711 #endif                          /* defined(CONFIG_WIRELESS_EXT)  */
2712
2713         if (IS_CFG80211_FAVORITE()) {
2714                 ASSERT(dhd->iflist[*ifidx] != NULL);
2715                 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2716                 if (dhd->iflist[*ifidx]->net)
2717                         wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2718                                           *data);
2719         }
2720
2721         return bcmerror;
2722 }
2723
2724 /* send up locally generated event */
2725 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2726 {
2727         switch (be32_to_cpu(event->event_type)) {
2728         default:
2729                 break;
2730         }
2731 }
2732
2733 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2734 {
2735         struct dhd_info *dhdinfo = dhd->info;
2736         dhd_os_sdunlock(dhd);
2737         wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2738                                          (*lockvar == false), HZ * 2);
2739         dhd_os_sdlock(dhd);
2740         return;
2741 }
2742
2743 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2744 {
2745         struct dhd_info *dhdinfo = dhd->info;
2746         if (waitqueue_active(&dhdinfo->ctrl_wait))
2747                 wake_up_interruptible(&dhdinfo->ctrl_wait);
2748         return;
2749 }
2750
2751 int dhd_dev_reset(struct net_device *dev, u8 flag)
2752 {
2753         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2754
2755         /* Turning off watchdog */
2756         if (flag)
2757                 dhd_os_wd_timer(&dhd->pub, 0);
2758
2759         dhd_bus_devreset(&dhd->pub, flag);
2760
2761         /* Turning on watchdog back */
2762         if (!flag)
2763                 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2764         DHD_ERROR(("%s:  WLAN OFF DONE\n", __func__));
2765
2766         return 1;
2767 }
2768
2769 int net_os_set_suspend_disable(struct net_device *dev, int val)
2770 {
2771         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2772         int ret = 0;
2773
2774         if (dhd) {
2775                 ret = dhd->pub.suspend_disable_flag;
2776                 dhd->pub.suspend_disable_flag = val;
2777         }
2778         return ret;
2779 }
2780
2781 int net_os_set_suspend(struct net_device *dev, int val)
2782 {
2783         int ret = 0;
2784 #if defined(CONFIG_HAS_EARLYSUSPEND)
2785         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2786
2787         if (dhd) {
2788                 dhd_os_proto_block(&dhd->pub);
2789                 ret = dhd_set_suspend(val, &dhd->pub);
2790                 dhd_os_proto_unblock(&dhd->pub);
2791         }
2792 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2793         return ret;
2794 }
2795
2796 int net_os_set_dtim_skip(struct net_device *dev, int val)
2797 {
2798         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2799
2800         if (dhd)
2801                 dhd->pub.dtim_skip = val;
2802
2803         return 0;
2804 }
2805
2806 int net_os_set_packet_filter(struct net_device *dev, int val)
2807 {
2808         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2809         int ret = 0;
2810
2811         /* Packet filtering is set only if we still in early-suspend and
2812          * we need either to turn it ON or turn it OFF
2813          * We can always turn it OFF in case of early-suspend, but we turn it
2814          * back ON only if suspend_disable_flag was not set
2815          */
2816         if (dhd && dhd->pub.up) {
2817                 dhd_os_proto_block(&dhd->pub);
2818                 if (dhd->pub.in_suspend) {
2819                         if (!val || (val && !dhd->pub.suspend_disable_flag))
2820                                 dhd_set_packet_filter(val, &dhd->pub);
2821                 }
2822                 dhd_os_proto_unblock(&dhd->pub);
2823         }
2824         return ret;
2825 }
2826
2827 void dhd_dev_init_ioctl(struct net_device *dev)
2828 {
2829         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2830
2831         dhd_preinit_ioctls(&dhd->pub);
2832 }
2833
2834 #ifdef PNO_SUPPORT
2835 /* Linux wrapper to call common dhd_pno_clean */
2836 int dhd_dev_pno_reset(struct net_device *dev)
2837 {
2838         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2839
2840         return dhd_pno_clean(&dhd->pub);
2841 }
2842
2843 /* Linux wrapper to call common dhd_pno_enable */
2844 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2845 {
2846         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2847
2848         return dhd_pno_enable(&dhd->pub, pfn_enabled);
2849 }
2850
2851 /* Linux wrapper to call common dhd_pno_set */
2852 int
2853 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2854                 unsigned char scan_fr)
2855 {
2856         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2857
2858         return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2859 }
2860
2861 /* Linux wrapper to get  pno status */
2862 int dhd_dev_get_pno_status(struct net_device *dev)
2863 {
2864         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2865
2866         return dhd_pno_get_status(&dhd->pub);
2867 }
2868
2869 #endif                          /* PNO_SUPPORT */
2870
2871 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2872 {
2873         return atomic_read(&dhd->pend_8021x_cnt);
2874 }
2875
2876 #define MAX_WAIT_FOR_8021X_TX   10
2877
2878 int dhd_wait_pend8021x(struct net_device *dev)
2879 {
2880         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2881         int timeout = 10 * HZ / 1000;
2882         int ntimes = MAX_WAIT_FOR_8021X_TX;
2883         int pend = dhd_get_pend_8021x_cnt(dhd);
2884
2885         while (ntimes && pend) {
2886                 if (pend) {
2887                         set_current_state(TASK_INTERRUPTIBLE);
2888                         schedule_timeout(timeout);
2889                         set_current_state(TASK_RUNNING);
2890                         ntimes--;
2891                 }
2892                 pend = dhd_get_pend_8021x_cnt(dhd);
2893         }
2894         return pend;
2895 }
2896
2897 #ifdef DHD_DEBUG
2898 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2899 {
2900         int ret = 0;
2901         struct file *fp;
2902         mm_segment_t old_fs;
2903         loff_t pos = 0;
2904
2905         /* change to KERNEL_DS address limit */
2906         old_fs = get_fs();
2907         set_fs(KERNEL_DS);
2908
2909         /* open file to write */
2910         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2911         if (!fp) {
2912                 DHD_ERROR(("%s: open file error\n", __func__));
2913                 ret = -1;
2914                 goto exit;
2915         }
2916
2917         /* Write buf to file */
2918         fp->f_op->write(fp, buf, size, &pos);
2919
2920 exit:
2921         /* free buf before return */
2922         kfree(buf);
2923         /* close file before return */
2924         if (fp)
2925                 filp_close(fp, current->files);
2926         /* restore previous address limit */
2927         set_fs(old_fs);
2928
2929         return ret;
2930 }
2931 #endif                          /* DHD_DEBUG */