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 "fwil_types.h"
  30 #include "p2p.h"
  31 #include "wl_cfg80211.h"
  32 #include "fwil.h"
  33 #include "fwsignal.h"
  34
  35 MODULE_AUTHOR("Broadcom Corporation");
  36 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
  37 MODULE_LICENSE("Dual BSD/GPL");
  38
  39 #define MAX_WAIT_FOR_8021X_TX           50      /* msecs */
  40
  41 /* Error bits */
  42 int brcmf_msg_level;
  43 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
  44 MODULE_PARM_DESC(debug, "level of debug output");
  45
  46 /* P2P0 enable */
  47 static int brcmf_p2p_enable;
  48 #ifdef CONFIG_BRCMDBG
  49 module_param_named(p2pon, brcmf_p2p_enable, int, 0);
  50 MODULE_PARM_DESC(p2pon, "enable p2p management functionality");
  51 #endif
  52
  53 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
  54 {
  55         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  56                 brcmf_err("ifidx %d out of range\n", ifidx);
  57                 return "<if_bad>";
  58         }
  59
  60         if (drvr->iflist[ifidx] == NULL) {
  61                 brcmf_err("null i/f %d\n", ifidx);
  62                 return "<if_null>";
  63         }
  64
  65         if (drvr->iflist[ifidx]->ndev)
  66                 return drvr->iflist[ifidx]->ndev->name;
  67
  68         return "<if_none>";
  69 }
  70
  71 static void _brcmf_set_multicast_list(struct work_struct *work)
  72 {
  73         struct brcmf_if *ifp;
  74         struct net_device *ndev;
  75         struct netdev_hw_addr *ha;
  76         u32 cmd_value, cnt;
  77         __le32 cnt_le;
  78         char *buf, *bufp;
  79         u32 buflen;
  80         s32 err;
  81
  82         ifp = container_of(work, struct brcmf_if, multicast_work);
  83
  84         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
  85
  86         ndev = ifp->ndev;
  87
  88         /* Determine initial value of allmulti flag */
  89         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
  90
  91         /* Send down the multicast list first. */
  92         cnt = netdev_mc_count(ndev);
  93         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
  94         buf = kmalloc(buflen, GFP_ATOMIC);
  95         if (!buf)
  96                 return;
  97         bufp = buf;
  98
  99         cnt_le = cpu_to_le32(cnt);
 100         memcpy(bufp, &cnt_le, sizeof(cnt_le));
 101         bufp += sizeof(cnt_le);
 102
 103         netdev_for_each_mc_addr(ha, ndev) {
 104                 if (!cnt)
 105                         break;
 106                 memcpy(bufp, ha->addr, ETH_ALEN);
 107                 bufp += ETH_ALEN;
 108                 cnt--;
 109         }
 110
 111         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 112         if (err < 0) {
 113                 brcmf_err("Setting mcast_list failed, %d\n", err);
 114                 cmd_value = cnt ? true : cmd_value;
 115         }
 116
 117         kfree(buf);
 118
 119         /*
 120          * Now send the allmulti setting.  This is based on the setting in the
 121          * net_device flags, but might be modified above to be turned on if we
 122          * were trying to set some addresses and dongle rejected it...
 123          */
 124         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 125         if (err < 0)
 126                 brcmf_err("Setting allmulti failed, %d\n", err);
 127
 128         /*Finally, pick up the PROMISC flag */
 129         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 130         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 131         if (err < 0)
 132                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 133                           err);
 134 }
 135
 136 static void
 137 _brcmf_set_mac_address(struct work_struct *work)
 138 {
 139         struct brcmf_if *ifp;
 140         s32 err;
 141
 142         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 143
 144         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 145
 146         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 147                                        ETH_ALEN);
 148         if (err < 0) {
 149                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 150         } else {
 151                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 152                           ifp->mac_addr);
 153                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 154         }
 155 }
 156
 157 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 158 {
 159         struct brcmf_if *ifp = netdev_priv(ndev);
 160         struct sockaddr *sa = (struct sockaddr *)addr;
 161
 162         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 163         schedule_work(&ifp->setmacaddr_work);
 164         return 0;
 165 }
 166
 167 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 168 {
 169         struct brcmf_if *ifp = netdev_priv(ndev);
 170
 171         schedule_work(&ifp->multicast_work);
 172 }
 173
 174 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 175                                            struct net_device *ndev)
 176 {
 177         int ret;
 178         struct brcmf_if *ifp = netdev_priv(ndev);
 179         struct brcmf_pub *drvr = ifp->drvr;
 180         struct ethhdr *eh;
 181
 182         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 183
 184         /* Can the device send data? */
 185         if (drvr->bus_if->state != BRCMF_BUS_DATA) {
 186                 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
 187                 netif_stop_queue(ndev);
 188                 dev_kfree_skb(skb);
 189                 ret = -ENODEV;
 190                 goto done;
 191         }
 192
 193         if (!drvr->iflist[ifp->bssidx]) {
 194                 brcmf_err("bad ifidx %d\n", ifp->bssidx);
 195                 netif_stop_queue(ndev);
 196                 dev_kfree_skb(skb);
 197                 ret = -ENODEV;
 198                 goto done;
 199         }
 200
 201         /* Make sure there's enough room for any header */
 202         if (skb_headroom(skb) < drvr->hdrlen) {
 203                 struct sk_buff *skb2;
 204
 205                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 206                           brcmf_ifname(drvr, ifp->bssidx));
 207                 drvr->bus_if->tx_realloc++;
 208                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 209                 dev_kfree_skb(skb);
 210                 skb = skb2;
 211                 if (skb == NULL) {
 212                         brcmf_err("%s: skb_realloc_headroom failed\n",
 213                                   brcmf_ifname(drvr, ifp->bssidx));
 214                         ret = -ENOMEM;
 215                         goto done;
 216                 }
 217         }
 218
 219         /* validate length for ether packet */
 220         if (skb->len < sizeof(*eh)) {
 221                 ret = -EINVAL;
 222                 dev_kfree_skb(skb);
 223                 goto done;
 224         }
 225
 226         ret = brcmf_fws_process_skb(ifp, skb);
 227
 228 done:
 229         if (ret) {
 230                 ifp->stats.tx_dropped++;
 231         } else {
 232                 ifp->stats.tx_packets++;
 233                 ifp->stats.tx_bytes += skb->len;
 234         }
 235
 236         /* Return ok: we always eat the packet */
 237         return NETDEV_TX_OK;
 238 }
 239
 240 void brcmf_txflowblock_if(struct brcmf_if *ifp,
 241                           enum brcmf_netif_stop_reason reason, bool state)
 242 {
 243         if (!ifp)
 244                 return;
 245
 246         brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
 247                   ifp->bssidx, ifp->netif_stop, reason, state);
 248         if (state) {
 249                 if (!ifp->netif_stop)
 250                         netif_stop_queue(ifp->ndev);
 251                 ifp->netif_stop |= reason;
 252         } else {
 253                 ifp->netif_stop &= ~reason;
 254                 if (!ifp->netif_stop)
 255                         netif_wake_queue(ifp->ndev);
 256         }
 257 }
 258
 259 void brcmf_txflowblock(struct device *dev, bool state)
 260 {
 261         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 262         struct brcmf_pub *drvr = bus_if->drvr;
 263         int i;
 264
 265         brcmf_dbg(TRACE, "Enter\n");
 266
 267         for (i = 0; i < BRCMF_MAX_IFS; i++)
 268                 brcmf_txflowblock_if(drvr->iflist[i],
 269                                      BRCMF_NETIF_STOP_REASON_BLOCK_BUS, state);
 270 }
 271
 272 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 273 {
 274         unsigned char *eth;
 275         uint len;
 276         struct sk_buff *skb, *pnext;
 277         struct brcmf_if *ifp;
 278         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 279         struct brcmf_pub *drvr = bus_if->drvr;
 280         u8 ifidx;
 281         int ret;
 282
 283         brcmf_dbg(TRACE, "Enter\n");
 284
 285         skb_queue_walk_safe(skb_list, skb, pnext) {
 286                 skb_unlink(skb, skb_list);
 287
 288                 /* process and remove protocol-specific header */
 289                 ret = brcmf_proto_hdrpull(drvr, drvr->fw_signals, &ifidx, skb);
 290                 ifp = drvr->iflist[ifidx];
 291
 292                 if (ret || !ifp || !ifp->ndev) {
 293                         if ((ret != -ENODATA) && ifp)
 294                                 ifp->stats.rx_errors++;
 295                         brcmu_pkt_buf_free_skb(skb);
 296                         continue;
 297                 }
 298
 299                 /* Get the protocol, maintain skb around eth_type_trans()
 300                  * The main reason for this hack is for the limitation of
 301                  * Linux 2.4 where 'eth_type_trans' uses the
 302                  * 'net->hard_header_len'
 303                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 304                  * coping of the packet coming from the network stack to add
 305                  * BDC, Hardware header etc, during network interface
 306                  * registration
 307                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 308                  * required
 309                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 310                  */
 311                 eth = skb->data;
 312                 len = skb->len;
 313
 314                 skb->dev = ifp->ndev;
 315                 skb->protocol = eth_type_trans(skb, skb->dev);
 316
 317                 if (skb->pkt_type == PACKET_MULTICAST)
 318                         ifp->stats.multicast++;
 319
 320                 skb->data = eth;
 321                 skb->len = len;
 322
 323                 /* Strip header, count, deliver upward */
 324                 skb_pull(skb, ETH_HLEN);
 325
 326                 /* Process special event packets */
 327                 brcmf_fweh_process_skb(drvr, skb);
 328
 329                 if (!(ifp->ndev->flags & IFF_UP)) {
 330                         brcmu_pkt_buf_free_skb(skb);
 331                         continue;
 332                 }
 333
 334                 ifp->stats.rx_bytes += skb->len;
 335                 ifp->stats.rx_packets++;
 336
 337                 if (in_interrupt())
 338                         netif_rx(skb);
 339                 else
 340                         /* If the receive is not processed inside an ISR,
 341                          * the softirqd must be woken explicitly to service
 342                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 343                          * by netif_rx_ni(), but in earlier kernels, we need
 344                          * to do it manually.
 345                          */
 346                         netif_rx_ni(skb);
 347         }
 348 }
 349
 350 void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
 351                       bool success)
 352 {
 353         struct brcmf_if *ifp;
 354         struct ethhdr *eh;
 355         u8 ifidx;
 356         u16 type;
 357         int res;
 358
 359         res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp);
 360
 361         ifp = drvr->iflist[ifidx];
 362         if (!ifp)
 363                 goto done;
 364
 365         if (res == 0) {
 366                 eh = (struct ethhdr *)(txp->data);
 367                 type = ntohs(eh->h_proto);
 368
 369                 if (type == ETH_P_PAE) {
 370                         atomic_dec(&ifp->pend_8021x_cnt);
 371                         if (waitqueue_active(&ifp->pend_8021x_wait))
 372                                 wake_up(&ifp->pend_8021x_wait);
 373                 }
 374         }
 375         if (!success)
 376                 ifp->stats.tx_errors++;
 377 done:
 378         brcmu_pkt_buf_free_skb(txp);
 379 }
 380
 381 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 382 {
 383         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 384         struct brcmf_pub *drvr = bus_if->drvr;
 385
 386         /* await txstatus signal for firmware if active */
 387         if (brcmf_fws_fc_active(drvr->fws)) {
 388                 if (!success)
 389                         brcmf_fws_bustxfail(drvr->fws, txp);
 390         } else {
 391                 brcmf_txfinalize(drvr, txp, success);
 392         }
 393 }
 394
 395 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 396 {
 397         struct brcmf_if *ifp = netdev_priv(ndev);
 398
 399         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 400
 401         return &ifp->stats;
 402 }
 403
 404 /*
 405  * Set current toe component enables in toe_ol iovar,
 406  * and set toe global enable iovar
 407  */
 408 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 409 {
 410         s32 err;
 411
 412         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 413         if (err < 0) {
 414                 brcmf_err("Setting toe_ol failed, %d\n", err);
 415                 return err;
 416         }
 417
 418         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 419         if (err < 0)
 420                 brcmf_err("Setting toe failed, %d\n", err);
 421
 422         return err;
 423
 424 }
 425
 426 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 427                                     struct ethtool_drvinfo *info)
 428 {
 429         struct brcmf_if *ifp = netdev_priv(ndev);
 430         struct brcmf_pub *drvr = ifp->drvr;
 431
 432         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 433         snprintf(info->version, sizeof(info->version), "%lu",
 434                  drvr->drv_version);
 435         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 436                 sizeof(info->bus_info));
 437 }
 438
 439 static const struct ethtool_ops brcmf_ethtool_ops = {
 440         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 441 };
 442
 443 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 444 {
 445         struct brcmf_pub *drvr = ifp->drvr;
 446         struct ethtool_drvinfo info;
 447         char drvname[sizeof(info.driver)];
 448         u32 cmd;
 449         struct ethtool_value edata;
 450         u32 toe_cmpnt, csum_dir;
 451         int ret;
 452
 453         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 454
 455         /* all ethtool calls start with a cmd word */
 456         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 457                 return -EFAULT;
 458
 459         switch (cmd) {
 460         case ETHTOOL_GDRVINFO:
 461                 /* Copy out any request driver name */
 462                 if (copy_from_user(&info, uaddr, sizeof(info)))
 463                         return -EFAULT;
 464                 strncpy(drvname, info.driver, sizeof(info.driver));
 465                 drvname[sizeof(info.driver) - 1] = '\0';
 466
 467                 /* clear struct for return */
 468                 memset(&info, 0, sizeof(info));
 469                 info.cmd = cmd;
 470
 471                 /* if requested, identify ourselves */
 472                 if (strcmp(drvname, "?dhd") == 0) {
 473                         sprintf(info.driver, "dhd");
 474                         strcpy(info.version, BRCMF_VERSION_STR);
 475                 }
 476                 /* report dongle driver type */
 477                 else
 478                         sprintf(info.driver, "wl");
 479
 480                 sprintf(info.version, "%lu", drvr->drv_version);
 481                 if (copy_to_user(uaddr, &info, sizeof(info)))
 482                         return -EFAULT;
 483                 brcmf_dbg(TRACE, "given %*s, returning %s\n",
 484                           (int)sizeof(drvname), drvname, info.driver);
 485                 break;
 486
 487                 /* Get toe offload components from dongle */
 488         case ETHTOOL_GRXCSUM:
 489         case ETHTOOL_GTXCSUM:
 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_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 496
 497                 edata.cmd = cmd;
 498                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 499
 500                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 501                         return -EFAULT;
 502                 break;
 503
 504                 /* Set toe offload components in dongle */
 505         case ETHTOOL_SRXCSUM:
 506         case ETHTOOL_STXCSUM:
 507                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 508                         return -EFAULT;
 509
 510                 /* Read the current settings, update and write back */
 511                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 512                 if (ret < 0)
 513                         return ret;
 514
 515                 csum_dir =
 516                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 517
 518                 if (edata.data != 0)
 519                         toe_cmpnt |= csum_dir;
 520                 else
 521                         toe_cmpnt &= ~csum_dir;
 522
 523                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 524                 if (ret < 0)
 525                         return ret;
 526
 527                 /* If setting TX checksum mode, tell Linux the new mode */
 528                 if (cmd == ETHTOOL_STXCSUM) {
 529                         if (edata.data)
 530                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 531                         else
 532                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 533                 }
 534
 535                 break;
 536
 537         default:
 538                 return -EOPNOTSUPP;
 539         }
 540
 541         return 0;
 542 }
 543
 544 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 545                                     int cmd)
 546 {
 547         struct brcmf_if *ifp = netdev_priv(ndev);
 548         struct brcmf_pub *drvr = ifp->drvr;
 549
 550         brcmf_dbg(TRACE, "Enter, idx=%d, cmd=0x%04x\n", ifp->bssidx, cmd);
 551
 552         if (!drvr->iflist[ifp->bssidx])
 553                 return -1;
 554
 555         if (cmd == SIOCETHTOOL)
 556                 return brcmf_ethtool(ifp, ifr->ifr_data);
 557
 558         return -EOPNOTSUPP;
 559 }
 560
 561 static int brcmf_netdev_stop(struct net_device *ndev)
 562 {
 563         struct brcmf_if *ifp = netdev_priv(ndev);
 564
 565         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 566
 567         brcmf_cfg80211_down(ndev);
 568
 569         /* Set state and stop OS transmissions */
 570         netif_stop_queue(ndev);
 571
 572         return 0;
 573 }
 574
 575 static int brcmf_netdev_open(struct net_device *ndev)
 576 {
 577         struct brcmf_if *ifp = netdev_priv(ndev);
 578         struct brcmf_pub *drvr = ifp->drvr;
 579         struct brcmf_bus *bus_if = drvr->bus_if;
 580         u32 toe_ol;
 581         s32 ret = 0;
 582
 583         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 584
 585         /* If bus is not ready, can't continue */
 586         if (bus_if->state != BRCMF_BUS_DATA) {
 587                 brcmf_err("failed bus is not ready\n");
 588                 return -EAGAIN;
 589         }
 590
 591         atomic_set(&ifp->pend_8021x_cnt, 0);
 592
 593         /* Get current TOE mode from dongle */
 594         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 595             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 596                 ndev->features |= NETIF_F_IP_CSUM;
 597         else
 598                 ndev->features &= ~NETIF_F_IP_CSUM;
 599
 600         /* Allow transmit calls */
 601         netif_start_queue(ndev);
 602         if (brcmf_cfg80211_up(ndev)) {
 603                 brcmf_err("failed to bring up cfg80211\n");
 604                 return -1;
 605         }
 606
 607         return ret;
 608 }
 609
 610 static const struct net_device_ops brcmf_netdev_ops_pri = {
 611         .ndo_open = brcmf_netdev_open,
 612         .ndo_stop = brcmf_netdev_stop,
 613         .ndo_get_stats = brcmf_netdev_get_stats,
 614         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 615         .ndo_start_xmit = brcmf_netdev_start_xmit,
 616         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 617         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 618 };
 619
 620 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
 621 {
 622         struct brcmf_pub *drvr = ifp->drvr;
 623         struct net_device *ndev;
 624         s32 err;
 625
 626         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 627                   ifp->mac_addr);
 628         ndev = ifp->ndev;
 629
 630         /* set appropriate operations */
 631         ndev->netdev_ops = &brcmf_netdev_ops_pri;
 632
 633         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 634         ndev->ethtool_ops = &brcmf_ethtool_ops;
 635
 636         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 637                               drvr->hdrlen;
 638
 639         /* set the mac address */
 640         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 641
 642         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 643         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 644
 645         if (rtnl_locked)
 646                 err = register_netdevice(ndev);
 647         else
 648                 err = register_netdev(ndev);
 649         if (err != 0) {
 650                 brcmf_err("couldn't register the net device\n");
 651                 goto fail;
 652         }
 653
 654         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 655
 656         return 0;
 657
 658 fail:
 659         ndev->netdev_ops = NULL;
 660         return -EBADE;
 661 }
 662
 663 static int brcmf_net_p2p_open(struct net_device *ndev)
 664 {
 665         brcmf_dbg(TRACE, "Enter\n");
 666
 667         return brcmf_cfg80211_up(ndev);
 668 }
 669
 670 static int brcmf_net_p2p_stop(struct net_device *ndev)
 671 {
 672         brcmf_dbg(TRACE, "Enter\n");
 673
 674         return brcmf_cfg80211_down(ndev);
 675 }
 676
 677 static int brcmf_net_p2p_do_ioctl(struct net_device *ndev,
 678                                   struct ifreq *ifr, int cmd)
 679 {
 680         brcmf_dbg(TRACE, "Enter\n");
 681         return 0;
 682 }
 683
 684 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
 685                                             struct net_device *ndev)
 686 {
 687         if (skb)
 688                 dev_kfree_skb_any(skb);
 689
 690         return NETDEV_TX_OK;
 691 }
 692
 693 static const struct net_device_ops brcmf_netdev_ops_p2p = {
 694         .ndo_open = brcmf_net_p2p_open,
 695         .ndo_stop = brcmf_net_p2p_stop,
 696         .ndo_do_ioctl = brcmf_net_p2p_do_ioctl,
 697         .ndo_start_xmit = brcmf_net_p2p_start_xmit
 698 };
 699
 700 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
 701 {
 702         struct net_device *ndev;
 703
 704         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 705                   ifp->mac_addr);
 706         ndev = ifp->ndev;
 707
 708         ndev->netdev_ops = &brcmf_netdev_ops_p2p;
 709
 710         /* set the mac address */
 711         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 712
 713         if (register_netdev(ndev) != 0) {
 714                 brcmf_err("couldn't register the p2p net device\n");
 715                 goto fail;
 716         }
 717
 718         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 719
 720         return 0;
 721
 722 fail:
 723         return -EBADE;
 724 }
 725
 726 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
 727                               char *name, u8 *mac_addr)
 728 {
 729         struct brcmf_if *ifp;
 730         struct net_device *ndev;
 731
 732         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
 733
 734         ifp = drvr->iflist[bssidx];
 735         /*
 736          * Delete the existing interface before overwriting it
 737          * in case we missed the BRCMF_E_IF_DEL event.
 738          */
 739         if (ifp) {
 740                 brcmf_err("ERROR: netdev:%s already exists\n",
 741                           ifp->ndev->name);
 742                 if (ifidx) {
 743                         netif_stop_queue(ifp->ndev);
 744                         unregister_netdev(ifp->ndev);
 745                         free_netdev(ifp->ndev);
 746                         drvr->iflist[bssidx] = NULL;
 747                 } else {
 748                         brcmf_err("ignore IF event\n");
 749                         return ERR_PTR(-EINVAL);
 750                 }
 751         }
 752
 753         if (!brcmf_p2p_enable && bssidx == 1) {
 754                 /* this is P2P_DEVICE interface */
 755                 brcmf_dbg(INFO, "allocate non-netdev interface\n");
 756                 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
 757         } else {
 758                 brcmf_dbg(INFO, "allocate netdev interface\n");
 759                 /* Allocate netdev, including space for private structure */
 760                 ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
 761                 if (!ndev) {
 762                         brcmf_err("OOM - alloc_netdev\n");
 763                         return ERR_PTR(-ENOMEM);
 764                 }
 765
 766                 ifp = netdev_priv(ndev);
 767                 ifp->ndev = ndev;
 768         }
 769
 770         ifp->drvr = drvr;
 771         drvr->iflist[bssidx] = ifp;
 772         ifp->ifidx = ifidx;
 773         ifp->bssidx = bssidx;
 774
 775         init_waitqueue_head(&ifp->pend_8021x_wait);
 776
 777         if (mac_addr != NULL)
 778                 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
 779
 780         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 781                   current->pid, name, ifp->mac_addr);
 782
 783         return ifp;
 784 }
 785
 786 void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
 787 {
 788         struct brcmf_if *ifp;
 789
 790         ifp = drvr->iflist[bssidx];
 791         if (!ifp) {
 792                 brcmf_err("Null interface, idx=%d\n", bssidx);
 793                 return;
 794         }
 795         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
 796         if (ifp->ndev) {
 797                 if (bssidx == 0) {
 798                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 799                                 rtnl_lock();
 800                                 brcmf_netdev_stop(ifp->ndev);
 801                                 rtnl_unlock();
 802                         }
 803                 } else {
 804                         netif_stop_queue(ifp->ndev);
 805                 }
 806
 807                 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 808                         cancel_work_sync(&ifp->setmacaddr_work);
 809                         cancel_work_sync(&ifp->multicast_work);
 810                 }
 811
 812                 unregister_netdev(ifp->ndev);
 813                 if (bssidx == 0)
 814                         brcmf_cfg80211_detach(drvr->config);
 815                 free_netdev(ifp->ndev);
 816         } else {
 817                 kfree(ifp);
 818         }
 819         drvr->iflist[bssidx] = NULL;
 820 }
 821
 822 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 823 {
 824         struct brcmf_pub *drvr = NULL;
 825         int ret = 0;
 826
 827         brcmf_dbg(TRACE, "Enter\n");
 828
 829         /* Allocate primary brcmf_info */
 830         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 831         if (!drvr)
 832                 return -ENOMEM;
 833
 834         mutex_init(&drvr->proto_block);
 835
 836         /* Link to bus module */
 837         drvr->hdrlen = bus_hdrlen;
 838         drvr->bus_if = dev_get_drvdata(dev);
 839         drvr->bus_if->drvr = drvr;
 840
 841         /* create device debugfs folder */
 842         brcmf_debugfs_attach(drvr);
 843
 844         /* Attach and link in the protocol */
 845         ret = brcmf_proto_attach(drvr);
 846         if (ret != 0) {
 847                 brcmf_err("brcmf_prot_attach failed\n");
 848                 goto fail;
 849         }
 850
 851         /* attach firmware event handler */
 852         brcmf_fweh_attach(drvr);
 853
 854         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 855
 856         return ret;
 857
 858 fail:
 859         brcmf_detach(dev);
 860
 861         return ret;
 862 }
 863
 864 int brcmf_bus_start(struct device *dev)
 865 {
 866         int ret = -1;
 867         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 868         struct brcmf_pub *drvr = bus_if->drvr;
 869         struct brcmf_if *ifp;
 870         struct brcmf_if *p2p_ifp;
 871
 872         brcmf_dbg(TRACE, "\n");
 873
 874         /* Bring up the bus */
 875         ret = brcmf_bus_init(bus_if);
 876         if (ret != 0) {
 877                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 878                 return ret;
 879         }
 880
 881         /* add primary networking interface */
 882         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 883         if (IS_ERR(ifp))
 884                 return PTR_ERR(ifp);
 885
 886         if (brcmf_p2p_enable)
 887                 p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL);
 888         else
 889                 p2p_ifp = NULL;
 890         if (IS_ERR(p2p_ifp))
 891                 p2p_ifp = NULL;
 892
 893         /* signal bus ready */
 894         bus_if->state = BRCMF_BUS_DATA;
 895
 896         /* Bus is ready, do any initialization */
 897         ret = brcmf_c_preinit_dcmds(ifp);
 898         if (ret < 0)
 899                 goto fail;
 900
 901         drvr->fw_signals = true;
 902         (void)brcmf_fws_init(drvr);
 903         brcmf_fws_add_interface(ifp);
 904
 905         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 906         if (drvr->config == NULL) {
 907                 ret = -ENOMEM;
 908                 goto fail;
 909         }
 910
 911         ret = brcmf_fweh_activate_events(ifp);
 912         if (ret < 0)
 913                 goto fail;
 914
 915         ret = brcmf_net_attach(ifp, false);
 916 fail:
 917         if (ret < 0) {
 918                 brcmf_err("failed: %d\n", ret);
 919                 if (drvr->config)
 920                         brcmf_cfg80211_detach(drvr->config);
 921                 if (drvr->fws) {
 922                         brcmf_fws_del_interface(ifp);
 923                         brcmf_fws_deinit(drvr);
 924                 }
 925                 free_netdev(ifp->ndev);
 926                 drvr->iflist[0] = NULL;
 927                 if (p2p_ifp) {
 928                         free_netdev(p2p_ifp->ndev);
 929                         drvr->iflist[1] = NULL;
 930                 }
 931                 return ret;
 932         }
 933         if ((brcmf_p2p_enable) && (p2p_ifp))
 934                 brcmf_net_p2p_attach(p2p_ifp);
 935
 936         return 0;
 937 }
 938
 939 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 940 {
 941         brcmf_dbg(TRACE, "Enter\n");
 942
 943         if (drvr) {
 944                 /* Stop the protocol module */
 945                 brcmf_proto_stop(drvr);
 946
 947                 /* Stop the bus module */
 948                 brcmf_bus_stop(drvr->bus_if);
 949         }
 950 }
 951
 952 void brcmf_dev_reset(struct device *dev)
 953 {
 954         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 955         struct brcmf_pub *drvr = bus_if->drvr;
 956
 957         if (drvr == NULL)
 958                 return;
 959
 960         if (drvr->iflist[0])
 961                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 962 }
 963
 964 void brcmf_detach(struct device *dev)
 965 {
 966         s32 i;
 967         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 968         struct brcmf_pub *drvr = bus_if->drvr;
 969
 970         brcmf_dbg(TRACE, "Enter\n");
 971
 972         if (drvr == NULL)
 973                 return;
 974
 975         /* stop firmware event handling */
 976         brcmf_fweh_detach(drvr);
 977
 978         /* make sure primary interface removed last */
 979         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 980                 if (drvr->iflist[i]) {
 981                         brcmf_fws_del_interface(drvr->iflist[i]);
 982                         brcmf_del_if(drvr, i);
 983                 }
 984
 985         brcmf_bus_detach(drvr);
 986
 987         if (drvr->prot)
 988                 brcmf_proto_detach(drvr);
 989
 990         brcmf_fws_deinit(drvr);
 991
 992         brcmf_debugfs_detach(drvr);
 993         bus_if->drvr = NULL;
 994         kfree(drvr);
 995 }
 996
 997 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
 998 {
 999         return atomic_read(&ifp->pend_8021x_cnt);
1000 }
1001
1002 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1003 {
1004         struct brcmf_if *ifp = netdev_priv(ndev);
1005         int err;
1006
1007         err = wait_event_timeout(ifp->pend_8021x_wait,
1008                                  !brcmf_get_pend_8021x_cnt(ifp),
1009                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
1010
1011         WARN_ON(!err);
1012
1013         return !err;
1014 }
1015
1016 /*
1017  * return chip id and rev of the device encoded in u32.
1018  */
1019 u32 brcmf_get_chip_info(struct brcmf_if *ifp)
1020 {
1021         struct brcmf_bus *bus = ifp->drvr->bus_if;
1022
1023         return bus->chip << 4 | bus->chiprev;
1024 }
1025
1026 static void brcmf_driver_init(struct work_struct *work)
1027 {
1028         brcmf_debugfs_init();
1029
1030 #ifdef CONFIG_BRCMFMAC_SDIO
1031         brcmf_sdio_init();
1032 #endif
1033 #ifdef CONFIG_BRCMFMAC_USB
1034         brcmf_usb_init();
1035 #endif
1036 }
1037 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
1038
1039 static int __init brcmfmac_module_init(void)
1040 {
1041         if (!schedule_work(&brcmf_driver_work))
1042                 return -EBUSY;
1043
1044         return 0;
1045 }
1046
1047 static void __exit brcmfmac_module_exit(void)
1048 {
1049         cancel_work_sync(&brcmf_driver_work);
1050
1051 #ifdef CONFIG_BRCMFMAC_SDIO
1052         brcmf_sdio_exit();
1053 #endif
1054 #ifdef CONFIG_BRCMFMAC_USB
1055         brcmf_usb_exit();
1056 #endif
1057         brcmf_debugfs_exit();
1058 }
1059
1060 module_init(brcmfmac_module_init);
1061 module_exit(brcmfmac_module_exit);