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 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/kthread.h>
  20 #include <linux/slab.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/netdevice.h>
  23 #include <linux/etherdevice.h>
  24 #include <linux/mmc/sdio_func.h>
  25 #include <linux/random.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/ethtool.h>
  28 #include <linux/fcntl.h>
  29 #include <linux/fs.h>
  30 #include <linux/uaccess.h>
  31 #include <linux/hardirq.h>
  32 #include <linux/mutex.h>
  33 #include <linux/wait.h>
  34 #include <net/cfg80211.h>
  35 #include <defs.h>
  36 #include <brcmu_utils.h>
  37 #include <brcmu_wifi.h>
  38
  39 #include "dhd.h"
  40 #include "dhd_bus.h"
  41 #include "dhd_proto.h"
  42 #include "dhd_dbg.h"
  43 #include "wl_cfg80211.h"
  44 #include "bcmchip.h"
  45
  46 MODULE_AUTHOR("Broadcom Corporation");
  47 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
  48 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
  49 MODULE_LICENSE("Dual BSD/GPL");
  50
  51
  52 /* Interface control information */
  53 struct brcmf_if {
  54         struct brcmf_info *info;        /* back pointer to brcmf_info */
  55         /* OS/stack specifics */
  56         struct net_device *net;
  57         struct net_device_stats stats;
  58         int idx;                /* iface idx in dongle */
  59         int state;              /* interface state */
  60         uint subunit;           /* subunit */
  61         u8 mac_addr[ETH_ALEN];  /* assigned MAC address */
  62         bool attached;          /* Delayed attachment when unset */
  63         bool txflowcontrol;     /* Per interface flow control indicator */
  64         char name[IFNAMSIZ];    /* linux interface name */
  65 };
  66
  67 /* Local private structure (extension of pub) */
  68 struct brcmf_info {
  69         struct brcmf_pub pub;
  70
  71         /* OS/stack specifics */
  72         struct brcmf_if *iflist[BRCMF_MAX_IFS];
  73
  74         struct mutex proto_block;
  75
  76         /* Thread to issue ioctl for multicast */
  77         struct task_struct *sysioc_tsk;
  78         wait_queue_head_t sysioc_waitq;
  79         bool set_multicast;
  80         bool set_macaddress;
  81         u8 macvalue[ETH_ALEN];
  82         atomic_t pend_8021x_cnt;
  83 };
  84
  85 /* Error bits */
  86 module_param(brcmf_msg_level, int, 0);
  87
  88 /* Spawn a thread for system ioctls (set mac, set mcast) */
  89 uint brcmf_sysioc = true;
  90 module_param(brcmf_sysioc, uint, 0);
  91
  92 /* ARP offload agent mode : Enable ARP Host Auto-Reply
  93 and ARP Peer Auto-Reply */
  94 uint brcmf_arp_mode = 0xb;
  95 module_param(brcmf_arp_mode, uint, 0);
  96
  97 /* ARP offload enable */
  98 uint brcmf_arp_enable = true;
  99 module_param(brcmf_arp_enable, uint, 0);
 100
 101 /* Global Pkt filter enable control */
 102 uint brcmf_pkt_filter_enable = true;
 103 module_param(brcmf_pkt_filter_enable, uint, 0);
 104
 105 /*  Pkt filter init setup */
 106 uint brcmf_pkt_filter_init;
 107 module_param(brcmf_pkt_filter_init, uint, 0);
 108
 109 /* Pkt filter mode control */
 110 uint brcmf_master_mode = true;
 111 module_param(brcmf_master_mode, uint, 0);
 112
 113 /* Contorl fw roaming */
 114 uint brcmf_roam = 1;
 115
 116 /* Control radio state */
 117 uint brcmf_radio_up = 1;
 118
 119 /* Network inteface name */
 120 char iface_name[IFNAMSIZ] = "wlan";
 121 module_param_string(iface_name, iface_name, IFNAMSIZ, 0);
 122
 123 static int brcmf_net2idx(struct brcmf_info *drvr_priv, struct net_device *net)
 124 {
 125         int i = 0;
 126
 127         while (i < BRCMF_MAX_IFS) {
 128                 if (drvr_priv->iflist[i] && (drvr_priv->iflist[i]->net == net))
 129                         return i;
 130                 i++;
 131         }
 132
 133         return BRCMF_BAD_IF;
 134 }
 135
 136 int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name)
 137 {
 138         int i = BRCMF_MAX_IFS;
 139
 140         if (name == NULL || *name == '\0')
 141                 return 0;
 142
 143         while (--i > 0)
 144                 if (drvr_priv->iflist[i]
 145                     && !strncmp(drvr_priv->iflist[i]->name, name, IFNAMSIZ))
 146                         break;
 147
 148         brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
 149
 150         return i;               /* default - the primary interface */
 151 }
 152
 153 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
 154 {
 155         struct brcmf_info *drvr_priv = drvr->info;
 156
 157         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
 158                 brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
 159                 return "<if_bad>";
 160         }
 161
 162         if (drvr_priv->iflist[ifidx] == NULL) {
 163                 brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
 164                 return "<if_null>";
 165         }
 166
 167         if (drvr_priv->iflist[ifidx]->net)
 168                 return drvr_priv->iflist[ifidx]->net->name;
 169
 170         return "<if_none>";
 171 }
 172
 173 static void _brcmf_set_multicast_list(struct brcmf_info *drvr_priv, int ifidx)
 174 {
 175         struct net_device *dev;
 176         struct netdev_hw_addr *ha;
 177         u32 allmulti, cnt;
 178
 179         struct brcmf_ioctl ioc;
 180         char *buf, *bufp;
 181         uint buflen;
 182         int ret;
 183
 184         dev = drvr_priv->iflist[ifidx]->net;
 185         cnt = netdev_mc_count(dev);
 186
 187         /* Determine initial value of allmulti flag */
 188         allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
 189
 190         /* Send down the multicast list first. */
 191
 192         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
 193         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 194         if (!bufp) {
 195                 brcmf_dbg(ERROR, "%s: out of memory for mcast_list, cnt %d\n",
 196                           brcmf_ifname(&drvr_priv->pub, ifidx), cnt);
 197                 return;
 198         }
 199
 200         strcpy(bufp, "mcast_list");
 201         bufp += strlen("mcast_list") + 1;
 202
 203         cnt = cpu_to_le32(cnt);
 204         memcpy(bufp, &cnt, sizeof(cnt));
 205         bufp += sizeof(cnt);
 206
 207         netdev_for_each_mc_addr(ha, dev) {
 208                 if (!cnt)
 209                         break;
 210                 memcpy(bufp, ha->addr, ETH_ALEN);
 211                 bufp += ETH_ALEN;
 212                 cnt--;
 213         }
 214
 215         memset(&ioc, 0, sizeof(ioc));
 216         ioc.cmd = BRCMF_C_SET_VAR;
 217         ioc.buf = buf;
 218         ioc.len = buflen;
 219         ioc.set = true;
 220
 221         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.buf, ioc.len);
 222         if (ret < 0) {
 223                 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
 224                           brcmf_ifname(&drvr_priv->pub, ifidx), cnt);
 225                 allmulti = cnt ? true : allmulti;
 226         }
 227
 228         kfree(buf);
 229
 230         /* Now send the allmulti setting.  This is based on the setting in the
 231          * net_device flags, but might be modified above to be turned on if we
 232          * were trying to set some addresses and dongle rejected it...
 233          */
 234
 235         buflen = sizeof("allmulti") + sizeof(allmulti);
 236         buf = kmalloc(buflen, GFP_ATOMIC);
 237         if (!buf) {
 238                 brcmf_dbg(ERROR, "%s: out of memory for allmulti\n",
 239                           brcmf_ifname(&drvr_priv->pub, ifidx));
 240                 return;
 241         }
 242         allmulti = cpu_to_le32(allmulti);
 243
 244         if (!brcmu_mkiovar
 245             ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) {
 246                 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
 247                           brcmf_ifname(&drvr_priv->pub, ifidx),
 248                           (int)sizeof(allmulti), buflen);
 249                 kfree(buf);
 250                 return;
 251         }
 252
 253         memset(&ioc, 0, sizeof(ioc));
 254         ioc.cmd = BRCMF_C_SET_VAR;
 255         ioc.buf = buf;
 256         ioc.len = buflen;
 257         ioc.set = true;
 258
 259         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.buf, ioc.len);
 260         if (ret < 0) {
 261                 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
 262                           brcmf_ifname(&drvr_priv->pub, ifidx),
 263                           le32_to_cpu(allmulti));
 264         }
 265
 266         kfree(buf);
 267
 268         /* Finally, pick up the PROMISC flag as well, like the NIC
 269                  driver does */
 270
 271         allmulti = (dev->flags & IFF_PROMISC) ? true : false;
 272         allmulti = cpu_to_le32(allmulti);
 273
 274         memset(&ioc, 0, sizeof(ioc));
 275         ioc.cmd = BRCMF_C_SET_PROMISC;
 276         ioc.buf = &allmulti;
 277         ioc.len = sizeof(allmulti);
 278         ioc.set = true;
 279
 280         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.buf, ioc.len);
 281         if (ret < 0) {
 282                 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
 283                           brcmf_ifname(&drvr_priv->pub, ifidx),
 284                           le32_to_cpu(allmulti));
 285         }
 286 }
 287
 288 static int
 289 _brcmf_set_mac_address(struct brcmf_info *drvr_priv, int ifidx, u8 *addr)
 290 {
 291         char buf[32];
 292         struct brcmf_ioctl ioc;
 293         int ret;
 294
 295         brcmf_dbg(TRACE, "enter\n");
 296         if (!brcmu_mkiovar("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) {
 297                 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
 298                           brcmf_ifname(&drvr_priv->pub, ifidx));
 299                 return -1;
 300         }
 301         memset(&ioc, 0, sizeof(ioc));
 302         ioc.cmd = BRCMF_C_SET_VAR;
 303         ioc.buf = buf;
 304         ioc.len = 32;
 305         ioc.set = true;
 306
 307         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.buf, ioc.len);
 308         if (ret < 0)
 309                 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
 310                           brcmf_ifname(&drvr_priv->pub, ifidx));
 311         else
 312                 memcpy(drvr_priv->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN);
 313
 314         return ret;
 315 }
 316
 317 #ifdef SOFTAP
 318 static struct net_device *ap_net_dev;
 319 #endif
 320
 321 /* Virtual interfaces only ((ifp && ifp->info && ifp->idx == true) */
 322 static void brcmf_op_if(struct brcmf_if *ifp)
 323 {
 324         struct brcmf_info *drvr_priv;
 325         int ret = 0, err = 0;
 326
 327         drvr_priv = ifp->info;
 328
 329         brcmf_dbg(TRACE, "idx %d, state %d\n", ifp->idx, ifp->state);
 330
 331         switch (ifp->state) {
 332         case BRCMF_E_IF_ADD:
 333                 /*
 334                  * Delete the existing interface before overwriting it
 335                  * in case we missed the BRCMF_E_IF_DEL event.
 336                  */
 337                 if (ifp->net != NULL) {
 338                         brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
 339                                   ifp->net->name);
 340                         netif_stop_queue(ifp->net);
 341                         unregister_netdev(ifp->net);
 342                         free_netdev(ifp->net);
 343                 }
 344                 /* Allocate etherdev, including space for private structure */
 345                 ifp->net = alloc_etherdev(sizeof(drvr_priv));
 346                 if (!ifp->net) {
 347                         brcmf_dbg(ERROR, "OOM - alloc_etherdev\n");
 348                         ret = -ENOMEM;
 349                 }
 350                 if (ret == 0) {
 351                         strcpy(ifp->net->name, ifp->name);
 352                         memcpy(netdev_priv(ifp->net), &drvr_priv,
 353                                sizeof(drvr_priv));
 354                         err = brcmf_net_attach(&drvr_priv->pub, ifp->idx);
 355                         if (err != 0) {
 356                                 brcmf_dbg(ERROR, "brcmf_net_attach failed, err %d\n",
 357                                           err);
 358                                 ret = -EOPNOTSUPP;
 359                         } else {
 360 #ifdef SOFTAP
 361                                 /* semaphore that the soft AP CODE
 362                                          waits on */
 363                                 struct semaphore ap_eth_sema;
 364
 365                                 /* save ptr to wl0.1 netdev for use
 366                                          in wl_iw.c  */
 367                                 ap_net_dev = ifp->net;
 368                                 /* signal to the SOFTAP 'sleeper' thread,
 369                                          wl0.1 is ready */
 370                                 up(&ap_eth_sema);
 371 #endif
 372                                 brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
 373                                           current->pid, ifp->net->name);
 374                                 ifp->state = 0;
 375                         }
 376                 }
 377                 break;
 378         case BRCMF_E_IF_DEL:
 379                 if (ifp->net != NULL) {
 380                         brcmf_dbg(TRACE, "got 'WLC_E_IF_DEL' state\n");
 381                         netif_stop_queue(ifp->net);
 382                         unregister_netdev(ifp->net);
 383                         ret = BRCMF_DEL_IF;     /* Make sure the free_netdev()
 384                                                          is called */
 385                 }
 386                 break;
 387         default:
 388                 brcmf_dbg(ERROR, "bad op %d\n", ifp->state);
 389                 break;
 390         }
 391
 392         if (ret < 0) {
 393                 if (ifp->net)
 394                         free_netdev(ifp->net);
 395
 396                 drvr_priv->iflist[ifp->idx] = NULL;
 397                 kfree(ifp);
 398 #ifdef SOFTAP
 399                 if (ifp->net == ap_net_dev)
 400                         ap_net_dev = NULL;      /*  NULL  SOFTAP global
 401                                                          wl0.1 as well */
 402 #endif                          /*  SOFTAP */
 403         }
 404 }
 405
 406 static int _brcmf_sysioc_thread(void *data)
 407 {
 408         struct brcmf_info *drvr_priv = (struct brcmf_info *) data;
 409         int i;
 410 #ifdef SOFTAP
 411         bool in_ap = false;
 412 #endif
 413         DECLARE_WAITQUEUE(wait, current);
 414         allow_signal(SIGTERM);
 415
 416         add_wait_queue(&drvr_priv->sysioc_waitq, &wait);
 417         while (1) {
 418                 prepare_to_wait(&drvr_priv->sysioc_waitq, &wait,
 419                                 TASK_INTERRUPTIBLE);
 420
 421                 /* wait for event */
 422                 schedule();
 423
 424                 if (kthread_should_stop())
 425                         break;
 426
 427                 for (i = 0; i < BRCMF_MAX_IFS; i++) {
 428                         struct brcmf_if *ifentry = drvr_priv->iflist[i];
 429                         if (ifentry) {
 430 #ifdef SOFTAP
 431                                 in_ap = (ap_net_dev != NULL);
 432 #endif                          /* SOFTAP */
 433                                 if (ifentry->state)
 434                                         brcmf_op_if(ifentry);
 435 #ifdef SOFTAP
 436                                 if (drvr_priv->iflist[i] == NULL) {
 437                                         brcmf_dbg(TRACE, "interface %d removed!\n",
 438                                                   i);
 439                                         continue;
 440                                 }
 441
 442                                 if (in_ap && drvr_priv->set_macaddress) {
 443                                         brcmf_dbg(TRACE, "attempt to set MAC for %s in AP Mode, blocked.\n",
 444                                                   ifentry->net->name);
 445                                         drvr_priv->set_macaddress = false;
 446                                         continue;
 447                                 }
 448
 449                                 if (in_ap && drvr_priv->set_multicast) {
 450                                         brcmf_dbg(TRACE, "attempt to set MULTICAST list for %s in AP Mode, blocked.\n",
 451                                                   ifentry->net->name);
 452                                         drvr_priv->set_multicast = false;
 453                                         continue;
 454                                 }
 455 #endif                          /* SOFTAP */
 456                                 if (drvr_priv->set_multicast) {
 457                                         drvr_priv->set_multicast = false;
 458                                         _brcmf_set_multicast_list(drvr_priv, i);
 459                                 }
 460                                 if (drvr_priv->set_macaddress) {
 461                                         drvr_priv->set_macaddress = false;
 462                                         _brcmf_set_mac_address(drvr_priv, i,
 463                                                 drvr_priv->macvalue);
 464                                 }
 465                         }
 466                 }
 467         }
 468         finish_wait(&drvr_priv->sysioc_waitq, &wait);
 469         return 0;
 470 }
 471
 472 static int brcmf_netdev_set_mac_address(struct net_device *dev, void *addr)
 473 {
 474         int ret = 0;
 475
 476         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(dev);
 477         struct sockaddr *sa = (struct sockaddr *)addr;
 478         int ifidx;
 479
 480         ifidx = brcmf_net2idx(drvr_priv, dev);
 481         if (ifidx == BRCMF_BAD_IF)
 482                 return -1;
 483
 484         memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN);
 485         drvr_priv->set_macaddress = true;
 486         wake_up(&drvr_priv->sysioc_waitq);
 487         return ret;
 488 }
 489
 490 static void brcmf_netdev_set_multicast_list(struct net_device *dev)
 491 {
 492         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(dev);
 493         int ifidx;
 494
 495         ifidx = brcmf_net2idx(drvr_priv, dev);
 496         if (ifidx == BRCMF_BAD_IF)
 497                 return;
 498
 499         drvr_priv->set_multicast = true;
 500         wake_up(&drvr_priv->sysioc_waitq);
 501 }
 502
 503 int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
 504 {
 505         struct brcmf_info *drvr_priv = drvr->info;
 506
 507         /* Reject if down */
 508         if (!drvr->up || (drvr->busstate == BRCMF_BUS_DOWN))
 509                 return -ENODEV;
 510
 511         /* Update multicast statistic */
 512         if (pktbuf->len >= ETH_ALEN) {
 513                 u8 *pktdata = (u8 *) (pktbuf->data);
 514                 struct ethhdr *eh = (struct ethhdr *)pktdata;
 515
 516                 if (is_multicast_ether_addr(eh->h_dest))
 517                         drvr->tx_multicast++;
 518                 if (ntohs(eh->h_proto) == ETH_P_PAE)
 519                         atomic_inc(&drvr_priv->pend_8021x_cnt);
 520         }
 521
 522         /* If the protocol uses a data header, apply it */
 523         brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
 524
 525         /* Use bus module to send data frame */
 526         return brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf);
 527 }
 528
 529 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *net)
 530 {
 531         int ret;
 532         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 533         int ifidx;
 534
 535         brcmf_dbg(TRACE, "Enter\n");
 536
 537         /* Reject if down */
 538         if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) {
 539                 brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n",
 540                           drvr_priv->pub.up, drvr_priv->pub.busstate);
 541                 netif_stop_queue(net);
 542                 return -ENODEV;
 543         }
 544
 545         ifidx = brcmf_net2idx(drvr_priv, net);
 546         if (ifidx == BRCMF_BAD_IF) {
 547                 brcmf_dbg(ERROR, "bad ifidx %d\n", ifidx);
 548                 netif_stop_queue(net);
 549                 return -ENODEV;
 550         }
 551
 552         /* Make sure there's enough room for any header */
 553         if (skb_headroom(skb) < drvr_priv->pub.hdrlen) {
 554                 struct sk_buff *skb2;
 555
 556                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 557                           brcmf_ifname(&drvr_priv->pub, ifidx));
 558                 drvr_priv->pub.tx_realloc++;
 559                 skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen);
 560                 dev_kfree_skb(skb);
 561                 skb = skb2;
 562                 if (skb == NULL) {
 563                         brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
 564                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 565                         ret = -ENOMEM;
 566                         goto done;
 567                 }
 568         }
 569
 570         ret = brcmf_sendpkt(&drvr_priv->pub, ifidx, skb);
 571
 572 done:
 573         if (ret)
 574                 drvr_priv->pub.dstats.tx_dropped++;
 575         else
 576                 drvr_priv->pub.tx_packets++;
 577
 578         /* Return ok: we always eat the packet */
 579         return 0;
 580 }
 581
 582 void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state)
 583 {
 584         struct net_device *net;
 585         struct brcmf_info *drvr_priv = drvr->info;
 586
 587         brcmf_dbg(TRACE, "Enter\n");
 588
 589         drvr->txoff = state;
 590         net = drvr_priv->iflist[ifidx]->net;
 591         if (state == ON)
 592                 netif_stop_queue(net);
 593         else
 594                 netif_wake_queue(net);
 595 }
 596
 597 static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx,
 598                             void *pktdata, struct brcmf_event_msg *event,
 599                             void **data)
 600 {
 601         int bcmerror = 0;
 602
 603         bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data);
 604         if (bcmerror != 0)
 605                 return bcmerror;
 606
 607         if (drvr_priv->iflist[*ifidx]->net)
 608                 brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->net,
 609                                      event, *data);
 610
 611         return bcmerror;
 612 }
 613
 614 void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb,
 615                   int numpkt)
 616 {
 617         struct brcmf_info *drvr_priv = drvr->info;
 618         unsigned char *eth;
 619         uint len;
 620         void *data;
 621         struct sk_buff *pnext, *save_pktbuf;
 622         int i;
 623         struct brcmf_if *ifp;
 624         struct brcmf_event_msg event;
 625
 626         brcmf_dbg(TRACE, "Enter\n");
 627
 628         save_pktbuf = skb;
 629
 630         for (i = 0; skb && i < numpkt; i++, skb = pnext) {
 631
 632                 pnext = skb->next;
 633                 skb->next = NULL;
 634
 635                 /* Get the protocol, maintain skb around eth_type_trans()
 636                  * The main reason for this hack is for the limitation of
 637                  * Linux 2.4 where 'eth_type_trans' uses the
 638                  * 'net->hard_header_len'
 639                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 640                  * coping of the packet coming from the network stack to add
 641                  * BDC, Hardware header etc, during network interface
 642                  * registration
 643                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 644                  * required
 645                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 646                  */
 647                 eth = skb->data;
 648                 len = skb->len;
 649
 650                 ifp = drvr_priv->iflist[ifidx];
 651                 if (ifp == NULL)
 652                         ifp = drvr_priv->iflist[0];
 653
 654                 skb->dev = ifp->net;
 655                 skb->protocol = eth_type_trans(skb, skb->dev);
 656
 657                 if (skb->pkt_type == PACKET_MULTICAST)
 658                         drvr_priv->pub.rx_multicast++;
 659
 660                 skb->data = eth;
 661                 skb->len = len;
 662
 663                 /* Strip header, count, deliver upward */
 664                 skb_pull(skb, ETH_HLEN);
 665
 666                 /* Process special event packets and then discard them */
 667                 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
 668                         brcmf_host_event(drvr_priv, &ifidx,
 669                                           skb_mac_header(skb),
 670                                           &event, &data);
 671
 672                 if (drvr_priv->iflist[ifidx] &&
 673                     !drvr_priv->iflist[ifidx]->state)
 674                         ifp = drvr_priv->iflist[ifidx];
 675
 676                 if (ifp->net)
 677                         ifp->net->last_rx = jiffies;
 678
 679                 drvr->dstats.rx_bytes += skb->len;
 680                 drvr->rx_packets++;     /* Local count */
 681
 682                 if (in_interrupt())
 683                         netif_rx(skb);
 684                 else
 685                         /* If the receive is not processed inside an ISR,
 686                          * the softirqd must be woken explicitly to service
 687                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 688                          * by netif_rx_ni(), but in earlier kernels, we need
 689                          * to do it manually.
 690                          */
 691                         netif_rx_ni(skb);
 692         }
 693 }
 694
 695 void brcmf_txcomplete(struct brcmf_pub *drvr, struct sk_buff *txp, bool success)
 696 {
 697         uint ifidx;
 698         struct brcmf_info *drvr_priv = drvr->info;
 699         struct ethhdr *eh;
 700         u16 type;
 701
 702         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 703
 704         eh = (struct ethhdr *)(txp->data);
 705         type = ntohs(eh->h_proto);
 706
 707         if (type == ETH_P_PAE)
 708                 atomic_dec(&drvr_priv->pend_8021x_cnt);
 709
 710 }
 711
 712 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *net)
 713 {
 714         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 715         struct brcmf_if *ifp;
 716         int ifidx;
 717
 718         brcmf_dbg(TRACE, "Enter\n");
 719
 720         ifidx = brcmf_net2idx(drvr_priv, net);
 721         if (ifidx == BRCMF_BAD_IF)
 722                 return NULL;
 723
 724         ifp = drvr_priv->iflist[ifidx];
 725
 726         if (drvr_priv->pub.up)
 727                 /* Use the protocol to get dongle stats */
 728                 brcmf_proto_dstats(&drvr_priv->pub);
 729
 730         /* Copy dongle stats to net device stats */
 731         ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets;
 732         ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets;
 733         ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes;
 734         ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes;
 735         ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors;
 736         ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors;
 737         ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped;
 738         ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped;
 739         ifp->stats.multicast = drvr_priv->pub.dstats.multicast;
 740
 741         return &ifp->stats;
 742 }
 743
 744 /* Retrieve current toe component enables, which are kept
 745          as a bitmap in toe_ol iovar */
 746 static int brcmf_toe_get(struct brcmf_info *drvr_priv, int ifidx, u32 *toe_ol)
 747 {
 748         struct brcmf_ioctl ioc;
 749         char buf[32];
 750         int ret;
 751
 752         memset(&ioc, 0, sizeof(ioc));
 753
 754         ioc.cmd = BRCMF_C_GET_VAR;
 755         ioc.buf = buf;
 756         ioc.len = (uint) sizeof(buf);
 757         ioc.set = false;
 758
 759         strcpy(buf, "toe_ol");
 760         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.buf, ioc.len);
 761         if (ret < 0) {
 762                 /* Check for older dongle image that doesn't support toe_ol */
 763                 if (ret == -EIO) {
 764                         brcmf_dbg(ERROR, "%s: toe not supported by device\n",
 765                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 766                         return -EOPNOTSUPP;
 767                 }
 768
 769                 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
 770                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 771                 return ret;
 772         }
 773
 774         memcpy(toe_ol, buf, sizeof(u32));
 775         return 0;
 776 }
 777
 778 /* Set current toe component enables in toe_ol iovar,
 779          and set toe global enable iovar */
 780 static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol)
 781 {
 782         struct brcmf_ioctl ioc;
 783         char buf[32];
 784         int toe, ret;
 785
 786         memset(&ioc, 0, sizeof(ioc));
 787
 788         ioc.cmd = BRCMF_C_SET_VAR;
 789         ioc.buf = buf;
 790         ioc.len = (uint) sizeof(buf);
 791         ioc.set = true;
 792
 793         /* Set toe_ol as requested */
 794
 795         strcpy(buf, "toe_ol");
 796         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
 797
 798         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.buf, ioc.len);
 799         if (ret < 0) {
 800                 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
 801                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 802                 return ret;
 803         }
 804
 805         /* Enable toe globally only if any components are enabled. */
 806
 807         toe = (toe_ol != 0);
 808
 809         strcpy(buf, "toe");
 810         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
 811
 812         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.buf, ioc.len);
 813         if (ret < 0) {
 814                 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
 815                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 816                 return ret;
 817         }
 818
 819         return 0;
 820 }
 821
 822 static void brcmf_ethtool_get_drvinfo(struct net_device *net,
 823                                     struct ethtool_drvinfo *info)
 824 {
 825         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 826
 827         sprintf(info->driver, KBUILD_MODNAME);
 828         sprintf(info->version, "%lu", drvr_priv->pub.drv_version);
 829         sprintf(info->fw_version, "%s", BCM4329_FW_NAME);
 830         sprintf(info->bus_info, "%s",
 831                 dev_name(brcmf_bus_get_device(drvr_priv->pub.bus)));
 832 }
 833
 834 static struct ethtool_ops brcmf_ethtool_ops = {
 835         .get_drvinfo = brcmf_ethtool_get_drvinfo
 836 };
 837
 838 static int brcmf_ethtool(struct brcmf_info *drvr_priv, void __user *uaddr)
 839 {
 840         struct ethtool_drvinfo info;
 841         char drvname[sizeof(info.driver)];
 842         u32 cmd;
 843         struct ethtool_value edata;
 844         u32 toe_cmpnt, csum_dir;
 845         int ret;
 846
 847         brcmf_dbg(TRACE, "Enter\n");
 848
 849         /* all ethtool calls start with a cmd word */
 850         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 851                 return -EFAULT;
 852
 853         switch (cmd) {
 854         case ETHTOOL_GDRVINFO:
 855                 /* Copy out any request driver name */
 856                 if (copy_from_user(&info, uaddr, sizeof(info)))
 857                         return -EFAULT;
 858                 strncpy(drvname, info.driver, sizeof(info.driver));
 859                 drvname[sizeof(info.driver) - 1] = '\0';
 860
 861                 /* clear struct for return */
 862                 memset(&info, 0, sizeof(info));
 863                 info.cmd = cmd;
 864
 865                 /* if requested, identify ourselves */
 866                 if (strcmp(drvname, "?dhd") == 0) {
 867                         sprintf(info.driver, "dhd");
 868                         strcpy(info.version, BRCMF_VERSION_STR);
 869                 }
 870
 871                 /* otherwise, require dongle to be up */
 872                 else if (!drvr_priv->pub.up) {
 873                         brcmf_dbg(ERROR, "dongle is not up\n");
 874                         return -ENODEV;
 875                 }
 876
 877                 /* finally, report dongle driver type */
 878                 else if (drvr_priv->pub.iswl)
 879                         sprintf(info.driver, "wl");
 880                 else
 881                         sprintf(info.driver, "xx");
 882
 883                 sprintf(info.version, "%lu", drvr_priv->pub.drv_version);
 884                 if (copy_to_user(uaddr, &info, sizeof(info)))
 885                         return -EFAULT;
 886                 brcmf_dbg(CTL, "given %*s, returning %s\n",
 887                           (int)sizeof(drvname), drvname, info.driver);
 888                 break;
 889
 890                 /* Get toe offload components from dongle */
 891         case ETHTOOL_GRXCSUM:
 892         case ETHTOOL_GTXCSUM:
 893                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 894                 if (ret < 0)
 895                         return ret;
 896
 897                 csum_dir =
 898                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 899
 900                 edata.cmd = cmd;
 901                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 902
 903                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 904                         return -EFAULT;
 905                 break;
 906
 907                 /* Set toe offload components in dongle */
 908         case ETHTOOL_SRXCSUM:
 909         case ETHTOOL_STXCSUM:
 910                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 911                         return -EFAULT;
 912
 913                 /* Read the current settings, update and write back */
 914                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 915                 if (ret < 0)
 916                         return ret;
 917
 918                 csum_dir =
 919                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 920
 921                 if (edata.data != 0)
 922                         toe_cmpnt |= csum_dir;
 923                 else
 924                         toe_cmpnt &= ~csum_dir;
 925
 926                 ret = brcmf_toe_set(drvr_priv, 0, toe_cmpnt);
 927                 if (ret < 0)
 928                         return ret;
 929
 930                 /* If setting TX checksum mode, tell Linux the new mode */
 931                 if (cmd == ETHTOOL_STXCSUM) {
 932                         if (edata.data)
 933                                 drvr_priv->iflist[0]->net->features |=
 934                                     NETIF_F_IP_CSUM;
 935                         else
 936                                 drvr_priv->iflist[0]->net->features &=
 937                                     ~NETIF_F_IP_CSUM;
 938                 }
 939
 940                 break;
 941
 942         default:
 943                 return -EOPNOTSUPP;
 944         }
 945
 946         return 0;
 947 }
 948
 949 static int brcmf_netdev_ioctl_entry(struct net_device *net, struct ifreq *ifr,
 950                                     int cmd)
 951 {
 952         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 953         int ifidx;
 954
 955         ifidx = brcmf_net2idx(drvr_priv, net);
 956         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifidx, cmd);
 957
 958         if (ifidx == BRCMF_BAD_IF)
 959                 return -1;
 960
 961         if (cmd == SIOCETHTOOL)
 962                 return brcmf_ethtool(drvr_priv, ifr->ifr_data);
 963
 964         return -EOPNOTSUPP;
 965 }
 966
 967 /* called only from within this driver */
 968 int brcmf_netdev_ioctl_priv(struct net_device *net, struct brcmf_ioctl *ioc)
 969 {
 970         int bcmerror = 0;
 971         int buflen = 0;
 972         bool is_set_key_cmd;
 973         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 974         int ifidx;
 975
 976         ifidx = brcmf_net2idx(drvr_priv, net);
 977
 978         if (ioc->buf != NULL)
 979                 buflen = min_t(uint, ioc->len, BRCMF_IOCTL_MAXLEN);
 980
 981         /* send to dongle (must be up, and wl) */
 982         if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) {
 983                 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
 984                 bcmerror = -EIO;
 985                 goto done;
 986         }
 987
 988         if (!drvr_priv->pub.iswl) {
 989                 bcmerror = -EIO;
 990                 goto done;
 991         }
 992
 993         /*
 994          * Intercept BRCMF_C_SET_KEY IOCTL - serialize M4 send and
 995          * set key IOCTL to prevent M4 encryption.
 996          */
 997         is_set_key_cmd = ((ioc->cmd == BRCMF_C_SET_KEY) ||
 998                           ((ioc->cmd == BRCMF_C_SET_VAR) &&
 999                            !(strncmp("wsec_key", ioc->buf, 9))) ||
1000                           ((ioc->cmd == BRCMF_C_SET_VAR) &&
1001                            !(strncmp("bsscfg:wsec_key", ioc->buf, 15))));
1002         if (is_set_key_cmd)
1003                 brcmf_netdev_wait_pend8021x(net);
1004
1005         bcmerror = brcmf_proto_ioctl(&drvr_priv->pub, ifidx,
1006                                      ioc, ioc->buf, buflen);
1007
1008 done:
1009         if (bcmerror > 0)
1010                 bcmerror = 0;
1011
1012         return bcmerror;
1013 }
1014
1015 static int brcmf_netdev_stop(struct net_device *net)
1016 {
1017         struct brcmf_pub *drvr = *(struct brcmf_pub **) netdev_priv(net);
1018
1019         brcmf_dbg(TRACE, "Enter\n");
1020         brcmf_cfg80211_down(drvr->config);
1021         if (drvr->up == 0)
1022                 return 0;
1023
1024         /* Set state and stop OS transmissions */
1025         drvr->up = 0;
1026         netif_stop_queue(net);
1027
1028         return 0;
1029 }
1030
1031 static int brcmf_netdev_open(struct net_device *net)
1032 {
1033         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
1034         u32 toe_ol;
1035         int ifidx = brcmf_net2idx(drvr_priv, net);
1036         s32 ret = 0;
1037
1038         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1039
1040         if (ifidx == 0) {       /* do it only for primary eth0 */
1041
1042                 /* try to bring up bus */
1043                 ret = brcmf_bus_start(&drvr_priv->pub);
1044                 if (ret != 0) {
1045                         brcmf_dbg(ERROR, "failed with code %d\n", ret);
1046                         return -1;
1047                 }
1048                 atomic_set(&drvr_priv->pend_8021x_cnt, 0);
1049
1050                 memcpy(net->dev_addr, drvr_priv->pub.mac, ETH_ALEN);
1051
1052                 /* Get current TOE mode from dongle */
1053                 if (brcmf_toe_get(drvr_priv, ifidx, &toe_ol) >= 0
1054                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
1055                         drvr_priv->iflist[ifidx]->net->features |=
1056                                 NETIF_F_IP_CSUM;
1057                 else
1058                         drvr_priv->iflist[ifidx]->net->features &=
1059                                 ~NETIF_F_IP_CSUM;
1060         }
1061         /* Allow transmit calls */
1062         netif_start_queue(net);
1063         drvr_priv->pub.up = 1;
1064         if (unlikely(brcmf_cfg80211_up(drvr_priv->pub.config))) {
1065                 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
1066                 return -1;
1067         }
1068
1069         return ret;
1070 }
1071
1072 int
1073 brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, struct net_device *net,
1074              char *name, u8 *mac_addr, u32 flags, u8 bssidx)
1075 {
1076         struct brcmf_if *ifp;
1077
1078         brcmf_dbg(TRACE, "idx %d, handle->%p\n", ifidx, net);
1079
1080         ifp = drvr_priv->iflist[ifidx];
1081         if (!ifp) {
1082                 ifp = kmalloc(sizeof(struct brcmf_if), GFP_ATOMIC);
1083                 if (!ifp) {
1084                         brcmf_dbg(ERROR, "OOM - struct brcmf_if\n");
1085                         return -ENOMEM;
1086                 }
1087         }
1088
1089         memset(ifp, 0, sizeof(struct brcmf_if));
1090         ifp->info = drvr_priv;
1091         drvr_priv->iflist[ifidx] = ifp;
1092         strlcpy(ifp->name, name, IFNAMSIZ);
1093         if (mac_addr != NULL)
1094                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
1095
1096         if (net == NULL) {
1097                 ifp->state = BRCMF_E_IF_ADD;
1098                 ifp->idx = ifidx;
1099                 wake_up(&drvr_priv->sysioc_waitq);
1100         } else
1101                 ifp->net = net;
1102
1103         return 0;
1104 }
1105
1106 void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx)
1107 {
1108         struct brcmf_if *ifp;
1109
1110         brcmf_dbg(TRACE, "idx %d\n", ifidx);
1111
1112         ifp = drvr_priv->iflist[ifidx];
1113         if (!ifp) {
1114                 brcmf_dbg(ERROR, "Null interface\n");
1115                 return;
1116         }
1117
1118         ifp->state = BRCMF_E_IF_DEL;
1119         ifp->idx = ifidx;
1120         wake_up(&drvr_priv->sysioc_waitq);
1121 }
1122
1123 struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen)
1124 {
1125         struct brcmf_info *drvr_priv = NULL;
1126         struct net_device *net;
1127
1128         brcmf_dbg(TRACE, "Enter\n");
1129
1130         /* Allocate etherdev, including space for private structure */
1131         net = alloc_etherdev(sizeof(drvr_priv));
1132         if (!net) {
1133                 brcmf_dbg(ERROR, "OOM - alloc_etherdev\n");
1134                 goto fail;
1135         }
1136
1137         /* Allocate primary brcmf_info */
1138         drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC);
1139         if (!drvr_priv) {
1140                 brcmf_dbg(ERROR, "OOM - alloc brcmf_info\n");
1141                 goto fail;
1142         }
1143
1144         /*
1145          * Save the brcmf_info into the priv
1146          */
1147         memcpy(netdev_priv(net), &drvr_priv, sizeof(drvr_priv));
1148
1149         /* Set network interface name if it was provided as module parameter */
1150         if (iface_name[0]) {
1151                 int len;
1152                 char ch;
1153                 strncpy(net->name, iface_name, IFNAMSIZ);
1154                 net->name[IFNAMSIZ - 1] = 0;
1155                 len = strlen(net->name);
1156                 ch = net->name[len - 1];
1157                 if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
1158                         strcat(net->name, "%d");
1159         }
1160
1161         if (brcmf_add_if(drvr_priv, 0, net, net->name, NULL, 0, 0) ==
1162             BRCMF_BAD_IF)
1163                 goto fail;
1164
1165         net->netdev_ops = NULL;
1166         mutex_init(&drvr_priv->proto_block);
1167
1168         /* Link to info module */
1169         drvr_priv->pub.info = drvr_priv;
1170
1171         /* Link to bus module */
1172         drvr_priv->pub.bus = bus;
1173         drvr_priv->pub.hdrlen = bus_hdrlen;
1174
1175         /* Attach and link in the protocol */
1176         if (brcmf_proto_attach(&drvr_priv->pub) != 0) {
1177                 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
1178                 goto fail;
1179         }
1180
1181         /* Attach and link in the cfg80211 */
1182         drvr_priv->pub.config =
1183                         brcmf_cfg80211_attach(net,
1184                                               brcmf_bus_get_device(bus),
1185                                               &drvr_priv->pub);
1186         if (unlikely(drvr_priv->pub.config == NULL)) {
1187                 brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
1188                 goto fail;
1189         }
1190
1191         if (brcmf_sysioc) {
1192                 init_waitqueue_head(&drvr_priv->sysioc_waitq);
1193                 drvr_priv->sysioc_tsk = kthread_run(_brcmf_sysioc_thread,
1194                                                     drvr_priv, "_brcmf_sysioc");
1195                 if (IS_ERR(drvr_priv->sysioc_tsk)) {
1196                         printk(KERN_WARNING
1197                                 "_brcmf_sysioc thread failed to start\n");
1198                         drvr_priv->sysioc_tsk = NULL;
1199                 }
1200         } else
1201                 drvr_priv->sysioc_tsk = NULL;
1202
1203         /*
1204          * Save the brcmf_info into the priv
1205          */
1206         memcpy(netdev_priv(net), &drvr_priv, sizeof(drvr_priv));
1207
1208         return &drvr_priv->pub;
1209
1210 fail:
1211         if (net)
1212                 free_netdev(net);
1213         if (drvr_priv)
1214                 brcmf_detach(&drvr_priv->pub);
1215
1216         return NULL;
1217 }
1218
1219 int brcmf_bus_start(struct brcmf_pub *drvr)
1220 {
1221         int ret = -1;
1222         struct brcmf_info *drvr_priv = drvr->info;
1223         /* Room for "event_msgs" + '\0' + bitvec */
1224         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
1225
1226         brcmf_dbg(TRACE, "\n");
1227
1228         /* Bring up the bus */
1229         ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub, true);
1230         if (ret != 0) {
1231                 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
1232                 return ret;
1233         }
1234
1235         /* If bus is not ready, can't come up */
1236         if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) {
1237                 brcmf_dbg(ERROR, "failed bus is not ready\n");
1238                 return -ENODEV;
1239         }
1240
1241         brcmu_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1242                       iovbuf, sizeof(iovbuf));
1243         brcmf_proto_cdc_query_ioctl(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1244                                     sizeof(iovbuf));
1245         memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1246
1247         setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1248         setbit(drvr->eventmask, BRCMF_E_PRUNE);
1249         setbit(drvr->eventmask, BRCMF_E_AUTH);
1250         setbit(drvr->eventmask, BRCMF_E_REASSOC);
1251         setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1252         setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1253         setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1254         setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1255         setbit(drvr->eventmask, BRCMF_E_JOIN);
1256         setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1257         setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1258         setbit(drvr->eventmask, BRCMF_E_LINK);
1259         setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1260         setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1261         setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1262         setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1263         setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1264         setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1265
1266 /* enable dongle roaming event */
1267
1268         drvr->pktfilter_count = 1;
1269         /* Setup filter to allow only unicast */
1270         drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1271
1272         /* Bus is ready, do any protocol initialization */
1273         ret = brcmf_proto_init(&drvr_priv->pub);
1274         if (ret < 0)
1275                 return ret;
1276
1277         return 0;
1278 }
1279
1280 static struct net_device_ops brcmf_netdev_ops_pri = {
1281         .ndo_open = brcmf_netdev_open,
1282         .ndo_stop = brcmf_netdev_stop,
1283         .ndo_get_stats = brcmf_netdev_get_stats,
1284         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
1285         .ndo_start_xmit = brcmf_netdev_start_xmit,
1286         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
1287         .ndo_set_multicast_list = brcmf_netdev_set_multicast_list
1288 };
1289
1290 int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
1291 {
1292         struct brcmf_info *drvr_priv = drvr->info;
1293         struct net_device *net;
1294         u8 temp_addr[ETH_ALEN] = {
1295                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
1296
1297         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1298
1299         net = drvr_priv->iflist[ifidx]->net;
1300         net->netdev_ops = &brcmf_netdev_ops_pri;
1301
1302         /*
1303          * We have to use the primary MAC for virtual interfaces
1304          */
1305         if (ifidx != 0) {
1306                 /* for virtual interfaces use the primary MAC  */
1307                 memcpy(temp_addr, drvr_priv->pub.mac, ETH_ALEN);
1308
1309         }
1310
1311         if (ifidx == 1) {
1312                 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
1313                 /*  ACCESSPOINT INTERFACE CASE */
1314                 temp_addr[0] |= 0X02;   /* set bit 2 ,
1315                          - Locally Administered address  */
1316
1317         }
1318         net->hard_header_len = ETH_HLEN + drvr_priv->pub.hdrlen;
1319         net->ethtool_ops = &brcmf_ethtool_ops;
1320
1321         drvr_priv->pub.rxsz = net->mtu + net->hard_header_len +
1322                                 drvr_priv->pub.hdrlen;
1323
1324         memcpy(net->dev_addr, temp_addr, ETH_ALEN);
1325
1326         if (register_netdev(net) != 0) {
1327                 brcmf_dbg(ERROR, "couldn't register the net device\n");
1328                 goto fail;
1329         }
1330
1331         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", net->name);
1332
1333         return 0;
1334
1335 fail:
1336         net->netdev_ops = NULL;
1337         return -EBADE;
1338 }
1339
1340 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1341 {
1342         struct brcmf_info *drvr_priv;
1343
1344         brcmf_dbg(TRACE, "Enter\n");
1345
1346         if (drvr) {
1347                 drvr_priv = drvr->info;
1348                 if (drvr_priv) {
1349                         /* Stop the protocol module */
1350                         brcmf_proto_stop(&drvr_priv->pub);
1351
1352                         /* Stop the bus module */
1353                         brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus, true);
1354                 }
1355         }
1356 }
1357
1358 void brcmf_detach(struct brcmf_pub *drvr)
1359 {
1360         struct brcmf_info *drvr_priv;
1361
1362         brcmf_dbg(TRACE, "Enter\n");
1363
1364         if (drvr) {
1365                 drvr_priv = drvr->info;
1366                 if (drvr_priv) {
1367                         struct brcmf_if *ifp;
1368                         int i;
1369
1370                         for (i = 1; i < BRCMF_MAX_IFS; i++)
1371                                 if (drvr_priv->iflist[i])
1372                                         brcmf_del_if(drvr_priv, i);
1373
1374                         ifp = drvr_priv->iflist[0];
1375                         if (ifp->net->netdev_ops == &brcmf_netdev_ops_pri) {
1376                                 brcmf_netdev_stop(ifp->net);
1377                                 unregister_netdev(ifp->net);
1378                         }
1379
1380                         if (drvr_priv->sysioc_tsk) {
1381                                 send_sig(SIGTERM, drvr_priv->sysioc_tsk, 1);
1382                                 kthread_stop(drvr_priv->sysioc_tsk);
1383                                 drvr_priv->sysioc_tsk = NULL;
1384                         }
1385
1386                         brcmf_bus_detach(drvr);
1387
1388                         if (drvr->prot)
1389                                 brcmf_proto_detach(drvr);
1390
1391                         brcmf_cfg80211_detach(drvr->config);
1392
1393                         free_netdev(ifp->net);
1394                         kfree(ifp);
1395                         kfree(drvr_priv);
1396                 }
1397         }
1398 }
1399
1400 static void __exit brcmf_module_cleanup(void)
1401 {
1402         brcmf_dbg(TRACE, "Enter\n");
1403
1404         brcmf_bus_unregister();
1405 }
1406
1407 static int __init brcmf_module_init(void)
1408 {
1409         int error;
1410
1411         brcmf_dbg(TRACE, "Enter\n");
1412
1413         error = brcmf_bus_register();
1414
1415         if (error) {
1416                 brcmf_dbg(ERROR, "brcmf_bus_register failed\n");
1417                 goto failed;
1418         }
1419         return 0;
1420
1421 failed:
1422         return -EINVAL;
1423 }
1424
1425 module_init(brcmf_module_init);
1426 module_exit(brcmf_module_cleanup);
1427
1428 int brcmf_os_proto_block(struct brcmf_pub *drvr)
1429 {
1430         struct brcmf_info *drvr_priv = drvr->info;
1431
1432         if (drvr_priv) {
1433                 mutex_lock(&drvr_priv->proto_block);
1434                 return 1;
1435         }
1436         return 0;
1437 }
1438
1439 int brcmf_os_proto_unblock(struct brcmf_pub *drvr)
1440 {
1441         struct brcmf_info *drvr_priv = drvr->info;
1442
1443         if (drvr_priv) {
1444                 mutex_unlock(&drvr_priv->proto_block);
1445                 return 1;
1446         }
1447
1448         return 0;
1449 }
1450
1451 static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv)
1452 {
1453         return atomic_read(&drvr_priv->pend_8021x_cnt);
1454 }
1455
1456 #define MAX_WAIT_FOR_8021X_TX   10
1457
1458 int brcmf_netdev_wait_pend8021x(struct net_device *dev)
1459 {
1460         struct brcmf_info *drvr_priv = *(struct brcmf_info **)netdev_priv(dev);
1461         int timeout = 10 * HZ / 1000;
1462         int ntimes = MAX_WAIT_FOR_8021X_TX;
1463         int pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1464
1465         while (ntimes && pend) {
1466                 if (pend) {
1467                         set_current_state(TASK_INTERRUPTIBLE);
1468                         schedule_timeout(timeout);
1469                         set_current_state(TASK_RUNNING);
1470                         ntimes--;
1471                 }
1472                 pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1473         }
1474         return pend;
1475 }
1476
1477 #ifdef BCMDBG
1478 int brcmf_write_to_file(struct brcmf_pub *drvr, u8 *buf, int size)
1479 {
1480         int ret = 0;
1481         struct file *fp;
1482         mm_segment_t old_fs;
1483         loff_t pos = 0;
1484
1485         /* change to KERNEL_DS address limit */
1486         old_fs = get_fs();
1487         set_fs(KERNEL_DS);
1488
1489         /* open file to write */
1490         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1491         if (!fp) {
1492                 brcmf_dbg(ERROR, "open file error\n");
1493                 ret = -1;
1494                 goto exit;
1495         }
1496
1497         /* Write buf to file */
1498         fp->f_op->write(fp, buf, size, &pos);
1499
1500 exit:
1501         /* free buf before return */
1502         kfree(buf);
1503         /* close file before return */
1504         if (fp)
1505                 filp_close(fp, current->files);
1506         /* restore previous address limit */
1507         set_fs(old_fs);
1508
1509         return ret;
1510 }
1511 #endif                          /* BCMDBG */