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 netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 164                                            struct net_device *ndev)
 165 {
 166         int ret;
 167         struct brcmf_if *ifp = netdev_priv(ndev);
 168         struct brcmf_pub *drvr = ifp->drvr;
 169         struct ethhdr *eh;
 170
 171         brcmf_dbg(TRACE, "Enter\n");
 172
 173         /* Can the device send data? */
 174         if (drvr->bus_if->state != BRCMF_BUS_DATA) {
 175                 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
 176                 netif_stop_queue(ndev);
 177                 dev_kfree_skb(skb);
 178                 ret = -ENODEV;
 179                 goto done;
 180         }
 181
 182         if (!drvr->iflist[ifp->idx]) {
 183                 brcmf_err("bad ifidx %d\n", ifp->idx);
 184                 netif_stop_queue(ndev);
 185                 dev_kfree_skb(skb);
 186                 ret = -ENODEV;
 187                 goto done;
 188         }
 189
 190         /* Make sure there's enough room for any header */
 191         if (skb_headroom(skb) < drvr->hdrlen) {
 192                 struct sk_buff *skb2;
 193
 194                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 195                           brcmf_ifname(drvr, ifp->idx));
 196                 drvr->bus_if->tx_realloc++;
 197                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 198                 dev_kfree_skb(skb);
 199                 skb = skb2;
 200                 if (skb == NULL) {
 201                         brcmf_err("%s: skb_realloc_headroom failed\n",
 202                                   brcmf_ifname(drvr, ifp->idx));
 203                         ret = -ENOMEM;
 204                         goto done;
 205                 }
 206         }
 207
 208         /* validate length for ether packet */
 209         if (skb->len < sizeof(*eh)) {
 210                 ret = -EINVAL;
 211                 dev_kfree_skb(skb);
 212                 goto done;
 213         }
 214
 215         /* handle ethernet header */
 216         eh = (struct ethhdr *)(skb->data);
 217         if (is_multicast_ether_addr(eh->h_dest))
 218                 drvr->tx_multicast++;
 219         if (ntohs(eh->h_proto) == ETH_P_PAE)
 220                 atomic_inc(&drvr->pend_8021x_cnt);
 221
 222         /* If the protocol uses a data header, apply it */
 223         brcmf_proto_hdrpush(drvr, ifp->idx, skb);
 224
 225         /* Use bus module to send data frame */
 226         ret =  brcmf_bus_txdata(drvr->bus_if, skb);
 227
 228 done:
 229         if (ret)
 230                 drvr->bus_if->dstats.tx_dropped++;
 231         else
 232                 drvr->bus_if->dstats.tx_packets++;
 233
 234         /* Return ok: we always eat the packet */
 235         return NETDEV_TX_OK;
 236 }
 237
 238 void brcmf_txflowblock(struct device *dev, bool state)
 239 {
 240         struct net_device *ndev;
 241         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 242         struct brcmf_pub *drvr = bus_if->drvr;
 243         int i;
 244
 245         brcmf_dbg(TRACE, "Enter\n");
 246
 247         for (i = 0; i < BRCMF_MAX_IFS; i++)
 248                 if (drvr->iflist[i]) {
 249                         ndev = drvr->iflist[i]->ndev;
 250                         if (state)
 251                                 netif_stop_queue(ndev);
 252                         else
 253                                 netif_wake_queue(ndev);
 254                 }
 255 }
 256
 257 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 258 {
 259         unsigned char *eth;
 260         uint len;
 261         struct sk_buff *skb, *pnext;
 262         struct brcmf_if *ifp;
 263         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 264         struct brcmf_pub *drvr = bus_if->drvr;
 265         u8 ifidx;
 266         int ret;
 267
 268         brcmf_dbg(TRACE, "Enter\n");
 269
 270         skb_queue_walk_safe(skb_list, skb, pnext) {
 271                 skb_unlink(skb, skb_list);
 272
 273                 /* process and remove protocol-specific header
 274                  */
 275                 ret = brcmf_proto_hdrpull(drvr, &ifidx, skb);
 276                 if (ret < 0) {
 277                         if (ret != -ENODATA)
 278                                 bus_if->dstats.rx_errors++;
 279                         brcmu_pkt_buf_free_skb(skb);
 280                         continue;
 281                 }
 282
 283                 /* Get the protocol, maintain skb around eth_type_trans()
 284                  * The main reason for this hack is for the limitation of
 285                  * Linux 2.4 where 'eth_type_trans' uses the
 286                  * 'net->hard_header_len'
 287                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 288                  * coping of the packet coming from the network stack to add
 289                  * BDC, Hardware header etc, during network interface
 290                  * registration
 291                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 292                  * required
 293                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 294                  */
 295                 eth = skb->data;
 296                 len = skb->len;
 297
 298                 ifp = drvr->iflist[ifidx];
 299                 if (ifp == NULL)
 300                         ifp = drvr->iflist[0];
 301
 302                 if (!ifp || !ifp->ndev ||
 303                     ifp->ndev->reg_state != NETREG_REGISTERED) {
 304                         brcmu_pkt_buf_free_skb(skb);
 305                         continue;
 306                 }
 307
 308                 skb->dev = ifp->ndev;
 309                 skb->protocol = eth_type_trans(skb, skb->dev);
 310
 311                 if (skb->pkt_type == PACKET_MULTICAST)
 312                         bus_if->dstats.multicast++;
 313
 314                 skb->data = eth;
 315                 skb->len = len;
 316
 317                 /* Strip header, count, deliver upward */
 318                 skb_pull(skb, ETH_HLEN);
 319
 320                 /* Process special event packets and then discard them */
 321                 brcmf_fweh_process_skb(drvr, skb, &ifidx);
 322
 323                 if (drvr->iflist[ifidx]) {
 324                         ifp = drvr->iflist[ifidx];
 325                         ifp->ndev->last_rx = jiffies;
 326                 }
 327
 328                 bus_if->dstats.rx_bytes += skb->len;
 329                 bus_if->dstats.rx_packets++;    /* Local count */
 330
 331                 if (in_interrupt())
 332                         netif_rx(skb);
 333                 else
 334                         /* If the receive is not processed inside an ISR,
 335                          * the softirqd must be woken explicitly to service
 336                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 337                          * by netif_rx_ni(), but in earlier kernels, we need
 338                          * to do it manually.
 339                          */
 340                         netif_rx_ni(skb);
 341         }
 342 }
 343
 344 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 345 {
 346         u8 ifidx;
 347         struct ethhdr *eh;
 348         u16 type;
 349         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 350         struct brcmf_pub *drvr = bus_if->drvr;
 351
 352         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 353
 354         eh = (struct ethhdr *)(txp->data);
 355         type = ntohs(eh->h_proto);
 356
 357         if (type == ETH_P_PAE) {
 358                 atomic_dec(&drvr->pend_8021x_cnt);
 359                 if (waitqueue_active(&drvr->pend_8021x_wait))
 360                         wake_up(&drvr->pend_8021x_wait);
 361         }
 362 }
 363
 364 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 365 {
 366         struct brcmf_if *ifp = netdev_priv(ndev);
 367         struct brcmf_bus *bus_if = ifp->drvr->bus_if;
 368
 369         brcmf_dbg(TRACE, "Enter\n");
 370
 371         /* Copy dongle stats to net device stats */
 372         ifp->stats.rx_packets = bus_if->dstats.rx_packets;
 373         ifp->stats.tx_packets = bus_if->dstats.tx_packets;
 374         ifp->stats.rx_bytes = bus_if->dstats.rx_bytes;
 375         ifp->stats.tx_bytes = bus_if->dstats.tx_bytes;
 376         ifp->stats.rx_errors = bus_if->dstats.rx_errors;
 377         ifp->stats.tx_errors = bus_if->dstats.tx_errors;
 378         ifp->stats.rx_dropped = bus_if->dstats.rx_dropped;
 379         ifp->stats.tx_dropped = bus_if->dstats.tx_dropped;
 380         ifp->stats.multicast = bus_if->dstats.multicast;
 381
 382         return &ifp->stats;
 383 }
 384
 385 /*
 386  * Set current toe component enables in toe_ol iovar,
 387  * and set toe global enable iovar
 388  */
 389 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 390 {
 391         s32 err;
 392
 393         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 394         if (err < 0) {
 395                 brcmf_err("Setting toe_ol failed, %d\n", err);
 396                 return err;
 397         }
 398
 399         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 400         if (err < 0)
 401                 brcmf_err("Setting toe failed, %d\n", err);
 402
 403         return err;
 404
 405 }
 406
 407 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 408                                     struct ethtool_drvinfo *info)
 409 {
 410         struct brcmf_if *ifp = netdev_priv(ndev);
 411         struct brcmf_pub *drvr = ifp->drvr;
 412
 413         sprintf(info->driver, KBUILD_MODNAME);
 414         sprintf(info->version, "%lu", drvr->drv_version);
 415         sprintf(info->bus_info, "%s", dev_name(drvr->bus_if->dev));
 416 }
 417
 418 static const struct ethtool_ops brcmf_ethtool_ops = {
 419         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 420 };
 421
 422 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 423 {
 424         struct brcmf_pub *drvr = ifp->drvr;
 425         struct ethtool_drvinfo info;
 426         char drvname[sizeof(info.driver)];
 427         u32 cmd;
 428         struct ethtool_value edata;
 429         u32 toe_cmpnt, csum_dir;
 430         int ret;
 431
 432         brcmf_dbg(TRACE, "Enter\n");
 433
 434         /* all ethtool calls start with a cmd word */
 435         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 436                 return -EFAULT;
 437
 438         switch (cmd) {
 439         case ETHTOOL_GDRVINFO:
 440                 /* Copy out any request driver name */
 441                 if (copy_from_user(&info, uaddr, sizeof(info)))
 442                         return -EFAULT;
 443                 strncpy(drvname, info.driver, sizeof(info.driver));
 444                 drvname[sizeof(info.driver) - 1] = '\0';
 445
 446                 /* clear struct for return */
 447                 memset(&info, 0, sizeof(info));
 448                 info.cmd = cmd;
 449
 450                 /* if requested, identify ourselves */
 451                 if (strcmp(drvname, "?dhd") == 0) {
 452                         sprintf(info.driver, "dhd");
 453                         strcpy(info.version, BRCMF_VERSION_STR);
 454                 }
 455                 /* 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         brcmf_dbg(TRACE, "Enter\n");
 543
 544         brcmf_cfg80211_down(ndev);
 545
 546         /* Set state and stop OS transmissions */
 547         netif_stop_queue(ndev);
 548
 549         return 0;
 550 }
 551
 552 static int brcmf_netdev_open(struct net_device *ndev)
 553 {
 554         struct brcmf_if *ifp = netdev_priv(ndev);
 555         struct brcmf_pub *drvr = ifp->drvr;
 556         struct brcmf_bus *bus_if = drvr->bus_if;
 557         u32 toe_ol;
 558         s32 ret = 0;
 559
 560         brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
 561
 562         /* If bus is not ready, can't continue */
 563         if (bus_if->state != BRCMF_BUS_DATA) {
 564                 brcmf_err("failed bus is not ready\n");
 565                 return -EAGAIN;
 566         }
 567
 568         atomic_set(&drvr->pend_8021x_cnt, 0);
 569
 570         memcpy(ndev->dev_addr, drvr->mac, ETH_ALEN);
 571
 572         /* Get current TOE mode from dongle */
 573         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 574             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 575                 ndev->features |= NETIF_F_IP_CSUM;
 576         else
 577                 ndev->features &= ~NETIF_F_IP_CSUM;
 578
 579         /* Allow transmit calls */
 580         netif_start_queue(ndev);
 581         if (brcmf_cfg80211_up(ndev)) {
 582                 brcmf_err("failed to bring up cfg80211\n");
 583                 return -1;
 584         }
 585
 586         return ret;
 587 }
 588
 589 static const struct net_device_ops brcmf_netdev_ops_pri = {
 590         .ndo_open = brcmf_netdev_open,
 591         .ndo_stop = brcmf_netdev_stop,
 592         .ndo_get_stats = brcmf_netdev_get_stats,
 593         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 594         .ndo_start_xmit = brcmf_netdev_start_xmit,
 595         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 596         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 597 };
 598
 599 static const struct net_device_ops brcmf_netdev_ops_virt = {
 600         .ndo_open = brcmf_cfg80211_up,
 601         .ndo_stop = brcmf_cfg80211_down,
 602         .ndo_get_stats = brcmf_netdev_get_stats,
 603         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 604         .ndo_start_xmit = brcmf_netdev_start_xmit,
 605         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 606         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 607 };
 608
 609 int brcmf_net_attach(struct brcmf_if *ifp)
 610 {
 611         struct brcmf_pub *drvr = ifp->drvr;
 612         struct net_device *ndev;
 613
 614         brcmf_dbg(TRACE, "ifidx %d mac %pM\n", ifp->idx, ifp->mac_addr);
 615         ndev = ifp->ndev;
 616
 617         /* set appropriate operations */
 618         if (!ifp->idx)
 619                 ndev->netdev_ops = &brcmf_netdev_ops_pri;
 620         else
 621                 ndev->netdev_ops = &brcmf_netdev_ops_virt;
 622
 623         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 624         ndev->ethtool_ops = &brcmf_ethtool_ops;
 625
 626         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 627                               drvr->hdrlen;
 628
 629         /* set the mac address */
 630         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 631
 632         if (register_netdev(ndev) != 0) {
 633                 brcmf_err("couldn't register the net device\n");
 634                 goto fail;
 635         }
 636
 637         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 638
 639         return 0;
 640
 641 fail:
 642         ndev->netdev_ops = NULL;
 643         return -EBADE;
 644 }
 645
 646 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, int ifidx, s32 bssidx,
 647                               char *name, u8 *addr_mask)
 648 {
 649         struct brcmf_if *ifp;
 650         struct net_device *ndev;
 651         int i;
 652
 653         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 654
 655         ifp = drvr->iflist[ifidx];
 656         /*
 657          * Delete the existing interface before overwriting it
 658          * in case we missed the BRCMF_E_IF_DEL event.
 659          */
 660         if (ifp) {
 661                 brcmf_err("ERROR: netdev:%s already exists\n",
 662                           ifp->ndev->name);
 663                 if (ifidx) {
 664                         netif_stop_queue(ifp->ndev);
 665                         unregister_netdev(ifp->ndev);
 666                         free_netdev(ifp->ndev);
 667                         drvr->iflist[ifidx] = NULL;
 668                 } else {
 669                         brcmf_err("ignore IF event\n");
 670                         return ERR_PTR(-EINVAL);
 671                 }
 672         }
 673
 674         /* Allocate netdev, including space for private structure */
 675         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 676         if (!ndev) {
 677                 brcmf_err("OOM - alloc_netdev\n");
 678                 return ERR_PTR(-ENOMEM);
 679         }
 680
 681         ifp = netdev_priv(ndev);
 682         ifp->ndev = ndev;
 683         ifp->drvr = drvr;
 684         drvr->iflist[ifidx] = ifp;
 685         ifp->idx = ifidx;
 686         ifp->bssidx = bssidx;
 687
 688         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 689         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 690
 691         if (addr_mask != NULL)
 692                 for (i = 0; i < ETH_ALEN; i++)
 693                         ifp->mac_addr[i] = drvr->mac[i] ^ addr_mask[i];
 694
 695         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 696                   current->pid, ifp->ndev->name, ifp->mac_addr);
 697
 698         return ifp;
 699 }
 700
 701 void brcmf_del_if(struct brcmf_pub *drvr, int ifidx)
 702 {
 703         struct brcmf_if *ifp;
 704
 705         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 706
 707         ifp = drvr->iflist[ifidx];
 708         if (!ifp) {
 709                 brcmf_err("Null interface\n");
 710                 return;
 711         }
 712         if (ifp->ndev) {
 713                 if (ifidx == 0) {
 714                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 715                                 rtnl_lock();
 716                                 brcmf_netdev_stop(ifp->ndev);
 717                                 rtnl_unlock();
 718                         }
 719                 } else {
 720                         netif_stop_queue(ifp->ndev);
 721                 }
 722
 723                 cancel_work_sync(&ifp->setmacaddr_work);
 724                 cancel_work_sync(&ifp->multicast_work);
 725
 726                 unregister_netdev(ifp->ndev);
 727                 drvr->iflist[ifidx] = NULL;
 728                 if (ifidx == 0)
 729                         brcmf_cfg80211_detach(drvr->config);
 730                 free_netdev(ifp->ndev);
 731         }
 732 }
 733
 734 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 735 {
 736         struct brcmf_pub *drvr = NULL;
 737         int ret = 0;
 738
 739         brcmf_dbg(TRACE, "Enter\n");
 740
 741         /* Allocate primary brcmf_info */
 742         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 743         if (!drvr)
 744                 return -ENOMEM;
 745
 746         mutex_init(&drvr->proto_block);
 747
 748         /* Link to bus module */
 749         drvr->hdrlen = bus_hdrlen;
 750         drvr->bus_if = dev_get_drvdata(dev);
 751         drvr->bus_if->drvr = drvr;
 752
 753         /* create device debugfs folder */
 754         brcmf_debugfs_attach(drvr);
 755
 756         /* Attach and link in the protocol */
 757         ret = brcmf_proto_attach(drvr);
 758         if (ret != 0) {
 759                 brcmf_err("brcmf_prot_attach failed\n");
 760                 goto fail;
 761         }
 762
 763         /* attach firmware event handler */
 764         brcmf_fweh_attach(drvr);
 765
 766         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 767
 768         init_waitqueue_head(&drvr->pend_8021x_wait);
 769
 770         return ret;
 771
 772 fail:
 773         brcmf_detach(dev);
 774
 775         return ret;
 776 }
 777
 778 int brcmf_bus_start(struct device *dev)
 779 {
 780         int ret = -1;
 781         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 782         struct brcmf_pub *drvr = bus_if->drvr;
 783         struct brcmf_if *ifp;
 784
 785         brcmf_dbg(TRACE, "\n");
 786
 787         /* Bring up the bus */
 788         ret = brcmf_bus_init(bus_if);
 789         if (ret != 0) {
 790                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 791                 return ret;
 792         }
 793
 794         /* add primary networking interface */
 795         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 796         if (IS_ERR(ifp))
 797                 return PTR_ERR(ifp);
 798
 799         /* signal bus ready */
 800         bus_if->state = BRCMF_BUS_DATA;
 801
 802         /* Bus is ready, do any initialization */
 803         ret = brcmf_c_preinit_dcmds(ifp);
 804         if (ret < 0)
 805                 goto fail;
 806
 807         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 808         if (drvr->config == NULL) {
 809                 ret = -ENOMEM;
 810                 goto fail;
 811         }
 812
 813         ret = brcmf_fweh_activate_events(ifp);
 814         if (ret < 0)
 815                 goto fail;
 816
 817         ret = brcmf_net_attach(ifp);
 818 fail:
 819         if (ret < 0) {
 820                 brcmf_err("failed: %d\n", ret);
 821                 if (drvr->config)
 822                         brcmf_cfg80211_detach(drvr->config);
 823                 free_netdev(drvr->iflist[0]->ndev);
 824                 drvr->iflist[0] = NULL;
 825                 return ret;
 826         }
 827
 828         return 0;
 829 }
 830
 831 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 832 {
 833         brcmf_dbg(TRACE, "Enter\n");
 834
 835         if (drvr) {
 836                 /* Stop the protocol module */
 837                 brcmf_proto_stop(drvr);
 838
 839                 /* Stop the bus module */
 840                 brcmf_bus_stop(drvr->bus_if);
 841         }
 842 }
 843
 844 void brcmf_dev_reset(struct device *dev)
 845 {
 846         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 847         struct brcmf_pub *drvr = bus_if->drvr;
 848
 849         if (drvr == NULL)
 850                 return;
 851
 852         brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 853 }
 854
 855 void brcmf_detach(struct device *dev)
 856 {
 857         int i;
 858         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 859         struct brcmf_pub *drvr = bus_if->drvr;
 860
 861         brcmf_dbg(TRACE, "Enter\n");
 862
 863         if (drvr == NULL)
 864                 return;
 865
 866         /* stop firmware event handling */
 867         brcmf_fweh_detach(drvr);
 868
 869         /* make sure primary interface removed last */
 870         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 871                 if (drvr->iflist[i])
 872                         brcmf_del_if(drvr, i);
 873
 874         brcmf_bus_detach(drvr);
 875
 876         if (drvr->prot)
 877                 brcmf_proto_detach(drvr);
 878
 879         brcmf_debugfs_detach(drvr);
 880         bus_if->drvr = NULL;
 881         kfree(drvr);
 882 }
 883
 884 static int brcmf_get_pend_8021x_cnt(struct brcmf_pub *drvr)
 885 {
 886         return atomic_read(&drvr->pend_8021x_cnt);
 887 }
 888
 889 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
 890 {
 891         struct brcmf_if *ifp = netdev_priv(ndev);
 892         struct brcmf_pub *drvr = ifp->drvr;
 893         int err;
 894
 895         err = wait_event_timeout(drvr->pend_8021x_wait,
 896                                  !brcmf_get_pend_8021x_cnt(drvr),
 897                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
 898
 899         WARN_ON(!err);
 900
 901         return !err;
 902 }
 903
 904 static void brcmf_driver_init(struct work_struct *work)
 905 {
 906         brcmf_debugfs_init();
 907
 908 #ifdef CONFIG_BRCMFMAC_SDIO
 909         brcmf_sdio_init();
 910 #endif
 911 #ifdef CONFIG_BRCMFMAC_USB
 912         brcmf_usb_init();
 913 #endif
 914 }
 915 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
 916
 917 static int __init brcmfmac_module_init(void)
 918 {
 919         if (!schedule_work(&brcmf_driver_work))
 920                 return -EBUSY;
 921
 922         return 0;
 923 }
 924
 925 static void __exit brcmfmac_module_exit(void)
 926 {
 927         cancel_work_sync(&brcmf_driver_work);
 928
 929 #ifdef CONFIG_BRCMFMAC_SDIO
 930         brcmf_sdio_exit();
 931 #endif
 932 #ifdef CONFIG_BRCMFMAC_USB
 933         brcmf_usb_exit();
 934 #endif
 935         brcmf_debugfs_exit();
 936 }
 937
 938 module_init(brcmfmac_module_init);
 939 module_exit(brcmfmac_module_exit);