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/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 "dhd.h"
  26 #include "dhd_bus.h"
  27 #include "dhd_proto.h"
  28 #include "dhd_dbg.h"
  29 #include "wl_cfg80211.h"
  30 #include "fwil.h"
  31
  32 MODULE_AUTHOR("Broadcom Corporation");
  33 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
  34 MODULE_SUPPORTED_DEVICE("Broadcom 802.11 WLAN fullmac cards");
  35 MODULE_LICENSE("Dual BSD/GPL");
  36
  37 #define MAX_WAIT_FOR_8021X_TX           50      /* msecs */
  38
  39 /* Error bits */
  40 int brcmf_msg_level;
  41 module_param(brcmf_msg_level, int, 0);
  42
  43
  44 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
  45 {
  46         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  47                 brcmf_err("ifidx %d out of range\n", ifidx);
  48                 return "<if_bad>";
  49         }
  50
  51         if (drvr->iflist[ifidx] == NULL) {
  52                 brcmf_err("null i/f %d\n", ifidx);
  53                 return "<if_null>";
  54         }
  55
  56         if (drvr->iflist[ifidx]->ndev)
  57                 return drvr->iflist[ifidx]->ndev->name;
  58
  59         return "<if_none>";
  60 }
  61
  62 static void _brcmf_set_multicast_list(struct work_struct *work)
  63 {
  64         struct brcmf_if *ifp;
  65         struct net_device *ndev;
  66         struct netdev_hw_addr *ha;
  67         u32 cmd_value, cnt;
  68         __le32 cnt_le;
  69         char *buf, *bufp;
  70         u32 buflen;
  71         s32 err;
  72
  73         brcmf_dbg(TRACE, "enter\n");
  74
  75         ifp = container_of(work, struct brcmf_if, multicast_work);
  76         ndev = ifp->ndev;
  77
  78         /* Determine initial value of allmulti flag */
  79         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
  80
  81         /* Send down the multicast list first. */
  82         cnt = netdev_mc_count(ndev);
  83         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
  84         buf = kmalloc(buflen, GFP_ATOMIC);
  85         if (!buf)
  86                 return;
  87         bufp = buf;
  88
  89         cnt_le = cpu_to_le32(cnt);
  90         memcpy(bufp, &cnt_le, sizeof(cnt_le));
  91         bufp += sizeof(cnt_le);
  92
  93         netdev_for_each_mc_addr(ha, ndev) {
  94                 if (!cnt)
  95                         break;
  96                 memcpy(bufp, ha->addr, ETH_ALEN);
  97                 bufp += ETH_ALEN;
  98                 cnt--;
  99         }
 100
 101         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 102         if (err < 0) {
 103                 brcmf_err("Setting mcast_list failed, %d\n", err);
 104                 cmd_value = cnt ? true : cmd_value;
 105         }
 106
 107         kfree(buf);
 108
 109         /*
 110          * Now send the allmulti setting.  This is based on the setting in the
 111          * net_device flags, but might be modified above to be turned on if we
 112          * were trying to set some addresses and dongle rejected it...
 113          */
 114         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 115         if (err < 0)
 116                 brcmf_err("Setting allmulti failed, %d\n", err);
 117
 118         /*Finally, pick up the PROMISC flag */
 119         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 120         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 121         if (err < 0)
 122                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 123                           err);
 124 }
 125
 126 static void
 127 _brcmf_set_mac_address(struct work_struct *work)
 128 {
 129         struct brcmf_if *ifp;
 130         s32 err;
 131
 132         brcmf_dbg(TRACE, "enter\n");
 133
 134         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 135         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 136                                        ETH_ALEN);
 137         if (err < 0) {
 138                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 139         } else {
 140                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 141                           ifp->mac_addr);
 142                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 143         }
 144 }
 145
 146 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 147 {
 148         struct brcmf_if *ifp = netdev_priv(ndev);
 149         struct sockaddr *sa = (struct sockaddr *)addr;
 150
 151         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 152         schedule_work(&ifp->setmacaddr_work);
 153         return 0;
 154 }
 155
 156 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 157 {
 158         struct brcmf_if *ifp = netdev_priv(ndev);
 159
 160         schedule_work(&ifp->multicast_work);
 161 }
 162
 163 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 164 {
 165         int ret;
 166         struct brcmf_if *ifp = netdev_priv(ndev);
 167         struct brcmf_pub *drvr = ifp->drvr;
 168
 169         brcmf_dbg(TRACE, "Enter\n");
 170
 171         /* Reject if down */
 172         if (!drvr->bus_if->drvr_up ||
 173             (drvr->bus_if->state != BRCMF_BUS_DATA)) {
 174                 brcmf_err("xmit rejected drvup=%d state=%d\n",
 175                           drvr->bus_if->drvr_up,
 176                           drvr->bus_if->state);
 177                 netif_stop_queue(ndev);
 178                 return -ENODEV;
 179         }
 180
 181         if (!drvr->iflist[ifp->idx]) {
 182                 brcmf_err("bad ifidx %d\n", ifp->idx);
 183                 netif_stop_queue(ndev);
 184                 return -ENODEV;
 185         }
 186
 187         /* Make sure there's enough room for any header */
 188         if (skb_headroom(skb) < drvr->hdrlen) {
 189                 struct sk_buff *skb2;
 190
 191                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 192                           brcmf_ifname(drvr, ifp->idx));
 193                 drvr->bus_if->tx_realloc++;
 194                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 195                 dev_kfree_skb(skb);
 196                 skb = skb2;
 197                 if (skb == NULL) {
 198                         brcmf_err("%s: skb_realloc_headroom failed\n",
 199                                   brcmf_ifname(drvr, ifp->idx));
 200                         ret = -ENOMEM;
 201                         goto done;
 202                 }
 203         }
 204
 205         /* Update multicast statistic */
 206         if (skb->len >= ETH_ALEN) {
 207                 u8 *pktdata = (u8 *)(skb->data);
 208                 struct ethhdr *eh = (struct ethhdr *)pktdata;
 209
 210                 if (is_multicast_ether_addr(eh->h_dest))
 211                         drvr->tx_multicast++;
 212                 if (ntohs(eh->h_proto) == ETH_P_PAE)
 213                         atomic_inc(&drvr->pend_8021x_cnt);
 214         }
 215
 216         /* If the protocol uses a data header, apply it */
 217         brcmf_proto_hdrpush(drvr, ifp->idx, skb);
 218
 219         /* Use bus module to send data frame */
 220         ret =  brcmf_bus_txdata(drvr->bus_if, skb);
 221
 222 done:
 223         if (ret)
 224                 drvr->bus_if->dstats.tx_dropped++;
 225         else
 226                 drvr->bus_if->dstats.tx_packets++;
 227
 228         /* Return ok: we always eat the packet */
 229         return 0;
 230 }
 231
 232 void brcmf_txflowblock(struct device *dev, bool state)
 233 {
 234         struct net_device *ndev;
 235         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 236         struct brcmf_pub *drvr = bus_if->drvr;
 237         int i;
 238
 239         brcmf_dbg(TRACE, "Enter\n");
 240
 241         for (i = 0; i < BRCMF_MAX_IFS; i++)
 242                 if (drvr->iflist[i]) {
 243                         ndev = drvr->iflist[i]->ndev;
 244                         if (state)
 245                                 netif_stop_queue(ndev);
 246                         else
 247                                 netif_wake_queue(ndev);
 248                 }
 249 }
 250
 251 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 252 {
 253         unsigned char *eth;
 254         uint len;
 255         struct sk_buff *skb, *pnext;
 256         struct brcmf_if *ifp;
 257         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 258         struct brcmf_pub *drvr = bus_if->drvr;
 259         u8 ifidx;
 260         int ret;
 261
 262         brcmf_dbg(TRACE, "Enter\n");
 263
 264         skb_queue_walk_safe(skb_list, skb, pnext) {
 265                 skb_unlink(skb, skb_list);
 266
 267                 /* process and remove protocol-specific header
 268                  */
 269                 ret = brcmf_proto_hdrpull(drvr, &ifidx, skb);
 270                 if (ret < 0) {
 271                         if (ret != -ENODATA)
 272                                 bus_if->dstats.rx_errors++;
 273                         brcmu_pkt_buf_free_skb(skb);
 274                         continue;
 275                 }
 276
 277                 /* Get the protocol, maintain skb around eth_type_trans()
 278                  * The main reason for this hack is for the limitation of
 279                  * Linux 2.4 where 'eth_type_trans' uses the
 280                  * 'net->hard_header_len'
 281                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 282                  * coping of the packet coming from the network stack to add
 283                  * BDC, Hardware header etc, during network interface
 284                  * registration
 285                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 286                  * required
 287                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 288                  */
 289                 eth = skb->data;
 290                 len = skb->len;
 291
 292                 ifp = drvr->iflist[ifidx];
 293                 if (ifp == NULL)
 294                         ifp = drvr->iflist[0];
 295
 296                 if (!ifp || !ifp->ndev ||
 297                     ifp->ndev->reg_state != NETREG_REGISTERED) {
 298                         brcmu_pkt_buf_free_skb(skb);
 299                         continue;
 300                 }
 301
 302                 skb->dev = ifp->ndev;
 303                 skb->protocol = eth_type_trans(skb, skb->dev);
 304
 305                 if (skb->pkt_type == PACKET_MULTICAST)
 306                         bus_if->dstats.multicast++;
 307
 308                 skb->data = eth;
 309                 skb->len = len;
 310
 311                 /* Strip header, count, deliver upward */
 312                 skb_pull(skb, ETH_HLEN);
 313
 314                 /* Process special event packets and then discard them */
 315                 brcmf_fweh_process_skb(drvr, skb, &ifidx);
 316
 317                 if (drvr->iflist[ifidx]) {
 318                         ifp = drvr->iflist[ifidx];
 319                         ifp->ndev->last_rx = jiffies;
 320                 }
 321
 322                 bus_if->dstats.rx_bytes += skb->len;
 323                 bus_if->dstats.rx_packets++;    /* Local count */
 324
 325                 if (in_interrupt())
 326                         netif_rx(skb);
 327                 else
 328                         /* If the receive is not processed inside an ISR,
 329                          * the softirqd must be woken explicitly to service
 330                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 331                          * by netif_rx_ni(), but in earlier kernels, we need
 332                          * to do it manually.
 333                          */
 334                         netif_rx_ni(skb);
 335         }
 336 }
 337
 338 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 339 {
 340         u8 ifidx;
 341         struct ethhdr *eh;
 342         u16 type;
 343         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 344         struct brcmf_pub *drvr = bus_if->drvr;
 345
 346         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 347
 348         eh = (struct ethhdr *)(txp->data);
 349         type = ntohs(eh->h_proto);
 350
 351         if (type == ETH_P_PAE) {
 352                 atomic_dec(&drvr->pend_8021x_cnt);
 353                 if (waitqueue_active(&drvr->pend_8021x_wait))
 354                         wake_up(&drvr->pend_8021x_wait);
 355         }
 356 }
 357
 358 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 359 {
 360         struct brcmf_if *ifp = netdev_priv(ndev);
 361         struct brcmf_bus *bus_if = ifp->drvr->bus_if;
 362
 363         brcmf_dbg(TRACE, "Enter\n");
 364
 365         /* Copy dongle stats to net device stats */
 366         ifp->stats.rx_packets = bus_if->dstats.rx_packets;
 367         ifp->stats.tx_packets = bus_if->dstats.tx_packets;
 368         ifp->stats.rx_bytes = bus_if->dstats.rx_bytes;
 369         ifp->stats.tx_bytes = bus_if->dstats.tx_bytes;
 370         ifp->stats.rx_errors = bus_if->dstats.rx_errors;
 371         ifp->stats.tx_errors = bus_if->dstats.tx_errors;
 372         ifp->stats.rx_dropped = bus_if->dstats.rx_dropped;
 373         ifp->stats.tx_dropped = bus_if->dstats.tx_dropped;
 374         ifp->stats.multicast = bus_if->dstats.multicast;
 375
 376         return &ifp->stats;
 377 }
 378
 379 /*
 380  * Set current toe component enables in toe_ol iovar,
 381  * and set toe global enable iovar
 382  */
 383 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 384 {
 385         s32 err;
 386
 387         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 388         if (err < 0) {
 389                 brcmf_err("Setting toe_ol failed, %d\n", err);
 390                 return err;
 391         }
 392
 393         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 394         if (err < 0)
 395                 brcmf_err("Setting toe failed, %d\n", err);
 396
 397         return err;
 398
 399 }
 400
 401 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 402                                     struct ethtool_drvinfo *info)
 403 {
 404         struct brcmf_if *ifp = netdev_priv(ndev);
 405         struct brcmf_pub *drvr = ifp->drvr;
 406
 407         sprintf(info->driver, KBUILD_MODNAME);
 408         sprintf(info->version, "%lu", drvr->drv_version);
 409         sprintf(info->bus_info, "%s", dev_name(drvr->bus_if->dev));
 410 }
 411
 412 static const struct ethtool_ops brcmf_ethtool_ops = {
 413         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 414 };
 415
 416 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 417 {
 418         struct brcmf_pub *drvr = ifp->drvr;
 419         struct ethtool_drvinfo info;
 420         char drvname[sizeof(info.driver)];
 421         u32 cmd;
 422         struct ethtool_value edata;
 423         u32 toe_cmpnt, csum_dir;
 424         int ret;
 425
 426         brcmf_dbg(TRACE, "Enter\n");
 427
 428         /* all ethtool calls start with a cmd word */
 429         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 430                 return -EFAULT;
 431
 432         switch (cmd) {
 433         case ETHTOOL_GDRVINFO:
 434                 /* Copy out any request driver name */
 435                 if (copy_from_user(&info, uaddr, sizeof(info)))
 436                         return -EFAULT;
 437                 strncpy(drvname, info.driver, sizeof(info.driver));
 438                 drvname[sizeof(info.driver) - 1] = '\0';
 439
 440                 /* clear struct for return */
 441                 memset(&info, 0, sizeof(info));
 442                 info.cmd = cmd;
 443
 444                 /* if requested, identify ourselves */
 445                 if (strcmp(drvname, "?dhd") == 0) {
 446                         sprintf(info.driver, "dhd");
 447                         strcpy(info.version, BRCMF_VERSION_STR);
 448                 }
 449
 450                 /* otherwise, require dongle to be up */
 451                 else if (!drvr->bus_if->drvr_up) {
 452                         brcmf_err("dongle is not up\n");
 453                         return -ENODEV;
 454                 }
 455                 /* finally, report dongle driver type */
 456                 else
 457                         sprintf(info.driver, "wl");
 458
 459                 sprintf(info.version, "%lu", drvr->drv_version);
 460                 if (copy_to_user(uaddr, &info, sizeof(info)))
 461                         return -EFAULT;
 462                 brcmf_dbg(TRACE, "given %*s, returning %s\n",
 463                           (int)sizeof(drvname), drvname, info.driver);
 464                 break;
 465
 466                 /* Get toe offload components from dongle */
 467         case ETHTOOL_GRXCSUM:
 468         case ETHTOOL_GTXCSUM:
 469                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 470                 if (ret < 0)
 471                         return ret;
 472
 473                 csum_dir =
 474                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 475
 476                 edata.cmd = cmd;
 477                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 478
 479                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 480                         return -EFAULT;
 481                 break;
 482
 483                 /* Set toe offload components in dongle */
 484         case ETHTOOL_SRXCSUM:
 485         case ETHTOOL_STXCSUM:
 486                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 487                         return -EFAULT;
 488
 489                 /* Read the current settings, update and write back */
 490                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 491                 if (ret < 0)
 492                         return ret;
 493
 494                 csum_dir =
 495                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 496
 497                 if (edata.data != 0)
 498                         toe_cmpnt |= csum_dir;
 499                 else
 500                         toe_cmpnt &= ~csum_dir;
 501
 502                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 503                 if (ret < 0)
 504                         return ret;
 505
 506                 /* If setting TX checksum mode, tell Linux the new mode */
 507                 if (cmd == ETHTOOL_STXCSUM) {
 508                         if (edata.data)
 509                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 510                         else
 511                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 512                 }
 513
 514                 break;
 515
 516         default:
 517                 return -EOPNOTSUPP;
 518         }
 519
 520         return 0;
 521 }
 522
 523 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 524                                     int cmd)
 525 {
 526         struct brcmf_if *ifp = netdev_priv(ndev);
 527         struct brcmf_pub *drvr = ifp->drvr;
 528
 529         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifp->idx, cmd);
 530
 531         if (!drvr->iflist[ifp->idx])
 532                 return -1;
 533
 534         if (cmd == SIOCETHTOOL)
 535                 return brcmf_ethtool(ifp, ifr->ifr_data);
 536
 537         return -EOPNOTSUPP;
 538 }
 539
 540 static int brcmf_netdev_stop(struct net_device *ndev)
 541 {
 542         struct brcmf_if *ifp = netdev_priv(ndev);
 543         struct brcmf_pub *drvr = ifp->drvr;
 544
 545         brcmf_dbg(TRACE, "Enter\n");
 546
 547         if (drvr->bus_if->drvr_up == 0)
 548                 return 0;
 549
 550         brcmf_cfg80211_down(ndev);
 551
 552         /* Set state and stop OS transmissions */
 553         drvr->bus_if->drvr_up = false;
 554         netif_stop_queue(ndev);
 555
 556         return 0;
 557 }
 558
 559 static int brcmf_netdev_open(struct net_device *ndev)
 560 {
 561         struct brcmf_if *ifp = netdev_priv(ndev);
 562         struct brcmf_pub *drvr = ifp->drvr;
 563         struct brcmf_bus *bus_if = drvr->bus_if;
 564         u32 toe_ol;
 565         s32 ret = 0;
 566
 567         brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
 568
 569         /* If bus is not ready, can't continue */
 570         if (bus_if->state != BRCMF_BUS_DATA) {
 571                 brcmf_err("failed bus is not ready\n");
 572                 return -EAGAIN;
 573         }
 574
 575         atomic_set(&drvr->pend_8021x_cnt, 0);
 576
 577         memcpy(ndev->dev_addr, drvr->mac, ETH_ALEN);
 578
 579         /* Get current TOE mode from dongle */
 580         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 581             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 582                 drvr->iflist[ifp->idx]->ndev->features |=
 583                         NETIF_F_IP_CSUM;
 584         else
 585                 drvr->iflist[ifp->idx]->ndev->features &=
 586                         ~NETIF_F_IP_CSUM;
 587
 588         /* make sure RF is ready for work */
 589         brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 0);
 590
 591         /* Allow transmit calls */
 592         netif_start_queue(ndev);
 593         drvr->bus_if->drvr_up = true;
 594         if (brcmf_cfg80211_up(ndev)) {
 595                 brcmf_err("failed to bring up cfg80211\n");
 596                 return -1;
 597         }
 598
 599         return ret;
 600 }
 601
 602 static const struct net_device_ops brcmf_netdev_ops_pri = {
 603         .ndo_open = brcmf_netdev_open,
 604         .ndo_stop = brcmf_netdev_stop,
 605         .ndo_get_stats = brcmf_netdev_get_stats,
 606         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 607         .ndo_start_xmit = brcmf_netdev_start_xmit,
 608         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 609         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 610 };
 611
 612 static const struct net_device_ops brcmf_netdev_ops_virt = {
 613         .ndo_open = brcmf_cfg80211_up,
 614         .ndo_stop = brcmf_cfg80211_down,
 615         .ndo_get_stats = brcmf_netdev_get_stats,
 616         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 617         .ndo_start_xmit = brcmf_netdev_start_xmit,
 618         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 619         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 620 };
 621
 622 int brcmf_net_attach(struct brcmf_if *ifp)
 623 {
 624         struct brcmf_pub *drvr = ifp->drvr;
 625         struct net_device *ndev;
 626
 627         brcmf_dbg(TRACE, "ifidx %d mac %pM\n", ifp->idx, ifp->mac_addr);
 628         ndev = ifp->ndev;
 629
 630         /* set appropriate operations */
 631         if (!ifp->idx)
 632                 ndev->netdev_ops = &brcmf_netdev_ops_pri;
 633         else
 634                 ndev->netdev_ops = &brcmf_netdev_ops_virt;
 635
 636         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 637         ndev->ethtool_ops = &brcmf_ethtool_ops;
 638
 639         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 640                               drvr->hdrlen;
 641
 642         /* set the mac address */
 643         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 644
 645         if (register_netdev(ndev) != 0) {
 646                 brcmf_err("couldn't register the net device\n");
 647                 goto fail;
 648         }
 649
 650         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 651
 652         return 0;
 653
 654 fail:
 655         ndev->netdev_ops = NULL;
 656         return -EBADE;
 657 }
 658
 659 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, int ifidx, s32 bssidx,
 660                               char *name, u8 *addr_mask)
 661 {
 662         struct brcmf_if *ifp;
 663         struct net_device *ndev;
 664         int i;
 665
 666         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 667
 668         ifp = drvr->iflist[ifidx];
 669         /*
 670          * Delete the existing interface before overwriting it
 671          * in case we missed the BRCMF_E_IF_DEL event.
 672          */
 673         if (ifp) {
 674                 brcmf_err("ERROR: netdev:%s already exists\n",
 675                           ifp->ndev->name);
 676                 if (ifidx) {
 677                         netif_stop_queue(ifp->ndev);
 678                         unregister_netdev(ifp->ndev);
 679                         free_netdev(ifp->ndev);
 680                         drvr->iflist[ifidx] = NULL;
 681                 } else {
 682                         brcmf_err("ignore IF event\n");
 683                         return ERR_PTR(-EINVAL);
 684                 }
 685         }
 686
 687         /* Allocate netdev, including space for private structure */
 688         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 689         if (!ndev) {
 690                 brcmf_err("OOM - alloc_netdev\n");
 691                 return ERR_PTR(-ENOMEM);
 692         }
 693
 694         ifp = netdev_priv(ndev);
 695         ifp->ndev = ndev;
 696         ifp->drvr = drvr;
 697         drvr->iflist[ifidx] = ifp;
 698         ifp->idx = ifidx;
 699         ifp->bssidx = bssidx;
 700
 701         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 702         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 703
 704         if (addr_mask != NULL)
 705                 for (i = 0; i < ETH_ALEN; i++)
 706                         ifp->mac_addr[i] = drvr->mac[i] ^ addr_mask[i];
 707
 708         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 709                   current->pid, ifp->ndev->name, ifp->mac_addr);
 710
 711         return ifp;
 712 }
 713
 714 void brcmf_del_if(struct brcmf_pub *drvr, int ifidx)
 715 {
 716         struct brcmf_if *ifp;
 717
 718         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 719
 720         ifp = drvr->iflist[ifidx];
 721         if (!ifp) {
 722                 brcmf_err("Null interface\n");
 723                 return;
 724         }
 725         if (ifp->ndev) {
 726                 if (ifidx == 0) {
 727                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 728                                 rtnl_lock();
 729                                 brcmf_netdev_stop(ifp->ndev);
 730                                 rtnl_unlock();
 731                         }
 732                 } else {
 733                         netif_stop_queue(ifp->ndev);
 734                 }
 735
 736                 cancel_work_sync(&ifp->setmacaddr_work);
 737                 cancel_work_sync(&ifp->multicast_work);
 738
 739                 unregister_netdev(ifp->ndev);
 740                 drvr->iflist[ifidx] = NULL;
 741                 if (ifidx == 0)
 742                         brcmf_cfg80211_detach(drvr->config);
 743                 free_netdev(ifp->ndev);
 744         }
 745 }
 746
 747 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 748 {
 749         struct brcmf_pub *drvr = NULL;
 750         int ret = 0;
 751
 752         brcmf_dbg(TRACE, "Enter\n");
 753
 754         /* Allocate primary brcmf_info */
 755         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 756         if (!drvr)
 757                 return -ENOMEM;
 758
 759         mutex_init(&drvr->proto_block);
 760
 761         /* Link to bus module */
 762         drvr->hdrlen = bus_hdrlen;
 763         drvr->bus_if = dev_get_drvdata(dev);
 764         drvr->bus_if->drvr = drvr;
 765
 766         /* create device debugfs folder */
 767         brcmf_debugfs_attach(drvr);
 768
 769         /* Attach and link in the protocol */
 770         ret = brcmf_proto_attach(drvr);
 771         if (ret != 0) {
 772                 brcmf_err("brcmf_prot_attach failed\n");
 773                 goto fail;
 774         }
 775
 776         /* attach firmware event handler */
 777         brcmf_fweh_attach(drvr);
 778
 779         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 780
 781         init_waitqueue_head(&drvr->pend_8021x_wait);
 782
 783         return ret;
 784
 785 fail:
 786         brcmf_detach(dev);
 787
 788         return ret;
 789 }
 790
 791 int brcmf_bus_start(struct device *dev)
 792 {
 793         int ret = -1;
 794         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 795         struct brcmf_pub *drvr = bus_if->drvr;
 796         struct brcmf_if *ifp;
 797
 798         brcmf_dbg(TRACE, "\n");
 799
 800         /* Bring up the bus */
 801         ret = brcmf_bus_init(bus_if);
 802         if (ret != 0) {
 803                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 804                 return ret;
 805         }
 806
 807         /* add primary networking interface */
 808         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 809         if (IS_ERR(ifp))
 810                 return PTR_ERR(ifp);
 811
 812         /* signal bus ready */
 813         bus_if->state = BRCMF_BUS_DATA;
 814
 815         /* Bus is ready, do any initialization */
 816         ret = brcmf_c_preinit_dcmds(ifp);
 817         if (ret < 0)
 818                 goto fail;
 819
 820         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 821         if (drvr->config == NULL) {
 822                 ret = -ENOMEM;
 823                 goto fail;
 824         }
 825
 826         ret = brcmf_fweh_activate_events(ifp);
 827         if (ret < 0)
 828                 goto fail;
 829
 830         ret = brcmf_net_attach(ifp);
 831 fail:
 832         if (ret < 0) {
 833                 brcmf_err("failed: %d\n", ret);
 834                 if (drvr->config)
 835                         brcmf_cfg80211_detach(drvr->config);
 836                 free_netdev(drvr->iflist[0]->ndev);
 837                 drvr->iflist[0] = NULL;
 838                 return ret;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 845 {
 846         brcmf_dbg(TRACE, "Enter\n");
 847
 848         if (drvr) {
 849                 /* Stop the protocol module */
 850                 brcmf_proto_stop(drvr);
 851
 852                 /* Stop the bus module */
 853                 brcmf_bus_stop(drvr->bus_if);
 854         }
 855 }
 856
 857 void brcmf_dev_reset(struct device *dev)
 858 {
 859         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 860         struct brcmf_pub *drvr = bus_if->drvr;
 861
 862         if (drvr == NULL)
 863                 return;
 864
 865         brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 866 }
 867
 868 void brcmf_detach(struct device *dev)
 869 {
 870         int i;
 871         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 872         struct brcmf_pub *drvr = bus_if->drvr;
 873
 874         brcmf_dbg(TRACE, "Enter\n");
 875
 876         if (drvr == NULL)
 877                 return;
 878
 879         /* stop firmware event handling */
 880         brcmf_fweh_detach(drvr);
 881
 882         /* make sure primary interface removed last */
 883         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 884                 if (drvr->iflist[i])
 885                         brcmf_del_if(drvr, i);
 886
 887         brcmf_bus_detach(drvr);
 888
 889         if (drvr->prot) {
 890                 brcmf_proto_detach(drvr);
 891         }
 892
 893         brcmf_debugfs_detach(drvr);
 894         bus_if->drvr = NULL;
 895         kfree(drvr);
 896 }
 897
 898 static int brcmf_get_pend_8021x_cnt(struct brcmf_pub *drvr)
 899 {
 900         return atomic_read(&drvr->pend_8021x_cnt);
 901 }
 902
 903 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
 904 {
 905         struct brcmf_if *ifp = netdev_priv(ndev);
 906         struct brcmf_pub *drvr = ifp->drvr;
 907         int err;
 908
 909         err = wait_event_timeout(drvr->pend_8021x_wait,
 910                                  !brcmf_get_pend_8021x_cnt(drvr),
 911                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
 912
 913         WARN_ON(!err);
 914
 915         return !err;
 916 }
 917
 918 static void brcmf_driver_init(struct work_struct *work)
 919 {
 920         brcmf_debugfs_init();
 921
 922 #ifdef CONFIG_BRCMFMAC_SDIO
 923         brcmf_sdio_init();
 924 #endif
 925 #ifdef CONFIG_BRCMFMAC_USB
 926         brcmf_usb_init();
 927 #endif
 928 }
 929 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
 930
 931 static int __init brcmfmac_module_init(void)
 932 {
 933         if (!schedule_work(&brcmf_driver_work))
 934                 return -EBUSY;
 935
 936         return 0;
 937 }
 938
 939 static void __exit brcmfmac_module_exit(void)
 940 {
 941         cancel_work_sync(&brcmf_driver_work);
 942
 943 #ifdef CONFIG_BRCMFMAC_SDIO
 944         brcmf_sdio_exit();
 945 #endif
 946 #ifdef CONFIG_BRCMFMAC_USB
 947         brcmf_usb_exit();
 948 #endif
 949         brcmf_debugfs_exit();
 950 }
 951
 952 module_init(brcmfmac_module_init);
 953 module_exit(brcmfmac_module_exit);