drivers/net/wireless/brcm80211/brcmfmac/core.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/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/module.h>
  20 #include <net/cfg80211.h>
  21 #include <net/rtnetlink.h>
  22 #include <brcmu_utils.h>
  23 #include <brcmu_wifi.h>
  24
  25 #include "core.h"
  26 #include "bus.h"
  27 #include "debug.h"
  28 #include "fwil_types.h"
  29 #include "p2p.h"
  30 #include "cfg80211.h"
  31 #include "fwil.h"
  32 #include "fwsignal.h"
  33 #include "feature.h"
  34 #include "proto.h"
  35 #include "pcie.h"
  36 #include "common.h"
  37
  38 MODULE_AUTHOR("Broadcom Corporation");
  39 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
  40 MODULE_LICENSE("Dual BSD/GPL");
  41
  42 #define MAX_WAIT_FOR_8021X_TX           50      /* msecs */
  43
  44 /* AMPDU rx reordering definitions */
  45 #define BRCMF_RXREORDER_FLOWID_OFFSET           0
  46 #define BRCMF_RXREORDER_MAXIDX_OFFSET           2
  47 #define BRCMF_RXREORDER_FLAGS_OFFSET            4
  48 #define BRCMF_RXREORDER_CURIDX_OFFSET           6
  49 #define BRCMF_RXREORDER_EXPIDX_OFFSET           8
  50
  51 #define BRCMF_RXREORDER_DEL_FLOW                0x01
  52 #define BRCMF_RXREORDER_FLUSH_ALL               0x02
  53 #define BRCMF_RXREORDER_CURIDX_VALID            0x04
  54 #define BRCMF_RXREORDER_EXPIDX_VALID            0x08
  55 #define BRCMF_RXREORDER_NEW_HOLE                0x10
  56
  57 #define BRCMF_BSSIDX_INVALID                    -1
  58
  59 /* Error bits */
  60 int brcmf_msg_level;
  61 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
  62 MODULE_PARM_DESC(debug, "level of debug output");
  63
  64 /* P2P0 enable */
  65 static int brcmf_p2p_enable;
  66 module_param_named(p2pon, brcmf_p2p_enable, int, 0);
  67 MODULE_PARM_DESC(p2pon, "enable legacy p2p management functionality");
  68
  69 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
  70 {
  71         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  72                 brcmf_err("ifidx %d out of range\n", ifidx);
  73                 return "<if_bad>";
  74         }
  75
  76         if (drvr->iflist[ifidx] == NULL) {
  77                 brcmf_err("null i/f %d\n", ifidx);
  78                 return "<if_null>";
  79         }
  80
  81         if (drvr->iflist[ifidx]->ndev)
  82                 return drvr->iflist[ifidx]->ndev->name;
  83
  84         return "<if_none>";
  85 }
  86
  87 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
  88 {
  89         struct brcmf_if *ifp;
  90         s32 bssidx;
  91
  92         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  93                 brcmf_err("ifidx %d out of range\n", ifidx);
  94                 return NULL;
  95         }
  96
  97         ifp = NULL;
  98         bssidx = drvr->if2bss[ifidx];
  99         if (bssidx >= 0)
 100                 ifp = drvr->iflist[bssidx];
 101
 102         return ifp;
 103 }
 104
 105 static void _brcmf_set_multicast_list(struct work_struct *work)
 106 {
 107         struct brcmf_if *ifp;
 108         struct net_device *ndev;
 109         struct netdev_hw_addr *ha;
 110         u32 cmd_value, cnt;
 111         __le32 cnt_le;
 112         char *buf, *bufp;
 113         u32 buflen;
 114         s32 err;
 115
 116         ifp = container_of(work, struct brcmf_if, multicast_work);
 117
 118         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 119
 120         ndev = ifp->ndev;
 121
 122         /* Determine initial value of allmulti flag */
 123         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
 124
 125         /* Send down the multicast list first. */
 126         cnt = netdev_mc_count(ndev);
 127         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
 128         buf = kmalloc(buflen, GFP_ATOMIC);
 129         if (!buf)
 130                 return;
 131         bufp = buf;
 132
 133         cnt_le = cpu_to_le32(cnt);
 134         memcpy(bufp, &cnt_le, sizeof(cnt_le));
 135         bufp += sizeof(cnt_le);
 136
 137         netdev_for_each_mc_addr(ha, ndev) {
 138                 if (!cnt)
 139                         break;
 140                 memcpy(bufp, ha->addr, ETH_ALEN);
 141                 bufp += ETH_ALEN;
 142                 cnt--;
 143         }
 144
 145         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 146         if (err < 0) {
 147                 brcmf_err("Setting mcast_list failed, %d\n", err);
 148                 cmd_value = cnt ? true : cmd_value;
 149         }
 150
 151         kfree(buf);
 152
 153         /*
 154          * Now send the allmulti setting.  This is based on the setting in the
 155          * net_device flags, but might be modified above to be turned on if we
 156          * were trying to set some addresses and dongle rejected it...
 157          */
 158         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 159         if (err < 0)
 160                 brcmf_err("Setting allmulti failed, %d\n", err);
 161
 162         /*Finally, pick up the PROMISC flag */
 163         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 164         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 165         if (err < 0)
 166                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 167                           err);
 168 }
 169
 170 static void
 171 _brcmf_set_mac_address(struct work_struct *work)
 172 {
 173         struct brcmf_if *ifp;
 174         s32 err;
 175
 176         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 177
 178         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 179
 180         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 181                                        ETH_ALEN);
 182         if (err < 0) {
 183                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 184         } else {
 185                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 186                           ifp->mac_addr);
 187                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 188         }
 189 }
 190
 191 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 192 {
 193         struct brcmf_if *ifp = netdev_priv(ndev);
 194         struct sockaddr *sa = (struct sockaddr *)addr;
 195
 196         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 197         schedule_work(&ifp->setmacaddr_work);
 198         return 0;
 199 }
 200
 201 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 202 {
 203         struct brcmf_if *ifp = netdev_priv(ndev);
 204
 205         schedule_work(&ifp->multicast_work);
 206 }
 207
 208 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 209                                            struct net_device *ndev)
 210 {
 211         int ret;
 212         struct brcmf_if *ifp = netdev_priv(ndev);
 213         struct brcmf_pub *drvr = ifp->drvr;
 214         struct ethhdr *eh;
 215
 216         brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx);
 217
 218         /* Can the device send data? */
 219         if (drvr->bus_if->state != BRCMF_BUS_UP) {
 220                 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
 221                 netif_stop_queue(ndev);
 222                 dev_kfree_skb(skb);
 223                 ret = -ENODEV;
 224                 goto done;
 225         }
 226
 227         if (!drvr->iflist[ifp->bssidx]) {
 228                 brcmf_err("bad ifidx %d\n", ifp->bssidx);
 229                 netif_stop_queue(ndev);
 230                 dev_kfree_skb(skb);
 231                 ret = -ENODEV;
 232                 goto done;
 233         }
 234
 235         /* Make sure there's enough writable headroom*/
 236         ret = skb_cow_head(skb, drvr->hdrlen);
 237         if (ret < 0) {
 238                 brcmf_err("%s: skb_cow_head failed\n",
 239                           brcmf_ifname(drvr, ifp->bssidx));
 240                 dev_kfree_skb(skb);
 241                 goto done;
 242         }
 243
 244         /* validate length for ether packet */
 245         if (skb->len < sizeof(*eh)) {
 246                 ret = -EINVAL;
 247                 dev_kfree_skb(skb);
 248                 goto done;
 249         }
 250
 251         eh = (struct ethhdr *)(skb->data);
 252
 253         if (eh->h_proto == htons(ETH_P_PAE))
 254                 atomic_inc(&ifp->pend_8021x_cnt);
 255
 256         ret = brcmf_fws_process_skb(ifp, skb);
 257
 258 done:
 259         if (ret) {
 260                 ifp->stats.tx_dropped++;
 261         } else {
 262                 ifp->stats.tx_packets++;
 263                 ifp->stats.tx_bytes += skb->len;
 264         }
 265
 266         /* Return ok: we always eat the packet */
 267         return NETDEV_TX_OK;
 268 }
 269
 270 void brcmf_txflowblock_if(struct brcmf_if *ifp,
 271                           enum brcmf_netif_stop_reason reason, bool state)
 272 {
 273         unsigned long flags;
 274
 275         if (!ifp || !ifp->ndev)
 276                 return;
 277
 278         brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
 279                   ifp->bssidx, ifp->netif_stop, reason, state);
 280
 281         spin_lock_irqsave(&ifp->netif_stop_lock, flags);
 282         if (state) {
 283                 if (!ifp->netif_stop)
 284                         netif_stop_queue(ifp->ndev);
 285                 ifp->netif_stop |= reason;
 286         } else {
 287                 ifp->netif_stop &= ~reason;
 288                 if (!ifp->netif_stop)
 289                         netif_wake_queue(ifp->ndev);
 290         }
 291         spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
 292 }
 293
 294 void brcmf_txflowblock(struct device *dev, bool state)
 295 {
 296         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 297         struct brcmf_pub *drvr = bus_if->drvr;
 298
 299         brcmf_dbg(TRACE, "Enter\n");
 300
 301         brcmf_fws_bus_blocked(drvr, state);
 302 }
 303
 304 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
 305 {
 306         if (skb->pkt_type == PACKET_MULTICAST)
 307                 ifp->stats.multicast++;
 308
 309         if (!(ifp->ndev->flags & IFF_UP)) {
 310                 brcmu_pkt_buf_free_skb(skb);
 311                 return;
 312         }
 313
 314         ifp->stats.rx_bytes += skb->len;
 315         ifp->stats.rx_packets++;
 316
 317         brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
 318         if (in_interrupt())
 319                 netif_rx(skb);
 320         else
 321                 /* If the receive is not processed inside an ISR,
 322                  * the softirqd must be woken explicitly to service
 323                  * the NET_RX_SOFTIRQ.  This is handled by netif_rx_ni().
 324                  */
 325                 netif_rx_ni(skb);
 326 }
 327
 328 static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
 329                                          u8 start, u8 end,
 330                                          struct sk_buff_head *skb_list)
 331 {
 332         /* initialize return list */
 333         __skb_queue_head_init(skb_list);
 334
 335         if (rfi->pend_pkts == 0) {
 336                 brcmf_dbg(INFO, "no packets in reorder queue\n");
 337                 return;
 338         }
 339
 340         do {
 341                 if (rfi->pktslots[start]) {
 342                         __skb_queue_tail(skb_list, rfi->pktslots[start]);
 343                         rfi->pktslots[start] = NULL;
 344                 }
 345                 start++;
 346                 if (start > rfi->max_idx)
 347                         start = 0;
 348         } while (start != end);
 349         rfi->pend_pkts -= skb_queue_len(skb_list);
 350 }
 351
 352 static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data,
 353                                          struct sk_buff *pkt)
 354 {
 355         u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
 356         struct brcmf_ampdu_rx_reorder *rfi;
 357         struct sk_buff_head reorder_list;
 358         struct sk_buff *pnext;
 359         u8 flags;
 360         u32 buf_size;
 361
 362         flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
 363         flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
 364
 365         /* validate flags and flow id */
 366         if (flags == 0xFF) {
 367                 brcmf_err("invalid flags...so ignore this packet\n");
 368                 brcmf_netif_rx(ifp, pkt);
 369                 return;
 370         }
 371
 372         rfi = ifp->drvr->reorder_flows[flow_id];
 373         if (flags & BRCMF_RXREORDER_DEL_FLOW) {
 374                 brcmf_dbg(INFO, "flow-%d: delete\n",
 375                           flow_id);
 376
 377                 if (rfi == NULL) {
 378                         brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
 379                                   flow_id);
 380                         brcmf_netif_rx(ifp, pkt);
 381                         return;
 382                 }
 383
 384                 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
 385                                              &reorder_list);
 386                 /* add the last packet */
 387                 __skb_queue_tail(&reorder_list, pkt);
 388                 kfree(rfi);
 389                 ifp->drvr->reorder_flows[flow_id] = NULL;
 390                 goto netif_rx;
 391         }
 392         /* from here on we need a flow reorder instance */
 393         if (rfi == NULL) {
 394                 buf_size = sizeof(*rfi);
 395                 max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
 396
 397                 buf_size += (max_idx + 1) * sizeof(pkt);
 398
 399                 /* allocate space for flow reorder info */
 400                 brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
 401                           flow_id, max_idx);
 402                 rfi = kzalloc(buf_size, GFP_ATOMIC);
 403                 if (rfi == NULL) {
 404                         brcmf_err("failed to alloc buffer\n");
 405                         brcmf_netif_rx(ifp, pkt);
 406                         return;
 407                 }
 408
 409                 ifp->drvr->reorder_flows[flow_id] = rfi;
 410                 rfi->pktslots = (struct sk_buff **)(rfi+1);
 411                 rfi->max_idx = max_idx;
 412         }
 413         if (flags & BRCMF_RXREORDER_NEW_HOLE)  {
 414                 if (rfi->pend_pkts) {
 415                         brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
 416                                                      rfi->exp_idx,
 417                                                      &reorder_list);
 418                         WARN_ON(rfi->pend_pkts);
 419                 } else {
 420                         __skb_queue_head_init(&reorder_list);
 421                 }
 422                 rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
 423                 rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
 424                 rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
 425                 rfi->pktslots[rfi->cur_idx] = pkt;
 426                 rfi->pend_pkts++;
 427                 brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
 428                           flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
 429         } else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
 430                 cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
 431                 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
 432
 433                 if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
 434                         /* still in the current hole */
 435                         /* enqueue the current on the buffer chain */
 436                         if (rfi->pktslots[cur_idx] != NULL) {
 437                                 brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
 438                                 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
 439                                 rfi->pktslots[cur_idx] = NULL;
 440                         }
 441                         rfi->pktslots[cur_idx] = pkt;
 442                         rfi->pend_pkts++;
 443                         rfi->cur_idx = cur_idx;
 444                         brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
 445                                   flow_id, cur_idx, exp_idx, rfi->pend_pkts);
 446
 447                         /* can return now as there is no reorder
 448                          * list to process.
 449                          */
 450                         return;
 451                 }
 452                 if (rfi->exp_idx == cur_idx) {
 453                         if (rfi->pktslots[cur_idx] != NULL) {
 454                                 brcmf_dbg(INFO, "error buffer pending..free it\n");
 455                                 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
 456                                 rfi->pktslots[cur_idx] = NULL;
 457                         }
 458                         rfi->pktslots[cur_idx] = pkt;
 459                         rfi->pend_pkts++;
 460
 461                         /* got the expected one. flush from current to expected
 462                          * and update expected
 463                          */
 464                         brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
 465                                   flow_id, cur_idx, exp_idx, rfi->pend_pkts);
 466
 467                         rfi->cur_idx = cur_idx;
 468                         rfi->exp_idx = exp_idx;
 469
 470                         brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
 471                                                      &reorder_list);
 472                         brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
 473                                   flow_id, skb_queue_len(&reorder_list),
 474                                   rfi->pend_pkts);
 475                 } else {
 476                         u8 end_idx;
 477
 478                         brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
 479                                   flow_id, flags, rfi->cur_idx, rfi->exp_idx,
 480                                   cur_idx, exp_idx);
 481                         if (flags & BRCMF_RXREORDER_FLUSH_ALL)
 482                                 end_idx = rfi->exp_idx;
 483                         else
 484                                 end_idx = exp_idx;
 485
 486                         /* flush pkts first */
 487                         brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
 488                                                      &reorder_list);
 489
 490                         if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
 491                                 __skb_queue_tail(&reorder_list, pkt);
 492                         } else {
 493                                 rfi->pktslots[cur_idx] = pkt;
 494                                 rfi->pend_pkts++;
 495                         }
 496                         rfi->exp_idx = exp_idx;
 497                         rfi->cur_idx = cur_idx;
 498                 }
 499         } else {
 500                 /* explicity window move updating the expected index */
 501                 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
 502
 503                 brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
 504                           flow_id, flags, rfi->exp_idx, exp_idx);
 505                 if (flags & BRCMF_RXREORDER_FLUSH_ALL)
 506                         end_idx =  rfi->exp_idx;
 507                 else
 508                         end_idx =  exp_idx;
 509
 510                 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
 511                                              &reorder_list);
 512                 __skb_queue_tail(&reorder_list, pkt);
 513                 /* set the new expected idx */
 514                 rfi->exp_idx = exp_idx;
 515         }
 516 netif_rx:
 517         skb_queue_walk_safe(&reorder_list, pkt, pnext) {
 518                 __skb_unlink(pkt, &reorder_list);
 519                 brcmf_netif_rx(ifp, pkt);
 520         }
 521 }
 522
 523 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event)
 524 {
 525         struct brcmf_if *ifp;
 526         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 527         struct brcmf_pub *drvr = bus_if->drvr;
 528         struct brcmf_skb_reorder_data *rd;
 529         int ret;
 530
 531         brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
 532
 533         /* process and remove protocol-specific header */
 534         ret = brcmf_proto_hdrpull(drvr, true, skb, &ifp);
 535
 536         if (ret || !ifp || !ifp->ndev) {
 537                 if (ret != -ENODATA && ifp)
 538                         ifp->stats.rx_errors++;
 539                 brcmu_pkt_buf_free_skb(skb);
 540                 return;
 541         }
 542
 543         skb->protocol = eth_type_trans(skb, ifp->ndev);
 544
 545         rd = (struct brcmf_skb_reorder_data *)skb->cb;
 546         if (rd->reorder) {
 547                 brcmf_rxreorder_process_info(ifp, rd->reorder, skb);
 548         } else {
 549                 /* Process special event packets */
 550                 if (handle_event)
 551                         brcmf_fweh_process_skb(ifp->drvr, skb,
 552                                                BCMILCP_SUBTYPE_VENDOR_LONG);
 553
 554                 brcmf_netif_rx(ifp, skb);
 555         }
 556 }
 557
 558 void brcmf_rx_event(struct device *dev, struct sk_buff *skb)
 559 {
 560         struct brcmf_if *ifp;
 561         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 562         struct brcmf_pub *drvr = bus_if->drvr;
 563         int ret;
 564
 565         brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
 566
 567         /* process and remove protocol-specific header */
 568         ret = brcmf_proto_hdrpull(drvr, true, skb, &ifp);
 569
 570         if (ret || !ifp || !ifp->ndev) {
 571                 if (ret != -ENODATA && ifp)
 572                         ifp->stats.rx_errors++;
 573                 brcmu_pkt_buf_free_skb(skb);
 574                 return;
 575         }
 576
 577         skb->protocol = eth_type_trans(skb, ifp->ndev);
 578
 579         brcmf_fweh_process_skb(ifp->drvr, skb, 0);
 580         brcmu_pkt_buf_free_skb(skb);
 581 }
 582
 583 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
 584 {
 585         struct ethhdr *eh;
 586         u16 type;
 587
 588         eh = (struct ethhdr *)(txp->data);
 589         type = ntohs(eh->h_proto);
 590
 591         if (type == ETH_P_PAE) {
 592                 atomic_dec(&ifp->pend_8021x_cnt);
 593                 if (waitqueue_active(&ifp->pend_8021x_wait))
 594                         wake_up(&ifp->pend_8021x_wait);
 595         }
 596
 597         if (!success)
 598                 ifp->stats.tx_errors++;
 599
 600         brcmu_pkt_buf_free_skb(txp);
 601 }
 602
 603 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 604 {
 605         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 606         struct brcmf_pub *drvr = bus_if->drvr;
 607         struct brcmf_if *ifp;
 608
 609         /* await txstatus signal for firmware if active */
 610         if (brcmf_fws_fc_active(drvr->fws)) {
 611                 if (!success)
 612                         brcmf_fws_bustxfail(drvr->fws, txp);
 613         } else {
 614                 if (brcmf_proto_hdrpull(drvr, false, txp, &ifp))
 615                         brcmu_pkt_buf_free_skb(txp);
 616                 else
 617                         brcmf_txfinalize(ifp, txp, success);
 618         }
 619 }
 620
 621 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 622 {
 623         struct brcmf_if *ifp = netdev_priv(ndev);
 624
 625         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 626
 627         return &ifp->stats;
 628 }
 629
 630 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 631                                     struct ethtool_drvinfo *info)
 632 {
 633         struct brcmf_if *ifp = netdev_priv(ndev);
 634         struct brcmf_pub *drvr = ifp->drvr;
 635         char drev[BRCMU_DOTREV_LEN] = "n/a";
 636
 637         if (drvr->revinfo.result == 0)
 638                 brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
 639         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 640         strlcpy(info->version, drev, sizeof(info->version));
 641         strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
 642         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 643                 sizeof(info->bus_info));
 644 }
 645
 646 static const struct ethtool_ops brcmf_ethtool_ops = {
 647         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 648 };
 649
 650 static int brcmf_netdev_stop(struct net_device *ndev)
 651 {
 652         struct brcmf_if *ifp = netdev_priv(ndev);
 653
 654         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 655
 656         brcmf_cfg80211_down(ndev);
 657
 658         brcmf_net_setcarrier(ifp, false);
 659
 660         return 0;
 661 }
 662
 663 static int brcmf_netdev_open(struct net_device *ndev)
 664 {
 665         struct brcmf_if *ifp = netdev_priv(ndev);
 666         struct brcmf_pub *drvr = ifp->drvr;
 667         struct brcmf_bus *bus_if = drvr->bus_if;
 668         u32 toe_ol;
 669
 670         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 671
 672         /* If bus is not ready, can't continue */
 673         if (bus_if->state != BRCMF_BUS_UP) {
 674                 brcmf_err("failed bus is not ready\n");
 675                 return -EAGAIN;
 676         }
 677
 678         atomic_set(&ifp->pend_8021x_cnt, 0);
 679
 680         /* Get current TOE mode from dongle */
 681         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 682             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 683                 ndev->features |= NETIF_F_IP_CSUM;
 684         else
 685                 ndev->features &= ~NETIF_F_IP_CSUM;
 686
 687         if (brcmf_cfg80211_up(ndev)) {
 688                 brcmf_err("failed to bring up cfg80211\n");
 689                 return -EIO;
 690         }
 691
 692         /* Clear, carrier, set when connected or AP mode. */
 693         netif_carrier_off(ndev);
 694         return 0;
 695 }
 696
 697 static const struct net_device_ops brcmf_netdev_ops_pri = {
 698         .ndo_open = brcmf_netdev_open,
 699         .ndo_stop = brcmf_netdev_stop,
 700         .ndo_get_stats = brcmf_netdev_get_stats,
 701         .ndo_start_xmit = brcmf_netdev_start_xmit,
 702         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 703         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 704 };
 705
 706 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
 707 {
 708         struct brcmf_pub *drvr = ifp->drvr;
 709         struct net_device *ndev;
 710         s32 err;
 711
 712         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 713                   ifp->mac_addr);
 714         ndev = ifp->ndev;
 715
 716         /* set appropriate operations */
 717         ndev->netdev_ops = &brcmf_netdev_ops_pri;
 718
 719         ndev->hard_header_len += drvr->hdrlen;
 720         ndev->ethtool_ops = &brcmf_ethtool_ops;
 721
 722         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 723                               drvr->hdrlen;
 724
 725         /* set the mac address */
 726         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 727
 728         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 729         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 730
 731         if (rtnl_locked)
 732                 err = register_netdevice(ndev);
 733         else
 734                 err = register_netdev(ndev);
 735         if (err != 0) {
 736                 brcmf_err("couldn't register the net device\n");
 737                 goto fail;
 738         }
 739
 740         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 741         return 0;
 742
 743 fail:
 744         drvr->iflist[ifp->bssidx] = NULL;
 745         ndev->netdev_ops = NULL;
 746         free_netdev(ndev);
 747         return -EBADE;
 748 }
 749
 750 static void brcmf_net_detach(struct net_device *ndev)
 751 {
 752         if (ndev->reg_state == NETREG_REGISTERED)
 753                 unregister_netdev(ndev);
 754         else
 755                 brcmf_cfg80211_free_netdev(ndev);
 756 }
 757
 758 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
 759 {
 760         struct net_device *ndev;
 761
 762         brcmf_dbg(TRACE, "Enter, idx=%d carrier=%d\n", ifp->bssidx, on);
 763
 764         ndev = ifp->ndev;
 765         brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
 766         if (on) {
 767                 if (!netif_carrier_ok(ndev))
 768                         netif_carrier_on(ndev);
 769
 770         } else {
 771                 if (netif_carrier_ok(ndev))
 772                         netif_carrier_off(ndev);
 773         }
 774 }
 775
 776 static int brcmf_net_p2p_open(struct net_device *ndev)
 777 {
 778         brcmf_dbg(TRACE, "Enter\n");
 779
 780         return brcmf_cfg80211_up(ndev);
 781 }
 782
 783 static int brcmf_net_p2p_stop(struct net_device *ndev)
 784 {
 785         brcmf_dbg(TRACE, "Enter\n");
 786
 787         return brcmf_cfg80211_down(ndev);
 788 }
 789
 790 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
 791                                             struct net_device *ndev)
 792 {
 793         if (skb)
 794                 dev_kfree_skb_any(skb);
 795
 796         return NETDEV_TX_OK;
 797 }
 798
 799 static const struct net_device_ops brcmf_netdev_ops_p2p = {
 800         .ndo_open = brcmf_net_p2p_open,
 801         .ndo_stop = brcmf_net_p2p_stop,
 802         .ndo_start_xmit = brcmf_net_p2p_start_xmit
 803 };
 804
 805 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
 806 {
 807         struct net_device *ndev;
 808
 809         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 810                   ifp->mac_addr);
 811         ndev = ifp->ndev;
 812
 813         ndev->netdev_ops = &brcmf_netdev_ops_p2p;
 814
 815         /* set the mac address */
 816         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 817
 818         if (register_netdev(ndev) != 0) {
 819                 brcmf_err("couldn't register the p2p net device\n");
 820                 goto fail;
 821         }
 822
 823         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 824
 825         return 0;
 826
 827 fail:
 828         ifp->drvr->iflist[ifp->bssidx] = NULL;
 829         ndev->netdev_ops = NULL;
 830         free_netdev(ndev);
 831         return -EBADE;
 832 }
 833
 834 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
 835                               bool is_p2pdev, char *name, u8 *mac_addr)
 836 {
 837         struct brcmf_if *ifp;
 838         struct net_device *ndev;
 839
 840         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
 841
 842         ifp = drvr->iflist[bssidx];
 843         /*
 844          * Delete the existing interface before overwriting it
 845          * in case we missed the BRCMF_E_IF_DEL event.
 846          */
 847         if (ifp) {
 848                 brcmf_err("ERROR: netdev:%s already exists\n",
 849                           ifp->ndev->name);
 850                 if (ifidx) {
 851                         netif_stop_queue(ifp->ndev);
 852                         brcmf_net_detach(ifp->ndev);
 853                         drvr->iflist[bssidx] = NULL;
 854                 } else {
 855                         brcmf_err("ignore IF event\n");
 856                         return ERR_PTR(-EINVAL);
 857                 }
 858         }
 859
 860         if (!brcmf_p2p_enable && is_p2pdev) {
 861                 /* this is P2P_DEVICE interface */
 862                 brcmf_dbg(INFO, "allocate non-netdev interface\n");
 863                 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
 864                 if (!ifp)
 865                         return ERR_PTR(-ENOMEM);
 866         } else {
 867                 brcmf_dbg(INFO, "allocate netdev interface\n");
 868                 /* Allocate netdev, including space for private structure */
 869                 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
 870                                     NET_NAME_UNKNOWN, ether_setup);
 871                 if (!ndev)
 872                         return ERR_PTR(-ENOMEM);
 873
 874                 ndev->destructor = brcmf_cfg80211_free_netdev;
 875                 ifp = netdev_priv(ndev);
 876                 ifp->ndev = ndev;
 877                 /* store mapping ifidx to bssidx */
 878                 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
 879                         drvr->if2bss[ifidx] = bssidx;
 880         }
 881
 882         ifp->drvr = drvr;
 883         drvr->iflist[bssidx] = ifp;
 884         ifp->ifidx = ifidx;
 885         ifp->bssidx = bssidx;
 886
 887         init_waitqueue_head(&ifp->pend_8021x_wait);
 888         spin_lock_init(&ifp->netif_stop_lock);
 889
 890         if (mac_addr != NULL)
 891                 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
 892
 893         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 894                   current->pid, name, ifp->mac_addr);
 895
 896         return ifp;
 897 }
 898
 899 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
 900 {
 901         struct brcmf_if *ifp;
 902
 903         ifp = drvr->iflist[bssidx];
 904         drvr->iflist[bssidx] = NULL;
 905         if (!ifp) {
 906                 brcmf_err("Null interface, idx=%d\n", bssidx);
 907                 return;
 908         }
 909         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
 910         if (drvr->if2bss[ifp->ifidx] == bssidx)
 911                 drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID;
 912         if (ifp->ndev) {
 913                 if (bssidx == 0) {
 914                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 915                                 rtnl_lock();
 916                                 brcmf_netdev_stop(ifp->ndev);
 917                                 rtnl_unlock();
 918                         }
 919                 } else {
 920                         netif_stop_queue(ifp->ndev);
 921                 }
 922
 923                 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 924                         cancel_work_sync(&ifp->setmacaddr_work);
 925                         cancel_work_sync(&ifp->multicast_work);
 926                 }
 927                 brcmf_net_detach(ifp->ndev);
 928         } else {
 929                 /* Only p2p device interfaces which get dynamically created
 930                  * end up here. In this case the p2p module should be informed
 931                  * about the removal of the interface within the firmware. If
 932                  * not then p2p commands towards the firmware will cause some
 933                  * serious troublesome side effects. The p2p module will clean
 934                  * up the ifp if needed.
 935                  */
 936                 brcmf_p2p_ifp_removed(ifp);
 937                 kfree(ifp);
 938         }
 939 }
 940
 941 void brcmf_remove_interface(struct brcmf_if *ifp)
 942 {
 943         if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bssidx] != ifp))
 944                 return;
 945         brcmf_dbg(TRACE, "Enter, bssidx=%d, ifidx=%d\n", ifp->bssidx,
 946                   ifp->ifidx);
 947         brcmf_fws_del_interface(ifp);
 948         brcmf_del_if(ifp->drvr, ifp->bssidx);
 949 }
 950
 951 int brcmf_get_next_free_bsscfgidx(struct brcmf_pub *drvr)
 952 {
 953         int ifidx;
 954         int bsscfgidx;
 955         bool available;
 956         int highest;
 957
 958         available = false;
 959         bsscfgidx = 2;
 960         highest = 2;
 961         for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
 962                 if (drvr->iflist[ifidx]) {
 963                         if (drvr->iflist[ifidx]->bssidx == bsscfgidx)
 964                                 bsscfgidx = highest + 1;
 965                         else if (drvr->iflist[ifidx]->bssidx > highest)
 966                                 highest = drvr->iflist[ifidx]->bssidx;
 967                 } else {
 968                         available = true;
 969                 }
 970         }
 971
 972         return available ? bsscfgidx : -ENOMEM;
 973 }
 974
 975 int brcmf_attach(struct device *dev)
 976 {
 977         struct brcmf_pub *drvr = NULL;
 978         int ret = 0;
 979         int i;
 980
 981         brcmf_dbg(TRACE, "Enter\n");
 982
 983         /* Allocate primary brcmf_info */
 984         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 985         if (!drvr)
 986                 return -ENOMEM;
 987
 988         for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
 989                 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
 990
 991         mutex_init(&drvr->proto_block);
 992
 993         /* Link to bus module */
 994         drvr->hdrlen = 0;
 995         drvr->bus_if = dev_get_drvdata(dev);
 996         drvr->bus_if->drvr = drvr;
 997
 998         /* attach debug facilities */
 999         brcmf_debug_attach(drvr);
1000
1001         /* Attach and link in the protocol */
1002         ret = brcmf_proto_attach(drvr);
1003         if (ret != 0) {
1004                 brcmf_err("brcmf_prot_attach failed\n");
1005                 goto fail;
1006         }
1007
1008         /* attach firmware event handler */
1009         brcmf_fweh_attach(drvr);
1010
1011         return ret;
1012
1013 fail:
1014         brcmf_detach(dev);
1015
1016         return ret;
1017 }
1018
1019 static int brcmf_revinfo_read(struct seq_file *s, void *data)
1020 {
1021         struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
1022         struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
1023         char drev[BRCMU_DOTREV_LEN];
1024         char brev[BRCMU_BOARDREV_LEN];
1025
1026         seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
1027         seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
1028         seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
1029         seq_printf(s, "chipnum: %u (%x)\n", ri->chipnum, ri->chipnum);
1030         seq_printf(s, "chiprev: %u\n", ri->chiprev);
1031         seq_printf(s, "chippkg: %u\n", ri->chippkg);
1032         seq_printf(s, "corerev: %u\n", ri->corerev);
1033         seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
1034         seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
1035         seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
1036         seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
1037         seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
1038         seq_printf(s, "bus: %u\n", ri->bus);
1039         seq_printf(s, "phytype: %u\n", ri->phytype);
1040         seq_printf(s, "phyrev: %u\n", ri->phyrev);
1041         seq_printf(s, "anarev: %u\n", ri->anarev);
1042         seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
1043
1044         return 0;
1045 }
1046
1047 int brcmf_bus_start(struct device *dev)
1048 {
1049         int ret = -1;
1050         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1051         struct brcmf_pub *drvr = bus_if->drvr;
1052         struct brcmf_if *ifp;
1053         struct brcmf_if *p2p_ifp;
1054
1055         brcmf_dbg(TRACE, "\n");
1056
1057         /* add primary networking interface */
1058         ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
1059         if (IS_ERR(ifp))
1060                 return PTR_ERR(ifp);
1061
1062         p2p_ifp = NULL;
1063
1064         /* signal bus ready */
1065         brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
1066
1067         /* Bus is ready, do any initialization */
1068         ret = brcmf_c_preinit_dcmds(ifp);
1069         if (ret < 0)
1070                 goto fail;
1071
1072         brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
1073
1074         /* assure we have chipid before feature attach */
1075         if (!bus_if->chip) {
1076                 bus_if->chip = drvr->revinfo.chipnum;
1077                 bus_if->chiprev = drvr->revinfo.chiprev;
1078                 brcmf_dbg(INFO, "firmware revinfo: chip %x (%d) rev %d\n",
1079                           bus_if->chip, bus_if->chip, bus_if->chiprev);
1080         }
1081         brcmf_feat_attach(drvr);
1082
1083         ret = brcmf_fws_init(drvr);
1084         if (ret < 0)
1085                 goto fail;
1086
1087         brcmf_fws_add_interface(ifp);
1088
1089         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev,
1090                                              brcmf_p2p_enable);
1091         if (drvr->config == NULL) {
1092                 ret = -ENOMEM;
1093                 goto fail;
1094         }
1095
1096         ret = brcmf_net_attach(ifp, false);
1097
1098         if ((!ret) && (brcmf_p2p_enable)) {
1099                 p2p_ifp = drvr->iflist[1];
1100                 if (p2p_ifp)
1101                         ret = brcmf_net_p2p_attach(p2p_ifp);
1102         }
1103 fail:
1104         if (ret < 0) {
1105                 brcmf_err("failed: %d\n", ret);
1106                 if (drvr->config) {
1107                         brcmf_cfg80211_detach(drvr->config);
1108                         drvr->config = NULL;
1109                 }
1110                 if (drvr->fws) {
1111                         brcmf_fws_del_interface(ifp);
1112                         brcmf_fws_deinit(drvr);
1113                 }
1114                 if (ifp)
1115                         brcmf_net_detach(ifp->ndev);
1116                 if (p2p_ifp)
1117                         brcmf_net_detach(p2p_ifp->ndev);
1118                 return ret;
1119         }
1120         return 0;
1121 }
1122
1123 void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
1124 {
1125         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1126         struct brcmf_pub *drvr = bus_if->drvr;
1127
1128         if (drvr) {
1129                 drvr->hdrlen += len;
1130         }
1131 }
1132
1133 static void brcmf_bus_detach(struct brcmf_pub *drvr)
1134 {
1135         brcmf_dbg(TRACE, "Enter\n");
1136
1137         if (drvr) {
1138                 /* Stop the bus module */
1139                 brcmf_bus_stop(drvr->bus_if);
1140         }
1141 }
1142
1143 void brcmf_dev_reset(struct device *dev)
1144 {
1145         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1146         struct brcmf_pub *drvr = bus_if->drvr;
1147
1148         if (drvr == NULL)
1149                 return;
1150
1151         if (drvr->iflist[0])
1152                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1153 }
1154
1155 void brcmf_detach(struct device *dev)
1156 {
1157         s32 i;
1158         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1159         struct brcmf_pub *drvr = bus_if->drvr;
1160
1161         brcmf_dbg(TRACE, "Enter\n");
1162
1163         if (drvr == NULL)
1164                 return;
1165
1166         /* stop firmware event handling */
1167         brcmf_fweh_detach(drvr);
1168         if (drvr->config)
1169                 brcmf_p2p_detach(&drvr->config->p2p);
1170
1171         brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
1172
1173         /* make sure primary interface removed last */
1174         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1175                 brcmf_remove_interface(drvr->iflist[i]);
1176
1177         brcmf_cfg80211_detach(drvr->config);
1178
1179         brcmf_fws_deinit(drvr);
1180
1181         brcmf_bus_detach(drvr);
1182
1183         brcmf_proto_detach(drvr);
1184
1185         brcmf_debug_detach(drvr);
1186         bus_if->drvr = NULL;
1187         kfree(drvr);
1188 }
1189
1190 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
1191 {
1192         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1193         struct brcmf_if *ifp = bus_if->drvr->iflist[0];
1194
1195         return brcmf_fil_iovar_data_set(ifp, name, data, len);
1196 }
1197
1198 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1199 {
1200         return atomic_read(&ifp->pend_8021x_cnt);
1201 }
1202
1203 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
1204 {
1205         int err;
1206
1207         err = wait_event_timeout(ifp->pend_8021x_wait,
1208                                  !brcmf_get_pend_8021x_cnt(ifp),
1209                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
1210
1211         WARN_ON(!err);
1212
1213         return !err;
1214 }
1215
1216 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
1217 {
1218         struct brcmf_pub *drvr = bus->drvr;
1219         struct net_device *ndev;
1220         int ifidx;
1221
1222         brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
1223         bus->state = state;
1224
1225         if (state == BRCMF_BUS_UP) {
1226                 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
1227                         if ((drvr->iflist[ifidx]) &&
1228                             (drvr->iflist[ifidx]->ndev)) {
1229                                 ndev = drvr->iflist[ifidx]->ndev;
1230                                 if (netif_queue_stopped(ndev))
1231                                         netif_wake_queue(ndev);
1232                         }
1233                 }
1234         }
1235 }
1236
1237 static void brcmf_driver_register(struct work_struct *work)
1238 {
1239 #ifdef CONFIG_BRCMFMAC_SDIO
1240         brcmf_sdio_register();
1241 #endif
1242 #ifdef CONFIG_BRCMFMAC_USB
1243         brcmf_usb_register();
1244 #endif
1245 #ifdef CONFIG_BRCMFMAC_PCIE
1246         brcmf_pcie_register();
1247 #endif
1248 }
1249 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
1250
1251 static int __init brcmfmac_module_init(void)
1252 {
1253         brcmf_debugfs_init();
1254 #ifdef CONFIG_BRCMFMAC_SDIO
1255         brcmf_sdio_init();
1256 #endif
1257         if (!schedule_work(&brcmf_driver_work))
1258                 return -EBUSY;
1259
1260         return 0;
1261 }
1262
1263 static void __exit brcmfmac_module_exit(void)
1264 {
1265         cancel_work_sync(&brcmf_driver_work);
1266
1267 #ifdef CONFIG_BRCMFMAC_SDIO
1268         brcmf_sdio_exit();
1269 #endif
1270 #ifdef CONFIG_BRCMFMAC_USB
1271         brcmf_usb_exit();
1272 #endif
1273 #ifdef CONFIG_BRCMFMAC_PCIE
1274         brcmf_pcie_exit();
1275 #endif
1276         brcmf_debugfs_exit();
1277 }
1278
1279 module_init(brcmfmac_module_init);
1280 module_exit(brcmfmac_module_exit);