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         struct work_struct setmacaddr_work;
  77         struct work_struct multicast_work;
  78         u8 macvalue[ETH_ALEN];
  79         atomic_t pend_8021x_cnt;
  80 };
  81
  82 /* Error bits */
  83 module_param(brcmf_msg_level, int, 0);
  84
  85
  86 static int brcmf_net2idx(struct brcmf_info *drvr_priv, struct net_device *net)
  87 {
  88         int i = 0;
  89
  90         while (i < BRCMF_MAX_IFS) {
  91                 if (drvr_priv->iflist[i] && (drvr_priv->iflist[i]->net == net))
  92                         return i;
  93                 i++;
  94         }
  95
  96         return BRCMF_BAD_IF;
  97 }
  98
  99 int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name)
 100 {
 101         int i = BRCMF_MAX_IFS;
 102
 103         if (name == NULL || *name == '\0')
 104                 return 0;
 105
 106         while (--i > 0)
 107                 if (drvr_priv->iflist[i]
 108                     && !strncmp(drvr_priv->iflist[i]->name, name, IFNAMSIZ))
 109                         break;
 110
 111         brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
 112
 113         return i;               /* default - the primary interface */
 114 }
 115
 116 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
 117 {
 118         struct brcmf_info *drvr_priv = drvr->info;
 119
 120         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
 121                 brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
 122                 return "<if_bad>";
 123         }
 124
 125         if (drvr_priv->iflist[ifidx] == NULL) {
 126                 brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
 127                 return "<if_null>";
 128         }
 129
 130         if (drvr_priv->iflist[ifidx]->net)
 131                 return drvr_priv->iflist[ifidx]->net->name;
 132
 133         return "<if_none>";
 134 }
 135
 136 static void _brcmf_set_multicast_list(struct work_struct *work)
 137 {
 138         struct net_device *dev;
 139         struct netdev_hw_addr *ha;
 140         u32 allmulti, cnt;
 141         __le32 cnt_le;
 142         __le32 allmulti_le;
 143
 144         struct brcmf_ioctl ioc;
 145         char *buf, *bufp;
 146         uint buflen;
 147         int ret;
 148
 149         struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
 150                                                     multicast_work);
 151
 152         dev = drvr_priv->iflist[0]->net;
 153         cnt = netdev_mc_count(dev);
 154
 155         /* Determine initial value of allmulti flag */
 156         allmulti = (dev->flags & IFF_ALLMULTI) ? true : false;
 157
 158         /* Send down the multicast list first. */
 159
 160         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
 161         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 162         if (!bufp) {
 163                 brcmf_dbg(ERROR, "%s: out of memory for mcast_list, cnt %d\n",
 164                           brcmf_ifname(&drvr_priv->pub, 0), cnt);
 165                 return;
 166         }
 167
 168         strcpy(bufp, "mcast_list");
 169         bufp += strlen("mcast_list") + 1;
 170
 171         cnt_le = cpu_to_le32(cnt);
 172         memcpy(bufp, &cnt_le, sizeof(cnt));
 173         bufp += sizeof(cnt_le);
 174
 175         netdev_for_each_mc_addr(ha, dev) {
 176                 if (!cnt)
 177                         break;
 178                 memcpy(bufp, ha->addr, ETH_ALEN);
 179                 bufp += ETH_ALEN;
 180                 cnt--;
 181         }
 182
 183         memset(&ioc, 0, sizeof(ioc));
 184         ioc.cmd = BRCMF_C_SET_VAR;
 185         ioc.buf = buf;
 186         ioc.len = buflen;
 187         ioc.set = true;
 188
 189         ret = brcmf_proto_ioctl(&drvr_priv->pub, 0, &ioc, ioc.len);
 190         if (ret < 0) {
 191                 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
 192                           brcmf_ifname(&drvr_priv->pub, 0), cnt);
 193                 allmulti = cnt ? true : allmulti;
 194         }
 195
 196         kfree(buf);
 197
 198         /* Now send the allmulti setting.  This is based on the setting in the
 199          * net_device flags, but might be modified above to be turned on if we
 200          * were trying to set some addresses and dongle rejected it...
 201          */
 202
 203         buflen = sizeof("allmulti") + sizeof(allmulti);
 204         buf = kmalloc(buflen, GFP_ATOMIC);
 205         if (!buf) {
 206                 brcmf_dbg(ERROR, "%s: out of memory for allmulti\n",
 207                           brcmf_ifname(&drvr_priv->pub, 0));
 208                 return;
 209         }
 210         allmulti_le = cpu_to_le32(allmulti);
 211
 212         if (!brcmu_mkiovar
 213             ("allmulti", (void *)&allmulti_le,
 214             sizeof(allmulti_le), buf, buflen)) {
 215                 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
 216                           brcmf_ifname(&drvr_priv->pub, 0),
 217                           (int)sizeof(allmulti), buflen);
 218                 kfree(buf);
 219                 return;
 220         }
 221
 222         memset(&ioc, 0, sizeof(ioc));
 223         ioc.cmd = BRCMF_C_SET_VAR;
 224         ioc.buf = buf;
 225         ioc.len = buflen;
 226         ioc.set = true;
 227
 228         ret = brcmf_proto_ioctl(&drvr_priv->pub, 0, &ioc, ioc.len);
 229         if (ret < 0) {
 230                 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
 231                           brcmf_ifname(&drvr_priv->pub, 0),
 232                           le32_to_cpu(allmulti_le));
 233         }
 234
 235         kfree(buf);
 236
 237         /* Finally, pick up the PROMISC flag as well, like the NIC
 238                  driver does */
 239
 240         allmulti = (dev->flags & IFF_PROMISC) ? true : false;
 241         allmulti_le = cpu_to_le32(allmulti);
 242
 243         memset(&ioc, 0, sizeof(ioc));
 244         ioc.cmd = BRCMF_C_SET_PROMISC;
 245         ioc.buf = &allmulti_le;
 246         ioc.len = sizeof(allmulti_le);
 247         ioc.set = true;
 248
 249         ret = brcmf_proto_ioctl(&drvr_priv->pub, 0, &ioc, ioc.len);
 250         if (ret < 0) {
 251                 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
 252                           brcmf_ifname(&drvr_priv->pub, 0),
 253                           le32_to_cpu(allmulti_le));
 254         }
 255 }
 256
 257 static void
 258 _brcmf_set_mac_address(struct work_struct *work)
 259 {
 260         char buf[32];
 261         struct brcmf_ioctl ioc;
 262         int ret;
 263
 264         struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
 265                                                     setmacaddr_work);
 266
 267         brcmf_dbg(TRACE, "enter\n");
 268         if (!brcmu_mkiovar("cur_etheraddr", (char *)drvr_priv->macvalue,
 269                            ETH_ALEN, buf, 32)) {
 270                 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
 271                           brcmf_ifname(&drvr_priv->pub, 0));
 272                 return;
 273         }
 274         memset(&ioc, 0, sizeof(ioc));
 275         ioc.cmd = BRCMF_C_SET_VAR;
 276         ioc.buf = buf;
 277         ioc.len = 32;
 278         ioc.set = true;
 279
 280         ret = brcmf_proto_ioctl(&drvr_priv->pub, 0, &ioc, ioc.len);
 281         if (ret < 0)
 282                 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
 283                           brcmf_ifname(&drvr_priv->pub, 0));
 284         else
 285                 memcpy(drvr_priv->iflist[0]->net->dev_addr,
 286                        drvr_priv->macvalue, ETH_ALEN);
 287
 288         return;
 289 }
 290
 291 /* Virtual interfaces only ((ifp && ifp->info && ifp->idx == true) */
 292 static void brcmf_op_if(struct brcmf_if *ifp)
 293 {
 294         struct brcmf_info *drvr_priv;
 295         int ret = 0, err = 0;
 296
 297         drvr_priv = ifp->info;
 298
 299         brcmf_dbg(TRACE, "idx %d, state %d\n", ifp->idx, ifp->state);
 300
 301         switch (ifp->state) {
 302         case BRCMF_E_IF_ADD:
 303                 /*
 304                  * Delete the existing interface before overwriting it
 305                  * in case we missed the BRCMF_E_IF_DEL event.
 306                  */
 307                 if (ifp->net != NULL) {
 308                         brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
 309                                   ifp->net->name);
 310                         netif_stop_queue(ifp->net);
 311                         unregister_netdev(ifp->net);
 312                         free_netdev(ifp->net);
 313                 }
 314                 /* Allocate netdev, including space for private structure */
 315                 ifp->net = alloc_netdev(sizeof(drvr_priv), "wlan%d",
 316                                         ether_setup);
 317                 if (!ifp->net) {
 318                         brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
 319                         ret = -ENOMEM;
 320                 }
 321                 if (ret == 0) {
 322                         strcpy(ifp->net->name, ifp->name);
 323                         memcpy(netdev_priv(ifp->net), &drvr_priv,
 324                                sizeof(drvr_priv));
 325                         err = brcmf_net_attach(&drvr_priv->pub, ifp->idx);
 326                         if (err != 0) {
 327                                 brcmf_dbg(ERROR, "brcmf_net_attach failed, err %d\n",
 328                                           err);
 329                                 ret = -EOPNOTSUPP;
 330                         } else {
 331                                 brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
 332                                           current->pid, ifp->net->name);
 333                                 ifp->state = 0;
 334                         }
 335                 }
 336                 break;
 337         case BRCMF_E_IF_DEL:
 338                 if (ifp->net != NULL) {
 339                         brcmf_dbg(TRACE, "got 'WLC_E_IF_DEL' state\n");
 340                         netif_stop_queue(ifp->net);
 341                         unregister_netdev(ifp->net);
 342                         ret = BRCMF_DEL_IF;     /* Make sure the free_netdev()
 343                                                          is called */
 344                 }
 345                 break;
 346         default:
 347                 brcmf_dbg(ERROR, "bad op %d\n", ifp->state);
 348                 break;
 349         }
 350
 351         if (ret < 0) {
 352                 if (ifp->net)
 353                         free_netdev(ifp->net);
 354
 355                 drvr_priv->iflist[ifp->idx] = NULL;
 356                 kfree(ifp);
 357         }
 358 }
 359
 360 static int brcmf_netdev_set_mac_address(struct net_device *dev, void *addr)
 361 {
 362         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(dev);
 363         struct sockaddr *sa = (struct sockaddr *)addr;
 364         int ifidx;
 365
 366         ifidx = brcmf_net2idx(drvr_priv, dev);
 367         if (ifidx == BRCMF_BAD_IF)
 368                 return -1;
 369
 370         memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN);
 371         schedule_work(&drvr_priv->setmacaddr_work);
 372         return 0;
 373 }
 374
 375 static void brcmf_netdev_set_multicast_list(struct net_device *dev)
 376 {
 377         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(dev);
 378         int ifidx;
 379
 380         ifidx = brcmf_net2idx(drvr_priv, dev);
 381         if (ifidx == BRCMF_BAD_IF)
 382                 return;
 383
 384         schedule_work(&drvr_priv->multicast_work);
 385 }
 386
 387 int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
 388 {
 389         struct brcmf_info *drvr_priv = drvr->info;
 390
 391         /* Reject if down */
 392         if (!drvr->up || (drvr->busstate == BRCMF_BUS_DOWN))
 393                 return -ENODEV;
 394
 395         /* Update multicast statistic */
 396         if (pktbuf->len >= ETH_ALEN) {
 397                 u8 *pktdata = (u8 *) (pktbuf->data);
 398                 struct ethhdr *eh = (struct ethhdr *)pktdata;
 399
 400                 if (is_multicast_ether_addr(eh->h_dest))
 401                         drvr->tx_multicast++;
 402                 if (ntohs(eh->h_proto) == ETH_P_PAE)
 403                         atomic_inc(&drvr_priv->pend_8021x_cnt);
 404         }
 405
 406         /* If the protocol uses a data header, apply it */
 407         brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
 408
 409         /* Use bus module to send data frame */
 410         return brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf);
 411 }
 412
 413 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *net)
 414 {
 415         int ret;
 416         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 417         int ifidx;
 418
 419         brcmf_dbg(TRACE, "Enter\n");
 420
 421         /* Reject if down */
 422         if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) {
 423                 brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n",
 424                           drvr_priv->pub.up, drvr_priv->pub.busstate);
 425                 netif_stop_queue(net);
 426                 return -ENODEV;
 427         }
 428
 429         ifidx = brcmf_net2idx(drvr_priv, net);
 430         if (ifidx == BRCMF_BAD_IF) {
 431                 brcmf_dbg(ERROR, "bad ifidx %d\n", ifidx);
 432                 netif_stop_queue(net);
 433                 return -ENODEV;
 434         }
 435
 436         /* Make sure there's enough room for any header */
 437         if (skb_headroom(skb) < drvr_priv->pub.hdrlen) {
 438                 struct sk_buff *skb2;
 439
 440                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 441                           brcmf_ifname(&drvr_priv->pub, ifidx));
 442                 drvr_priv->pub.tx_realloc++;
 443                 skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen);
 444                 dev_kfree_skb(skb);
 445                 skb = skb2;
 446                 if (skb == NULL) {
 447                         brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
 448                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 449                         ret = -ENOMEM;
 450                         goto done;
 451                 }
 452         }
 453
 454         ret = brcmf_sendpkt(&drvr_priv->pub, ifidx, skb);
 455
 456 done:
 457         if (ret)
 458                 drvr_priv->pub.dstats.tx_dropped++;
 459         else
 460                 drvr_priv->pub.tx_packets++;
 461
 462         /* Return ok: we always eat the packet */
 463         return 0;
 464 }
 465
 466 void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state)
 467 {
 468         struct net_device *net;
 469         struct brcmf_info *drvr_priv = drvr->info;
 470
 471         brcmf_dbg(TRACE, "Enter\n");
 472
 473         drvr->txoff = state;
 474         net = drvr_priv->iflist[ifidx]->net;
 475         if (state == ON)
 476                 netif_stop_queue(net);
 477         else
 478                 netif_wake_queue(net);
 479 }
 480
 481 static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx,
 482                             void *pktdata, struct brcmf_event_msg *event,
 483                             void **data)
 484 {
 485         int bcmerror = 0;
 486
 487         bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data);
 488         if (bcmerror != 0)
 489                 return bcmerror;
 490
 491         if (drvr_priv->iflist[*ifidx]->net)
 492                 brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->net,
 493                                      event, *data);
 494
 495         return bcmerror;
 496 }
 497
 498 void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb,
 499                   int numpkt)
 500 {
 501         struct brcmf_info *drvr_priv = drvr->info;
 502         unsigned char *eth;
 503         uint len;
 504         void *data;
 505         struct sk_buff *pnext, *save_pktbuf;
 506         int i;
 507         struct brcmf_if *ifp;
 508         struct brcmf_event_msg event;
 509
 510         brcmf_dbg(TRACE, "Enter\n");
 511
 512         save_pktbuf = skb;
 513
 514         for (i = 0; skb && i < numpkt; i++, skb = pnext) {
 515
 516                 pnext = skb->next;
 517                 skb->next = NULL;
 518
 519                 /* Get the protocol, maintain skb around eth_type_trans()
 520                  * The main reason for this hack is for the limitation of
 521                  * Linux 2.4 where 'eth_type_trans' uses the
 522                  * 'net->hard_header_len'
 523                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 524                  * coping of the packet coming from the network stack to add
 525                  * BDC, Hardware header etc, during network interface
 526                  * registration
 527                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 528                  * required
 529                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 530                  */
 531                 eth = skb->data;
 532                 len = skb->len;
 533
 534                 ifp = drvr_priv->iflist[ifidx];
 535                 if (ifp == NULL)
 536                         ifp = drvr_priv->iflist[0];
 537
 538                 skb->dev = ifp->net;
 539                 skb->protocol = eth_type_trans(skb, skb->dev);
 540
 541                 if (skb->pkt_type == PACKET_MULTICAST)
 542                         drvr_priv->pub.rx_multicast++;
 543
 544                 skb->data = eth;
 545                 skb->len = len;
 546
 547                 /* Strip header, count, deliver upward */
 548                 skb_pull(skb, ETH_HLEN);
 549
 550                 /* Process special event packets and then discard them */
 551                 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
 552                         brcmf_host_event(drvr_priv, &ifidx,
 553                                           skb_mac_header(skb),
 554                                           &event, &data);
 555
 556                 if (drvr_priv->iflist[ifidx] &&
 557                     !drvr_priv->iflist[ifidx]->state)
 558                         ifp = drvr_priv->iflist[ifidx];
 559
 560                 if (ifp->net)
 561                         ifp->net->last_rx = jiffies;
 562
 563                 drvr->dstats.rx_bytes += skb->len;
 564                 drvr->rx_packets++;     /* Local count */
 565
 566                 if (in_interrupt())
 567                         netif_rx(skb);
 568                 else
 569                         /* If the receive is not processed inside an ISR,
 570                          * the softirqd must be woken explicitly to service
 571                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 572                          * by netif_rx_ni(), but in earlier kernels, we need
 573                          * to do it manually.
 574                          */
 575                         netif_rx_ni(skb);
 576         }
 577 }
 578
 579 void brcmf_txcomplete(struct brcmf_pub *drvr, struct sk_buff *txp, bool success)
 580 {
 581         uint ifidx;
 582         struct brcmf_info *drvr_priv = drvr->info;
 583         struct ethhdr *eh;
 584         u16 type;
 585
 586         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 587
 588         eh = (struct ethhdr *)(txp->data);
 589         type = ntohs(eh->h_proto);
 590
 591         if (type == ETH_P_PAE)
 592                 atomic_dec(&drvr_priv->pend_8021x_cnt);
 593
 594 }
 595
 596 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *net)
 597 {
 598         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 599         struct brcmf_if *ifp;
 600         int ifidx;
 601
 602         brcmf_dbg(TRACE, "Enter\n");
 603
 604         ifidx = brcmf_net2idx(drvr_priv, net);
 605         if (ifidx == BRCMF_BAD_IF)
 606                 return NULL;
 607
 608         ifp = drvr_priv->iflist[ifidx];
 609
 610         if (drvr_priv->pub.up)
 611                 /* Use the protocol to get dongle stats */
 612                 brcmf_proto_dstats(&drvr_priv->pub);
 613
 614         /* Copy dongle stats to net device stats */
 615         ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets;
 616         ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets;
 617         ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes;
 618         ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes;
 619         ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors;
 620         ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors;
 621         ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped;
 622         ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped;
 623         ifp->stats.multicast = drvr_priv->pub.dstats.multicast;
 624
 625         return &ifp->stats;
 626 }
 627
 628 /* Retrieve current toe component enables, which are kept
 629          as a bitmap in toe_ol iovar */
 630 static int brcmf_toe_get(struct brcmf_info *drvr_priv, int ifidx, u32 *toe_ol)
 631 {
 632         struct brcmf_ioctl ioc;
 633         char buf[32];
 634         int ret;
 635
 636         memset(&ioc, 0, sizeof(ioc));
 637
 638         ioc.cmd = BRCMF_C_GET_VAR;
 639         ioc.buf = buf;
 640         ioc.len = (uint) sizeof(buf);
 641         ioc.set = false;
 642
 643         strcpy(buf, "toe_ol");
 644         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.len);
 645         if (ret < 0) {
 646                 /* Check for older dongle image that doesn't support toe_ol */
 647                 if (ret == -EIO) {
 648                         brcmf_dbg(ERROR, "%s: toe not supported by device\n",
 649                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 650                         return -EOPNOTSUPP;
 651                 }
 652
 653                 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
 654                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 655                 return ret;
 656         }
 657
 658         memcpy(toe_ol, buf, sizeof(u32));
 659         return 0;
 660 }
 661
 662 /* Set current toe component enables in toe_ol iovar,
 663          and set toe global enable iovar */
 664 static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol)
 665 {
 666         struct brcmf_ioctl ioc;
 667         char buf[32];
 668         int toe, ret;
 669
 670         memset(&ioc, 0, sizeof(ioc));
 671
 672         ioc.cmd = BRCMF_C_SET_VAR;
 673         ioc.buf = buf;
 674         ioc.len = (uint) sizeof(buf);
 675         ioc.set = true;
 676
 677         /* Set toe_ol as requested */
 678
 679         strcpy(buf, "toe_ol");
 680         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
 681
 682         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.len);
 683         if (ret < 0) {
 684                 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
 685                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 686                 return ret;
 687         }
 688
 689         /* Enable toe globally only if any components are enabled. */
 690
 691         toe = (toe_ol != 0);
 692
 693         strcpy(buf, "toe");
 694         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
 695
 696         ret = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, &ioc, ioc.len);
 697         if (ret < 0) {
 698                 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
 699                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 700                 return ret;
 701         }
 702
 703         return 0;
 704 }
 705
 706 static void brcmf_ethtool_get_drvinfo(struct net_device *net,
 707                                     struct ethtool_drvinfo *info)
 708 {
 709         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 710
 711         sprintf(info->driver, KBUILD_MODNAME);
 712         sprintf(info->version, "%lu", drvr_priv->pub.drv_version);
 713         sprintf(info->fw_version, "%s", BCM4329_FW_NAME);
 714         sprintf(info->bus_info, "%s",
 715                 dev_name(brcmf_bus_get_device(drvr_priv->pub.bus)));
 716 }
 717
 718 static struct ethtool_ops brcmf_ethtool_ops = {
 719         .get_drvinfo = brcmf_ethtool_get_drvinfo
 720 };
 721
 722 static int brcmf_ethtool(struct brcmf_info *drvr_priv, void __user *uaddr)
 723 {
 724         struct ethtool_drvinfo info;
 725         char drvname[sizeof(info.driver)];
 726         u32 cmd;
 727         struct ethtool_value edata;
 728         u32 toe_cmpnt, csum_dir;
 729         int ret;
 730
 731         brcmf_dbg(TRACE, "Enter\n");
 732
 733         /* all ethtool calls start with a cmd word */
 734         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 735                 return -EFAULT;
 736
 737         switch (cmd) {
 738         case ETHTOOL_GDRVINFO:
 739                 /* Copy out any request driver name */
 740                 if (copy_from_user(&info, uaddr, sizeof(info)))
 741                         return -EFAULT;
 742                 strncpy(drvname, info.driver, sizeof(info.driver));
 743                 drvname[sizeof(info.driver) - 1] = '\0';
 744
 745                 /* clear struct for return */
 746                 memset(&info, 0, sizeof(info));
 747                 info.cmd = cmd;
 748
 749                 /* if requested, identify ourselves */
 750                 if (strcmp(drvname, "?dhd") == 0) {
 751                         sprintf(info.driver, "dhd");
 752                         strcpy(info.version, BRCMF_VERSION_STR);
 753                 }
 754
 755                 /* otherwise, require dongle to be up */
 756                 else if (!drvr_priv->pub.up) {
 757                         brcmf_dbg(ERROR, "dongle is not up\n");
 758                         return -ENODEV;
 759                 }
 760
 761                 /* finally, report dongle driver type */
 762                 else if (drvr_priv->pub.iswl)
 763                         sprintf(info.driver, "wl");
 764                 else
 765                         sprintf(info.driver, "xx");
 766
 767                 sprintf(info.version, "%lu", drvr_priv->pub.drv_version);
 768                 if (copy_to_user(uaddr, &info, sizeof(info)))
 769                         return -EFAULT;
 770                 brcmf_dbg(CTL, "given %*s, returning %s\n",
 771                           (int)sizeof(drvname), drvname, info.driver);
 772                 break;
 773
 774                 /* Get toe offload components from dongle */
 775         case ETHTOOL_GRXCSUM:
 776         case ETHTOOL_GTXCSUM:
 777                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 778                 if (ret < 0)
 779                         return ret;
 780
 781                 csum_dir =
 782                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 783
 784                 edata.cmd = cmd;
 785                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 786
 787                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 788                         return -EFAULT;
 789                 break;
 790
 791                 /* Set toe offload components in dongle */
 792         case ETHTOOL_SRXCSUM:
 793         case ETHTOOL_STXCSUM:
 794                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 795                         return -EFAULT;
 796
 797                 /* Read the current settings, update and write back */
 798                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 799                 if (ret < 0)
 800                         return ret;
 801
 802                 csum_dir =
 803                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 804
 805                 if (edata.data != 0)
 806                         toe_cmpnt |= csum_dir;
 807                 else
 808                         toe_cmpnt &= ~csum_dir;
 809
 810                 ret = brcmf_toe_set(drvr_priv, 0, toe_cmpnt);
 811                 if (ret < 0)
 812                         return ret;
 813
 814                 /* If setting TX checksum mode, tell Linux the new mode */
 815                 if (cmd == ETHTOOL_STXCSUM) {
 816                         if (edata.data)
 817                                 drvr_priv->iflist[0]->net->features |=
 818                                     NETIF_F_IP_CSUM;
 819                         else
 820                                 drvr_priv->iflist[0]->net->features &=
 821                                     ~NETIF_F_IP_CSUM;
 822                 }
 823
 824                 break;
 825
 826         default:
 827                 return -EOPNOTSUPP;
 828         }
 829
 830         return 0;
 831 }
 832
 833 static int brcmf_netdev_ioctl_entry(struct net_device *net, struct ifreq *ifr,
 834                                     int cmd)
 835 {
 836         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 837         int ifidx;
 838
 839         ifidx = brcmf_net2idx(drvr_priv, net);
 840         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifidx, cmd);
 841
 842         if (ifidx == BRCMF_BAD_IF)
 843                 return -1;
 844
 845         if (cmd == SIOCETHTOOL)
 846                 return brcmf_ethtool(drvr_priv, ifr->ifr_data);
 847
 848         return -EOPNOTSUPP;
 849 }
 850
 851 /* called only from within this driver */
 852 int brcmf_netdev_ioctl_priv(struct net_device *net, struct brcmf_ioctl *ioc)
 853 {
 854         int bcmerror = 0;
 855         int buflen = 0;
 856         bool is_set_key_cmd;
 857         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 858         int ifidx;
 859
 860         ifidx = brcmf_net2idx(drvr_priv, net);
 861
 862         if (ioc->buf != NULL)
 863                 buflen = min_t(uint, ioc->len, BRCMF_IOCTL_MAXLEN);
 864
 865         /* send to dongle (must be up, and wl) */
 866         if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) {
 867                 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
 868                 bcmerror = -EIO;
 869                 goto done;
 870         }
 871
 872         if (!drvr_priv->pub.iswl) {
 873                 bcmerror = -EIO;
 874                 goto done;
 875         }
 876
 877         /*
 878          * Intercept BRCMF_C_SET_KEY IOCTL - serialize M4 send and
 879          * set key IOCTL to prevent M4 encryption.
 880          */
 881         is_set_key_cmd = ((ioc->cmd == BRCMF_C_SET_KEY) ||
 882                           ((ioc->cmd == BRCMF_C_SET_VAR) &&
 883                            !(strncmp("wsec_key", ioc->buf, 9))) ||
 884                           ((ioc->cmd == BRCMF_C_SET_VAR) &&
 885                            !(strncmp("bsscfg:wsec_key", ioc->buf, 15))));
 886         if (is_set_key_cmd)
 887                 brcmf_netdev_wait_pend8021x(net);
 888
 889         bcmerror = brcmf_proto_ioctl(&drvr_priv->pub, ifidx, ioc, buflen);
 890
 891 done:
 892         if (bcmerror > 0)
 893                 bcmerror = 0;
 894
 895         return bcmerror;
 896 }
 897
 898 static int brcmf_netdev_stop(struct net_device *net)
 899 {
 900         struct brcmf_pub *drvr = *(struct brcmf_pub **) netdev_priv(net);
 901
 902         brcmf_dbg(TRACE, "Enter\n");
 903         brcmf_cfg80211_down(drvr->config);
 904         if (drvr->up == 0)
 905                 return 0;
 906
 907         /* Set state and stop OS transmissions */
 908         drvr->up = 0;
 909         netif_stop_queue(net);
 910
 911         return 0;
 912 }
 913
 914 static int brcmf_netdev_open(struct net_device *net)
 915 {
 916         struct brcmf_info *drvr_priv = *(struct brcmf_info **) netdev_priv(net);
 917         u32 toe_ol;
 918         int ifidx = brcmf_net2idx(drvr_priv, net);
 919         s32 ret = 0;
 920
 921         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
 922
 923         if (ifidx == 0) {       /* do it only for primary eth0 */
 924
 925                 /* try to bring up bus */
 926                 ret = brcmf_bus_start(&drvr_priv->pub);
 927                 if (ret != 0) {
 928                         brcmf_dbg(ERROR, "failed with code %d\n", ret);
 929                         return -1;
 930                 }
 931                 atomic_set(&drvr_priv->pend_8021x_cnt, 0);
 932
 933                 memcpy(net->dev_addr, drvr_priv->pub.mac, ETH_ALEN);
 934
 935                 /* Get current TOE mode from dongle */
 936                 if (brcmf_toe_get(drvr_priv, ifidx, &toe_ol) >= 0
 937                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
 938                         drvr_priv->iflist[ifidx]->net->features |=
 939                                 NETIF_F_IP_CSUM;
 940                 else
 941                         drvr_priv->iflist[ifidx]->net->features &=
 942                                 ~NETIF_F_IP_CSUM;
 943         }
 944         /* Allow transmit calls */
 945         netif_start_queue(net);
 946         drvr_priv->pub.up = 1;
 947         if (brcmf_cfg80211_up(drvr_priv->pub.config)) {
 948                 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
 949                 return -1;
 950         }
 951
 952         return ret;
 953 }
 954
 955 int
 956 brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, struct net_device *net,
 957              char *name, u8 *mac_addr, u32 flags, u8 bssidx)
 958 {
 959         struct brcmf_if *ifp;
 960
 961         brcmf_dbg(TRACE, "idx %d, handle->%p\n", ifidx, net);
 962
 963         ifp = drvr_priv->iflist[ifidx];
 964         if (!ifp) {
 965                 ifp = kmalloc(sizeof(struct brcmf_if), GFP_ATOMIC);
 966                 if (!ifp) {
 967                         brcmf_dbg(ERROR, "OOM - struct brcmf_if\n");
 968                         return -ENOMEM;
 969                 }
 970         }
 971
 972         memset(ifp, 0, sizeof(struct brcmf_if));
 973         ifp->info = drvr_priv;
 974         drvr_priv->iflist[ifidx] = ifp;
 975         strlcpy(ifp->name, name, IFNAMSIZ);
 976         if (mac_addr != NULL)
 977                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
 978
 979         if (net == NULL) {
 980                 ifp->state = BRCMF_E_IF_ADD;
 981                 ifp->idx = ifidx;
 982                 brcmf_op_if(ifp);
 983         } else
 984                 ifp->net = net;
 985
 986         return 0;
 987 }
 988
 989 void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx)
 990 {
 991         struct brcmf_if *ifp;
 992
 993         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 994
 995         ifp = drvr_priv->iflist[ifidx];
 996         if (!ifp) {
 997                 brcmf_dbg(ERROR, "Null interface\n");
 998                 return;
 999         }
1000
1001         ifp->state = BRCMF_E_IF_DEL;
1002         ifp->idx = ifidx;
1003         brcmf_op_if(ifp);
1004 }
1005
1006 struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen)
1007 {
1008         struct brcmf_info *drvr_priv = NULL;
1009         struct net_device *net;
1010
1011         brcmf_dbg(TRACE, "Enter\n");
1012
1013         /* Allocate netdev, including space for private structure */
1014         net = alloc_netdev(sizeof(drvr_priv), "wlan%d", ether_setup);
1015         if (!net) {
1016                 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
1017                 goto fail;
1018         }
1019
1020         /* Allocate primary brcmf_info */
1021         drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC);
1022         if (!drvr_priv) {
1023                 brcmf_dbg(ERROR, "OOM - alloc brcmf_info\n");
1024                 goto fail;
1025         }
1026
1027         /*
1028          * Save the brcmf_info into the priv
1029          */
1030         memcpy(netdev_priv(net), &drvr_priv, sizeof(drvr_priv));
1031
1032         if (brcmf_add_if(drvr_priv, 0, net, net->name, NULL, 0, 0) ==
1033             BRCMF_BAD_IF)
1034                 goto fail;
1035
1036         net->netdev_ops = NULL;
1037         mutex_init(&drvr_priv->proto_block);
1038
1039         /* Link to info module */
1040         drvr_priv->pub.info = drvr_priv;
1041
1042         /* Link to bus module */
1043         drvr_priv->pub.bus = bus;
1044         drvr_priv->pub.hdrlen = bus_hdrlen;
1045
1046         /* Attach and link in the protocol */
1047         if (brcmf_proto_attach(&drvr_priv->pub) != 0) {
1048                 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
1049                 goto fail;
1050         }
1051
1052         /* Attach and link in the cfg80211 */
1053         drvr_priv->pub.config =
1054                         brcmf_cfg80211_attach(net,
1055                                               brcmf_bus_get_device(bus),
1056                                               &drvr_priv->pub);
1057         if (drvr_priv->pub.config == NULL) {
1058                 brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
1059                 goto fail;
1060         }
1061
1062         INIT_WORK(&drvr_priv->setmacaddr_work, _brcmf_set_mac_address);
1063         INIT_WORK(&drvr_priv->multicast_work, _brcmf_set_multicast_list);
1064
1065         /*
1066          * Save the brcmf_info into the priv
1067          */
1068         memcpy(netdev_priv(net), &drvr_priv, sizeof(drvr_priv));
1069
1070         return &drvr_priv->pub;
1071
1072 fail:
1073         if (net)
1074                 free_netdev(net);
1075         if (drvr_priv)
1076                 brcmf_detach(&drvr_priv->pub);
1077
1078         return NULL;
1079 }
1080
1081 int brcmf_bus_start(struct brcmf_pub *drvr)
1082 {
1083         int ret = -1;
1084         struct brcmf_info *drvr_priv = drvr->info;
1085         /* Room for "event_msgs" + '\0' + bitvec */
1086         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
1087
1088         brcmf_dbg(TRACE, "\n");
1089
1090         /* Bring up the bus */
1091         ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub, true);
1092         if (ret != 0) {
1093                 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
1094                 return ret;
1095         }
1096
1097         /* If bus is not ready, can't come up */
1098         if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) {
1099                 brcmf_dbg(ERROR, "failed bus is not ready\n");
1100                 return -ENODEV;
1101         }
1102
1103         brcmu_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1104                       iovbuf, sizeof(iovbuf));
1105         brcmf_proto_cdc_query_ioctl(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1106                                     sizeof(iovbuf));
1107         memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1108
1109         setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1110         setbit(drvr->eventmask, BRCMF_E_PRUNE);
1111         setbit(drvr->eventmask, BRCMF_E_AUTH);
1112         setbit(drvr->eventmask, BRCMF_E_REASSOC);
1113         setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1114         setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1115         setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1116         setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1117         setbit(drvr->eventmask, BRCMF_E_JOIN);
1118         setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1119         setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1120         setbit(drvr->eventmask, BRCMF_E_LINK);
1121         setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1122         setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1123         setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1124         setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1125         setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1126         setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1127
1128 /* enable dongle roaming event */
1129
1130         drvr->pktfilter_count = 1;
1131         /* Setup filter to allow only unicast */
1132         drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1133
1134         /* Bus is ready, do any protocol initialization */
1135         ret = brcmf_proto_init(&drvr_priv->pub);
1136         if (ret < 0)
1137                 return ret;
1138
1139         return 0;
1140 }
1141
1142 static struct net_device_ops brcmf_netdev_ops_pri = {
1143         .ndo_open = brcmf_netdev_open,
1144         .ndo_stop = brcmf_netdev_stop,
1145         .ndo_get_stats = brcmf_netdev_get_stats,
1146         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
1147         .ndo_start_xmit = brcmf_netdev_start_xmit,
1148         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
1149         .ndo_set_multicast_list = brcmf_netdev_set_multicast_list
1150 };
1151
1152 int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
1153 {
1154         struct brcmf_info *drvr_priv = drvr->info;
1155         struct net_device *net;
1156         u8 temp_addr[ETH_ALEN] = {
1157                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
1158
1159         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1160
1161         net = drvr_priv->iflist[ifidx]->net;
1162         net->netdev_ops = &brcmf_netdev_ops_pri;
1163
1164         /*
1165          * We have to use the primary MAC for virtual interfaces
1166          */
1167         if (ifidx != 0) {
1168                 /* for virtual interfaces use the primary MAC  */
1169                 memcpy(temp_addr, drvr_priv->pub.mac, ETH_ALEN);
1170
1171         }
1172
1173         if (ifidx == 1) {
1174                 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
1175                 /*  ACCESSPOINT INTERFACE CASE */
1176                 temp_addr[0] |= 0X02;   /* set bit 2 ,
1177                          - Locally Administered address  */
1178
1179         }
1180         net->hard_header_len = ETH_HLEN + drvr_priv->pub.hdrlen;
1181         net->ethtool_ops = &brcmf_ethtool_ops;
1182
1183         drvr_priv->pub.rxsz = net->mtu + net->hard_header_len +
1184                                 drvr_priv->pub.hdrlen;
1185
1186         memcpy(net->dev_addr, temp_addr, ETH_ALEN);
1187
1188         if (register_netdev(net) != 0) {
1189                 brcmf_dbg(ERROR, "couldn't register the net device\n");
1190                 goto fail;
1191         }
1192
1193         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", net->name);
1194
1195         return 0;
1196
1197 fail:
1198         net->netdev_ops = NULL;
1199         return -EBADE;
1200 }
1201
1202 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1203 {
1204         struct brcmf_info *drvr_priv;
1205
1206         brcmf_dbg(TRACE, "Enter\n");
1207
1208         if (drvr) {
1209                 drvr_priv = drvr->info;
1210                 if (drvr_priv) {
1211                         /* Stop the protocol module */
1212                         brcmf_proto_stop(&drvr_priv->pub);
1213
1214                         /* Stop the bus module */
1215                         brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus, true);
1216                 }
1217         }
1218 }
1219
1220 void brcmf_detach(struct brcmf_pub *drvr)
1221 {
1222         struct brcmf_info *drvr_priv;
1223
1224         brcmf_dbg(TRACE, "Enter\n");
1225
1226         if (drvr) {
1227                 drvr_priv = drvr->info;
1228                 if (drvr_priv) {
1229                         struct brcmf_if *ifp;
1230                         int i;
1231
1232                         for (i = 1; i < BRCMF_MAX_IFS; i++)
1233                                 if (drvr_priv->iflist[i])
1234                                         brcmf_del_if(drvr_priv, i);
1235
1236                         ifp = drvr_priv->iflist[0];
1237                         if (ifp->net->netdev_ops == &brcmf_netdev_ops_pri) {
1238                                 brcmf_netdev_stop(ifp->net);
1239                                 unregister_netdev(ifp->net);
1240                         }
1241
1242                         cancel_work_sync(&drvr_priv->setmacaddr_work);
1243                         cancel_work_sync(&drvr_priv->multicast_work);
1244
1245                         brcmf_bus_detach(drvr);
1246
1247                         if (drvr->prot)
1248                                 brcmf_proto_detach(drvr);
1249
1250                         brcmf_cfg80211_detach(drvr->config);
1251
1252                         free_netdev(ifp->net);
1253                         kfree(ifp);
1254                         kfree(drvr_priv);
1255                 }
1256         }
1257 }
1258
1259 static void __exit brcmf_module_cleanup(void)
1260 {
1261         brcmf_dbg(TRACE, "Enter\n");
1262
1263         brcmf_bus_unregister();
1264 }
1265
1266 static int __init brcmf_module_init(void)
1267 {
1268         int error;
1269
1270         brcmf_dbg(TRACE, "Enter\n");
1271
1272         error = brcmf_bus_register();
1273
1274         if (error) {
1275                 brcmf_dbg(ERROR, "brcmf_bus_register failed\n");
1276                 goto failed;
1277         }
1278         return 0;
1279
1280 failed:
1281         return -EINVAL;
1282 }
1283
1284 module_init(brcmf_module_init);
1285 module_exit(brcmf_module_cleanup);
1286
1287 int brcmf_os_proto_block(struct brcmf_pub *drvr)
1288 {
1289         struct brcmf_info *drvr_priv = drvr->info;
1290
1291         if (drvr_priv) {
1292                 mutex_lock(&drvr_priv->proto_block);
1293                 return 1;
1294         }
1295         return 0;
1296 }
1297
1298 int brcmf_os_proto_unblock(struct brcmf_pub *drvr)
1299 {
1300         struct brcmf_info *drvr_priv = drvr->info;
1301
1302         if (drvr_priv) {
1303                 mutex_unlock(&drvr_priv->proto_block);
1304                 return 1;
1305         }
1306
1307         return 0;
1308 }
1309
1310 static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv)
1311 {
1312         return atomic_read(&drvr_priv->pend_8021x_cnt);
1313 }
1314
1315 #define MAX_WAIT_FOR_8021X_TX   10
1316
1317 int brcmf_netdev_wait_pend8021x(struct net_device *dev)
1318 {
1319         struct brcmf_info *drvr_priv = *(struct brcmf_info **)netdev_priv(dev);
1320         int timeout = 10 * HZ / 1000;
1321         int ntimes = MAX_WAIT_FOR_8021X_TX;
1322         int pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1323
1324         while (ntimes && pend) {
1325                 if (pend) {
1326                         set_current_state(TASK_INTERRUPTIBLE);
1327                         schedule_timeout(timeout);
1328                         set_current_state(TASK_RUNNING);
1329                         ntimes--;
1330                 }
1331                 pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1332         }
1333         return pend;
1334 }
1335
1336 #ifdef BCMDBG
1337 int brcmf_write_to_file(struct brcmf_pub *drvr, u8 *buf, int size)
1338 {
1339         int ret = 0;
1340         struct file *fp;
1341         mm_segment_t old_fs;
1342         loff_t pos = 0;
1343
1344         /* change to KERNEL_DS address limit */
1345         old_fs = get_fs();
1346         set_fs(KERNEL_DS);
1347
1348         /* open file to write */
1349         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1350         if (!fp) {
1351                 brcmf_dbg(ERROR, "open file error\n");
1352                 ret = -1;
1353                 goto exit;
1354         }
1355
1356         /* Write buf to file */
1357         fp->f_op->write(fp, buf, size, &pos);
1358
1359 exit:
1360         /* free buf before return */
1361         kfree(buf);
1362         /* close file before return */
1363         if (fp)
1364                 filp_close(fp, current->files);
1365         /* restore previous address limit */
1366         set_fs(old_fs);
1367
1368         return ret;
1369 }
1370 #endif                          /* BCMDBG */