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 <net/cfg80211.h>
  35 #include <net/rtnetlink.h>
  36 #include <defs.h>
  37 #include <brcmu_utils.h>
  38 #include <brcmu_wifi.h>
  39
  40 #include "dhd.h"
  41 #include "dhd_bus.h"
  42 #include "dhd_proto.h"
  43 #include "dhd_dbg.h"
  44 #include "wl_cfg80211.h"
  45 #include "bcmchip.h"
  46
  47 MODULE_AUTHOR("Broadcom Corporation");
  48 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
  49 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
  50 MODULE_LICENSE("Dual BSD/GPL");
  51
  52
  53 /* Interface control information */
  54 struct brcmf_if {
  55         struct brcmf_info *info;        /* back pointer to brcmf_info */
  56         /* OS/stack specifics */
  57         struct net_device *ndev;
  58         struct net_device_stats stats;
  59         int idx;                /* iface idx in dongle */
  60         int state;              /* interface state */
  61         u8 mac_addr[ETH_ALEN];  /* assigned MAC address */
  62 };
  63
  64 /* Local private structure (extension of pub) */
  65 struct brcmf_info {
  66         struct brcmf_pub pub;
  67
  68         /* OS/stack specifics */
  69         struct brcmf_if *iflist[BRCMF_MAX_IFS];
  70
  71         struct mutex proto_block;
  72
  73         struct work_struct setmacaddr_work;
  74         struct work_struct multicast_work;
  75         u8 macvalue[ETH_ALEN];
  76         atomic_t pend_8021x_cnt;
  77 };
  78
  79 /* Error bits */
  80 module_param(brcmf_msg_level, int, 0);
  81
  82
  83 static int brcmf_net2idx(struct brcmf_info *drvr_priv, struct net_device *ndev)
  84 {
  85         int i = 0;
  86
  87         while (i < BRCMF_MAX_IFS) {
  88                 if (drvr_priv->iflist[i] && drvr_priv->iflist[i]->ndev == ndev)
  89                         return i;
  90                 i++;
  91         }
  92
  93         return BRCMF_BAD_IF;
  94 }
  95
  96 int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name)
  97 {
  98         int i = BRCMF_MAX_IFS;
  99         struct brcmf_if *ifp;
 100
 101         if (name == NULL || *name == '\0')
 102                 return 0;
 103
 104         while (--i > 0) {
 105                 ifp = drvr_priv->iflist[i];
 106                 if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ))
 107                         break;
 108         }
 109
 110         brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
 111
 112         return i;               /* default - the primary interface */
 113 }
 114
 115 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
 116 {
 117         struct brcmf_info *drvr_priv = drvr->info;
 118
 119         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
 120                 brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
 121                 return "<if_bad>";
 122         }
 123
 124         if (drvr_priv->iflist[ifidx] == NULL) {
 125                 brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
 126                 return "<if_null>";
 127         }
 128
 129         if (drvr_priv->iflist[ifidx]->ndev)
 130                 return drvr_priv->iflist[ifidx]->ndev->name;
 131
 132         return "<if_none>";
 133 }
 134
 135 static void _brcmf_set_multicast_list(struct work_struct *work)
 136 {
 137         struct net_device *ndev;
 138         struct netdev_hw_addr *ha;
 139         u32 allmulti, cnt;
 140         __le32 cnt_le;
 141         __le32 allmulti_le;
 142
 143         struct brcmf_dcmd dcmd;
 144         char *buf, *bufp;
 145         uint buflen;
 146         int ret;
 147
 148         struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
 149                                                     multicast_work);
 150
 151         ndev = drvr_priv->iflist[0]->ndev;
 152         cnt = netdev_mc_count(ndev);
 153
 154         /* Determine initial value of allmulti flag */
 155         allmulti = (ndev->flags & IFF_ALLMULTI) ? true : false;
 156
 157         /* Send down the multicast list first. */
 158
 159         buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
 160         bufp = buf = kmalloc(buflen, GFP_ATOMIC);
 161         if (!bufp)
 162                 return;
 163
 164         strcpy(bufp, "mcast_list");
 165         bufp += strlen("mcast_list") + 1;
 166
 167         cnt_le = cpu_to_le32(cnt);
 168         memcpy(bufp, &cnt_le, sizeof(cnt));
 169         bufp += sizeof(cnt_le);
 170
 171         netdev_for_each_mc_addr(ha, ndev) {
 172                 if (!cnt)
 173                         break;
 174                 memcpy(bufp, ha->addr, ETH_ALEN);
 175                 bufp += ETH_ALEN;
 176                 cnt--;
 177         }
 178
 179         memset(&dcmd, 0, sizeof(dcmd));
 180         dcmd.cmd = BRCMF_C_SET_VAR;
 181         dcmd.buf = buf;
 182         dcmd.len = buflen;
 183         dcmd.set = true;
 184
 185         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 186         if (ret < 0) {
 187                 brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
 188                           brcmf_ifname(&drvr_priv->pub, 0), cnt);
 189                 allmulti = cnt ? true : allmulti;
 190         }
 191
 192         kfree(buf);
 193
 194         /* Now send the allmulti setting.  This is based on the setting in the
 195          * net_device flags, but might be modified above to be turned on if we
 196          * were trying to set some addresses and dongle rejected it...
 197          */
 198
 199         buflen = sizeof("allmulti") + sizeof(allmulti);
 200         buf = kmalloc(buflen, GFP_ATOMIC);
 201         if (!buf)
 202                 return;
 203
 204         allmulti_le = cpu_to_le32(allmulti);
 205
 206         if (!brcmu_mkiovar
 207             ("allmulti", (void *)&allmulti_le,
 208             sizeof(allmulti_le), buf, buflen)) {
 209                 brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
 210                           brcmf_ifname(&drvr_priv->pub, 0),
 211                           (int)sizeof(allmulti), buflen);
 212                 kfree(buf);
 213                 return;
 214         }
 215
 216         memset(&dcmd, 0, sizeof(dcmd));
 217         dcmd.cmd = BRCMF_C_SET_VAR;
 218         dcmd.buf = buf;
 219         dcmd.len = buflen;
 220         dcmd.set = true;
 221
 222         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 223         if (ret < 0) {
 224                 brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
 225                           brcmf_ifname(&drvr_priv->pub, 0),
 226                           le32_to_cpu(allmulti_le));
 227         }
 228
 229         kfree(buf);
 230
 231         /* Finally, pick up the PROMISC flag as well, like the NIC
 232                  driver does */
 233
 234         allmulti = (ndev->flags & IFF_PROMISC) ? true : false;
 235         allmulti_le = cpu_to_le32(allmulti);
 236
 237         memset(&dcmd, 0, sizeof(dcmd));
 238         dcmd.cmd = BRCMF_C_SET_PROMISC;
 239         dcmd.buf = &allmulti_le;
 240         dcmd.len = sizeof(allmulti_le);
 241         dcmd.set = true;
 242
 243         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 244         if (ret < 0) {
 245                 brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
 246                           brcmf_ifname(&drvr_priv->pub, 0),
 247                           le32_to_cpu(allmulti_le));
 248         }
 249 }
 250
 251 static void
 252 _brcmf_set_mac_address(struct work_struct *work)
 253 {
 254         char buf[32];
 255         struct brcmf_dcmd dcmd;
 256         int ret;
 257
 258         struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info,
 259                                                     setmacaddr_work);
 260
 261         brcmf_dbg(TRACE, "enter\n");
 262         if (!brcmu_mkiovar("cur_etheraddr", (char *)drvr_priv->macvalue,
 263                            ETH_ALEN, buf, 32)) {
 264                 brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
 265                           brcmf_ifname(&drvr_priv->pub, 0));
 266                 return;
 267         }
 268         memset(&dcmd, 0, sizeof(dcmd));
 269         dcmd.cmd = BRCMF_C_SET_VAR;
 270         dcmd.buf = buf;
 271         dcmd.len = 32;
 272         dcmd.set = true;
 273
 274         ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len);
 275         if (ret < 0)
 276                 brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
 277                           brcmf_ifname(&drvr_priv->pub, 0));
 278         else
 279                 memcpy(drvr_priv->iflist[0]->ndev->dev_addr,
 280                        drvr_priv->macvalue, ETH_ALEN);
 281
 282         return;
 283 }
 284
 285 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 286 {
 287         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 288                                         netdev_priv(ndev);
 289         struct sockaddr *sa = (struct sockaddr *)addr;
 290         int ifidx;
 291
 292         ifidx = brcmf_net2idx(drvr_priv, ndev);
 293         if (ifidx == BRCMF_BAD_IF)
 294                 return -1;
 295
 296         memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN);
 297         schedule_work(&drvr_priv->setmacaddr_work);
 298         return 0;
 299 }
 300
 301 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 302 {
 303         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 304                                         netdev_priv(ndev);
 305         int ifidx;
 306
 307         ifidx = brcmf_net2idx(drvr_priv, ndev);
 308         if (ifidx == BRCMF_BAD_IF)
 309                 return;
 310
 311         schedule_work(&drvr_priv->multicast_work);
 312 }
 313
 314 int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
 315 {
 316         struct brcmf_info *drvr_priv = drvr->info;
 317
 318         /* Reject if down */
 319         if (!drvr->up || (drvr->busstate == BRCMF_BUS_DOWN))
 320                 return -ENODEV;
 321
 322         /* Update multicast statistic */
 323         if (pktbuf->len >= ETH_ALEN) {
 324                 u8 *pktdata = (u8 *) (pktbuf->data);
 325                 struct ethhdr *eh = (struct ethhdr *)pktdata;
 326
 327                 if (is_multicast_ether_addr(eh->h_dest))
 328                         drvr->tx_multicast++;
 329                 if (ntohs(eh->h_proto) == ETH_P_PAE)
 330                         atomic_inc(&drvr_priv->pend_8021x_cnt);
 331         }
 332
 333         /* If the protocol uses a data header, apply it */
 334         brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
 335
 336         /* Use bus module to send data frame */
 337         return brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf);
 338 }
 339
 340 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 341 {
 342         int ret;
 343         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 344                                         netdev_priv(ndev);
 345         int ifidx;
 346
 347         brcmf_dbg(TRACE, "Enter\n");
 348
 349         /* Reject if down */
 350         if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) {
 351                 brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n",
 352                           drvr_priv->pub.up, drvr_priv->pub.busstate);
 353                 netif_stop_queue(ndev);
 354                 return -ENODEV;
 355         }
 356
 357         ifidx = brcmf_net2idx(drvr_priv, ndev);
 358         if (ifidx == BRCMF_BAD_IF) {
 359                 brcmf_dbg(ERROR, "bad ifidx %d\n", ifidx);
 360                 netif_stop_queue(ndev);
 361                 return -ENODEV;
 362         }
 363
 364         /* Make sure there's enough room for any header */
 365         if (skb_headroom(skb) < drvr_priv->pub.hdrlen) {
 366                 struct sk_buff *skb2;
 367
 368                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 369                           brcmf_ifname(&drvr_priv->pub, ifidx));
 370                 drvr_priv->pub.tx_realloc++;
 371                 skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen);
 372                 dev_kfree_skb(skb);
 373                 skb = skb2;
 374                 if (skb == NULL) {
 375                         brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
 376                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 377                         ret = -ENOMEM;
 378                         goto done;
 379                 }
 380         }
 381
 382         ret = brcmf_sendpkt(&drvr_priv->pub, ifidx, skb);
 383
 384 done:
 385         if (ret)
 386                 drvr_priv->pub.dstats.tx_dropped++;
 387         else
 388                 drvr_priv->pub.tx_packets++;
 389
 390         /* Return ok: we always eat the packet */
 391         return 0;
 392 }
 393
 394 void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state)
 395 {
 396         struct net_device *ndev;
 397         struct brcmf_info *drvr_priv = drvr->info;
 398
 399         brcmf_dbg(TRACE, "Enter\n");
 400
 401         drvr->txoff = state;
 402         ndev = drvr_priv->iflist[ifidx]->ndev;
 403         if (state == ON)
 404                 netif_stop_queue(ndev);
 405         else
 406                 netif_wake_queue(ndev);
 407 }
 408
 409 static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx,
 410                             void *pktdata, struct brcmf_event_msg *event,
 411                             void **data)
 412 {
 413         int bcmerror = 0;
 414
 415         bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data);
 416         if (bcmerror != 0)
 417                 return bcmerror;
 418
 419         if (drvr_priv->iflist[*ifidx]->ndev)
 420                 brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->ndev,
 421                                      event, *data);
 422
 423         return bcmerror;
 424 }
 425
 426 void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb,
 427                   int numpkt)
 428 {
 429         struct brcmf_info *drvr_priv = drvr->info;
 430         unsigned char *eth;
 431         uint len;
 432         void *data;
 433         struct sk_buff *pnext, *save_pktbuf;
 434         int i;
 435         struct brcmf_if *ifp;
 436         struct brcmf_event_msg event;
 437
 438         brcmf_dbg(TRACE, "Enter\n");
 439
 440         save_pktbuf = skb;
 441
 442         for (i = 0; skb && i < numpkt; i++, skb = pnext) {
 443
 444                 pnext = skb->next;
 445                 skb->next = NULL;
 446
 447                 /* Get the protocol, maintain skb around eth_type_trans()
 448                  * The main reason for this hack is for the limitation of
 449                  * Linux 2.4 where 'eth_type_trans' uses the
 450                  * 'net->hard_header_len'
 451                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 452                  * coping of the packet coming from the network stack to add
 453                  * BDC, Hardware header etc, during network interface
 454                  * registration
 455                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 456                  * required
 457                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 458                  */
 459                 eth = skb->data;
 460                 len = skb->len;
 461
 462                 ifp = drvr_priv->iflist[ifidx];
 463                 if (ifp == NULL)
 464                         ifp = drvr_priv->iflist[0];
 465
 466                 skb->dev = ifp->ndev;
 467                 skb->protocol = eth_type_trans(skb, skb->dev);
 468
 469                 if (skb->pkt_type == PACKET_MULTICAST)
 470                         drvr_priv->pub.rx_multicast++;
 471
 472                 skb->data = eth;
 473                 skb->len = len;
 474
 475                 /* Strip header, count, deliver upward */
 476                 skb_pull(skb, ETH_HLEN);
 477
 478                 /* Process special event packets and then discard them */
 479                 if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
 480                         brcmf_host_event(drvr_priv, &ifidx,
 481                                           skb_mac_header(skb),
 482                                           &event, &data);
 483
 484                 if (drvr_priv->iflist[ifidx] &&
 485                     !drvr_priv->iflist[ifidx]->state)
 486                         ifp = drvr_priv->iflist[ifidx];
 487
 488                 if (ifp->ndev)
 489                         ifp->ndev->last_rx = jiffies;
 490
 491                 drvr->dstats.rx_bytes += skb->len;
 492                 drvr->rx_packets++;     /* Local count */
 493
 494                 if (in_interrupt())
 495                         netif_rx(skb);
 496                 else
 497                         /* If the receive is not processed inside an ISR,
 498                          * the softirqd must be woken explicitly to service
 499                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 500                          * by netif_rx_ni(), but in earlier kernels, we need
 501                          * to do it manually.
 502                          */
 503                         netif_rx_ni(skb);
 504         }
 505 }
 506
 507 void brcmf_txcomplete(struct brcmf_pub *drvr, struct sk_buff *txp, bool success)
 508 {
 509         uint ifidx;
 510         struct brcmf_info *drvr_priv = drvr->info;
 511         struct ethhdr *eh;
 512         u16 type;
 513
 514         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 515
 516         eh = (struct ethhdr *)(txp->data);
 517         type = ntohs(eh->h_proto);
 518
 519         if (type == ETH_P_PAE)
 520                 atomic_dec(&drvr_priv->pend_8021x_cnt);
 521
 522 }
 523
 524 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 525 {
 526         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 527                                         netdev_priv(ndev);
 528         struct brcmf_if *ifp;
 529         int ifidx;
 530
 531         brcmf_dbg(TRACE, "Enter\n");
 532
 533         ifidx = brcmf_net2idx(drvr_priv, ndev);
 534         if (ifidx == BRCMF_BAD_IF)
 535                 return NULL;
 536
 537         ifp = drvr_priv->iflist[ifidx];
 538
 539         if (drvr_priv->pub.up)
 540                 /* Use the protocol to get dongle stats */
 541                 brcmf_proto_dstats(&drvr_priv->pub);
 542
 543         /* Copy dongle stats to net device stats */
 544         ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets;
 545         ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets;
 546         ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes;
 547         ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes;
 548         ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors;
 549         ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors;
 550         ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped;
 551         ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped;
 552         ifp->stats.multicast = drvr_priv->pub.dstats.multicast;
 553
 554         return &ifp->stats;
 555 }
 556
 557 /* Retrieve current toe component enables, which are kept
 558          as a bitmap in toe_ol iovar */
 559 static int brcmf_toe_get(struct brcmf_info *drvr_priv, int ifidx, u32 *toe_ol)
 560 {
 561         struct brcmf_dcmd dcmd;
 562         char buf[32];
 563         int ret;
 564
 565         memset(&dcmd, 0, sizeof(dcmd));
 566
 567         dcmd.cmd = BRCMF_C_GET_VAR;
 568         dcmd.buf = buf;
 569         dcmd.len = (uint) sizeof(buf);
 570         dcmd.set = false;
 571
 572         strcpy(buf, "toe_ol");
 573         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 574         if (ret < 0) {
 575                 /* Check for older dongle image that doesn't support toe_ol */
 576                 if (ret == -EIO) {
 577                         brcmf_dbg(ERROR, "%s: toe not supported by device\n",
 578                                   brcmf_ifname(&drvr_priv->pub, ifidx));
 579                         return -EOPNOTSUPP;
 580                 }
 581
 582                 brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
 583                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 584                 return ret;
 585         }
 586
 587         memcpy(toe_ol, buf, sizeof(u32));
 588         return 0;
 589 }
 590
 591 /* Set current toe component enables in toe_ol iovar,
 592          and set toe global enable iovar */
 593 static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol)
 594 {
 595         struct brcmf_dcmd dcmd;
 596         char buf[32];
 597         int toe, ret;
 598
 599         memset(&dcmd, 0, sizeof(dcmd));
 600
 601         dcmd.cmd = BRCMF_C_SET_VAR;
 602         dcmd.buf = buf;
 603         dcmd.len = (uint) sizeof(buf);
 604         dcmd.set = true;
 605
 606         /* Set toe_ol as requested */
 607
 608         strcpy(buf, "toe_ol");
 609         memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32));
 610
 611         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 612         if (ret < 0) {
 613                 brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
 614                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 615                 return ret;
 616         }
 617
 618         /* Enable toe globally only if any components are enabled. */
 619
 620         toe = (toe_ol != 0);
 621
 622         strcpy(buf, "toe");
 623         memcpy(&buf[sizeof("toe")], &toe, sizeof(u32));
 624
 625         ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len);
 626         if (ret < 0) {
 627                 brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
 628                           brcmf_ifname(&drvr_priv->pub, ifidx), ret);
 629                 return ret;
 630         }
 631
 632         return 0;
 633 }
 634
 635 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 636                                     struct ethtool_drvinfo *info)
 637 {
 638         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 639                                         netdev_priv(ndev);
 640
 641         sprintf(info->driver, KBUILD_MODNAME);
 642         sprintf(info->version, "%lu", drvr_priv->pub.drv_version);
 643         sprintf(info->fw_version, "%s", BCM4329_FW_NAME);
 644         sprintf(info->bus_info, "%s",
 645                 dev_name(brcmf_bus_get_device(drvr_priv->pub.bus)));
 646 }
 647
 648 static struct ethtool_ops brcmf_ethtool_ops = {
 649         .get_drvinfo = brcmf_ethtool_get_drvinfo
 650 };
 651
 652 static int brcmf_ethtool(struct brcmf_info *drvr_priv, void __user *uaddr)
 653 {
 654         struct ethtool_drvinfo info;
 655         char drvname[sizeof(info.driver)];
 656         u32 cmd;
 657         struct ethtool_value edata;
 658         u32 toe_cmpnt, csum_dir;
 659         int ret;
 660
 661         brcmf_dbg(TRACE, "Enter\n");
 662
 663         /* all ethtool calls start with a cmd word */
 664         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 665                 return -EFAULT;
 666
 667         switch (cmd) {
 668         case ETHTOOL_GDRVINFO:
 669                 /* Copy out any request driver name */
 670                 if (copy_from_user(&info, uaddr, sizeof(info)))
 671                         return -EFAULT;
 672                 strncpy(drvname, info.driver, sizeof(info.driver));
 673                 drvname[sizeof(info.driver) - 1] = '\0';
 674
 675                 /* clear struct for return */
 676                 memset(&info, 0, sizeof(info));
 677                 info.cmd = cmd;
 678
 679                 /* if requested, identify ourselves */
 680                 if (strcmp(drvname, "?dhd") == 0) {
 681                         sprintf(info.driver, "dhd");
 682                         strcpy(info.version, BRCMF_VERSION_STR);
 683                 }
 684
 685                 /* otherwise, require dongle to be up */
 686                 else if (!drvr_priv->pub.up) {
 687                         brcmf_dbg(ERROR, "dongle is not up\n");
 688                         return -ENODEV;
 689                 }
 690
 691                 /* finally, report dongle driver type */
 692                 else if (drvr_priv->pub.iswl)
 693                         sprintf(info.driver, "wl");
 694                 else
 695                         sprintf(info.driver, "xx");
 696
 697                 sprintf(info.version, "%lu", drvr_priv->pub.drv_version);
 698                 if (copy_to_user(uaddr, &info, sizeof(info)))
 699                         return -EFAULT;
 700                 brcmf_dbg(CTL, "given %*s, returning %s\n",
 701                           (int)sizeof(drvname), drvname, info.driver);
 702                 break;
 703
 704                 /* Get toe offload components from dongle */
 705         case ETHTOOL_GRXCSUM:
 706         case ETHTOOL_GTXCSUM:
 707                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 708                 if (ret < 0)
 709                         return ret;
 710
 711                 csum_dir =
 712                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 713
 714                 edata.cmd = cmd;
 715                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 716
 717                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 718                         return -EFAULT;
 719                 break;
 720
 721                 /* Set toe offload components in dongle */
 722         case ETHTOOL_SRXCSUM:
 723         case ETHTOOL_STXCSUM:
 724                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 725                         return -EFAULT;
 726
 727                 /* Read the current settings, update and write back */
 728                 ret = brcmf_toe_get(drvr_priv, 0, &toe_cmpnt);
 729                 if (ret < 0)
 730                         return ret;
 731
 732                 csum_dir =
 733                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 734
 735                 if (edata.data != 0)
 736                         toe_cmpnt |= csum_dir;
 737                 else
 738                         toe_cmpnt &= ~csum_dir;
 739
 740                 ret = brcmf_toe_set(drvr_priv, 0, toe_cmpnt);
 741                 if (ret < 0)
 742                         return ret;
 743
 744                 /* If setting TX checksum mode, tell Linux the new mode */
 745                 if (cmd == ETHTOOL_STXCSUM) {
 746                         if (edata.data)
 747                                 drvr_priv->iflist[0]->ndev->features |=
 748                                     NETIF_F_IP_CSUM;
 749                         else
 750                                 drvr_priv->iflist[0]->ndev->features &=
 751                                     ~NETIF_F_IP_CSUM;
 752                 }
 753
 754                 break;
 755
 756         default:
 757                 return -EOPNOTSUPP;
 758         }
 759
 760         return 0;
 761 }
 762
 763 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 764                                     int cmd)
 765 {
 766         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 767                                         netdev_priv(ndev);
 768         int ifidx;
 769
 770         ifidx = brcmf_net2idx(drvr_priv, ndev);
 771         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifidx, cmd);
 772
 773         if (ifidx == BRCMF_BAD_IF)
 774                 return -1;
 775
 776         if (cmd == SIOCETHTOOL)
 777                 return brcmf_ethtool(drvr_priv, ifr->ifr_data);
 778
 779         return -EOPNOTSUPP;
 780 }
 781
 782 /* called only from within this driver. Sends a command to the dongle. */
 783 s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len)
 784 {
 785         struct brcmf_dcmd dcmd;
 786         s32 err = 0;
 787         int buflen = 0;
 788         bool is_set_key_cmd;
 789         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 790                                         netdev_priv(ndev);
 791         int ifidx;
 792
 793         memset(&dcmd, 0, sizeof(dcmd));
 794         dcmd.cmd = cmd;
 795         dcmd.buf = arg;
 796         dcmd.len = len;
 797
 798         ifidx = brcmf_net2idx(drvr_priv, ndev);
 799
 800         if (dcmd.buf != NULL)
 801                 buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN);
 802
 803         /* send to dongle (must be up, and wl) */
 804         if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) {
 805                 brcmf_dbg(ERROR, "DONGLE_DOWN\n");
 806                 err = -EIO;
 807                 goto done;
 808         }
 809
 810         if (!drvr_priv->pub.iswl) {
 811                 err = -EIO;
 812                 goto done;
 813         }
 814
 815         /*
 816          * Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and
 817          * set key CMD to prevent M4 encryption.
 818          */
 819         is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) ||
 820                           ((dcmd.cmd == BRCMF_C_SET_VAR) &&
 821                            !(strncmp("wsec_key", dcmd.buf, 9))) ||
 822                           ((dcmd.cmd == BRCMF_C_SET_VAR) &&
 823                            !(strncmp("bsscfg:wsec_key", dcmd.buf, 15))));
 824         if (is_set_key_cmd)
 825                 brcmf_netdev_wait_pend8021x(ndev);
 826
 827         err = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, buflen);
 828
 829 done:
 830         if (err > 0)
 831                 err = 0;
 832
 833         return err;
 834 }
 835
 836 static int brcmf_netdev_stop(struct net_device *ndev)
 837 {
 838         struct brcmf_pub *drvr = *(struct brcmf_pub **) netdev_priv(ndev);
 839
 840         brcmf_dbg(TRACE, "Enter\n");
 841         brcmf_cfg80211_down(drvr->config);
 842         if (drvr->up == 0)
 843                 return 0;
 844
 845         /* Set state and stop OS transmissions */
 846         drvr->up = 0;
 847         netif_stop_queue(ndev);
 848
 849         return 0;
 850 }
 851
 852 static int brcmf_netdev_open(struct net_device *ndev)
 853 {
 854         struct brcmf_info *drvr_priv = *(struct brcmf_info **)
 855                                         netdev_priv(ndev);
 856         u32 toe_ol;
 857         int ifidx = brcmf_net2idx(drvr_priv, ndev);
 858         s32 ret = 0;
 859
 860         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
 861
 862         if (ifidx == 0) {       /* do it only for primary eth0 */
 863
 864                 /* try to bring up bus */
 865                 ret = brcmf_bus_start(&drvr_priv->pub);
 866                 if (ret != 0) {
 867                         brcmf_dbg(ERROR, "failed with code %d\n", ret);
 868                         return -1;
 869                 }
 870                 atomic_set(&drvr_priv->pend_8021x_cnt, 0);
 871
 872                 memcpy(ndev->dev_addr, drvr_priv->pub.mac, ETH_ALEN);
 873
 874                 /* Get current TOE mode from dongle */
 875                 if (brcmf_toe_get(drvr_priv, ifidx, &toe_ol) >= 0
 876                     && (toe_ol & TOE_TX_CSUM_OL) != 0)
 877                         drvr_priv->iflist[ifidx]->ndev->features |=
 878                                 NETIF_F_IP_CSUM;
 879                 else
 880                         drvr_priv->iflist[ifidx]->ndev->features &=
 881                                 ~NETIF_F_IP_CSUM;
 882         }
 883         /* Allow transmit calls */
 884         netif_start_queue(ndev);
 885         drvr_priv->pub.up = 1;
 886         if (brcmf_cfg80211_up(drvr_priv->pub.config)) {
 887                 brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
 888                 return -1;
 889         }
 890
 891         return ret;
 892 }
 893
 894 int
 895 brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, struct net_device *ndev,
 896              char *name, u8 *mac_addr, u32 flags, u8 bssidx)
 897 {
 898         struct brcmf_if *ifp;
 899         int ret = 0, err = 0;
 900
 901         brcmf_dbg(TRACE, "idx %d, handle->%p\n", ifidx, ndev);
 902
 903         ifp = drvr_priv->iflist[ifidx];
 904         if (!ifp) {
 905                 ifp = kmalloc(sizeof(struct brcmf_if), GFP_ATOMIC);
 906                 if (!ifp)
 907                         return -ENOMEM;
 908         }
 909
 910         memset(ifp, 0, sizeof(struct brcmf_if));
 911         ifp->info = drvr_priv;
 912         drvr_priv->iflist[ifidx] = ifp;
 913         if (mac_addr != NULL)
 914                 memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
 915
 916         if (ndev == NULL) {
 917                 ifp->state = BRCMF_E_IF_ADD;
 918                 ifp->idx = ifidx;
 919                 /*
 920                  * Delete the existing interface before overwriting it
 921                  * in case we missed the BRCMF_E_IF_DEL event.
 922                  */
 923                 if (ifp->ndev != NULL) {
 924                         brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
 925                                   ifp->ndev->name);
 926                         netif_stop_queue(ifp->ndev);
 927                         unregister_netdev(ifp->ndev);
 928                         free_netdev(ifp->ndev);
 929                 }
 930
 931                 /* Allocate netdev, including space for private structure */
 932                 ifp->ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d",
 933                                          ether_setup);
 934                 if (!ifp->ndev) {
 935                         brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
 936                         ret = -ENOMEM;
 937                 }
 938
 939                 if (ret == 0) {
 940                         memcpy(netdev_priv(ifp->ndev), &drvr_priv,
 941                                sizeof(drvr_priv));
 942                         err = brcmf_net_attach(&drvr_priv->pub, ifp->idx);
 943                         if (err != 0) {
 944                                 brcmf_dbg(ERROR, "brcmf_net_attach failed, err %d\n",
 945                                           err);
 946                                 ret = -EOPNOTSUPP;
 947                         } else {
 948                                 brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
 949                                           current->pid, ifp->ndev->name);
 950                                 ifp->state = 0;
 951                         }
 952                 }
 953
 954                 if (ret < 0) {
 955                         if (ifp->ndev)
 956                                 free_netdev(ifp->ndev);
 957
 958                         drvr_priv->iflist[ifp->idx] = NULL;
 959                         kfree(ifp);
 960                 }
 961         } else
 962                 ifp->ndev = ndev;
 963
 964         return 0;
 965 }
 966
 967 void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx)
 968 {
 969         struct brcmf_if *ifp;
 970
 971         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 972
 973         ifp = drvr_priv->iflist[ifidx];
 974         if (!ifp) {
 975                 brcmf_dbg(ERROR, "Null interface\n");
 976                 return;
 977         }
 978
 979         ifp->state = BRCMF_E_IF_DEL;
 980         ifp->idx = ifidx;
 981         if (ifp->ndev != NULL) {
 982                 netif_stop_queue(ifp->ndev);
 983                 unregister_netdev(ifp->ndev);
 984                 free_netdev(ifp->ndev);
 985                 drvr_priv->iflist[ifidx] = NULL;
 986                 kfree(ifp);
 987         }
 988 }
 989
 990 struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen)
 991 {
 992         struct brcmf_info *drvr_priv = NULL;
 993         struct net_device *ndev;
 994
 995         brcmf_dbg(TRACE, "Enter\n");
 996
 997         /* Allocate netdev, including space for private structure */
 998         ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d", ether_setup);
 999         if (!ndev) {
1000                 brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
1001                 goto fail;
1002         }
1003
1004         /* Allocate primary brcmf_info */
1005         drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC);
1006         if (!drvr_priv)
1007                 goto fail;
1008
1009         /*
1010          * Save the brcmf_info into the priv
1011          */
1012         memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1013
1014         if (brcmf_add_if(drvr_priv, 0, ndev, ndev->name, NULL, 0, 0) ==
1015             BRCMF_BAD_IF)
1016                 goto fail;
1017
1018         ndev->netdev_ops = NULL;
1019         mutex_init(&drvr_priv->proto_block);
1020
1021         /* Link to info module */
1022         drvr_priv->pub.info = drvr_priv;
1023
1024         /* Link to bus module */
1025         drvr_priv->pub.bus = bus;
1026         drvr_priv->pub.hdrlen = bus_hdrlen;
1027
1028         /* Attach and link in the protocol */
1029         if (brcmf_proto_attach(&drvr_priv->pub) != 0) {
1030                 brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
1031                 goto fail;
1032         }
1033
1034         /* Attach and link in the cfg80211 */
1035         drvr_priv->pub.config =
1036                         brcmf_cfg80211_attach(ndev,
1037                                               brcmf_bus_get_device(bus),
1038                                               &drvr_priv->pub);
1039         if (drvr_priv->pub.config == NULL) {
1040                 brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
1041                 goto fail;
1042         }
1043
1044         INIT_WORK(&drvr_priv->setmacaddr_work, _brcmf_set_mac_address);
1045         INIT_WORK(&drvr_priv->multicast_work, _brcmf_set_multicast_list);
1046
1047         /*
1048          * Save the brcmf_info into the priv
1049          */
1050         memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv));
1051
1052         return &drvr_priv->pub;
1053
1054 fail:
1055         if (ndev)
1056                 free_netdev(ndev);
1057         if (drvr_priv)
1058                 brcmf_detach(&drvr_priv->pub);
1059
1060         return NULL;
1061 }
1062
1063 int brcmf_bus_start(struct brcmf_pub *drvr)
1064 {
1065         int ret = -1;
1066         struct brcmf_info *drvr_priv = drvr->info;
1067         /* Room for "event_msgs" + '\0' + bitvec */
1068         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
1069
1070         brcmf_dbg(TRACE, "\n");
1071
1072         /* Bring up the bus */
1073         ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub);
1074         if (ret != 0) {
1075                 brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
1076                 return ret;
1077         }
1078
1079         /* If bus is not ready, can't come up */
1080         if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) {
1081                 brcmf_dbg(ERROR, "failed bus is not ready\n");
1082                 return -ENODEV;
1083         }
1084
1085         brcmu_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
1086                       iovbuf, sizeof(iovbuf));
1087         brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
1088                                     sizeof(iovbuf));
1089         memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
1090
1091         setbit(drvr->eventmask, BRCMF_E_SET_SSID);
1092         setbit(drvr->eventmask, BRCMF_E_PRUNE);
1093         setbit(drvr->eventmask, BRCMF_E_AUTH);
1094         setbit(drvr->eventmask, BRCMF_E_REASSOC);
1095         setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
1096         setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
1097         setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
1098         setbit(drvr->eventmask, BRCMF_E_DISASSOC);
1099         setbit(drvr->eventmask, BRCMF_E_JOIN);
1100         setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
1101         setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
1102         setbit(drvr->eventmask, BRCMF_E_LINK);
1103         setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
1104         setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
1105         setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
1106         setbit(drvr->eventmask, BRCMF_E_TXFAIL);
1107         setbit(drvr->eventmask, BRCMF_E_JOIN_START);
1108         setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
1109
1110 /* enable dongle roaming event */
1111
1112         drvr->pktfilter_count = 1;
1113         /* Setup filter to allow only unicast */
1114         drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
1115
1116         /* Bus is ready, do any protocol initialization */
1117         ret = brcmf_proto_init(&drvr_priv->pub);
1118         if (ret < 0)
1119                 return ret;
1120
1121         return 0;
1122 }
1123
1124 static struct net_device_ops brcmf_netdev_ops_pri = {
1125         .ndo_open = brcmf_netdev_open,
1126         .ndo_stop = brcmf_netdev_stop,
1127         .ndo_get_stats = brcmf_netdev_get_stats,
1128         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
1129         .ndo_start_xmit = brcmf_netdev_start_xmit,
1130         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
1131         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
1132 };
1133
1134 int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
1135 {
1136         struct brcmf_info *drvr_priv = drvr->info;
1137         struct net_device *ndev;
1138         u8 temp_addr[ETH_ALEN] = {
1139                 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
1140
1141         brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
1142
1143         ndev = drvr_priv->iflist[ifidx]->ndev;
1144         ndev->netdev_ops = &brcmf_netdev_ops_pri;
1145
1146         /*
1147          * We have to use the primary MAC for virtual interfaces
1148          */
1149         if (ifidx != 0) {
1150                 /* for virtual interfaces use the primary MAC  */
1151                 memcpy(temp_addr, drvr_priv->pub.mac, ETH_ALEN);
1152
1153         }
1154
1155         if (ifidx == 1) {
1156                 brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
1157                 /*  ACCESSPOINT INTERFACE CASE */
1158                 temp_addr[0] |= 0X02;   /* set bit 2 ,
1159                          - Locally Administered address  */
1160
1161         }
1162         ndev->hard_header_len = ETH_HLEN + drvr_priv->pub.hdrlen;
1163         ndev->ethtool_ops = &brcmf_ethtool_ops;
1164
1165         drvr_priv->pub.rxsz = ndev->mtu + ndev->hard_header_len +
1166                               drvr_priv->pub.hdrlen;
1167
1168         memcpy(ndev->dev_addr, temp_addr, ETH_ALEN);
1169
1170         if (register_netdev(ndev) != 0) {
1171                 brcmf_dbg(ERROR, "couldn't register the net device\n");
1172                 goto fail;
1173         }
1174
1175         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
1176
1177         return 0;
1178
1179 fail:
1180         ndev->netdev_ops = NULL;
1181         return -EBADE;
1182 }
1183
1184 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1185 {
1186         struct brcmf_info *drvr_priv;
1187
1188         brcmf_dbg(TRACE, "Enter\n");
1189
1190         if (drvr) {
1191                 drvr_priv = drvr->info;
1192                 if (drvr_priv) {
1193                         /* Stop the protocol module */
1194                         brcmf_proto_stop(&drvr_priv->pub);
1195
1196                         /* Stop the bus module */
1197                         brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus);
1198                 }
1199         }
1200 }
1201
1202 void brcmf_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                         struct brcmf_if *ifp;
1212                         int i;
1213
1214                         for (i = 1; i < BRCMF_MAX_IFS; i++)
1215                                 if (drvr_priv->iflist[i])
1216                                         brcmf_del_if(drvr_priv, i);
1217
1218                         ifp = drvr_priv->iflist[0];
1219                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
1220                                 rtnl_lock();
1221                                 brcmf_netdev_stop(ifp->ndev);
1222                                 rtnl_unlock();
1223                                 unregister_netdev(ifp->ndev);
1224                         }
1225
1226                         cancel_work_sync(&drvr_priv->setmacaddr_work);
1227                         cancel_work_sync(&drvr_priv->multicast_work);
1228
1229                         brcmf_bus_detach(drvr);
1230
1231                         if (drvr->prot)
1232                                 brcmf_proto_detach(drvr);
1233
1234                         brcmf_cfg80211_detach(drvr->config);
1235
1236                         free_netdev(ifp->ndev);
1237                         kfree(ifp);
1238                         kfree(drvr_priv);
1239                 }
1240         }
1241 }
1242
1243 static void __exit brcmf_module_cleanup(void)
1244 {
1245         brcmf_dbg(TRACE, "Enter\n");
1246
1247         brcmf_bus_unregister();
1248 }
1249
1250 static int __init brcmf_module_init(void)
1251 {
1252         int error;
1253
1254         brcmf_dbg(TRACE, "Enter\n");
1255
1256         error = brcmf_bus_register();
1257
1258         if (error) {
1259                 brcmf_dbg(ERROR, "brcmf_bus_register failed\n");
1260                 goto failed;
1261         }
1262         return 0;
1263
1264 failed:
1265         return -EINVAL;
1266 }
1267
1268 module_init(brcmf_module_init);
1269 module_exit(brcmf_module_cleanup);
1270
1271 int brcmf_os_proto_block(struct brcmf_pub *drvr)
1272 {
1273         struct brcmf_info *drvr_priv = drvr->info;
1274
1275         if (drvr_priv) {
1276                 mutex_lock(&drvr_priv->proto_block);
1277                 return 1;
1278         }
1279         return 0;
1280 }
1281
1282 int brcmf_os_proto_unblock(struct brcmf_pub *drvr)
1283 {
1284         struct brcmf_info *drvr_priv = drvr->info;
1285
1286         if (drvr_priv) {
1287                 mutex_unlock(&drvr_priv->proto_block);
1288                 return 1;
1289         }
1290
1291         return 0;
1292 }
1293
1294 static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv)
1295 {
1296         return atomic_read(&drvr_priv->pend_8021x_cnt);
1297 }
1298
1299 #define MAX_WAIT_FOR_8021X_TX   10
1300
1301 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1302 {
1303         struct brcmf_info *drvr_priv = *(struct brcmf_info **)netdev_priv(ndev);
1304         int timeout = 10 * HZ / 1000;
1305         int ntimes = MAX_WAIT_FOR_8021X_TX;
1306         int pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1307
1308         while (ntimes && pend) {
1309                 if (pend) {
1310                         set_current_state(TASK_INTERRUPTIBLE);
1311                         schedule_timeout(timeout);
1312                         set_current_state(TASK_RUNNING);
1313                         ntimes--;
1314                 }
1315                 pend = brcmf_get_pend_8021x_cnt(drvr_priv);
1316         }
1317         return pend;
1318 }
1319
1320 #ifdef BCMDBG
1321 int brcmf_write_to_file(struct brcmf_pub *drvr, u8 *buf, int size)
1322 {
1323         int ret = 0;
1324         struct file *fp;
1325         mm_segment_t old_fs;
1326         loff_t pos = 0;
1327
1328         /* change to KERNEL_DS address limit */
1329         old_fs = get_fs();
1330         set_fs(KERNEL_DS);
1331
1332         /* open file to write */
1333         fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
1334         if (!fp) {
1335                 brcmf_dbg(ERROR, "open file error\n");
1336                 ret = -1;
1337                 goto exit;
1338         }
1339
1340         /* Write buf to file */
1341         fp->f_op->write(fp, buf, size, &pos);
1342
1343 exit:
1344         /* free buf before return */
1345         kfree(buf);
1346         /* close file before return */
1347         if (fp)
1348                 filp_close(fp, current->files);
1349         /* restore previous address limit */
1350         set_fs(old_fs);
1351
1352         return ret;
1353 }
1354 #endif                          /* BCMDBG */