drivers/net/wireless/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 <linux/module.h>
  35 #include <net/cfg80211.h>
  36 #include <net/rtnetlink.h>
  37 #include <defs.h>
  38 #include <brcmu_utils.h>
  39 #include <brcmu_wifi.h>
  40
  41 #include "dhd.h"
  42 #include "dhd_bus.h"
  43 #include "dhd_proto.h"
  44 #include "dhd_dbg.h"
  45 #include "wl_cfg80211.h"
  46 #include "bcmchip.h"
  47
  48 MODULE_AUTHOR("Broadcom Corporation");
  49 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
  50 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
  51 MODULE_LICENSE("Dual BSD/GPL");
  52
  53
  54 /* Interface control information */
  55 struct brcmf_if {
  56         struct brcmf_info *info;        /* back pointer to brcmf_info */
  57         /* OS/stack specifics */
  58         struct net_device *ndev;
  59         struct net_device_stats stats;
  60         int idx;                /* iface idx in dongle */
  61         int state;              /* interface state */
  62         u8 mac_addr[ETH_ALEN];  /* assigned MAC address */
  63 };
  64
  65 /* Local private structure (extension of pub) */
  66 struct brcmf_info {
  67         struct brcmf_pub pub;
  68
  69         /* OS/stack specifics */
  70         struct brcmf_if *iflist[BRCMF_MAX_IFS];
  71
  72         struct mutex proto_block;
  73
  74         struct work_struct setmacaddr_work;
  75         struct work_struct multicast_work;
  76         u8 macvalue[ETH_ALEN];
  77         atomic_t pend_8021x_cnt;
  78 };
  79
  80 /* Error bits */
  81 module_param(brcmf_msg_level, int, 0);
  82
  83
  84 static int brcmf_net2idx(struct brcmf_info *drvr_priv, struct net_device *ndev)
  85 {
  86         int i = 0;
  87
  88         while (i < BRCMF_MAX_IFS) {
  89                 if (drvr_priv->iflist[i] && drvr_priv->iflist[i]->ndev == ndev)
  90                         return i;
  91                 i++;
  92         }
  93
  94         return BRCMF_BAD_IF;
  95 }
  96
  97 int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name)
  98 {
  99         int i = BRCMF_MAX_IFS;
 100         struct brcmf_if *ifp;
 101
 102         if (name == NULL || *name == '\0')
 103                 return 0;
 104
 105         while (--i > 0) {
 106                 ifp = drvr_priv->iflist[i];
 107                 if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ))
 108                         break;
 109         }
 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]->ndev)
 131                 return drvr_priv->iflist[ifidx]->ndev->name;
 132
 133         return "<if_none>";
 134 }
 135
 136 static void _brcmf_set_multicast_list(struct work_struct *work)
 137 {
 138         struct net_device *ndev;
 139         struct netdev_hw_addr *ha;
 140         u32 dcmd_value, cnt;
 141         __le32 cnt_le;
 142         __le32 dcmd_le_value;
 143
 144         struct brcmf_dcmd dcmd;
 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         ndev = drvr_priv->iflist[0]->ndev;
 153         cnt = netdev_mc_count(ndev);
 154
 155         /* Determine initial value of allmulti flag */
 156         dcmd_value = (ndev->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                 return;
 164
 165         strcpy(bufp, "mcast_list");
 166         bufp += strlen("mcast_list") + 1;
 167
 168         cnt_le = cpu_to_le32(cnt);
 169         memcpy(bufp, &cnt_le, sizeof(cnt));
 170         bufp += sizeof(cnt_le);
 171
 172         netdev_for_each_mc_addr(ha, ndev) {
 173                 if (!cnt)
 174                         break;
 175                 memcpy(bufp, ha->addr, ETH_ALEN);
 176                 bufp += ETH_ALEN;
 177                 cnt--;
 178         }
 179
 180         memset(&dcmd, 0, sizeof(dcmd));
 181         dcmd.cmd = BRCMF_C_SET_VAR;
 182         dcmd.buf = buf;
 183         dcmd.len = buflen;
 184         dcmd.set = true;
 185
 186         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 187         if (ret < 0) {
 188                 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
 189                           brcmf_ifname(&drvr_priv->pub, 0), cnt);
 190                 dcmd_value = cnt ? true : dcmd_value;
 191         }
 192
 193         kfree(buf);
 194
 195         /* Now send the allmulti setting.  This is based on the setting in the
 196          * net_device flags, but might be modified above to be turned on if we
 197          * were trying to set some addresses and dongle rejected it...
 198          */
 199
 200         buflen = sizeof("allmulti") + sizeof(dcmd_value);
 201         buf = kmalloc(buflen, GFP_ATOMIC);
 202         if (!buf)
 203                 return;
 204
 205         dcmd_le_value = cpu_to_le32(dcmd_value);
 206
 207         if (!brcmf_c_mkiovar
 208             ("allmulti", (void *)&dcmd_le_value,
 209             sizeof(dcmd_le_value), buf, buflen)) {
 210                 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
 211                           brcmf_ifname(&drvr_priv->pub, 0),
 212                           (int)sizeof(dcmd_value), buflen);
 213                 kfree(buf);
 214                 return;
 215         }
 216
 217         memset(&dcmd, 0, sizeof(dcmd));
 218         dcmd.cmd = BRCMF_C_SET_VAR;
 219         dcmd.buf = buf;
 220         dcmd.len = buflen;
 221         dcmd.set = true;
 222
 223         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 224         if (ret < 0) {
 225                 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
 226                           brcmf_ifname(&drvr_priv->pub, 0),
 227                           le32_to_cpu(dcmd_le_value));
 228         }
 229
 230         kfree(buf);
 231
 232         /* Finally, pick up the PROMISC flag as well, like the NIC
 233                  driver does */
 234
 235         dcmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 236         dcmd_le_value = cpu_to_le32(dcmd_value);
 237
 238         memset(&dcmd, 0, sizeof(dcmd));
 239         dcmd.cmd = BRCMF_C_SET_PROMISC;
 240         dcmd.buf = &dcmd_le_value;
 241         dcmd.len = sizeof(dcmd_le_value);
 242         dcmd.set = true;
 243
 244         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 245         if (ret < 0) {
 246                 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
 247                           brcmf_ifname(&drvr_priv->pub, 0),
 248                           le32_to_cpu(dcmd_le_value));
 249         }
 250 }
 251
 252 static void
 253 _brcmf_set_mac_address(struct work_struct *work)
 254 {
 255         char buf[32];
 256         struct brcmf_dcmd dcmd;
 257         int ret;
 258
 259         struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
 260                                                     setmacaddr_work);
 261
 262         brcmf_dbg(TRACE, "enter\n");
 263         if (!brcmf_c_mkiovar("cur_etheraddr", (char *)drvr_priv->macvalue,
 264                            ETH_ALEN, buf, 32)) {
 265                 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
 266                           brcmf_ifname(&drvr_priv->pub, 0));
 267                 return;
 268         }
 269         memset(&dcmd, 0, sizeof(dcmd));
 270         dcmd.cmd = BRCMF_C_SET_VAR;
 271         dcmd.buf = buf;
 272         dcmd.len = 32;
 273         dcmd.set = true;
 274
 275         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 276         if (ret < 0)
 277                 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
 278                           brcmf_ifname(&drvr_priv->pub, 0));
 279         else
 280                 memcpy(drvr_priv->iflist[0]->ndev->dev_addr,
 281                        drvr_priv->macvalue, ETH_ALEN);
 282
 283         return;
 284 }
 285
 286 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 287 {
 288         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 289                                         netdev_priv(ndev);
 290         struct sockaddr *sa = (struct sockaddr *)addr;
 291         int ifidx;
 292
 293         ifidx = brcmf_net2idx(drvr_priv, ndev);
 294         if (ifidx == BRCMF_BAD_IF)
 295                 return -1;
 296
 297         memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN);
 298         schedule_work(&drvr_priv->setmacaddr_work);
 299         return 0;
 300 }
 301
 302 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 303 {
 304         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 305                                         netdev_priv(ndev);
 306         int ifidx;
 307
 308         ifidx = brcmf_net2idx(drvr_priv, ndev);
 309         if (ifidx == BRCMF_BAD_IF)
 310                 return;
 311
 312         schedule_work(&drvr_priv->multicast_work);
 313 }
 314
 315 int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
 316 {
 317         struct brcmf_info *drvr_priv = drvr->info;
 318
 319         /* Reject if down */
 320         if (!drvr->up || (drvr->busstate == BRCMF_BUS_DOWN))
 321                 return -ENODEV;
 322
 323         /* Update multicast statistic */
 324         if (pktbuf->len >= ETH_ALEN) {
 325                 u8 *pktdata = (u8 *) (pktbuf->data);
 326                 struct ethhdr *eh = (struct ethhdr *)pktdata;
 327
 328                 if (is_multicast_ether_addr(eh->h_dest))
 329                         drvr->tx_multicast++;
 330                 if (ntohs(eh->h_proto) == ETH_P_PAE)
 331                         atomic_inc(&drvr_priv->pend_8021x_cnt);
 332         }
 333
 334         /* If the protocol uses a data header, apply it */
 335         brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
 336
 337         /* Use bus module to send data frame */
 338         return brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf);
 339 }
 340
 341 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 342 {
 343         int ret;
 344         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 345                                         netdev_priv(ndev);
 346         int ifidx;
 347
 348         brcmf_dbg(TRACE, "Enter\n");
 349
 350         /* Reject if down */
 351         if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) {
 352                 brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n",
 353                           drvr_priv->pub.up, drvr_priv->pub.busstate);
 354                 netif_stop_queue(ndev);
 355                 return -ENODEV;
 356         }
 357
 358         ifidx = brcmf_net2idx(drvr_priv, ndev);
 359         if (ifidx == BRCMF_BAD_IF) {
 360                 brcmf_dbg(ERROR, "bad ifidx %d\n", ifidx);
 361                 netif_stop_queue(ndev);
 362                 return -ENODEV;
 363         }
 364
 365         /* Make sure there's enough room for any header */
 366         if (skb_headroom(skb) < drvr_priv->pub.hdrlen) {
 367                 struct sk_buff *skb2;
 368
 369                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 370                           brcmf_ifname(&drvr_priv->pub, ifidx));
 371                 drvr_priv->pub.tx_realloc++;
 372                 skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen);
 373                 dev_kfree_skb(skb);
 374                 skb = skb2;
 375                 if (skb == NULL) {
 376                         brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
 377                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 378                         ret = -ENOMEM;
 379                         goto done;
 380                 }
 381         }
 382
 383         ret = brcmf_sendpkt(&drvr_priv->pub, ifidx, skb);
 384
 385 done:
 386         if (ret)
 387                 drvr_priv->pub.dstats.tx_dropped++;
 388         else
 389                 drvr_priv->pub.tx_packets++;
 390
 391         /* Return ok: we always eat the packet */
 392         return 0;
 393 }
 394
 395 void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state)
 396 {
 397         struct net_device *ndev;
 398         struct brcmf_info *drvr_priv = drvr->info;
 399
 400         brcmf_dbg(TRACE, "Enter\n");
 401
 402         drvr->txoff = state;
 403         ndev = drvr_priv->iflist[ifidx]->ndev;
 404         if (state == ON)
 405                 netif_stop_queue(ndev);
 406         else
 407                 netif_wake_queue(ndev);
 408 }
 409
 410 static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx,
 411                             void *pktdata, struct brcmf_event_msg *event,
 412                             void **data)
 413 {
 414         int bcmerror = 0;
 415
 416         bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data);
 417         if (bcmerror != 0)
 418                 return bcmerror;
 419
 420         if (drvr_priv->iflist[*ifidx]->ndev)
 421                 brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->ndev,
 422                                      event, *data);
 423
 424         return bcmerror;
 425 }
 426
 427 void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb,
 428                   int numpkt)
 429 {
 430         struct brcmf_info *drvr_priv = drvr->info;
 431         unsigned char *eth;
 432         uint len;
 433         void *data;
 434         struct sk_buff *pnext, *save_pktbuf;
 435         int i;
 436         struct brcmf_if *ifp;
 437         struct brcmf_event_msg event;
 438
 439         brcmf_dbg(TRACE, "Enter\n");
 440
 441         save_pktbuf = skb;
 442
 443         for (i = 0; skb && i < numpkt; i++, skb = pnext) {
 444
 445                 pnext = skb->next;
 446                 skb->next = NULL;
 447
 448                 /* Get the protocol, maintain skb around eth_type_trans()
 449                  * The main reason for this hack is for the limitation of
 450                  * Linux 2.4 where 'eth_type_trans' uses the
 451                  * 'net->hard_header_len'
 452                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 453                  * coping of the packet coming from the network stack to add
 454                  * BDC, Hardware header etc, during network interface
 455                  * registration
 456                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 457                  * required
 458                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 459                  */
 460                 eth = skb->data;
 461                 len = skb->len;
 462
 463                 ifp = drvr_priv->iflist[ifidx];
 464                 if (ifp == NULL)
 465                         ifp = drvr_priv->iflist[0];
 466
 467                 skb->dev = ifp->ndev;
 468                 skb->protocol = eth_type_trans(skb, skb->dev);
 469
 470                 if (skb->pkt_type == PACKET_MULTICAST)
 471                         drvr_priv->pub.rx_multicast++;
 472
 473                 skb->data = eth;
 474                 skb->len = len;
 475
 476                 /* Strip header, count, deliver upward */
 477                 skb_pull(skb, ETH_HLEN);
 478
 479                 /* Process special event packets and then discard them */
 480                 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
 481                         brcmf_host_event(drvr_priv, &ifidx,
 482                                           skb_mac_header(skb),
 483                                           &event, &data);
 484
 485                 if (drvr_priv->iflist[ifidx] &&
 486                     !drvr_priv->iflist[ifidx]->state)
 487                         ifp = drvr_priv->iflist[ifidx];
 488
 489                 if (ifp->ndev)
 490                         ifp->ndev->last_rx = jiffies;
 491
 492                 drvr->dstats.rx_bytes += skb->len;
 493                 drvr->rx_packets++;     /* Local count */
 494
 495                 if (in_interrupt())
 496                         netif_rx(skb);
 497                 else
 498                         /* If the receive is not processed inside an ISR,
 499                          * the softirqd must be woken explicitly to service
 500                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 501                          * by netif_rx_ni(), but in earlier kernels, we need
 502                          * to do it manually.
 503                          */
 504                         netif_rx_ni(skb);
 505         }
 506 }
 507
 508 void brcmf_txcomplete(struct brcmf_pub *drvr, struct sk_buff *txp, bool success)
 509 {
 510         uint ifidx;
 511         struct brcmf_info *drvr_priv = drvr->info;
 512         struct ethhdr *eh;
 513         u16 type;
 514
 515         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 516
 517         eh = (struct ethhdr *)(txp->data);
 518         type = ntohs(eh->h_proto);
 519
 520         if (type == ETH_P_PAE)
 521                 atomic_dec(&drvr_priv->pend_8021x_cnt);
 522
 523 }
 524
 525 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 526 {
 527         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 528                                         netdev_priv(ndev);
 529         struct brcmf_if *ifp;
 530         int ifidx;
 531
 532         brcmf_dbg(TRACE, "Enter\n");
 533
 534         ifidx = brcmf_net2idx(drvr_priv, ndev);
 535         if (ifidx == BRCMF_BAD_IF)
 536                 return NULL;
 537
 538         ifp = drvr_priv->iflist[ifidx];
 539
 540         if (drvr_priv->pub.up)
 541                 /* Use the protocol to get dongle stats */
 542                 brcmf_proto_dstats(&drvr_priv->pub);
 543
 544         /* Copy dongle stats to net device stats */
 545         ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets;
 546         ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets;
 547         ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes;
 548         ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes;
 549         ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors;
 550         ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors;
 551         ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped;
 552         ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped;
 553         ifp->stats.multicast = drvr_priv->pub.dstats.multicast;
 554
 555         return &ifp->stats;
 556 }
 557
 558 /* Retrieve current toe component enables, which are kept
 559          as a bitmap in toe_ol iovar */
 560 static int brcmf_toe_get(struct brcmf_info *drvr_priv, int ifidx, u32 *toe_ol)
 561 {
 562         struct brcmf_dcmd dcmd;
 563         __le32 toe_le;
 564         char buf[32];
 565         int ret;
 566
 567         memset(&dcmd, 0, sizeof(dcmd));
 568
 569         dcmd.cmd = BRCMF_C_GET_VAR;
 570         dcmd.buf = buf;
 571         dcmd.len = (uint) sizeof(buf);
 572         dcmd.set = false;
 573
 574         strcpy(buf, "toe_ol");
 575         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 576         if (ret < 0) {
 577                 /* Check for older dongle image that doesn't support toe_ol */
 578                 if (ret == -EIO) {
 579                         brcmf_dbg(ERROR, "%s: toe not supported by device\n",
 580                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 581                         return -EOPNOTSUPP;
 582                 }
 583
 584                 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
 585                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 586                 return ret;
 587         }
 588
 589         memcpy(&toe_le, buf, sizeof(u32));
 590         *toe_ol = le32_to_cpu(toe_le);
 591         return 0;
 592 }
 593
 594 /* Set current toe component enables in toe_ol iovar,
 595          and set toe global enable iovar */
 596 static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol)
 597 {
 598         struct brcmf_dcmd dcmd;
 599         char buf[32];
 600         int ret;
 601         __le32 toe_le = cpu_to_le32(toe_ol);
 602
 603         memset(&dcmd, 0, sizeof(dcmd));
 604
 605         dcmd.cmd = BRCMF_C_SET_VAR;
 606         dcmd.buf = buf;
 607         dcmd.len = (uint) sizeof(buf);
 608         dcmd.set = true;
 609
 610         /* Set toe_ol as requested */
 611         strcpy(buf, "toe_ol");
 612         memcpy(&buf[sizeof("toe_ol")], &toe_le, sizeof(u32));
 613
 614         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 615         if (ret < 0) {
 616                 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
 617                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 618                 return ret;
 619         }
 620
 621         /* Enable toe globally only if any components are enabled. */
 622         toe_le = cpu_to_le32(toe_ol != 0);
 623
 624         strcpy(buf, "toe");
 625         memcpy(&buf[sizeof("toe")], &toe_le, sizeof(u32));
 626
 627         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 628         if (ret < 0) {
 629                 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
 630                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 631                 return ret;
 632         }
 633
 634         return 0;
 635 }
 636
 637 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 638                                     struct ethtool_drvinfo *info)
 639 {
 640         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 641                                         netdev_priv(ndev);
 642
 643         sprintf(info->driver, KBUILD_MODNAME);
 644         sprintf(info->version, "%lu", drvr_priv->pub.drv_version);
 645         sprintf(info->fw_version, "%s", BCM4329_FW_NAME);
 646         sprintf(info->bus_info, "%s",
 647                 dev_name(brcmf_bus_get_device(drvr_priv->pub.bus)));
 648 }
 649
 650 static struct ethtool_ops brcmf_ethtool_ops = {
 651         .get_drvinfo = brcmf_ethtool_get_drvinfo
 652 };
 653
 654 static int brcmf_ethtool(struct brcmf_info *drvr_priv, void __user *uaddr)
 655 {
 656         struct ethtool_drvinfo info;
 657         char drvname[sizeof(info.driver)];
 658         u32 cmd;
 659         struct ethtool_value edata;
 660         u32 toe_cmpnt, csum_dir;
 661         int ret;
 662
 663         brcmf_dbg(TRACE, "Enter\n");
 664
 665         /* all ethtool calls start with a cmd word */
 666         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 667                 return -EFAULT;
 668
 669         switch (cmd) {
 670         case ETHTOOL_GDRVINFO:
 671                 /* Copy out any request driver name */
 672                 if (copy_from_user(&info, uaddr, sizeof(info)))
 673                         return -EFAULT;
 674                 strncpy(drvname, info.driver, sizeof(info.driver));
 675                 drvname[sizeof(info.driver) - 1] = '\0';
 676
 677                 /* clear struct for return */
 678                 memset(&info, 0, sizeof(info));
 679                 info.cmd = cmd;
 680
 681                 /* if requested, identify ourselves */
 682                 if (strcmp(drvname, "?dhd") == 0) {
 683                         sprintf(info.driver, "dhd");
 684                         strcpy(info.version, BRCMF_VERSION_STR);
 685                 }
 686
 687                 /* otherwise, require dongle to be up */
 688                 else if (!drvr_priv->pub.up) {
 689                         brcmf_dbg(ERROR, "dongle is not up\n");
 690                         return -ENODEV;
 691                 }
 692
 693                 /* finally, report dongle driver type */
 694                 else if (drvr_priv->pub.iswl)
 695                         sprintf(info.driver, "wl");
 696                 else
 697                         sprintf(info.driver, "xx");
 698
 699                 sprintf(info.version, "%lu", drvr_priv->pub.drv_version);
 700                 if (copy_to_user(uaddr, &info, sizeof(info)))
 701                         return -EFAULT;
 702                 brcmf_dbg(CTL, "given %*s, returning %s\n",
 703                           (int)sizeof(drvname), drvname, info.driver);
 704                 break;
 705
 706                 /* Get toe offload components from dongle */
 707         case ETHTOOL_GRXCSUM:
 708         case ETHTOOL_GTXCSUM:
 709                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 710                 if (ret < 0)
 711                         return ret;
 712
 713                 csum_dir =
 714                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 715
 716                 edata.cmd = cmd;
 717                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 718
 719                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 720                         return -EFAULT;
 721                 break;
 722
 723                 /* Set toe offload components in dongle */
 724         case ETHTOOL_SRXCSUM:
 725         case ETHTOOL_STXCSUM:
 726                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 727                         return -EFAULT;
 728
 729                 /* Read the current settings, update and write back */
 730                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 731                 if (ret < 0)
 732                         return ret;
 733
 734                 csum_dir =
 735                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 736
 737                 if (edata.data != 0)
 738                         toe_cmpnt |= csum_dir;
 739                 else
 740                         toe_cmpnt &= ~csum_dir;
 741
 742                 ret = brcmf_toe_set(drvr_priv, 0, toe_cmpnt);
 743                 if (ret < 0)
 744                         return ret;
 745
 746                 /* If setting TX checksum mode, tell Linux the new mode */
 747                 if (cmd == ETHTOOL_STXCSUM) {
 748                         if (edata.data)
 749                                 drvr_priv->iflist[0]->ndev->features |=
 750                                     NETIF_F_IP_CSUM;
 751                         else
 752                                 drvr_priv->iflist[0]->ndev->features &=
 753                                     ~NETIF_F_IP_CSUM;
 754                 }
 755
 756                 break;
 757
 758         default:
 759                 return -EOPNOTSUPP;
 760         }
 761
 762         return 0;
 763 }
 764
 765 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 766                                     int cmd)
 767 {
 768         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 769                                         netdev_priv(ndev);
 770         int ifidx;
 771
 772         ifidx = brcmf_net2idx(drvr_priv, ndev);
 773         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifidx, cmd);
 774
 775         if (ifidx == BRCMF_BAD_IF)
 776                 return -1;
 777
 778         if (cmd == SIOCETHTOOL)
 779                 return brcmf_ethtool(drvr_priv, ifr->ifr_data);
 780
 781         return -EOPNOTSUPP;
 782 }
 783
 784 /* called only from within this driver. Sends a command to the dongle. */
 785 s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len)
 786 {
 787         struct brcmf_dcmd dcmd;
 788         s32 err = 0;
 789         int buflen = 0;
 790         bool is_set_key_cmd;
 791         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 792                                         netdev_priv(ndev);
 793         int ifidx;
 794
 795         memset(&dcmd, 0, sizeof(dcmd));
 796         dcmd.cmd = cmd;
 797         dcmd.buf = arg;
 798         dcmd.len = len;
 799
 800         ifidx = brcmf_net2idx(drvr_priv, ndev);
 801
 802         if (dcmd.buf != NULL)
 803                 buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN);
 804
 805         /* send to dongle (must be up, and wl) */
 806         if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) {
 807                 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
 808                 err = -EIO;
 809                 goto done;
 810         }
 811
 812         if (!drvr_priv->pub.iswl) {
 813                 err = -EIO;
 814                 goto done;
 815         }
 816
 817         /*
 818          * Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and
 819          * set key CMD to prevent M4 encryption.
 820          */
 821         is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) ||
 822                           ((dcmd.cmd == BRCMF_C_SET_VAR) &&
 823                            !(strncmp("wsec_key", dcmd.buf, 9))) ||
 824                           ((dcmd.cmd == BRCMF_C_SET_VAR) &&
 825                            !(strncmp("bsscfg:wsec_key", dcmd.buf, 15))));
 826         if (is_set_key_cmd)
 827                 brcmf_netdev_wait_pend8021x(ndev);
 828
 829         err = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, buflen);
 830
 831 done:
 832         if (err > 0)
 833                 err = 0;
 834
 835         return err;
 836 }
 837
 838 static int brcmf_netdev_stop(struct net_device *ndev)
 839 {
 840         struct brcmf_pub *drvr = *(struct brcmf_pub **) netdev_priv(ndev);
 841
 842         brcmf_dbg(TRACE, "Enter\n");
 843         brcmf_cfg80211_down(drvr->config);
 844         if (drvr->up == 0)
 845                 return 0;
 846
 847         /* Set state and stop OS transmissions */
 848         drvr->up = 0;
 849         netif_stop_queue(ndev);
 850
 851         return 0;
 852 }
 853
 854 static int brcmf_netdev_open(struct net_device *ndev)
 855 {
 856         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 857                                         netdev_priv(ndev);
 858         u32 toe_ol;
 859         int ifidx = brcmf_net2idx(drvr_priv, ndev);
 860         s32 ret = 0;
 861
 862         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
 863
 864         if (ifidx == 0) {       /* do it only for primary eth0 */
 865
 866                 /* try to bring up bus */
 867                 ret = brcmf_bus_start(&drvr_priv->pub);
 868                 if (ret != 0) {
 869                         brcmf_dbg(ERROR, "failed with code %d\n", ret);
 870                         return -1;
 871                 }
 872                 atomic_set(&drvr_priv->pend_8021x_cnt, 0);
 873
 874                 memcpy(ndev->dev_addr, drvr_priv->pub.mac, ETH_ALEN);
 875
 876                 /* Get current TOE mode from dongle */
 877                 if (brcmf_toe_get(drvr_priv, ifidx, &toe_ol) >= 0
 878                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
 879                         drvr_priv->iflist[ifidx]->ndev->features |=
 880                                 NETIF_F_IP_CSUM;
 881                 else
 882                         drvr_priv->iflist[ifidx]->ndev->features &=
 883                                 ~NETIF_F_IP_CSUM;
 884         }
 885         /* Allow transmit calls */
 886         netif_start_queue(ndev);
 887         drvr_priv->pub.up = 1;
 888         if (brcmf_cfg80211_up(drvr_priv->pub.config)) {
 889                 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
 890                 return -1;
 891         }
 892
 893         return ret;
 894 }
 895
 896 int
 897 brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, struct net_device *ndev,
 898              char *name, u8 *mac_addr, u32 flags, u8 bssidx)
 899 {
 900         struct brcmf_if *ifp;
 901         int ret = 0, err = 0;
 902
 903         brcmf_dbg(TRACE, "idx %d, handle->%p\n", ifidx, ndev);
 904
 905         ifp = drvr_priv->iflist[ifidx];
 906         if (!ifp) {
 907                 ifp = kmalloc(sizeof(struct brcmf_if), GFP_ATOMIC);
 908                 if (!ifp)
 909                         return -ENOMEM;
 910         }
 911
 912         memset(ifp, 0, sizeof(struct brcmf_if));
 913         ifp->info = drvr_priv;
 914         drvr_priv->iflist[ifidx] = ifp;
 915         if (mac_addr != NULL)
 916                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
 917
 918         if (ndev == NULL) {
 919                 ifp->state = BRCMF_E_IF_ADD;
 920                 ifp->idx = ifidx;
 921                 /*
 922                  * Delete the existing interface before overwriting it
 923                  * in case we missed the BRCMF_E_IF_DEL event.
 924                  */
 925                 if (ifp->ndev != NULL) {
 926                         brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
 927                                   ifp->ndev->name);
 928                         netif_stop_queue(ifp->ndev);
 929                         unregister_netdev(ifp->ndev);
 930                         free_netdev(ifp->ndev);
 931                 }
 932
 933                 /* Allocate netdev, including space for private structure */
 934                 ifp->ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d",
 935                                          ether_setup);
 936                 if (!ifp->ndev) {
 937                         brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
 938                         ret = -ENOMEM;
 939                 }
 940
 941                 if (ret == 0) {
 942                         memcpy(netdev_priv(ifp->ndev), &drvr_priv,
 943                                sizeof(drvr_priv));
 944                         err = brcmf_net_attach(&drvr_priv->pub, ifp->idx);
 945                         if (err != 0) {
 946                                 brcmf_dbg(ERROR, "brcmf_net_attach failed, err %d\n",
 947                                           err);
 948                                 ret = -EOPNOTSUPP;
 949                         } else {
 950                                 brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
 951                                           current->pid, ifp->ndev->name);
 952                                 ifp->state = 0;
 953                         }
 954                 }
 955
 956                 if (ret < 0) {
 957                         if (ifp->ndev)
 958                                 free_netdev(ifp->ndev);
 959
 960                         drvr_priv->iflist[ifp->idx] = NULL;
 961                         kfree(ifp);
 962                 }
 963         } else
 964                 ifp->ndev = ndev;
 965
 966         return 0;
 967 }
 968
 969 void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx)
 970 {
 971         struct brcmf_if *ifp;
 972
 973         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 974
 975         ifp = drvr_priv->iflist[ifidx];
 976         if (!ifp) {
 977                 brcmf_dbg(ERROR, "Null interface\n");
 978                 return;
 979         }
 980
 981         ifp->state = BRCMF_E_IF_DEL;
 982         ifp->idx = ifidx;
 983         if (ifp->ndev != NULL) {
 984                 netif_stop_queue(ifp->ndev);
 985                 unregister_netdev(ifp->ndev);
 986                 free_netdev(ifp->ndev);
 987                 drvr_priv->iflist[ifidx] = NULL;
 988                 kfree(ifp);
 989         }
 990 }
 991
 992 struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen)
 993 {
 994         struct brcmf_info *drvr_priv = NULL;
 995         struct net_device *ndev;
 996
 997         brcmf_dbg(TRACE, "Enter\n");
 998
 999         /* Allocate netdev, including space for private structure */
1000         ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d", ether_setup);
1001         if (!ndev) {
1002                 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
1003                 goto fail;
1004         }
1005
1006         /* Allocate primary brcmf_info */
1007         drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC);
1008         if (!drvr_priv)
1009                 goto fail;
1010
1011         /*
1012          * Save the brcmf_info into the priv
1013          */
1014         memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1015
1016         if (brcmf_add_if(drvr_priv, 0, ndev, ndev->name, NULL, 0, 0) ==
1017             BRCMF_BAD_IF)
1018                 goto fail;
1019
1020         ndev->netdev_ops = NULL;
1021         mutex_init(&drvr_priv->proto_block);
1022
1023         /* Link to info module */
1024         drvr_priv->pub.info = drvr_priv;
1025
1026         /* Link to bus module */
1027         drvr_priv->pub.bus = bus;
1028         drvr_priv->pub.hdrlen = bus_hdrlen;
1029
1030         /* Attach and link in the protocol */
1031         if (brcmf_proto_attach(&drvr_priv->pub) != 0) {
1032                 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
1033                 goto fail;
1034         }
1035
1036         /* Attach and link in the cfg80211 */
1037         drvr_priv->pub.config =
1038                         brcmf_cfg80211_attach(ndev,
1039                                               brcmf_bus_get_device(bus),
1040                                               &drvr_priv->pub);
1041         if (drvr_priv->pub.config == NULL) {
1042                 brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
1043                 goto fail;
1044         }
1045
1046         INIT_WORK(&drvr_priv->setmacaddr_work, _brcmf_set_mac_address);
1047         INIT_WORK(&drvr_priv->multicast_work, _brcmf_set_multicast_list);
1048
1049         /*
1050          * Save the brcmf_info into the priv
1051          */
1052         memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1053
1054         return &drvr_priv->pub;
1055
1056 fail:
1057         if (ndev)
1058                 free_netdev(ndev);
1059         if (drvr_priv)
1060                 brcmf_detach(&drvr_priv->pub);
1061
1062         return NULL;
1063 }
1064
1065 int brcmf_bus_start(struct brcmf_pub *drvr)
1066 {
1067         int ret = -1;
1068         struct brcmf_info *drvr_priv = drvr->info;
1069         /* Room for "event_msgs" + '\0' + bitvec */
1070         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
1071
1072         brcmf_dbg(TRACE, "\n");
1073
1074         /* Bring up the bus */
1075         ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub);
1076         if (ret != 0) {
1077                 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
1078                 return ret;
1079         }
1080
1081         /* If bus is not ready, can't come up */
1082         if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) {
1083                 brcmf_dbg(ERROR, "failed bus is not ready\n");
1084                 return -ENODEV;
1085         }
1086
1087         brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1088                       iovbuf, sizeof(iovbuf));
1089         brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1090                                     sizeof(iovbuf));
1091         memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1092
1093         setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1094         setbit(drvr->eventmask, BRCMF_E_PRUNE);
1095         setbit(drvr->eventmask, BRCMF_E_AUTH);
1096         setbit(drvr->eventmask, BRCMF_E_REASSOC);
1097         setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1098         setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1099         setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1100         setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1101         setbit(drvr->eventmask, BRCMF_E_JOIN);
1102         setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1103         setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1104         setbit(drvr->eventmask, BRCMF_E_LINK);
1105         setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1106         setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1107         setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1108         setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1109         setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1110         setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1111
1112 /* enable dongle roaming event */
1113
1114         drvr->pktfilter_count = 1;
1115         /* Setup filter to allow only unicast */
1116         drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1117
1118         /* Bus is ready, do any protocol initialization */
1119         ret = brcmf_proto_init(&drvr_priv->pub);
1120         if (ret < 0)
1121                 return ret;
1122
1123         return 0;
1124 }
1125
1126 static struct net_device_ops brcmf_netdev_ops_pri = {
1127         .ndo_open = brcmf_netdev_open,
1128         .ndo_stop = brcmf_netdev_stop,
1129         .ndo_get_stats = brcmf_netdev_get_stats,
1130         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
1131         .ndo_start_xmit = brcmf_netdev_start_xmit,
1132         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
1133         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
1134 };
1135
1136 int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
1137 {
1138         struct brcmf_info *drvr_priv = drvr->info;
1139         struct net_device *ndev;
1140         u8 temp_addr[ETH_ALEN] = {
1141                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
1142
1143         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1144
1145         ndev = drvr_priv->iflist[ifidx]->ndev;
1146         ndev->netdev_ops = &brcmf_netdev_ops_pri;
1147
1148         /*
1149          * We have to use the primary MAC for virtual interfaces
1150          */
1151         if (ifidx != 0) {
1152                 /* for virtual interfaces use the primary MAC  */
1153                 memcpy(temp_addr, drvr_priv->pub.mac, ETH_ALEN);
1154
1155         }
1156
1157         if (ifidx == 1) {
1158                 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
1159                 /*  ACCESSPOINT INTERFACE CASE */
1160                 temp_addr[0] |= 0X02;   /* set bit 2 ,
1161                          - Locally Administered address  */
1162
1163         }
1164         ndev->hard_header_len = ETH_HLEN + drvr_priv->pub.hdrlen;
1165         ndev->ethtool_ops = &brcmf_ethtool_ops;
1166
1167         drvr_priv->pub.rxsz = ndev->mtu + ndev->hard_header_len +
1168                               drvr_priv->pub.hdrlen;
1169
1170         memcpy(ndev->dev_addr, temp_addr, ETH_ALEN);
1171
1172         if (register_netdev(ndev) != 0) {
1173                 brcmf_dbg(ERROR, "couldn't register the net device\n");
1174                 goto fail;
1175         }
1176
1177         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
1178
1179         return 0;
1180
1181 fail:
1182         ndev->netdev_ops = NULL;
1183         return -EBADE;
1184 }
1185
1186 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1187 {
1188         struct brcmf_info *drvr_priv;
1189
1190         brcmf_dbg(TRACE, "Enter\n");
1191
1192         if (drvr) {
1193                 drvr_priv = drvr->info;
1194                 if (drvr_priv) {
1195                         /* Stop the protocol module */
1196                         brcmf_proto_stop(&drvr_priv->pub);
1197
1198                         /* Stop the bus module */
1199                         brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus);
1200                 }
1201         }
1202 }
1203
1204 void brcmf_detach(struct brcmf_pub *drvr)
1205 {
1206         struct brcmf_info *drvr_priv;
1207
1208         brcmf_dbg(TRACE, "Enter\n");
1209
1210         if (drvr) {
1211                 drvr_priv = drvr->info;
1212                 if (drvr_priv) {
1213                         struct brcmf_if *ifp;
1214                         int i;
1215
1216                         for (i = 1; i < BRCMF_MAX_IFS; i++)
1217                                 if (drvr_priv->iflist[i])
1218                                         brcmf_del_if(drvr_priv, i);
1219
1220                         ifp = drvr_priv->iflist[0];
1221                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
1222                                 rtnl_lock();
1223                                 brcmf_netdev_stop(ifp->ndev);
1224                                 rtnl_unlock();
1225                                 unregister_netdev(ifp->ndev);
1226                         }
1227
1228                         cancel_work_sync(&drvr_priv->setmacaddr_work);
1229                         cancel_work_sync(&drvr_priv->multicast_work);
1230
1231                         brcmf_bus_detach(drvr);
1232
1233                         if (drvr->prot)
1234                                 brcmf_proto_detach(drvr);
1235
1236                         brcmf_cfg80211_detach(drvr->config);
1237
1238                         free_netdev(ifp->ndev);
1239                         kfree(ifp);
1240                         kfree(drvr_priv);
1241                 }
1242         }
1243 }
1244
1245 static void __exit brcmf_module_cleanup(void)
1246 {
1247         brcmf_dbg(TRACE, "Enter\n");
1248
1249         brcmf_bus_unregister();
1250 }
1251
1252 static int __init brcmf_module_init(void)
1253 {
1254         int error;
1255
1256         brcmf_dbg(TRACE, "Enter\n");
1257
1258         error = brcmf_bus_register();
1259
1260         if (error) {
1261                 brcmf_dbg(ERROR, "brcmf_bus_register failed\n");
1262                 goto failed;
1263         }
1264         return 0;
1265
1266 failed:
1267         return -EINVAL;
1268 }
1269
1270 module_init(brcmf_module_init);
1271 module_exit(brcmf_module_cleanup);
1272
1273 int brcmf_os_proto_block(struct brcmf_pub *drvr)
1274 {
1275         struct brcmf_info *drvr_priv = drvr->info;
1276
1277         if (drvr_priv) {
1278                 mutex_lock(&drvr_priv->proto_block);
1279                 return 1;
1280         }
1281         return 0;
1282 }
1283
1284 int brcmf_os_proto_unblock(struct brcmf_pub *drvr)
1285 {
1286         struct brcmf_info *drvr_priv = drvr->info;
1287
1288         if (drvr_priv) {
1289                 mutex_unlock(&drvr_priv->proto_block);
1290                 return 1;
1291         }
1292
1293         return 0;
1294 }
1295
1296 static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv)
1297 {
1298         return atomic_read(&drvr_priv->pend_8021x_cnt);
1299 }
1300
1301 #define MAX_WAIT_FOR_8021X_TX   10
1302
1303 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1304 {
1305         struct brcmf_info *drvr_priv = *(struct brcmf_info **)netdev_priv(ndev);
1306         int timeout = 10 * HZ / 1000;
1307         int ntimes = MAX_WAIT_FOR_8021X_TX;
1308         int pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1309
1310         while (ntimes && pend) {
1311                 if (pend) {
1312                         set_current_state(TASK_INTERRUPTIBLE);
1313                         schedule_timeout(timeout);
1314                         set_current_state(TASK_RUNNING);
1315                         ntimes--;
1316                 }
1317                 pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1318         }
1319         return pend;
1320 }
1321
1322 #ifdef BCMDBG
1323 int brcmf_write_to_file(struct brcmf_pub *drvr, const u8 *buf, int size)
1324 {
1325         int ret = 0;
1326         struct file *fp;
1327         mm_segment_t old_fs;
1328         loff_t pos = 0;
1329
1330         /* change to KERNEL_DS address limit */
1331         old_fs = get_fs();
1332         set_fs(KERNEL_DS);
1333
1334         /* open file to write */
1335         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1336         if (!fp) {
1337                 brcmf_dbg(ERROR, "open file error\n");
1338                 ret = -1;
1339                 goto exit;
1340         }
1341
1342         /* Write buf to file */
1343         fp->f_op->write(fp, (char __user *)buf, size, &pos);
1344
1345 exit:
1346         /* free buf before return */
1347         kfree(buf);
1348         /* close file before return */
1349         if (fp)
1350                 filp_close(fp, current->files);
1351         /* restore previous address limit */
1352         set_fs(old_fs);
1353
1354         return ret;
1355 }
1356 #endif                          /* BCMDBG */