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 <linuxver.h>
  36 #include <osl.h>
  37 #include <bcmutils.h>
  38 #include <bcmendian.h>
  39
  40 #include <proto/ethernet.h>
  41 #include <dngl_stats.h>
  42 #include <dhd.h>
  43 #include <dhd_bus.h>
  44 #include <dhd_proto.h>
  45 #include <dhd_dbg.h>
  46
  47 #include <wl_cfg80211.h>
  48
  49 #define EPI_VERSION_STR         "4.218.248.5"
  50
  51 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
  52 #include <linux/wifi_tiwlan.h>
  53
  54 struct semaphore wifi_control_sem;
  55
  56 struct dhd_bus *g_bus;
  57
  58 static struct wifi_platform_data *wifi_control_data;
  59 static struct resource *wifi_irqres;
  60
  61 int wifi_get_irq_number(unsigned long *irq_flags_ptr)
  62 {
  63         if (wifi_irqres) {
  64                 *irq_flags_ptr = wifi_irqres->flags & IRQF_TRIGGER_MASK;
  65                 return (int)wifi_irqres->start;
  66         }
  67 #ifdef CUSTOM_OOB_GPIO_NUM
  68         return CUSTOM_OOB_GPIO_NUM;
  69 #else
  70         return -1;
  71 #endif
  72 }
  73
  74 int wifi_set_carddetect(int on)
  75 {
  76         printk(KERN_ERR "%s = %d\n", __func__, on);
  77         if (wifi_control_data && wifi_control_data->set_carddetect)
  78                 wifi_control_data->set_carddetect(on);
  79         return 0;
  80 }
  81
  82 int wifi_set_power(int on, unsigned long msec)
  83 {
  84         printk(KERN_ERR "%s = %d\n", __func__, on);
  85         if (wifi_control_data && wifi_control_data->set_power)
  86                 wifi_control_data->set_power(on);
  87         if (msec)
  88                 mdelay(msec);
  89         return 0;
  90 }
  91
  92 int wifi_set_reset(int on, unsigned long msec)
  93 {
  94         printk(KERN_ERR "%s = %d\n", __func__, on);
  95         if (wifi_control_data && wifi_control_data->set_reset)
  96                 wifi_control_data->set_reset(on);
  97         if (msec)
  98                 mdelay(msec);
  99         return 0;
 100 }
 101
 102 static int wifi_probe(struct platform_device *pdev)
 103 {
 104         struct wifi_platform_data *wifi_ctrl =
 105             (struct wifi_platform_data *)(pdev->dev.platform_data);
 106
 107         printk(KERN_ERR "## %s\n", __func__);
 108         wifi_irqres =
 109             platform_get_resource_byname(pdev, IORESOURCE_IRQ,
 110                                          "bcm4329_wlan_irq");
 111         wifi_control_data = wifi_ctrl;
 112
 113         wifi_set_power(1, 0);   /* Power On */
 114         wifi_set_carddetect(1); /* CardDetect (0->1) */
 115
 116         up(&wifi_control_sem);
 117         return 0;
 118 }
 119
 120 static int wifi_remove(struct platform_device *pdev)
 121 {
 122         struct wifi_platform_data *wifi_ctrl =
 123             (struct wifi_platform_data *)(pdev->dev.platform_data);
 124
 125         printk(KERN_ERR "## %s\n", __func__);
 126         wifi_control_data = wifi_ctrl;
 127
 128         wifi_set_carddetect(0); /* CardDetect (1->0) */
 129         wifi_set_power(0, 0);   /* Power Off */
 130
 131         up(&wifi_control_sem);
 132         return 0;
 133 }
 134
 135 static int wifi_suspend(struct platform_device *pdev, pm_message_t state)
 136 {
 137         DHD_TRACE(("##> %s\n", __func__));
 138         return 0;
 139 }
 140
 141 static int wifi_resume(struct platform_device *pdev)
 142 {
 143         DHD_TRACE(("##> %s\n", __func__));
 144         return 0;
 145 }
 146
 147 static struct platform_driver wifi_device = {
 148         .probe = wifi_probe,
 149         .remove = wifi_remove,
 150         .suspend = wifi_suspend,
 151         .resume = wifi_resume,
 152         .driver = {
 153                    .name = "bcm4329_wlan",
 154                    }
 155 };
 156
 157 int wifi_add_dev(void)
 158 {
 159         DHD_TRACE(("## Calling platform_driver_register\n"));
 160         return platform_driver_register(&wifi_device);
 161 }
 162
 163 void wifi_del_dev(void)
 164 {
 165         DHD_TRACE(("## Unregister platform_driver_register\n"));
 166         platform_driver_unregister(&wifi_device);
 167 }
 168 #endif  /* defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
 169
 170 #if defined(CONFIG_PM_SLEEP)
 171 #include <linux/suspend.h>
 172 volatile bool dhd_mmc_suspend = false;
 173 DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait);
 174 #endif  /*  defined(CONFIG_PM_SLEEP) */
 175
 176 #if defined(OOB_INTR_ONLY)
 177 extern void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable);
 178 #endif  /* defined(OOB_INTR_ONLY) */
 179
 180 MODULE_AUTHOR("Broadcom Corporation");
 181 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
 182 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
 183 MODULE_LICENSE("Dual BSD/GPL");
 184
 185 #define DRV_MODULE_NAME "brcmfmac"
 186
 187 /* Linux wireless extension support */
 188 #if defined(CONFIG_WIRELESS_EXT)
 189 #include <wl_iw.h>
 190 extern wl_iw_extra_params_t g_wl_iw_params;
 191 #endif          /* defined(CONFIG_WIRELESS_EXT) */
 192
 193 #if defined(CONFIG_HAS_EARLYSUSPEND)
 194 #include <linux/earlysuspend.h>
 195 extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
 196                             uint len);
 197 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 198
 199 #ifdef PKT_FILTER_SUPPORT
 200 extern void dhd_pktfilter_offload_set(dhd_pub_t *dhd, char *arg);
 201 extern void dhd_pktfilter_offload_enable(dhd_pub_t *dhd, char *arg, int enable,
 202                                          int master_mode);
 203 #endif
 204
 205 /* Interface control information */
 206 typedef struct dhd_if {
 207         struct dhd_info *info;  /* back pointer to dhd_info */
 208         /* OS/stack specifics */
 209         struct net_device *net;
 210         struct net_device_stats stats;
 211         int idx;                /* iface idx in dongle */
 212         int state;              /* interface state */
 213         uint subunit;           /* subunit */
 214         u8 mac_addr[ETHER_ADDR_LEN];    /* assigned MAC address */
 215         bool attached;          /* Delayed attachment when unset */
 216         bool txflowcontrol;     /* Per interface flow control indicator */
 217         char name[IFNAMSIZ];    /* linux interface name */
 218 } dhd_if_t;
 219
 220 /* Local private structure (extension of pub) */
 221 typedef struct dhd_info {
 222 #if defined(CONFIG_WIRELESS_EXT)
 223         wl_iw_t iw;             /* wireless extensions state (must be first) */
 224 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
 225
 226         dhd_pub_t pub;
 227
 228         /* OS/stack specifics */
 229         dhd_if_t *iflist[DHD_MAX_IFS];
 230
 231         struct semaphore proto_sem;
 232         wait_queue_head_t ioctl_resp_wait;
 233         struct timer_list timer;
 234         bool wd_timer_valid;
 235         struct tasklet_struct tasklet;
 236         spinlock_t sdlock;
 237         spinlock_t txqlock;
 238         /* Thread based operation */
 239         bool threads_only;
 240         struct semaphore sdsem;
 241         struct task_struct *watchdog_tsk;
 242         struct semaphore watchdog_sem;
 243         struct task_struct *dpc_tsk;
 244         struct semaphore dpc_sem;
 245
 246         /* Thread to issue ioctl for multicast */
 247         struct task_struct *sysioc_tsk;
 248         struct semaphore sysioc_sem;
 249         bool set_multicast;
 250         bool set_macaddress;
 251         struct ether_addr macvalue;
 252         wait_queue_head_t ctrl_wait;
 253         atomic_t pend_8021x_cnt;
 254
 255 #ifdef CONFIG_HAS_EARLYSUSPEND
 256         struct early_suspend early_suspend;
 257 #endif                          /* CONFIG_HAS_EARLYSUSPEND */
 258 } dhd_info_t;
 259
 260 /* Definitions to provide path to the firmware and nvram
 261  * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt"
 262  */
 263 char firmware_path[MOD_PARAM_PATHLEN];
 264 char nvram_path[MOD_PARAM_PATHLEN];
 265
 266 /* load firmware and/or nvram values from the filesystem */
 267 module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0);
 268 module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0);
 269
 270 /* Error bits */
 271 module_param(dhd_msg_level, int, 0);
 272
 273 /* Spawn a thread for system ioctls (set mac, set mcast) */
 274 uint dhd_sysioc = true;
 275 module_param(dhd_sysioc, uint, 0);
 276
 277 /* Watchdog interval */
 278 uint dhd_watchdog_ms = 10;
 279 module_param(dhd_watchdog_ms, uint, 0);
 280
 281 #ifdef DHD_DEBUG
 282 /* Console poll interval */
 283 uint dhd_console_ms;
 284 module_param(dhd_console_ms, uint, 0);
 285 #endif                          /* DHD_DEBUG */
 286
 287 /* ARP offload agent mode : Enable ARP Host Auto-Reply
 288 and ARP Peer Auto-Reply */
 289 uint dhd_arp_mode = 0xb;
 290 module_param(dhd_arp_mode, uint, 0);
 291
 292 /* ARP offload enable */
 293 uint dhd_arp_enable = true;
 294 module_param(dhd_arp_enable, uint, 0);
 295
 296 /* Global Pkt filter enable control */
 297 uint dhd_pkt_filter_enable = true;
 298 module_param(dhd_pkt_filter_enable, uint, 0);
 299
 300 /*  Pkt filter init setup */
 301 uint dhd_pkt_filter_init;
 302 module_param(dhd_pkt_filter_init, uint, 0);
 303
 304 /* Pkt filter mode control */
 305 uint dhd_master_mode = true;
 306 module_param(dhd_master_mode, uint, 1);
 307
 308 /* Watchdog thread priority, -1 to use kernel timer */
 309 int dhd_watchdog_prio = 97;
 310 module_param(dhd_watchdog_prio, int, 0);
 311
 312 /* DPC thread priority, -1 to use tasklet */
 313 int dhd_dpc_prio = 98;
 314 module_param(dhd_dpc_prio, int, 0);
 315
 316 /* DPC thread priority, -1 to use tasklet */
 317 extern int dhd_dongle_memsize;
 318 module_param(dhd_dongle_memsize, int, 0);
 319
 320 /* Contorl fw roaming */
 321 #ifdef CUSTOMER_HW2
 322 uint dhd_roam;
 323 #else
 324 uint dhd_roam = 1;
 325 #endif
 326
 327 /* Control radio state */
 328 uint dhd_radio_up = 1;
 329
 330 /* Network inteface name */
 331 char iface_name[IFNAMSIZ];
 332 module_param_string(iface_name, iface_name, IFNAMSIZ, 0);
 333
 334 /* The following are specific to the SDIO dongle */
 335
 336 /* IOCTL response timeout */
 337 int dhd_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;
 338
 339 /* Idle timeout for backplane clock */
 340 int dhd_idletime = DHD_IDLETIME_TICKS;
 341 module_param(dhd_idletime, int, 0);
 342
 343 /* Use polling */
 344 uint dhd_poll = false;
 345 module_param(dhd_poll, uint, 0);
 346
 347 /* Use cfg80211 */
 348 uint dhd_cfg80211 = true;
 349 module_param(dhd_cfg80211, uint, 0);
 350
 351 /* Use interrupts */
 352 uint dhd_intr = true;
 353 module_param(dhd_intr, uint, 0);
 354
 355 /* SDIO Drive Strength (in milliamps) */
 356 uint dhd_sdiod_drive_strength = 6;
 357 module_param(dhd_sdiod_drive_strength, uint, 0);
 358
 359 /* Tx/Rx bounds */
 360 extern uint dhd_txbound;
 361 extern uint dhd_rxbound;
 362 module_param(dhd_txbound, uint, 0);
 363 module_param(dhd_rxbound, uint, 0);
 364
 365 /* Deferred transmits */
 366 extern uint dhd_deferred_tx;
 367 module_param(dhd_deferred_tx, uint, 0);
 368
 369 #ifdef SDTEST
 370 /* Echo packet generator (pkts/s) */
 371 uint dhd_pktgen;
 372 module_param(dhd_pktgen, uint, 0);
 373
 374 /* Echo packet len (0 => sawtooth, max 2040) */
 375 uint dhd_pktgen_len;
 376 module_param(dhd_pktgen_len, uint, 0);
 377 #endif
 378
 379 #define FAVORITE_WIFI_CP        (!!dhd_cfg80211)
 380 #define IS_CFG80211_FAVORITE() FAVORITE_WIFI_CP
 381 #define DBG_CFG80211_GET() ((dhd_cfg80211 & WL_DBG_MASK) >> 1)
 382 #define NO_FW_REQ() (dhd_cfg80211 & 0x80)
 383
 384 /* Version string to report */
 385 #ifdef DHD_DEBUG
 386 #define DHD_COMPILED "\nCompiled in " SRCBASE
 387 #else
 388 #define DHD_COMPILED
 389 #endif
 390
 391 static char dhd_version[] = "Dongle Host Driver, version " EPI_VERSION_STR
 392 #ifdef DHD_DEBUG
 393 "\nCompiled in " " on " __DATE__ " at " __TIME__
 394 #endif
 395 ;
 396
 397 #if defined(CONFIG_WIRELESS_EXT)
 398 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev);
 399 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
 400
 401 static void dhd_dpc(unsigned long data);
 402 /* forward decl */
 403 extern int dhd_wait_pend8021x(struct net_device *dev);
 404
 405 #ifdef TOE
 406 #ifndef BDC
 407 #error TOE requires BDC
 408 #endif                          /* !BDC */
 409 static int dhd_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol);
 410 static int dhd_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol);
 411 #endif                          /* TOE */
 412
 413 static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
 414                              wl_event_msg_t *event_ptr, void **data_ptr);
 415
 416 #if defined(CONFIG_PM_SLEEP)
 417 static int dhd_sleep_pm_callback(struct notifier_block *nfb,
 418                                  unsigned long action, void *ignored)
 419 {
 420         switch (action) {
 421         case PM_HIBERNATION_PREPARE:
 422         case PM_SUSPEND_PREPARE:
 423                 dhd_mmc_suspend = true;
 424                 return NOTIFY_OK;
 425         case PM_POST_HIBERNATION:
 426         case PM_POST_SUSPEND:
 427                 dhd_mmc_suspend = false;
 428                 return NOTIFY_OK;
 429         }
 430         return 0;
 431 }
 432
 433 static struct notifier_block dhd_sleep_pm_notifier = {
 434         .notifier_call = dhd_sleep_pm_callback,
 435         .priority = 0
 436 };
 437
 438 extern int register_pm_notifier(struct notifier_block *nb);
 439 extern int unregister_pm_notifier(struct notifier_block *nb);
 440 #endif  /* defined(CONFIG_PM_SLEEP) */
 441         /* && defined(DHD_GPL) */
 442 static void dhd_set_packet_filter(int value, dhd_pub_t *dhd)
 443 {
 444 #ifdef PKT_FILTER_SUPPORT
 445         DHD_TRACE(("%s: %d\n", __func__, value));
 446         /* 1 - Enable packet filter, only allow unicast packet to send up */
 447         /* 0 - Disable packet filter */
 448         if (dhd_pkt_filter_enable) {
 449                 int i;
 450
 451                 for (i = 0; i < dhd->pktfilter_count; i++) {
 452                         dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
 453                         dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
 454                                                      value, dhd_master_mode);
 455                 }
 456         }
 457 #endif
 458 }
 459
 460 #if defined(CONFIG_HAS_EARLYSUSPEND)
 461 static int dhd_set_suspend(int value, dhd_pub_t *dhd)
 462 {
 463         int power_mode = PM_MAX;
 464         /* wl_pkt_filter_enable_t       enable_parm; */
 465         char iovbuf[32];
 466         int bcn_li_dtim = 3;
 467 #ifdef CUSTOMER_HW2
 468         uint roamvar = 1;
 469 #endif                          /* CUSTOMER_HW2 */
 470
 471         DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
 472                    __func__, value, dhd->in_suspend));
 473
 474         if (dhd && dhd->up) {
 475                 if (value && dhd->in_suspend) {
 476
 477                         /* Kernel suspended */
 478                         DHD_TRACE(("%s: force extra Suspend setting\n",
 479                                    __func__));
 480
 481                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 482                                          (char *)&power_mode,
 483                                          sizeof(power_mode));
 484
 485                         /* Enable packet filter, only allow unicast
 486                                  packet to send up */
 487                         dhd_set_packet_filter(1, dhd);
 488
 489                         /* if dtim skip setup as default force it
 490                          * to wake each thrid dtim
 491                          * for better power saving.
 492                          * Note that side effect is chance to miss BC/MC
 493                          * packet
 494                          */
 495                         if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
 496                                 bcn_li_dtim = 3;
 497                         else
 498                                 bcn_li_dtim = dhd->dtim_skip;
 499                         bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
 500                                     4, iovbuf, sizeof(iovbuf));
 501                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 502                                          sizeof(iovbuf));
 503 #ifdef CUSTOMER_HW2
 504                         /* Disable build-in roaming to allowed \
 505                          * supplicant to take of romaing
 506                          */
 507                         bcm_mkiovar("roam_off", (char *)&roamvar, 4,
 508                                     iovbuf, sizeof(iovbuf));
 509                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 510                                          sizeof(iovbuf));
 511 #endif                          /* CUSTOMER_HW2 */
 512                 } else {
 513
 514                         /* Kernel resumed  */
 515                         DHD_TRACE(("%s: Remove extra suspend setting\n",
 516                                    __func__));
 517
 518                         power_mode = PM_FAST;
 519                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_PM,
 520                                          (char *)&power_mode,
 521                                          sizeof(power_mode));
 522
 523                         /* disable pkt filter */
 524                         dhd_set_packet_filter(0, dhd);
 525
 526                         /* restore pre-suspend setting for dtim_skip */
 527                         bcm_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip,
 528                                     4, iovbuf, sizeof(iovbuf));
 529
 530                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 531                                          sizeof(iovbuf));
 532 #ifdef CUSTOMER_HW2
 533                         roamvar = 0;
 534                         bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf,
 535                                     sizeof(iovbuf));
 536                         dhdcdc_set_ioctl(dhd, 0, WLC_SET_VAR, iovbuf,
 537                                          sizeof(iovbuf));
 538 #endif                          /* CUSTOMER_HW2 */
 539                 }
 540         }
 541
 542         return 0;
 543 }
 544
 545 static void dhd_suspend_resume_helper(struct dhd_info *dhd, int val)
 546 {
 547         dhd_pub_t *dhdp = &dhd->pub;
 548
 549         dhd_os_proto_block(dhdp);
 550         /* Set flag when early suspend was called */
 551         dhdp->in_suspend = val;
 552         if (!dhdp->suspend_disable_flag)
 553                 dhd_set_suspend(val, dhdp);
 554         dhd_os_proto_unblock(dhdp);
 555 }
 556
 557 static void dhd_early_suspend(struct early_suspend *h)
 558 {
 559         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 560
 561         DHD_TRACE(("%s: enter\n", __func__));
 562
 563         if (dhd)
 564                 dhd_suspend_resume_helper(dhd, 1);
 565
 566 }
 567
 568 static void dhd_late_resume(struct early_suspend *h)
 569 {
 570         struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
 571
 572         DHD_TRACE(("%s: enter\n", __func__));
 573
 574         if (dhd)
 575                 dhd_suspend_resume_helper(dhd, 0);
 576 }
 577 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
 578
 579 /*
 580  * Generalized timeout mechanism.  Uses spin sleep with exponential
 581  * back-off until
 582  * the sleep time reaches one jiffy, then switches over to task delay.  Usage:
 583  *
 584  *      dhd_timeout_start(&tmo, usec);
 585  *      while (!dhd_timeout_expired(&tmo))
 586  *              if (poll_something())
 587  *                      break;
 588  *      if (dhd_timeout_expired(&tmo))
 589  *              fatal();
 590  */
 591
 592 void dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
 593 {
 594         tmo->limit = usec;
 595         tmo->increment = 0;
 596         tmo->elapsed = 0;
 597         tmo->tick = 1000000 / HZ;
 598 }
 599
 600 int dhd_timeout_expired(dhd_timeout_t *tmo)
 601 {
 602         /* Does nothing the first call */
 603         if (tmo->increment == 0) {
 604                 tmo->increment = 1;
 605                 return 0;
 606         }
 607
 608         if (tmo->elapsed >= tmo->limit)
 609                 return 1;
 610
 611         /* Add the delay that's about to take place */
 612         tmo->elapsed += tmo->increment;
 613
 614         if (tmo->increment < tmo->tick) {
 615                 udelay(tmo->increment);
 616                 tmo->increment *= 2;
 617                 if (tmo->increment > tmo->tick)
 618                         tmo->increment = tmo->tick;
 619         } else {
 620                 wait_queue_head_t delay_wait;
 621                 DECLARE_WAITQUEUE(wait, current);
 622                 int pending;
 623                 init_waitqueue_head(&delay_wait);
 624                 add_wait_queue(&delay_wait, &wait);
 625                 set_current_state(TASK_INTERRUPTIBLE);
 626                 schedule_timeout(1);
 627                 pending = signal_pending(current);
 628                 remove_wait_queue(&delay_wait, &wait);
 629                 set_current_state(TASK_RUNNING);
 630                 if (pending)
 631                         return 1;       /* Interrupted */
 632         }
 633
 634         return 0;
 635 }
 636
 637 static int dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
 638 {
 639         int i = 0;
 640
 641         ASSERT(dhd);
 642         while (i < DHD_MAX_IFS) {
 643                 if (dhd->iflist[i] && (dhd->iflist[i]->net == net))
 644                         return i;
 645                 i++;
 646         }
 647
 648         return DHD_BAD_IF;
 649 }
 650
 651 int dhd_ifname2idx(dhd_info_t *dhd, char *name)
 652 {
 653         int i = DHD_MAX_IFS;
 654
 655         ASSERT(dhd);
 656
 657         if (name == NULL || *name == '\0')
 658                 return 0;
 659
 660         while (--i > 0)
 661                 if (dhd->iflist[i]
 662                     && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ))
 663                         break;
 664
 665         DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name));
 666
 667         return i;               /* default - the primary interface */
 668 }
 669
 670 char *dhd_ifname(dhd_pub_t *dhdp, int ifidx)
 671 {
 672         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
 673
 674         ASSERT(dhd);
 675
 676         if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
 677                 DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx));
 678                 return "<if_bad>";
 679         }
 680
 681         if (dhd->iflist[ifidx] == NULL) {
 682                 DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx));
 683                 return "<if_null>";
 684         }
 685
 686         if (dhd->iflist[ifidx]->net)
 687                 return dhd->iflist[ifidx]->net->name;
 688
 689         return "<if_none>";
 690 }
 691
 692 static void _dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
 693 {
 694         struct net_device *dev;
 695         struct netdev_hw_addr *ha;
 696         u32 allmulti, cnt;
 697
 698         wl_ioctl_t ioc;
 699         char *buf, *bufp;
 700         uint buflen;
 701         int ret;
 702
 703         ASSERT(dhd && dhd->iflist[ifidx]);
 704         dev = dhd->iflist[ifidx]->net;
 705         cnt = netdev_mc_count(dev);
 706
 707         /* Determine initial value of allmulti flag */
 708         allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
 709
 710         /* Send down the multicast list first. */
 711
 712         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETHER_ADDR_LEN);
 713         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 714         if (!bufp) {
 715                 DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
 716                            dhd_ifname(&dhd->pub, ifidx), cnt));
 717                 return;
 718         }
 719
 720         strcpy(bufp, "mcast_list");
 721         bufp += strlen("mcast_list") + 1;
 722
 723         cnt = htol32(cnt);
 724         memcpy(bufp, &cnt, sizeof(cnt));
 725         bufp += sizeof(cnt);
 726
 727         netdev_for_each_mc_addr(ha, dev) {
 728                 if (!cnt)
 729                         break;
 730                 memcpy(bufp, ha->addr, ETHER_ADDR_LEN);
 731                 bufp += ETHER_ADDR_LEN;
 732                 cnt--;
 733         }
 734
 735         memset(&ioc, 0, sizeof(ioc));
 736         ioc.cmd = WLC_SET_VAR;
 737         ioc.buf = buf;
 738         ioc.len = buflen;
 739         ioc.set = true;
 740
 741         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 742         if (ret < 0) {
 743                 DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
 744                            dhd_ifname(&dhd->pub, ifidx), cnt));
 745                 allmulti = cnt ? true : allmulti;
 746         }
 747
 748         kfree(buf);
 749
 750         /* Now send the allmulti setting.  This is based on the setting in the
 751          * net_device flags, but might be modified above to be turned on if we
 752          * were trying to set some addresses and dongle rejected it...
 753          */
 754
 755         buflen = sizeof("allmulti") + sizeof(allmulti);
 756         buf = kmalloc(buflen, GFP_ATOMIC);
 757         if (!buf) {
 758                 DHD_ERROR(("%s: out of memory for allmulti\n",
 759                            dhd_ifname(&dhd->pub, ifidx)));
 760                 return;
 761         }
 762         allmulti = htol32(allmulti);
 763
 764         if (!bcm_mkiovar
 765             ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
 766                 DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d "
 767                         "buflen %u\n", dhd_ifname(&dhd->pub, ifidx),
 768                         (int)sizeof(allmulti), buflen));
 769                 kfree(buf);
 770                 return;
 771         }
 772
 773         memset(&ioc, 0, sizeof(ioc));
 774         ioc.cmd = WLC_SET_VAR;
 775         ioc.buf = buf;
 776         ioc.len = buflen;
 777         ioc.set = true;
 778
 779         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 780         if (ret < 0) {
 781                 DHD_ERROR(("%s: set allmulti %d failed\n",
 782                            dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
 783         }
 784
 785         kfree(buf);
 786
 787         /* Finally, pick up the PROMISC flag as well, like the NIC
 788                  driver does */
 789
 790         allmulti = (dev->flags & IFF_PROMISC) ? true : false;
 791         allmulti = htol32(allmulti);
 792
 793         memset(&ioc, 0, sizeof(ioc));
 794         ioc.cmd = WLC_SET_PROMISC;
 795         ioc.buf = &allmulti;
 796         ioc.len = sizeof(allmulti);
 797         ioc.set = true;
 798
 799         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 800         if (ret < 0) {
 801                 DHD_ERROR(("%s: set promisc %d failed\n",
 802                            dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
 803         }
 804 }
 805
 806 static int
 807 _dhd_set_mac_address(dhd_info_t *dhd, int ifidx, struct ether_addr *addr)
 808 {
 809         char buf[32];
 810         wl_ioctl_t ioc;
 811         int ret;
 812
 813         DHD_TRACE(("%s enter\n", __func__));
 814         if (!bcm_mkiovar
 815             ("cur_etheraddr", (char *)addr, ETHER_ADDR_LEN, buf, 32)) {
 816                 DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n",
 817                            dhd_ifname(&dhd->pub, ifidx)));
 818                 return -1;
 819         }
 820         memset(&ioc, 0, sizeof(ioc));
 821         ioc.cmd = WLC_SET_VAR;
 822         ioc.buf = buf;
 823         ioc.len = 32;
 824         ioc.set = true;
 825
 826         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
 827         if (ret < 0) {
 828                 DHD_ERROR(("%s: set cur_etheraddr failed\n",
 829                            dhd_ifname(&dhd->pub, ifidx)));
 830         } else {
 831                 memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETHER_ADDR_LEN);
 832         }
 833
 834         return ret;
 835 }
 836
 837 #ifdef SOFTAP
 838 extern struct net_device *ap_net_dev;
 839 #endif
 840
 841 static void dhd_op_if(dhd_if_t *ifp)
 842 {
 843         dhd_info_t *dhd;
 844         int ret = 0, err = 0;
 845
 846         ASSERT(ifp && ifp->info && ifp->idx);   /* Virtual interfaces only */
 847
 848         dhd = ifp->info;
 849
 850         DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state));
 851
 852         switch (ifp->state) {
 853         case WLC_E_IF_ADD:
 854                 /*
 855                  * Delete the existing interface before overwriting it
 856                  * in case we missed the WLC_E_IF_DEL event.
 857                  */
 858                 if (ifp->net != NULL) {
 859                         DHD_ERROR(("%s: ERROR: netdev:%s already exists, "
 860                         "try free & unregister\n",
 861                         __func__, ifp->net->name));
 862                         netif_stop_queue(ifp->net);
 863                         unregister_netdev(ifp->net);
 864                         free_netdev(ifp->net);
 865                 }
 866                 /* Allocate etherdev, including space for private structure */
 867                 ifp->net = alloc_etherdev(sizeof(dhd));
 868                 if (!ifp->net) {
 869                         DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
 870                         ret = -ENOMEM;
 871                 }
 872                 if (ret == 0) {
 873                         strcpy(ifp->net->name, ifp->name);
 874                         memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd));
 875                         err = dhd_net_attach(&dhd->pub, ifp->idx);
 876                         if (err != 0) {
 877                                 DHD_ERROR(("%s: dhd_net_attach failed, "
 878                                         "err %d\n",
 879                                         __func__, err));
 880                                 ret = -EOPNOTSUPP;
 881                         } else {
 882 #ifdef SOFTAP
 883                                 /* semaphore that the soft AP CODE
 884                                          waits on */
 885                                 extern struct semaphore ap_eth_sema;
 886
 887                                 /* save ptr to wl0.1 netdev for use
 888                                          in wl_iw.c  */
 889                                 ap_net_dev = ifp->net;
 890                                 /* signal to the SOFTAP 'sleeper' thread,
 891                                          wl0.1 is ready */
 892                                 up(&ap_eth_sema);
 893 #endif
 894                                 DHD_TRACE(("\n ==== pid:%x, net_device for "
 895                                         "if:%s created ===\n\n",
 896                                         current->pid, ifp->net->name));
 897                                 ifp->state = 0;
 898                         }
 899                 }
 900                 break;
 901         case WLC_E_IF_DEL:
 902                 if (ifp->net != NULL) {
 903                         DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n",
 904                                    __func__));
 905                         netif_stop_queue(ifp->net);
 906                         unregister_netdev(ifp->net);
 907                         ret = DHD_DEL_IF;       /* Make sure the free_netdev()
 908                                                          is called */
 909                 }
 910                 break;
 911         default:
 912                 DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state));
 913                 ASSERT(!ifp->state);
 914                 break;
 915         }
 916
 917         if (ret < 0) {
 918                 if (ifp->net)
 919                         free_netdev(ifp->net);
 920
 921                 dhd->iflist[ifp->idx] = NULL;
 922                 kfree(ifp);
 923 #ifdef SOFTAP
 924                 if (ifp->net == ap_net_dev)
 925                         ap_net_dev = NULL;      /*  NULL  SOFTAP global
 926                                                          wl0.1 as well */
 927 #endif                          /*  SOFTAP */
 928         }
 929 }
 930
 931 static int _dhd_sysioc_thread(void *data)
 932 {
 933         dhd_info_t *dhd = (dhd_info_t *) data;
 934         int i;
 935 #ifdef SOFTAP
 936         bool in_ap = false;
 937 #endif
 938
 939         allow_signal(SIGTERM);
 940
 941         while (down_interruptible(&dhd->sysioc_sem) == 0) {
 942                 if (kthread_should_stop())
 943                         break;
 944                 for (i = 0; i < DHD_MAX_IFS; i++) {
 945                         if (dhd->iflist[i]) {
 946 #ifdef SOFTAP
 947                                 in_ap = (ap_net_dev != NULL);
 948 #endif                          /* SOFTAP */
 949                                 if (dhd->iflist[i]->state)
 950                                         dhd_op_if(dhd->iflist[i]);
 951 #ifdef SOFTAP
 952                                 if (dhd->iflist[i] == NULL) {
 953                                         DHD_TRACE(("\n\n %s: interface %d "
 954                                                 "removed!\n", __func__, i));
 955                                         continue;
 956                                 }
 957
 958                                 if (in_ap && dhd->set_macaddress) {
 959                                         DHD_TRACE(("attempt to set MAC for %s "
 960                                                 "in AP Mode," "blocked. \n",
 961                                                 dhd->iflist[i]->net->name));
 962                                         dhd->set_macaddress = false;
 963                                         continue;
 964                                 }
 965
 966                                 if (in_ap && dhd->set_multicast) {
 967                                         DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked. \n",
 968                                                 dhd->iflist[i]->net->name));
 969                                         dhd->set_multicast = false;
 970                                         continue;
 971                                 }
 972 #endif                          /* SOFTAP */
 973                                 if (dhd->set_multicast) {
 974                                         dhd->set_multicast = false;
 975                                         _dhd_set_multicast_list(dhd, i);
 976                                 }
 977                                 if (dhd->set_macaddress) {
 978                                         dhd->set_macaddress = false;
 979                                         _dhd_set_mac_address(dhd, i,
 980                                                              &dhd->macvalue);
 981                                 }
 982                         }
 983                 }
 984         }
 985         return 0;
 986 }
 987
 988 static int dhd_set_mac_address(struct net_device *dev, void *addr)
 989 {
 990         int ret = 0;
 991
 992         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
 993         struct sockaddr *sa = (struct sockaddr *)addr;
 994         int ifidx;
 995
 996         ifidx = dhd_net2idx(dhd, dev);
 997         if (ifidx == DHD_BAD_IF)
 998                 return -1;
 999
1000         ASSERT(dhd->sysioc_tsk);
1001         memcpy(&dhd->macvalue, sa->sa_data, ETHER_ADDR_LEN);
1002         dhd->set_macaddress = true;
1003         up(&dhd->sysioc_sem);
1004
1005         return ret;
1006 }
1007
1008 static void dhd_set_multicast_list(struct net_device *dev)
1009 {
1010         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
1011         int ifidx;
1012
1013         ifidx = dhd_net2idx(dhd, dev);
1014         if (ifidx == DHD_BAD_IF)
1015                 return;
1016
1017         ASSERT(dhd->sysioc_tsk);
1018         dhd->set_multicast = true;
1019         up(&dhd->sysioc_sem);
1020 }
1021
1022 int dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, void *pktbuf)
1023 {
1024         int ret;
1025         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1026
1027         /* Reject if down */
1028         if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN))
1029                 return -ENODEV;
1030
1031         /* Update multicast statistic */
1032         if (PKTLEN(pktbuf) >= ETHER_ADDR_LEN) {
1033                 u8 *pktdata = (u8 *) PKTDATA(pktbuf);
1034                 struct ether_header *eh = (struct ether_header *)pktdata;
1035
1036                 if (ETHER_ISMULTI(eh->ether_dhost))
1037                         dhdp->tx_multicast++;
1038                 if (ntoh16(eh->ether_type) == ETHER_TYPE_802_1X)
1039                         atomic_inc(&dhd->pend_8021x_cnt);
1040         }
1041
1042         /* If the protocol uses a data header, apply it */
1043         dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
1044
1045         /* Use bus module to send data frame */
1046 #ifdef BCMDBUS
1047         ret = dbus_send_pkt(dhdp->dbus, pktbuf, NULL /* pktinfo */);
1048 #else
1049         WAKE_LOCK_TIMEOUT(dhdp, WAKE_LOCK_TMOUT, 25);
1050         ret = dhd_bus_txdata(dhdp->bus, pktbuf);
1051 #endif                          /* BCMDBUS */
1052
1053         return ret;
1054 }
1055
1056 static int dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
1057 {
1058         int ret;
1059         void *pktbuf;
1060         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1061         int ifidx;
1062
1063         DHD_TRACE(("%s: Enter\n", __func__));
1064
1065         /* Reject if down */
1066         if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) {
1067                 DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n",
1068                            __func__, dhd->pub.up, dhd->pub.busstate));
1069                 netif_stop_queue(net);
1070                 return -ENODEV;
1071         }
1072
1073         ifidx = dhd_net2idx(dhd, net);
1074         if (ifidx == DHD_BAD_IF) {
1075                 DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx));
1076                 netif_stop_queue(net);
1077                 return -ENODEV;
1078         }
1079
1080         /* Make sure there's enough room for any header */
1081         if (skb_headroom(skb) < dhd->pub.hdrlen) {
1082                 struct sk_buff *skb2;
1083
1084                 DHD_INFO(("%s: insufficient headroom\n",
1085                           dhd_ifname(&dhd->pub, ifidx)));
1086                 dhd->pub.tx_realloc++;
1087                 skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen);
1088                 dev_kfree_skb(skb);
1089                 skb = skb2;
1090                 if (skb == NULL) {
1091                         DHD_ERROR(("%s: skb_realloc_headroom failed\n",
1092                                    dhd_ifname(&dhd->pub, ifidx)));
1093                         ret = -ENOMEM;
1094                         goto done;
1095                 }
1096         }
1097
1098         /* Convert to packet */
1099         pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb);
1100         if (!pktbuf) {
1101                 DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
1102                            dhd_ifname(&dhd->pub, ifidx)));
1103                 dev_kfree_skb_any(skb);
1104                 ret = -ENOMEM;
1105                 goto done;
1106         }
1107
1108         ret = dhd_sendpkt(&dhd->pub, ifidx, pktbuf);
1109
1110 done:
1111         if (ret)
1112                 dhd->pub.dstats.tx_dropped++;
1113         else
1114                 dhd->pub.tx_packets++;
1115
1116         /* Return ok: we always eat the packet */
1117         return 0;
1118 }
1119
1120 void dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
1121 {
1122         struct net_device *net;
1123         dhd_info_t *dhd = dhdp->info;
1124
1125         DHD_TRACE(("%s: Enter\n", __func__));
1126
1127         dhdp->txoff = state;
1128         ASSERT(dhd && dhd->iflist[ifidx]);
1129         net = dhd->iflist[ifidx]->net;
1130         if (state == ON)
1131                 netif_stop_queue(net);
1132         else
1133                 netif_wake_queue(net);
1134 }
1135
1136 void dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, void *pktbuf, int numpkt)
1137 {
1138         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1139         struct sk_buff *skb;
1140         unsigned char *eth;
1141         uint len;
1142         void *data, *pnext, *save_pktbuf;
1143         int i;
1144         dhd_if_t *ifp;
1145         wl_event_msg_t event;
1146
1147         DHD_TRACE(("%s: Enter\n", __func__));
1148
1149         save_pktbuf = pktbuf;
1150
1151         for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
1152
1153                 pnext = PKTNEXT(pktbuf);
1154                 PKTSETNEXT(pktbuf, NULL);
1155
1156                 skb = PKTTONATIVE(dhdp->osh, pktbuf);
1157
1158                 /* Get the protocol, maintain skb around eth_type_trans()
1159                  * The main reason for this hack is for the limitation of
1160                  * Linux 2.4 where 'eth_type_trans' uses the
1161                  * 'net->hard_header_len'
1162                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
1163                  * coping of the packet coming from the network stack to add
1164                  * BDC, Hardware header etc, during network interface
1165                  * registration
1166                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
1167                  * required
1168                  * for BDC, Hardware header etc. and not just the ETH_HLEN
1169                  */
1170                 eth = skb->data;
1171                 len = skb->len;
1172
1173                 ifp = dhd->iflist[ifidx];
1174                 if (ifp == NULL)
1175                         ifp = dhd->iflist[0];
1176
1177                 ASSERT(ifp);
1178                 skb->dev = ifp->net;
1179                 skb->protocol = eth_type_trans(skb, skb->dev);
1180
1181                 if (skb->pkt_type == PACKET_MULTICAST)
1182                         dhd->pub.rx_multicast++;
1183
1184                 skb->data = eth;
1185                 skb->len = len;
1186
1187                 /* Strip header, count, deliver upward */
1188                 skb_pull(skb, ETH_HLEN);
1189
1190                 /* Process special event packets and then discard them */
1191                 if (ntoh16(skb->protocol) == ETHER_TYPE_BRCM)
1192                         dhd_wl_host_event(dhd, &ifidx,
1193                                           skb->mac_header,
1194                                           &event, &data);
1195
1196                 ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
1197                 if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state)
1198                         ifp = dhd->iflist[ifidx];
1199
1200                 if (ifp->net)
1201                         ifp->net->last_rx = jiffies;
1202
1203                 dhdp->dstats.rx_bytes += skb->len;
1204                 dhdp->rx_packets++;     /* Local count */
1205
1206                 if (in_interrupt()) {
1207                         netif_rx(skb);
1208                 } else {
1209                         /* If the receive is not processed inside an ISR,
1210                          * the softirqd must be woken explicitly to service
1211                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
1212                          * by netif_rx_ni(), but in earlier kernels, we need
1213                          * to do it manually.
1214                          */
1215                         netif_rx_ni(skb);
1216                 }
1217         }
1218 }
1219
1220 void dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
1221 {
1222         /* Linux version has nothing to do */
1223         return;
1224 }
1225
1226 void dhd_txcomplete(dhd_pub_t *dhdp, void *txp, bool success)
1227 {
1228         uint ifidx;
1229         dhd_info_t *dhd = (dhd_info_t *) (dhdp->info);
1230         struct ether_header *eh;
1231         u16 type;
1232
1233         dhd_prot_hdrpull(dhdp, &ifidx, txp);
1234
1235         eh = (struct ether_header *)PKTDATA(txp);
1236         type = ntoh16(eh->ether_type);
1237
1238         if (type == ETHER_TYPE_802_1X)
1239                 atomic_dec(&dhd->pend_8021x_cnt);
1240
1241 }
1242
1243 static struct net_device_stats *dhd_get_stats(struct net_device *net)
1244 {
1245         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1246         dhd_if_t *ifp;
1247         int ifidx;
1248
1249         DHD_TRACE(("%s: Enter\n", __func__));
1250
1251         ifidx = dhd_net2idx(dhd, net);
1252         if (ifidx == DHD_BAD_IF)
1253                 return NULL;
1254
1255         ifp = dhd->iflist[ifidx];
1256         ASSERT(dhd && ifp);
1257
1258         if (dhd->pub.up) {
1259                 /* Use the protocol to get dongle stats */
1260                 dhd_prot_dstats(&dhd->pub);
1261         }
1262
1263         /* Copy dongle stats to net device stats */
1264         ifp->stats.rx_packets = dhd->pub.dstats.rx_packets;
1265         ifp->stats.tx_packets = dhd->pub.dstats.tx_packets;
1266         ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes;
1267         ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes;
1268         ifp->stats.rx_errors = dhd->pub.dstats.rx_errors;
1269         ifp->stats.tx_errors = dhd->pub.dstats.tx_errors;
1270         ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped;
1271         ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped;
1272         ifp->stats.multicast = dhd->pub.dstats.multicast;
1273
1274         return &ifp->stats;
1275 }
1276
1277 static int dhd_watchdog_thread(void *data)
1278 {
1279         dhd_info_t *dhd = (dhd_info_t *) data;
1280         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_WATCHDOG, "dhd_watchdog_thread");
1281
1282         /* This thread doesn't need any user-level access,
1283          * so get rid of all our resources
1284          */
1285 #ifdef DHD_SCHED
1286         if (dhd_watchdog_prio > 0) {
1287                 struct sched_param param;
1288                 param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO) ?
1289                     dhd_watchdog_prio : (MAX_RT_PRIO - 1);
1290                 setScheduler(current, SCHED_FIFO, &param);
1291         }
1292 #endif                          /* DHD_SCHED */
1293
1294         allow_signal(SIGTERM);
1295         /* Run until signal received */
1296         while (1) {
1297                 if (kthread_should_stop())
1298                         break;
1299                 if (down_interruptible(&dhd->watchdog_sem) == 0) {
1300                         if (dhd->pub.dongle_reset == false) {
1301                                 WAKE_LOCK(&dhd->pub, WAKE_LOCK_WATCHDOG);
1302                                 /* Call the bus module watchdog */
1303                                 dhd_bus_watchdog(&dhd->pub);
1304                                 WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_WATCHDOG);
1305                         }
1306                         /* Count the tick for reference */
1307                         dhd->pub.tickcnt++;
1308                 } else
1309                         break;
1310         }
1311
1312         WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_WATCHDOG);
1313         return 0;
1314 }
1315
1316 static void dhd_watchdog(unsigned long data)
1317 {
1318         dhd_info_t *dhd = (dhd_info_t *) data;
1319
1320         if (dhd->watchdog_tsk) {
1321                 up(&dhd->watchdog_sem);
1322
1323                 /* Reschedule the watchdog */
1324                 if (dhd->wd_timer_valid) {
1325                         mod_timer(&dhd->timer,
1326                                   jiffies + dhd_watchdog_ms * HZ / 1000);
1327                 }
1328                 return;
1329         }
1330
1331         /* Call the bus module watchdog */
1332         dhd_bus_watchdog(&dhd->pub);
1333
1334         /* Count the tick for reference */
1335         dhd->pub.tickcnt++;
1336
1337         /* Reschedule the watchdog */
1338         if (dhd->wd_timer_valid)
1339                 mod_timer(&dhd->timer, jiffies + dhd_watchdog_ms * HZ / 1000);
1340 }
1341
1342 static int dhd_dpc_thread(void *data)
1343 {
1344         dhd_info_t *dhd = (dhd_info_t *) data;
1345
1346         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_DPC, "dhd_dpc_thread");
1347         /* This thread doesn't need any user-level access,
1348          * so get rid of all our resources
1349          */
1350 #ifdef DHD_SCHED
1351         if (dhd_dpc_prio > 0) {
1352                 struct sched_param param;
1353                 param.sched_priority =
1354                     (dhd_dpc_prio <
1355                      MAX_RT_PRIO) ? dhd_dpc_prio : (MAX_RT_PRIO - 1);
1356                 setScheduler(current, SCHED_FIFO, &param);
1357         }
1358 #endif                          /* DHD_SCHED */
1359
1360         allow_signal(SIGTERM);
1361         /* Run until signal received */
1362         while (1) {
1363                 if (kthread_should_stop())
1364                         break;
1365                 if (down_interruptible(&dhd->dpc_sem) == 0) {
1366                         /* Call bus dpc unless it indicated down
1367                                  (then clean stop) */
1368                         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1369                                 WAKE_LOCK(&dhd->pub, WAKE_LOCK_DPC);
1370                                 if (dhd_bus_dpc(dhd->pub.bus)) {
1371                                         up(&dhd->dpc_sem);
1372                                         WAKE_LOCK_TIMEOUT(&dhd->pub,
1373                                                           WAKE_LOCK_TMOUT, 25);
1374                                 }
1375                                 WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_DPC);
1376                         } else {
1377                                 dhd_bus_stop(dhd->pub.bus, true);
1378                         }
1379                 } else
1380                         break;
1381         }
1382
1383         WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_DPC);
1384         return 0;
1385 }
1386
1387 static void dhd_dpc(unsigned long data)
1388 {
1389         dhd_info_t *dhd;
1390
1391         dhd = (dhd_info_t *) data;
1392
1393         /* Call bus dpc unless it indicated down (then clean stop) */
1394         if (dhd->pub.busstate != DHD_BUS_DOWN) {
1395                 if (dhd_bus_dpc(dhd->pub.bus))
1396                         tasklet_schedule(&dhd->tasklet);
1397         } else {
1398                 dhd_bus_stop(dhd->pub.bus, true);
1399         }
1400 }
1401
1402 void dhd_sched_dpc(dhd_pub_t *dhdp)
1403 {
1404         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
1405
1406         if (dhd->dpc_tsk) {
1407                 up(&dhd->dpc_sem);
1408                 return;
1409         }
1410
1411         tasklet_schedule(&dhd->tasklet);
1412 }
1413
1414 #ifdef TOE
1415 /* Retrieve current toe component enables, which are kept
1416          as a bitmap in toe_ol iovar */
1417 static int dhd_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol)
1418 {
1419         wl_ioctl_t ioc;
1420         char buf[32];
1421         int ret;
1422
1423         memset(&ioc, 0, sizeof(ioc));
1424
1425         ioc.cmd = WLC_GET_VAR;
1426         ioc.buf = buf;
1427         ioc.len = (uint) sizeof(buf);
1428         ioc.set = false;
1429
1430         strcpy(buf, "toe_ol");
1431         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1432         if (ret < 0) {
1433                 /* Check for older dongle image that doesn't support toe_ol */
1434                 if (ret == -EIO) {
1435                         DHD_ERROR(("%s: toe not supported by device\n",
1436                                    dhd_ifname(&dhd->pub, ifidx)));
1437                         return -EOPNOTSUPP;
1438                 }
1439
1440                 DHD_INFO(("%s: could not get toe_ol: ret=%d\n",
1441                           dhd_ifname(&dhd->pub, ifidx), ret));
1442                 return ret;
1443         }
1444
1445         memcpy(toe_ol, buf, sizeof(u32));
1446         return 0;
1447 }
1448
1449 /* Set current toe component enables in toe_ol iovar,
1450          and set toe global enable iovar */
1451 static int dhd_toe_set(dhd_info_t *dhd, int ifidx, u32 toe_ol)
1452 {
1453         wl_ioctl_t ioc;
1454         char buf[32];
1455         int toe, ret;
1456
1457         memset(&ioc, 0, sizeof(ioc));
1458
1459         ioc.cmd = WLC_SET_VAR;
1460         ioc.buf = buf;
1461         ioc.len = (uint) sizeof(buf);
1462         ioc.set = true;
1463
1464         /* Set toe_ol as requested */
1465
1466         strcpy(buf, "toe_ol");
1467         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
1468
1469         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1470         if (ret < 0) {
1471                 DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
1472                            dhd_ifname(&dhd->pub, ifidx), ret));
1473                 return ret;
1474         }
1475
1476         /* Enable toe globally only if any components are enabled. */
1477
1478         toe = (toe_ol != 0);
1479
1480         strcpy(buf, "toe");
1481         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
1482
1483         ret = dhd_prot_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
1484         if (ret < 0) {
1485                 DHD_ERROR(("%s: could not set toe: ret=%d\n",
1486                            dhd_ifname(&dhd->pub, ifidx), ret));
1487                 return ret;
1488         }
1489
1490         return 0;
1491 }
1492 #endif                          /* TOE */
1493
1494 static void dhd_ethtool_get_drvinfo(struct net_device *net,
1495                                     struct ethtool_drvinfo *info)
1496 {
1497         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1498
1499         sprintf(info->driver, DRV_MODULE_NAME);
1500         sprintf(info->version, "%lu", dhd->pub.drv_version);
1501         sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname());
1502         sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev));
1503 }
1504
1505 struct ethtool_ops dhd_ethtool_ops = {
1506         .get_drvinfo = dhd_ethtool_get_drvinfo
1507 };
1508
1509 static int dhd_ethtool(dhd_info_t *dhd, void *uaddr)
1510 {
1511         struct ethtool_drvinfo info;
1512         char drvname[sizeof(info.driver)];
1513         u32 cmd;
1514 #ifdef TOE
1515         struct ethtool_value edata;
1516         u32 toe_cmpnt, csum_dir;
1517         int ret;
1518 #endif
1519
1520         DHD_TRACE(("%s: Enter\n", __func__));
1521
1522         /* all ethtool calls start with a cmd word */
1523         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
1524                 return -EFAULT;
1525
1526         switch (cmd) {
1527         case ETHTOOL_GDRVINFO:
1528                 /* Copy out any request driver name */
1529                 if (copy_from_user(&info, uaddr, sizeof(info)))
1530                         return -EFAULT;
1531                 strncpy(drvname, info.driver, sizeof(info.driver));
1532                 drvname[sizeof(info.driver) - 1] = '\0';
1533
1534                 /* clear struct for return */
1535                 memset(&info, 0, sizeof(info));
1536                 info.cmd = cmd;
1537
1538                 /* if dhd requested, identify ourselves */
1539                 if (strcmp(drvname, "?dhd") == 0) {
1540                         sprintf(info.driver, "dhd");
1541                         strcpy(info.version, EPI_VERSION_STR);
1542                 }
1543
1544                 /* otherwise, require dongle to be up */
1545                 else if (!dhd->pub.up) {
1546                         DHD_ERROR(("%s: dongle is not up\n", __func__));
1547                         return -ENODEV;
1548                 }
1549
1550                 /* finally, report dongle driver type */
1551                 else if (dhd->pub.iswl)
1552                         sprintf(info.driver, "wl");
1553                 else
1554                         sprintf(info.driver, "xx");
1555
1556                 sprintf(info.version, "%lu", dhd->pub.drv_version);
1557                 if (copy_to_user(uaddr, &info, sizeof(info)))
1558                         return -EFAULT;
1559                 DHD_CTL(("%s: given %*s, returning %s\n", __func__,
1560                          (int)sizeof(drvname), drvname, info.driver));
1561                 break;
1562
1563 #ifdef TOE
1564                 /* Get toe offload components from dongle */
1565         case ETHTOOL_GRXCSUM:
1566         case ETHTOOL_GTXCSUM:
1567                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1568                 if (ret < 0)
1569                         return ret;
1570
1571                 csum_dir =
1572                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1573
1574                 edata.cmd = cmd;
1575                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
1576
1577                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
1578                         return -EFAULT;
1579                 break;
1580
1581                 /* Set toe offload components in dongle */
1582         case ETHTOOL_SRXCSUM:
1583         case ETHTOOL_STXCSUM:
1584                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
1585                         return -EFAULT;
1586
1587                 /* Read the current settings, update and write back */
1588                 ret = dhd_toe_get(dhd, 0, &toe_cmpnt);
1589                 if (ret < 0)
1590                         return ret;
1591
1592                 csum_dir =
1593                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
1594
1595                 if (edata.data != 0)
1596                         toe_cmpnt |= csum_dir;
1597                 else
1598                         toe_cmpnt &= ~csum_dir;
1599
1600                 ret = dhd_toe_set(dhd, 0, toe_cmpnt);
1601                 if (ret < 0)
1602                         return ret;
1603
1604                 /* If setting TX checksum mode, tell Linux the new mode */
1605                 if (cmd == ETHTOOL_STXCSUM) {
1606                         if (edata.data)
1607                                 dhd->iflist[0]->net->features |=
1608                                     NETIF_F_IP_CSUM;
1609                         else
1610                                 dhd->iflist[0]->net->features &=
1611                                     ~NETIF_F_IP_CSUM;
1612                 }
1613
1614                 break;
1615 #endif                          /* TOE */
1616
1617         default:
1618                 return -EOPNOTSUPP;
1619         }
1620
1621         return 0;
1622 }
1623
1624 static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
1625 {
1626         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1627         dhd_ioctl_t ioc;
1628         int bcmerror = 0;
1629         int buflen = 0;
1630         void *buf = NULL;
1631         uint driver = 0;
1632         int ifidx;
1633         bool is_set_key_cmd;
1634
1635         ifidx = dhd_net2idx(dhd, net);
1636         DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd));
1637
1638         if (ifidx == DHD_BAD_IF)
1639                 return -1;
1640
1641 #if defined(CONFIG_WIRELESS_EXT)
1642         /* linux wireless extensions */
1643         if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
1644                 /* may recurse, do NOT lock */
1645                 return wl_iw_ioctl(net, ifr, cmd);
1646         }
1647 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
1648
1649         if (cmd == SIOCETHTOOL)
1650                 return dhd_ethtool(dhd, (void *)ifr->ifr_data);
1651
1652         if (cmd != SIOCDEVPRIVATE)
1653                 return -EOPNOTSUPP;
1654
1655         memset(&ioc, 0, sizeof(ioc));
1656
1657         /* Copy the ioc control structure part of ioctl request */
1658         if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
1659                 bcmerror = -BCME_BADADDR;
1660                 goto done;
1661         }
1662
1663         /* Copy out any buffer passed */
1664         if (ioc.buf) {
1665                 buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN);
1666                 /* optimization for direct ioctl calls from kernel */
1667                 /*
1668                    if (segment_eq(get_fs(), KERNEL_DS)) {
1669                    buf = ioc.buf;
1670                    } else {
1671                  */
1672                 {
1673                         buf = kmalloc(buflen, GFP_ATOMIC);
1674                         if (!buf) {
1675                                 bcmerror = -BCME_NOMEM;
1676                                 goto done;
1677                         }
1678                         if (copy_from_user(buf, ioc.buf, buflen)) {
1679                                 bcmerror = -BCME_BADADDR;
1680                                 goto done;
1681                         }
1682                 }
1683         }
1684
1685         /* To differentiate between wl and dhd read 4 more byes */
1686         if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
1687                             sizeof(uint)) != 0)) {
1688                 bcmerror = -BCME_BADADDR;
1689                 goto done;
1690         }
1691
1692         if (!capable(CAP_NET_ADMIN)) {
1693                 bcmerror = -BCME_EPERM;
1694                 goto done;
1695         }
1696
1697         /* check for local dhd ioctl and handle it */
1698         if (driver == DHD_IOCTL_MAGIC) {
1699                 bcmerror = dhd_ioctl((void *)&dhd->pub, &ioc, buf, buflen);
1700                 if (bcmerror)
1701                         dhd->pub.bcmerror = bcmerror;
1702                 goto done;
1703         }
1704
1705         /* send to dongle (must be up, and wl) */
1706         if ((dhd->pub.busstate != DHD_BUS_DATA)) {
1707                 DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__));
1708                 bcmerror = BCME_DONGLE_DOWN;
1709                 goto done;
1710         }
1711
1712         if (!dhd->pub.iswl) {
1713                 bcmerror = BCME_DONGLE_DOWN;
1714                 goto done;
1715         }
1716
1717         /* Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
1718          * prevent M4 encryption.
1719          */
1720         is_set_key_cmd = ((ioc.cmd == WLC_SET_KEY) ||
1721                           ((ioc.cmd == WLC_SET_VAR) &&
1722                            !(strncmp("wsec_key", ioc.buf, 9))) ||
1723                           ((ioc.cmd == WLC_SET_VAR) &&
1724                            !(strncmp("bsscfg:wsec_key", ioc.buf, 15))));
1725         if (is_set_key_cmd)
1726                 dhd_wait_pend8021x(net);
1727
1728         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_IOCTL, "dhd_ioctl_entry");
1729         WAKE_LOCK(&dhd->pub, WAKE_LOCK_IOCTL);
1730
1731         bcmerror =
1732             dhd_prot_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen);
1733
1734         WAKE_UNLOCK(&dhd->pub, WAKE_LOCK_IOCTL);
1735         WAKE_LOCK_DESTROY(&dhd->pub, WAKE_LOCK_IOCTL);
1736 done:
1737         if (!bcmerror && buf && ioc.buf) {
1738                 if (copy_to_user(ioc.buf, buf, buflen))
1739                         bcmerror = -EFAULT;
1740         }
1741
1742         if (buf)
1743                 kfree(buf);
1744
1745         return OSL_ERROR(bcmerror);
1746 }
1747
1748 static int dhd_stop(struct net_device *net)
1749 {
1750 #if !defined(IGNORE_ETH0_DOWN)
1751         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1752
1753         DHD_TRACE(("%s: Enter\n", __func__));
1754         if (IS_CFG80211_FAVORITE()) {
1755                 wl_cfg80211_down();
1756         }
1757         if (dhd->pub.up == 0)
1758                 return 0;
1759
1760         /* Set state and stop OS transmissions */
1761         dhd->pub.up = 0;
1762         netif_stop_queue(net);
1763 #else
1764         DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n",
1765                 __func__));
1766 #endif                          /* !defined(IGNORE_ETH0_DOWN) */
1767
1768         return 0;
1769 }
1770
1771 static int dhd_open(struct net_device *net)
1772 {
1773         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net);
1774 #ifdef TOE
1775         u32 toe_ol;
1776 #endif
1777         int ifidx = dhd_net2idx(dhd, net);
1778         s32 ret = 0;
1779
1780         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
1781
1782         if (ifidx == 0) {       /* do it only for primary eth0 */
1783
1784                 /* try to bring up bus */
1785                 ret = dhd_bus_start(&dhd->pub);
1786                 if (ret != 0) {
1787                         DHD_ERROR(("%s: failed with code %d\n", __func__, ret));
1788                         return -1;
1789                 }
1790                 atomic_set(&dhd->pend_8021x_cnt, 0);
1791
1792                 memcpy(net->dev_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);
1793
1794 #ifdef TOE
1795                 /* Get current TOE mode from dongle */
1796                 if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0
1797                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
1798                         dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
1799                 else
1800                         dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
1801 #endif
1802         }
1803         /* Allow transmit calls */
1804         netif_start_queue(net);
1805         dhd->pub.up = 1;
1806         if (IS_CFG80211_FAVORITE()) {
1807                 if (unlikely(wl_cfg80211_up())) {
1808                         DHD_ERROR(("%s: failed to bring up cfg80211\n",
1809                                    __func__));
1810                         return -1;
1811                 }
1812         }
1813
1814         return ret;
1815 }
1816
1817 osl_t *dhd_osl_attach(void *pdev, uint bustype)
1818 {
1819         return osl_attach(pdev, bustype, true);
1820 }
1821
1822 void dhd_osl_detach(osl_t *osh)
1823 {
1824         osl_detach(osh);
1825 }
1826
1827 int
1828 dhd_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name,
1829            u8 *mac_addr, u32 flags, u8 bssidx)
1830 {
1831         dhd_if_t *ifp;
1832
1833         DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle));
1834
1835         ASSERT(dhd && (ifidx < DHD_MAX_IFS));
1836
1837         ifp = dhd->iflist[ifidx];
1838         if (!ifp && !(ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC))) {
1839                 DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__));
1840                 return -ENOMEM;
1841         }
1842
1843         memset(ifp, 0, sizeof(dhd_if_t));
1844         ifp->info = dhd;
1845         dhd->iflist[ifidx] = ifp;
1846         strlcpy(ifp->name, name, IFNAMSIZ);
1847         if (mac_addr != NULL)
1848                 memcpy(&ifp->mac_addr, mac_addr, ETHER_ADDR_LEN);
1849
1850         if (handle == NULL) {
1851                 ifp->state = WLC_E_IF_ADD;
1852                 ifp->idx = ifidx;
1853                 ASSERT(dhd->sysioc_tsk);
1854                 up(&dhd->sysioc_sem);
1855         } else
1856                 ifp->net = (struct net_device *)handle;
1857
1858         return 0;
1859 }
1860
1861 void dhd_del_if(dhd_info_t *dhd, int ifidx)
1862 {
1863         dhd_if_t *ifp;
1864
1865         DHD_TRACE(("%s: idx %d\n", __func__, ifidx));
1866
1867         ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS));
1868         ifp = dhd->iflist[ifidx];
1869         if (!ifp) {
1870                 DHD_ERROR(("%s: Null interface\n", __func__));
1871                 return;
1872         }
1873
1874         ifp->state = WLC_E_IF_DEL;
1875         ifp->idx = ifidx;
1876         ASSERT(dhd->sysioc_tsk);
1877         up(&dhd->sysioc_sem);
1878 }
1879
1880 dhd_pub_t *dhd_attach(osl_t *osh, struct dhd_bus *bus, uint bus_hdrlen)
1881 {
1882         dhd_info_t *dhd = NULL;
1883         struct net_device *net;
1884
1885         DHD_TRACE(("%s: Enter\n", __func__));
1886         /* updates firmware nvram path if it was provided as module
1887                  paramters */
1888         if ((firmware_path != NULL) && (firmware_path[0] != '\0'))
1889                 strcpy(fw_path, firmware_path);
1890         if ((nvram_path != NULL) && (nvram_path[0] != '\0'))
1891                 strcpy(nv_path, nvram_path);
1892
1893         /* Allocate etherdev, including space for private structure */
1894         net = alloc_etherdev(sizeof(dhd));
1895         if (!net) {
1896                 DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__));
1897                 goto fail;
1898         }
1899
1900         /* Allocate primary dhd_info */
1901         dhd = kmalloc(sizeof(dhd_info_t), GFP_ATOMIC);
1902         if (!dhd) {
1903                 DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__));
1904                 goto fail;
1905         }
1906
1907         memset(dhd, 0, sizeof(dhd_info_t));
1908
1909         /*
1910          * Save the dhd_info into the priv
1911          */
1912         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
1913         dhd->pub.osh = osh;
1914
1915         /* Set network interface name if it was provided as module parameter */
1916         if (iface_name[0]) {
1917                 int len;
1918                 char ch;
1919                 strncpy(net->name, iface_name, IFNAMSIZ);
1920                 net->name[IFNAMSIZ - 1] = 0;
1921                 len = strlen(net->name);
1922                 ch = net->name[len - 1];
1923                 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1924                         strcat(net->name, "%d");
1925         }
1926
1927         if (dhd_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) ==
1928             DHD_BAD_IF)
1929                 goto fail;
1930
1931         net->netdev_ops = NULL;
1932         sema_init(&dhd->proto_sem, 1);
1933         /* Initialize other structure content */
1934         init_waitqueue_head(&dhd->ioctl_resp_wait);
1935         init_waitqueue_head(&dhd->ctrl_wait);
1936
1937         /* Initialize the spinlocks */
1938         spin_lock_init(&dhd->sdlock);
1939         spin_lock_init(&dhd->txqlock);
1940
1941         /* Link to info module */
1942         dhd->pub.info = dhd;
1943
1944         /* Link to bus module */
1945         dhd->pub.bus = bus;
1946         dhd->pub.hdrlen = bus_hdrlen;
1947
1948         /* Attach and link in the protocol */
1949         if (dhd_prot_attach(&dhd->pub) != 0) {
1950                 DHD_ERROR(("dhd_prot_attach failed\n"));
1951                 goto fail;
1952         }
1953 #if defined(CONFIG_WIRELESS_EXT)
1954         /* Attach and link in the iw */
1955         if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
1956                 DHD_ERROR(("wl_iw_attach failed\n"));
1957                 goto fail;
1958         }
1959 #endif  /* defined(CONFIG_WIRELESS_EXT) */
1960
1961         /* Attach and link in the cfg80211 */
1962         if (IS_CFG80211_FAVORITE()) {
1963                 if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
1964                         DHD_ERROR(("wl_cfg80211_attach failed\n"));
1965                         goto fail;
1966                 }
1967                 if (!NO_FW_REQ()) {
1968                         strcpy(fw_path, wl_cfg80211_get_fwname());
1969                         strcpy(nv_path, wl_cfg80211_get_nvramname());
1970                 }
1971                 wl_cfg80211_dbg_level(DBG_CFG80211_GET());
1972         }
1973
1974         /* Set up the watchdog timer */
1975         init_timer(&dhd->timer);
1976         dhd->timer.data = (unsigned long) dhd;
1977         dhd->timer.function = dhd_watchdog;
1978
1979         /* Initialize thread based operation and lock */
1980         sema_init(&dhd->sdsem, 1);
1981         if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0))
1982                 dhd->threads_only = true;
1983         else
1984                 dhd->threads_only = false;
1985
1986         if (dhd_dpc_prio >= 0) {
1987                 /* Initialize watchdog thread */
1988                 sema_init(&dhd->watchdog_sem, 0);
1989                 dhd->watchdog_tsk = kthread_run(dhd_watchdog_thread, dhd,
1990                                                 "dhd_watchdog");
1991                 if (IS_ERR(dhd->watchdog_tsk)) {
1992                         printk(KERN_WARNING
1993                                 "dhd_watchdog thread failed to start\n");
1994                         dhd->watchdog_tsk = NULL;
1995                 }
1996         } else {
1997                 dhd->watchdog_tsk = NULL;
1998         }
1999
2000         /* Set up the bottom half handler */
2001         if (dhd_dpc_prio >= 0) {
2002                 /* Initialize DPC thread */
2003                 sema_init(&dhd->dpc_sem, 0);
2004                 dhd->dpc_tsk = kthread_run(dhd_dpc_thread, dhd, "dhd_dpc");
2005                 if (IS_ERR(dhd->dpc_tsk)) {
2006                         printk(KERN_WARNING
2007                                 "dhd_dpc thread failed to start\n");
2008                         dhd->dpc_tsk = NULL;
2009                 }
2010         } else {
2011                 tasklet_init(&dhd->tasklet, dhd_dpc, (unsigned long) dhd);
2012                 dhd->dpc_tsk = NULL;
2013         }
2014
2015         if (dhd_sysioc) {
2016                 sema_init(&dhd->sysioc_sem, 0);
2017                 dhd->sysioc_tsk = kthread_run(_dhd_sysioc_thread, dhd,
2018                                                 "_dhd_sysioc");
2019                 if (IS_ERR(dhd->sysioc_tsk)) {
2020                         printk(KERN_WARNING
2021                                 "_dhd_sysioc thread failed to start\n");
2022                         dhd->sysioc_tsk = NULL;
2023                 }
2024         } else
2025                 dhd->sysioc_tsk = NULL;
2026
2027         /*
2028          * Save the dhd_info into the priv
2029          */
2030         memcpy(netdev_priv(net), &dhd, sizeof(dhd));
2031
2032 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2033         g_bus = bus;
2034 #endif
2035 #if defined(CONFIG_PM_SLEEP)
2036         register_pm_notifier(&dhd_sleep_pm_notifier);
2037 #endif  /* defined(CONFIG_PM_SLEEP) */
2038         /* && defined(DHD_GPL) */
2039         /* Init lock suspend to prevent kernel going to suspend */
2040         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_TMOUT, "dhd_wake_lock");
2041         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_LINK_DOWN_TMOUT,
2042                        "dhd_wake_lock_link_dw_event");
2043         WAKE_LOCK_INIT(&dhd->pub, WAKE_LOCK_PNO_FIND_TMOUT,
2044                        "dhd_wake_lock_link_pno_find_event");
2045 #ifdef CONFIG_HAS_EARLYSUSPEND
2046         dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
2047         dhd->early_suspend.suspend = dhd_early_suspend;
2048         dhd->early_suspend.resume = dhd_late_resume;
2049         register_early_suspend(&dhd->early_suspend);
2050 #endif
2051
2052         return &dhd->pub;
2053
2054 fail:
2055         if (net)
2056                 free_netdev(net);
2057         if (dhd)
2058                 dhd_detach(&dhd->pub);
2059
2060         return NULL;
2061 }
2062
2063 int dhd_bus_start(dhd_pub_t *dhdp)
2064 {
2065         int ret = -1;
2066         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2067 #ifdef EMBEDDED_PLATFORM
2068         char iovbuf[WL_EVENTING_MASK_LEN + 12]; /*  Room for "event_msgs" +
2069                                                  '\0' + bitvec  */
2070 #endif                          /* EMBEDDED_PLATFORM */
2071
2072         ASSERT(dhd);
2073
2074         DHD_TRACE(("%s:\n", __func__));
2075
2076         /* try to download image and nvram to the dongle */
2077         if (dhd->pub.busstate == DHD_BUS_DOWN) {
2078                 WAKE_LOCK_INIT(dhdp, WAKE_LOCK_DOWNLOAD, "dhd_bus_start");
2079                 WAKE_LOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2080                 if (!(dhd_bus_download_firmware(dhd->pub.bus, dhd->pub.osh,
2081                                                 fw_path, nv_path))) {
2082                         DHD_ERROR(("%s: dhdsdio_probe_download failed. "
2083                                 "firmware = %s nvram = %s\n",
2084                                 __func__, fw_path, nv_path));
2085                         WAKE_UNLOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2086                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_DOWNLOAD);
2087                         return -1;
2088                 }
2089
2090                 WAKE_UNLOCK(dhdp, WAKE_LOCK_DOWNLOAD);
2091                 WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_DOWNLOAD);
2092         }
2093
2094         /* Start the watchdog timer */
2095         dhd->pub.tickcnt = 0;
2096         dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2097
2098         /* Bring up the bus */
2099         ret = dhd_bus_init(&dhd->pub, true);
2100         if (ret != 0) {
2101                 DHD_ERROR(("%s, dhd_bus_init failed %d\n", __func__, ret));
2102                 return ret;
2103         }
2104 #if defined(OOB_INTR_ONLY)
2105         /* Host registration for OOB interrupt */
2106         if (bcmsdh_register_oob_intr(dhdp)) {
2107                 del_timer_sync(&dhd->timer);
2108                 dhd->wd_timer_valid = false;
2109                 DHD_ERROR(("%s Host failed to resgister for OOB\n", __func__));
2110                 return -ENODEV;
2111         }
2112
2113         /* Enable oob at firmware */
2114         dhd_enable_oob_intr(dhd->pub.bus, true);
2115 #endif                          /* defined(OOB_INTR_ONLY) */
2116
2117         /* If bus is not ready, can't come up */
2118         if (dhd->pub.busstate != DHD_BUS_DATA) {
2119                 del_timer_sync(&dhd->timer);
2120                 dhd->wd_timer_valid = false;
2121                 DHD_ERROR(("%s failed bus is not ready\n", __func__));
2122                 return -ENODEV;
2123         }
2124 #ifdef EMBEDDED_PLATFORM
2125         bcm_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf,
2126                     sizeof(iovbuf));
2127         dhdcdc_query_ioctl(dhdp, 0, WLC_GET_VAR, iovbuf, sizeof(iovbuf));
2128         bcopy(iovbuf, dhdp->eventmask, WL_EVENTING_MASK_LEN);
2129
2130         setbit(dhdp->eventmask, WLC_E_SET_SSID);
2131         setbit(dhdp->eventmask, WLC_E_PRUNE);
2132         setbit(dhdp->eventmask, WLC_E_AUTH);
2133         setbit(dhdp->eventmask, WLC_E_REASSOC);
2134         setbit(dhdp->eventmask, WLC_E_REASSOC_IND);
2135         setbit(dhdp->eventmask, WLC_E_DEAUTH_IND);
2136         setbit(dhdp->eventmask, WLC_E_DISASSOC_IND);
2137         setbit(dhdp->eventmask, WLC_E_DISASSOC);
2138         setbit(dhdp->eventmask, WLC_E_JOIN);
2139         setbit(dhdp->eventmask, WLC_E_ASSOC_IND);
2140         setbit(dhdp->eventmask, WLC_E_PSK_SUP);
2141         setbit(dhdp->eventmask, WLC_E_LINK);
2142         setbit(dhdp->eventmask, WLC_E_NDIS_LINK);
2143         setbit(dhdp->eventmask, WLC_E_MIC_ERROR);
2144         setbit(dhdp->eventmask, WLC_E_PMKID_CACHE);
2145         setbit(dhdp->eventmask, WLC_E_TXFAIL);
2146         setbit(dhdp->eventmask, WLC_E_JOIN_START);
2147         setbit(dhdp->eventmask, WLC_E_SCAN_COMPLETE);
2148 #ifdef PNO_SUPPORT
2149         setbit(dhdp->eventmask, WLC_E_PFN_NET_FOUND);
2150 #endif                          /* PNO_SUPPORT */
2151
2152 /* enable dongle roaming event */
2153
2154         dhdp->pktfilter_count = 1;
2155         /* Setup filter to allow only unicast */
2156         dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00";
2157 #endif                          /* EMBEDDED_PLATFORM */
2158
2159         /* Bus is ready, do any protocol initialization */
2160         ret = dhd_prot_init(&dhd->pub);
2161         if (ret < 0)
2162                 return ret;
2163
2164         return 0;
2165 }
2166
2167 int
2168 dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len,
2169           int set)
2170 {
2171         char buf[strlen(name) + 1 + cmd_len];
2172         int len = sizeof(buf);
2173         wl_ioctl_t ioc;
2174         int ret;
2175
2176         len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);
2177
2178         memset(&ioc, 0, sizeof(ioc));
2179
2180         ioc.cmd = set ? WLC_SET_VAR : WLC_GET_VAR;
2181         ioc.buf = buf;
2182         ioc.len = len;
2183         ioc.set = set;
2184
2185         ret = dhd_prot_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
2186         if (!set && ret >= 0)
2187                 memcpy(cmd_buf, buf, cmd_len);
2188
2189         return ret;
2190 }
2191
2192 static struct net_device_ops dhd_ops_pri = {
2193         .ndo_open = dhd_open,
2194         .ndo_stop = dhd_stop,
2195         .ndo_get_stats = dhd_get_stats,
2196         .ndo_do_ioctl = dhd_ioctl_entry,
2197         .ndo_start_xmit = dhd_start_xmit,
2198         .ndo_set_mac_address = dhd_set_mac_address,
2199         .ndo_set_multicast_list = dhd_set_multicast_list
2200 };
2201
2202 static struct net_device_ops dhd_ops_virt = {
2203         .ndo_get_stats = dhd_get_stats,
2204         .ndo_do_ioctl = dhd_ioctl_entry,
2205         .ndo_start_xmit = dhd_start_xmit,
2206         .ndo_set_mac_address = dhd_set_mac_address,
2207         .ndo_set_multicast_list = dhd_set_multicast_list
2208 };
2209
2210 int dhd_net_attach(dhd_pub_t *dhdp, int ifidx)
2211 {
2212         dhd_info_t *dhd = (dhd_info_t *) dhdp->info;
2213         struct net_device *net;
2214         u8 temp_addr[ETHER_ADDR_LEN] = {
2215                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
2216
2217         DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx));
2218
2219         ASSERT(dhd && dhd->iflist[ifidx]);
2220
2221         net = dhd->iflist[ifidx]->net;
2222         ASSERT(net);
2223
2224         ASSERT(!net->netdev_ops);
2225         net->netdev_ops = &dhd_ops_pri;
2226
2227         /*
2228          * We have to use the primary MAC for virtual interfaces
2229          */
2230         if (ifidx != 0) {
2231                 /* for virtual interfaces use the primary MAC  */
2232                 memcpy(temp_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);
2233
2234         }
2235
2236         if (ifidx == 1) {
2237                 DHD_TRACE(("%s ACCESS POINT MAC: \n", __func__));
2238                 /*  ACCESSPOINT INTERFACE CASE */
2239                 temp_addr[0] |= 0X02;   /* set bit 2 ,
2240                          - Locally Administered address  */
2241
2242         }
2243         net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
2244         net->ethtool_ops = &dhd_ethtool_ops;
2245
2246 #if defined(CONFIG_WIRELESS_EXT)
2247         if (!IS_CFG80211_FAVORITE()) {
2248 #if WIRELESS_EXT < 19
2249                 net->get_wireless_stats = dhd_get_wireless_stats;
2250 #endif                          /* WIRELESS_EXT < 19 */
2251 #if WIRELESS_EXT > 12
2252                 net->wireless_handlers =
2253                     (struct iw_handler_def *)&wl_iw_handler_def;
2254 #endif                          /* WIRELESS_EXT > 12 */
2255         }
2256 #endif                          /* defined(CONFIG_WIRELESS_EXT) */
2257
2258         dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen;
2259
2260         memcpy(net->dev_addr, temp_addr, ETHER_ADDR_LEN);
2261
2262         if (register_netdev(net) != 0) {
2263                 DHD_ERROR(("%s: couldn't register the net device\n",
2264                         __func__));
2265                 goto fail;
2266         }
2267
2268         printf("%s: Broadcom Dongle Host Driver\n", net->name);
2269
2270         return 0;
2271
2272 fail:
2273         net->netdev_ops = NULL;
2274         return BCME_ERROR;
2275 }
2276
2277 void dhd_bus_detach(dhd_pub_t *dhdp)
2278 {
2279         dhd_info_t *dhd;
2280
2281         DHD_TRACE(("%s: Enter\n", __func__));
2282
2283         if (dhdp) {
2284                 dhd = (dhd_info_t *) dhdp->info;
2285                 if (dhd) {
2286                         /* Stop the protocol module */
2287                         dhd_prot_stop(&dhd->pub);
2288
2289                         /* Stop the bus module */
2290                         dhd_bus_stop(dhd->pub.bus, true);
2291 #if defined(OOB_INTR_ONLY)
2292                         bcmsdh_unregister_oob_intr();
2293 #endif                          /* defined(OOB_INTR_ONLY) */
2294
2295                         /* Clear the watchdog timer */
2296                         del_timer_sync(&dhd->timer);
2297                         dhd->wd_timer_valid = false;
2298                 }
2299         }
2300 }
2301
2302 void dhd_detach(dhd_pub_t *dhdp)
2303 {
2304         dhd_info_t *dhd;
2305
2306         DHD_TRACE(("%s: Enter\n", __func__));
2307
2308         if (dhdp) {
2309                 dhd = (dhd_info_t *) dhdp->info;
2310                 if (dhd) {
2311                         dhd_if_t *ifp;
2312                         int i;
2313
2314 #if defined(CONFIG_HAS_EARLYSUSPEND)
2315                         if (dhd->early_suspend.suspend)
2316                                 unregister_early_suspend(&dhd->early_suspend);
2317 #endif                          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2318
2319                         for (i = 1; i < DHD_MAX_IFS; i++)
2320                                 if (dhd->iflist[i])
2321                                         dhd_del_if(dhd, i);
2322
2323                         ifp = dhd->iflist[0];
2324                         ASSERT(ifp);
2325                         if (ifp->net->netdev_ops == &dhd_ops_pri) {
2326                                 dhd_stop(ifp->net);
2327                                 unregister_netdev(ifp->net);
2328                         }
2329
2330                         if (dhd->watchdog_tsk) {
2331                                 send_sig(SIGTERM, dhd->watchdog_tsk, 1);
2332                                 kthread_stop(dhd->watchdog_tsk);
2333                                 dhd->watchdog_tsk = NULL;
2334                         }
2335
2336                         if (dhd->dpc_tsk) {
2337                                 send_sig(SIGTERM, dhd->dpc_tsk, 1);
2338                                 kthread_stop(dhd->dpc_tsk);
2339                                 dhd->dpc_tsk = NULL;
2340                         } else
2341                                 tasklet_kill(&dhd->tasklet);
2342
2343                         if (dhd->sysioc_tsk) {
2344                                 send_sig(SIGTERM, dhd->sysioc_tsk, 1);
2345                                 kthread_stop(dhd->sysioc_tsk);
2346                                 dhd->sysioc_tsk = NULL;
2347                         }
2348
2349                         dhd_bus_detach(dhdp);
2350
2351                         if (dhdp->prot)
2352                                 dhd_prot_detach(dhdp);
2353
2354 #if defined(CONFIG_WIRELESS_EXT)
2355                         wl_iw_detach();
2356 #endif                          /* (CONFIG_WIRELESS_EXT) */
2357
2358                         if (IS_CFG80211_FAVORITE())
2359                                 wl_cfg80211_detach();
2360
2361 #if defined(CONFIG_PM_SLEEP)
2362                         unregister_pm_notifier(&dhd_sleep_pm_notifier);
2363 #endif  /* defined(CONFIG_PM_SLEEP) */
2364                         /* && defined(DHD_GPL) */
2365                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_TMOUT);
2366                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_LINK_DOWN_TMOUT);
2367                         WAKE_LOCK_DESTROY(dhdp, WAKE_LOCK_PNO_FIND_TMOUT);
2368                         free_netdev(ifp->net);
2369                         kfree(ifp);
2370                         kfree(dhd);
2371                 }
2372         }
2373 }
2374
2375 static void __exit dhd_module_cleanup(void)
2376 {
2377         DHD_TRACE(("%s: Enter\n", __func__));
2378
2379         dhd_bus_unregister();
2380 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2381         wifi_del_dev();
2382 #endif
2383         /* Call customer gpio to turn off power with WL_REG_ON signal */
2384         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2385 }
2386
2387 static int __init dhd_module_init(void)
2388 {
2389         int error;
2390
2391         DHD_TRACE(("%s: Enter\n", __func__));
2392
2393         /* Sanity check on the module parameters */
2394         do {
2395                 /* Both watchdog and DPC as tasklets are ok */
2396                 if ((dhd_watchdog_prio < 0) && (dhd_dpc_prio < 0))
2397                         break;
2398
2399                 /* If both watchdog and DPC are threads, TX must be deferred */
2400                 if ((dhd_watchdog_prio >= 0) && (dhd_dpc_prio >= 0)
2401                     && dhd_deferred_tx)
2402                         break;
2403
2404                 DHD_ERROR(("Invalid module parameters.\n"));
2405                 return -EINVAL;
2406         } while (0);
2407         /* Call customer gpio to turn on power with WL_REG_ON signal */
2408         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_ON);
2409
2410 #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC)
2411         sema_init(&wifi_control_sem, 0);
2412
2413         error = wifi_add_dev();
2414         if (error) {
2415                 DHD_ERROR(("%s: platform_driver_register failed\n", __func__));
2416                 goto faild;
2417         }
2418
2419         /* Waiting callback after platform_driver_register is done or
2420                  exit with error */
2421         if (down_timeout(&wifi_control_sem, msecs_to_jiffies(1000)) != 0) {
2422                 printk(KERN_ERR "%s: platform_driver_register timeout\n",
2423                         __func__);
2424                 /* remove device */
2425                 wifi_del_dev();
2426                 goto faild;
2427         }
2428 #endif  /* #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) */
2429
2430         error = dhd_bus_register();
2431
2432         if (!error)
2433                 printf("\n%s\n", dhd_version);
2434         else {
2435                 DHD_ERROR(("%s: sdio_register_driver failed\n", __func__));
2436                 goto faild;
2437         }
2438         return error;
2439
2440 faild:
2441         /* turn off power and exit */
2442         dhd_customer_gpio_wlan_ctrl(WLAN_POWER_OFF);
2443         return -EINVAL;
2444 }
2445
2446 module_init(dhd_module_init);
2447 module_exit(dhd_module_cleanup);
2448
2449 /*
2450  * OS specific functions required to implement DHD driver in OS independent way
2451  */
2452 int dhd_os_proto_block(dhd_pub_t *pub)
2453 {
2454         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2455
2456         if (dhd) {
2457                 down(&dhd->proto_sem);
2458                 return 1;
2459         }
2460         return 0;
2461 }
2462
2463 int dhd_os_proto_unblock(dhd_pub_t *pub)
2464 {
2465         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2466
2467         if (dhd) {
2468                 up(&dhd->proto_sem);
2469                 return 1;
2470         }
2471
2472         return 0;
2473 }
2474
2475 unsigned int dhd_os_get_ioctl_resp_timeout(void)
2476 {
2477         return (unsigned int)dhd_ioctl_timeout_msec;
2478 }
2479
2480 void dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
2481 {
2482         dhd_ioctl_timeout_msec = (int)timeout_msec;
2483 }
2484
2485 int dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending)
2486 {
2487         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2488         DECLARE_WAITQUEUE(wait, current);
2489         int timeout = dhd_ioctl_timeout_msec;
2490
2491         /* Convert timeout in millsecond to jiffies */
2492         timeout = timeout * HZ / 1000;
2493
2494         /* Wait until control frame is available */
2495         add_wait_queue(&dhd->ioctl_resp_wait, &wait);
2496         set_current_state(TASK_INTERRUPTIBLE);
2497
2498         while (!(*condition) && (!signal_pending(current) && timeout))
2499                 timeout = schedule_timeout(timeout);
2500
2501         if (signal_pending(current))
2502                 *pending = true;
2503
2504         set_current_state(TASK_RUNNING);
2505         remove_wait_queue(&dhd->ioctl_resp_wait, &wait);
2506
2507         return timeout;
2508 }
2509
2510 int dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
2511 {
2512         dhd_info_t *dhd = (dhd_info_t *) (pub->info);
2513
2514         if (waitqueue_active(&dhd->ioctl_resp_wait))
2515                 wake_up_interruptible(&dhd->ioctl_resp_wait);
2516
2517         return 0;
2518 }
2519
2520 void dhd_os_wd_timer(void *bus, uint wdtick)
2521 {
2522         dhd_pub_t *pub = bus;
2523         static uint save_dhd_watchdog_ms;
2524         dhd_info_t *dhd = (dhd_info_t *) pub->info;
2525
2526         /* don't start the wd until fw is loaded */
2527         if (pub->busstate == DHD_BUS_DOWN)
2528                 return;
2529
2530         /* Totally stop the timer */
2531         if (!wdtick && dhd->wd_timer_valid == true) {
2532                 del_timer_sync(&dhd->timer);
2533                 dhd->wd_timer_valid = false;
2534                 save_dhd_watchdog_ms = wdtick;
2535                 return;
2536         }
2537
2538         if (wdtick) {
2539                 dhd_watchdog_ms = (uint) wdtick;
2540
2541                 if (save_dhd_watchdog_ms != dhd_watchdog_ms) {
2542
2543                         if (dhd->wd_timer_valid == true)
2544                                 /* Stop timer and restart at new value */
2545                                 del_timer_sync(&dhd->timer);
2546
2547                         /* Create timer again when watchdog period is
2548                            dynamically changed or in the first instance
2549                          */
2550                         dhd->timer.expires =
2551                             jiffies + dhd_watchdog_ms * HZ / 1000;
2552                         add_timer(&dhd->timer);
2553
2554                 } else {
2555                         /* Re arm the timer, at last watchdog period */
2556                         mod_timer(&dhd->timer,
2557                                   jiffies + dhd_watchdog_ms * HZ / 1000);
2558                 }
2559
2560                 dhd->wd_timer_valid = true;
2561                 save_dhd_watchdog_ms = wdtick;
2562         }
2563 }
2564
2565 void *dhd_os_open_image(char *filename)
2566 {
2567         struct file *fp;
2568
2569         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2570                 return wl_cfg80211_request_fw(filename);
2571
2572         fp = filp_open(filename, O_RDONLY, 0);
2573         /*
2574          * 2.6.11 (FC4) supports filp_open() but later revs don't?
2575          * Alternative:
2576          * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
2577          * ???
2578          */
2579         if (IS_ERR(fp))
2580                 fp = NULL;
2581
2582         return fp;
2583 }
2584
2585 int dhd_os_get_image_block(char *buf, int len, void *image)
2586 {
2587         struct file *fp = (struct file *)image;
2588         int rdlen;
2589
2590         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2591                 return wl_cfg80211_read_fw(buf, len);
2592
2593         if (!image)
2594                 return 0;
2595
2596         rdlen = kernel_read(fp, fp->f_pos, buf, len);
2597         if (rdlen > 0)
2598                 fp->f_pos += rdlen;
2599
2600         return rdlen;
2601 }
2602
2603 void dhd_os_close_image(void *image)
2604 {
2605         if (IS_CFG80211_FAVORITE() && !NO_FW_REQ())
2606                 return wl_cfg80211_release_fw();
2607         if (image)
2608                 filp_close((struct file *)image, NULL);
2609 }
2610
2611 void dhd_os_sdlock(dhd_pub_t *pub)
2612 {
2613         dhd_info_t *dhd;
2614
2615         dhd = (dhd_info_t *) (pub->info);
2616
2617         if (dhd->threads_only)
2618                 down(&dhd->sdsem);
2619         else
2620                 spin_lock_bh(&dhd->sdlock);
2621 }
2622
2623 void dhd_os_sdunlock(dhd_pub_t *pub)
2624 {
2625         dhd_info_t *dhd;
2626
2627         dhd = (dhd_info_t *) (pub->info);
2628
2629         if (dhd->threads_only)
2630                 up(&dhd->sdsem);
2631         else
2632                 spin_unlock_bh(&dhd->sdlock);
2633 }
2634
2635 void dhd_os_sdlock_txq(dhd_pub_t *pub)
2636 {
2637         dhd_info_t *dhd;
2638
2639         dhd = (dhd_info_t *) (pub->info);
2640         spin_lock_bh(&dhd->txqlock);
2641 }
2642
2643 void dhd_os_sdunlock_txq(dhd_pub_t *pub)
2644 {
2645         dhd_info_t *dhd;
2646
2647         dhd = (dhd_info_t *) (pub->info);
2648         spin_unlock_bh(&dhd->txqlock);
2649 }
2650
2651 void dhd_os_sdlock_rxq(dhd_pub_t *pub)
2652 {
2653 }
2654
2655 void dhd_os_sdunlock_rxq(dhd_pub_t *pub)
2656 {
2657 }
2658
2659 void dhd_os_sdtxlock(dhd_pub_t *pub)
2660 {
2661         dhd_os_sdlock(pub);
2662 }
2663
2664 void dhd_os_sdtxunlock(dhd_pub_t *pub)
2665 {
2666         dhd_os_sdunlock(pub);
2667 }
2668
2669 #if defined(CONFIG_WIRELESS_EXT)
2670 struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev)
2671 {
2672         int res = 0;
2673         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2674
2675         res = wl_iw_get_wireless_stats(dev, &dhd->iw.wstats);
2676
2677         if (res == 0)
2678                 return &dhd->iw.wstats;
2679         else
2680                 return NULL;
2681 }
2682 #endif  /* defined(CONFIG_WIRELESS_EXT) */
2683
2684 static int
2685 dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
2686                   wl_event_msg_t *event, void **data)
2687 {
2688         int bcmerror = 0;
2689
2690         ASSERT(dhd != NULL);
2691
2692         bcmerror = wl_host_event(dhd, ifidx, pktdata, event, data);
2693         if (bcmerror != BCME_OK)
2694                 return bcmerror;
2695
2696 #if defined(CONFIG_WIRELESS_EXT)
2697         if (!IS_CFG80211_FAVORITE()) {
2698                 if ((dhd->iflist[*ifidx] == NULL)
2699                     || (dhd->iflist[*ifidx]->net == NULL)) {
2700                         DHD_ERROR(("%s Exit null pointer\n", __func__));
2701                         return bcmerror;
2702                 }
2703
2704                 if (dhd->iflist[*ifidx]->net)
2705                         wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
2706         }
2707 #endif                          /* defined(CONFIG_WIRELESS_EXT)  */
2708
2709         if (IS_CFG80211_FAVORITE()) {
2710                 ASSERT(dhd->iflist[*ifidx] != NULL);
2711                 ASSERT(dhd->iflist[*ifidx]->net != NULL);
2712                 if (dhd->iflist[*ifidx]->net)
2713                         wl_cfg80211_event(dhd->iflist[*ifidx]->net, event,
2714                                           *data);
2715         }
2716
2717         return bcmerror;
2718 }
2719
2720 /* send up locally generated event */
2721 void dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
2722 {
2723         switch (ntoh32(event->event_type)) {
2724         default:
2725                 break;
2726         }
2727 }
2728
2729 void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
2730 {
2731         struct dhd_info *dhdinfo = dhd->info;
2732         dhd_os_sdunlock(dhd);
2733         wait_event_interruptible_timeout(dhdinfo->ctrl_wait,
2734                                          (*lockvar == false), HZ * 2);
2735         dhd_os_sdlock(dhd);
2736         return;
2737 }
2738
2739 void dhd_wait_event_wakeup(dhd_pub_t *dhd)
2740 {
2741         struct dhd_info *dhdinfo = dhd->info;
2742         if (waitqueue_active(&dhdinfo->ctrl_wait))
2743                 wake_up_interruptible(&dhdinfo->ctrl_wait);
2744         return;
2745 }
2746
2747 int dhd_dev_reset(struct net_device *dev, u8 flag)
2748 {
2749         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2750
2751         /* Turning off watchdog */
2752         if (flag)
2753                 dhd_os_wd_timer(&dhd->pub, 0);
2754
2755         dhd_bus_devreset(&dhd->pub, flag);
2756
2757         /* Turning on watchdog back */
2758         if (!flag)
2759                 dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
2760         DHD_ERROR(("%s:  WLAN OFF DONE\n", __func__));
2761
2762         return 1;
2763 }
2764
2765 int net_os_set_suspend_disable(struct net_device *dev, int val)
2766 {
2767         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2768         int ret = 0;
2769
2770         if (dhd) {
2771                 ret = dhd->pub.suspend_disable_flag;
2772                 dhd->pub.suspend_disable_flag = val;
2773         }
2774         return ret;
2775 }
2776
2777 int net_os_set_suspend(struct net_device *dev, int val)
2778 {
2779         int ret = 0;
2780 #if defined(CONFIG_HAS_EARLYSUSPEND)
2781         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2782
2783         if (dhd) {
2784                 dhd_os_proto_block(&dhd->pub);
2785                 ret = dhd_set_suspend(val, &dhd->pub);
2786                 dhd_os_proto_unblock(&dhd->pub);
2787         }
2788 #endif          /* defined(CONFIG_HAS_EARLYSUSPEND) */
2789         return ret;
2790 }
2791
2792 int net_os_set_dtim_skip(struct net_device *dev, int val)
2793 {
2794         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2795
2796         if (dhd)
2797                 dhd->pub.dtim_skip = val;
2798
2799         return 0;
2800 }
2801
2802 int net_os_set_packet_filter(struct net_device *dev, int val)
2803 {
2804         dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev);
2805         int ret = 0;
2806
2807         /* Packet filtering is set only if we still in early-suspend and
2808          * we need either to turn it ON or turn it OFF
2809          * We can always turn it OFF in case of early-suspend, but we turn it
2810          * back ON only if suspend_disable_flag was not set
2811          */
2812         if (dhd && dhd->pub.up) {
2813                 dhd_os_proto_block(&dhd->pub);
2814                 if (dhd->pub.in_suspend) {
2815                         if (!val || (val && !dhd->pub.suspend_disable_flag))
2816                                 dhd_set_packet_filter(val, &dhd->pub);
2817                 }
2818                 dhd_os_proto_unblock(&dhd->pub);
2819         }
2820         return ret;
2821 }
2822
2823 void dhd_dev_init_ioctl(struct net_device *dev)
2824 {
2825         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2826
2827         dhd_preinit_ioctls(&dhd->pub);
2828 }
2829
2830 #ifdef PNO_SUPPORT
2831 /* Linux wrapper to call common dhd_pno_clean */
2832 int dhd_dev_pno_reset(struct net_device *dev)
2833 {
2834         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2835
2836         return dhd_pno_clean(&dhd->pub);
2837 }
2838
2839 /* Linux wrapper to call common dhd_pno_enable */
2840 int dhd_dev_pno_enable(struct net_device *dev, int pfn_enabled)
2841 {
2842         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2843
2844         return dhd_pno_enable(&dhd->pub, pfn_enabled);
2845 }
2846
2847 /* Linux wrapper to call common dhd_pno_set */
2848 int
2849 dhd_dev_pno_set(struct net_device *dev, wlc_ssid_t *ssids_local, int nssid,
2850                 unsigned char scan_fr)
2851 {
2852         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2853
2854         return dhd_pno_set(&dhd->pub, ssids_local, nssid, scan_fr);
2855 }
2856
2857 /* Linux wrapper to get  pno status */
2858 int dhd_dev_get_pno_status(struct net_device *dev)
2859 {
2860         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2861
2862         return dhd_pno_get_status(&dhd->pub);
2863 }
2864
2865 #endif                          /* PNO_SUPPORT */
2866
2867 static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
2868 {
2869         return atomic_read(&dhd->pend_8021x_cnt);
2870 }
2871
2872 #define MAX_WAIT_FOR_8021X_TX   10
2873
2874 int dhd_wait_pend8021x(struct net_device *dev)
2875 {
2876         dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
2877         int timeout = 10 * HZ / 1000;
2878         int ntimes = MAX_WAIT_FOR_8021X_TX;
2879         int pend = dhd_get_pend_8021x_cnt(dhd);
2880
2881         while (ntimes && pend) {
2882                 if (pend) {
2883                         set_current_state(TASK_INTERRUPTIBLE);
2884                         schedule_timeout(timeout);
2885                         set_current_state(TASK_RUNNING);
2886                         ntimes--;
2887                 }
2888                 pend = dhd_get_pend_8021x_cnt(dhd);
2889         }
2890         return pend;
2891 }
2892
2893 #ifdef DHD_DEBUG
2894 int write_to_file(dhd_pub_t *dhd, u8 *buf, int size)
2895 {
2896         int ret = 0;
2897         struct file *fp;
2898         mm_segment_t old_fs;
2899         loff_t pos = 0;
2900
2901         /* change to KERNEL_DS address limit */
2902         old_fs = get_fs();
2903         set_fs(KERNEL_DS);
2904
2905         /* open file to write */
2906         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
2907         if (!fp) {
2908                 printf("%s: open file error\n", __func__);
2909                 ret = -1;
2910                 goto exit;
2911         }
2912
2913         /* Write buf to file */
2914         fp->f_op->write(fp, buf, size, &pos);
2915
2916 exit:
2917         /* free buf before return */
2918         kfree(buf);
2919         /* close file before return */
2920         if (fp)
2921                 filp_close(fp, current->files);
2922         /* restore previous address limit */
2923         set_fs(old_fs);
2924
2925         return ret;
2926 }
2927 #endif                          /* DHD_DEBUG */