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(DATA, "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         unsigned long flags;
 244
 245         if (!ifp)
 246                 return;
 247
 248         brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
 249                   ifp->bssidx, ifp->netif_stop, reason, state);
 250
 251         spin_lock_irqsave(&ifp->netif_stop_lock, flags);
 252         if (state) {
 253                 if (!ifp->netif_stop)
 254                         netif_stop_queue(ifp->ndev);
 255                 ifp->netif_stop |= reason;
 256         } else {
 257                 ifp->netif_stop &= ~reason;
 258                 if (!ifp->netif_stop)
 259                         netif_wake_queue(ifp->ndev);
 260         }
 261         spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
 262 }
 263
 264 void brcmf_txflowblock(struct device *dev, bool state)
 265 {
 266         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 267         struct brcmf_pub *drvr = bus_if->drvr;
 268         int i;
 269
 270         brcmf_dbg(TRACE, "Enter\n");
 271
 272         if (brcmf_fws_fc_active(drvr->fws)) {
 273                 brcmf_fws_bus_blocked(drvr, state);
 274         } else {
 275                 for (i = 0; i < BRCMF_MAX_IFS; i++)
 276                         brcmf_txflowblock_if(drvr->iflist[i],
 277                                              BRCMF_NETIF_STOP_REASON_BLOCK_BUS,
 278                                              state);
 279         }
 280 }
 281
 282 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 283 {
 284         unsigned char *eth;
 285         uint len;
 286         struct sk_buff *skb, *pnext;
 287         struct brcmf_if *ifp;
 288         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 289         struct brcmf_pub *drvr = bus_if->drvr;
 290         u8 ifidx;
 291         int ret;
 292
 293         brcmf_dbg(DATA, "Enter\n");
 294
 295         skb_queue_walk_safe(skb_list, skb, pnext) {
 296                 skb_unlink(skb, skb_list);
 297
 298                 /* process and remove protocol-specific header */
 299                 ret = brcmf_proto_hdrpull(drvr, drvr->fw_signals, &ifidx, skb);
 300                 ifp = drvr->iflist[ifidx];
 301
 302                 if (ret || !ifp || !ifp->ndev) {
 303                         if ((ret != -ENODATA) && ifp)
 304                                 ifp->stats.rx_errors++;
 305                         brcmu_pkt_buf_free_skb(skb);
 306                         continue;
 307                 }
 308
 309                 /* Get the protocol, maintain skb around eth_type_trans()
 310                  * The main reason for this hack is for the limitation of
 311                  * Linux 2.4 where 'eth_type_trans' uses the
 312                  * 'net->hard_header_len'
 313                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 314                  * coping of the packet coming from the network stack to add
 315                  * BDC, Hardware header etc, during network interface
 316                  * registration
 317                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 318                  * required
 319                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 320                  */
 321                 eth = skb->data;
 322                 len = skb->len;
 323
 324                 skb->dev = ifp->ndev;
 325                 skb->protocol = eth_type_trans(skb, skb->dev);
 326
 327                 if (skb->pkt_type == PACKET_MULTICAST)
 328                         ifp->stats.multicast++;
 329
 330                 skb->data = eth;
 331                 skb->len = len;
 332
 333                 /* Strip header, count, deliver upward */
 334                 skb_pull(skb, ETH_HLEN);
 335
 336                 /* Process special event packets */
 337                 brcmf_fweh_process_skb(drvr, skb);
 338
 339                 if (!(ifp->ndev->flags & IFF_UP)) {
 340                         brcmu_pkt_buf_free_skb(skb);
 341                         continue;
 342                 }
 343
 344                 ifp->stats.rx_bytes += skb->len;
 345                 ifp->stats.rx_packets++;
 346
 347                 if (in_interrupt())
 348                         netif_rx(skb);
 349                 else
 350                         /* If the receive is not processed inside an ISR,
 351                          * the softirqd must be woken explicitly to service
 352                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 353                          * by netif_rx_ni(), but in earlier kernels, we need
 354                          * to do it manually.
 355                          */
 356                         netif_rx_ni(skb);
 357         }
 358 }
 359
 360 void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
 361                       bool success)
 362 {
 363         struct brcmf_if *ifp;
 364         struct ethhdr *eh;
 365         u8 ifidx;
 366         u16 type;
 367         int res;
 368
 369         res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp);
 370
 371         ifp = drvr->iflist[ifidx];
 372         if (!ifp)
 373                 goto done;
 374
 375         if (res == 0) {
 376                 eh = (struct ethhdr *)(txp->data);
 377                 type = ntohs(eh->h_proto);
 378
 379                 if (type == ETH_P_PAE) {
 380                         atomic_dec(&ifp->pend_8021x_cnt);
 381                         if (waitqueue_active(&ifp->pend_8021x_wait))
 382                                 wake_up(&ifp->pend_8021x_wait);
 383                 }
 384         }
 385         if (!success)
 386                 ifp->stats.tx_errors++;
 387 done:
 388         brcmu_pkt_buf_free_skb(txp);
 389 }
 390
 391 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 392 {
 393         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 394         struct brcmf_pub *drvr = bus_if->drvr;
 395
 396         /* await txstatus signal for firmware if active */
 397         if (brcmf_fws_fc_active(drvr->fws)) {
 398                 if (!success)
 399                         brcmf_fws_bustxfail(drvr->fws, txp);
 400         } else {
 401                 brcmf_txfinalize(drvr, txp, success);
 402         }
 403 }
 404
 405 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 406 {
 407         struct brcmf_if *ifp = netdev_priv(ndev);
 408
 409         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 410
 411         return &ifp->stats;
 412 }
 413
 414 /*
 415  * Set current toe component enables in toe_ol iovar,
 416  * and set toe global enable iovar
 417  */
 418 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 419 {
 420         s32 err;
 421
 422         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 423         if (err < 0) {
 424                 brcmf_err("Setting toe_ol failed, %d\n", err);
 425                 return err;
 426         }
 427
 428         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 429         if (err < 0)
 430                 brcmf_err("Setting toe failed, %d\n", err);
 431
 432         return err;
 433
 434 }
 435
 436 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 437                                     struct ethtool_drvinfo *info)
 438 {
 439         struct brcmf_if *ifp = netdev_priv(ndev);
 440         struct brcmf_pub *drvr = ifp->drvr;
 441
 442         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 443         snprintf(info->version, sizeof(info->version), "%lu",
 444                  drvr->drv_version);
 445         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 446                 sizeof(info->bus_info));
 447 }
 448
 449 static const struct ethtool_ops brcmf_ethtool_ops = {
 450         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 451 };
 452
 453 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 454 {
 455         struct brcmf_pub *drvr = ifp->drvr;
 456         struct ethtool_drvinfo info;
 457         char drvname[sizeof(info.driver)];
 458         u32 cmd;
 459         struct ethtool_value edata;
 460         u32 toe_cmpnt, csum_dir;
 461         int ret;
 462
 463         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 464
 465         /* all ethtool calls start with a cmd word */
 466         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 467                 return -EFAULT;
 468
 469         switch (cmd) {
 470         case ETHTOOL_GDRVINFO:
 471                 /* Copy out any request driver name */
 472                 if (copy_from_user(&info, uaddr, sizeof(info)))
 473                         return -EFAULT;
 474                 strncpy(drvname, info.driver, sizeof(info.driver));
 475                 drvname[sizeof(info.driver) - 1] = '\0';
 476
 477                 /* clear struct for return */
 478                 memset(&info, 0, sizeof(info));
 479                 info.cmd = cmd;
 480
 481                 /* if requested, identify ourselves */
 482                 if (strcmp(drvname, "?dhd") == 0) {
 483                         sprintf(info.driver, "dhd");
 484                         strcpy(info.version, BRCMF_VERSION_STR);
 485                 }
 486                 /* report dongle driver type */
 487                 else
 488                         sprintf(info.driver, "wl");
 489
 490                 sprintf(info.version, "%lu", drvr->drv_version);
 491                 if (copy_to_user(uaddr, &info, sizeof(info)))
 492                         return -EFAULT;
 493                 brcmf_dbg(TRACE, "given %*s, returning %s\n",
 494                           (int)sizeof(drvname), drvname, info.driver);
 495                 break;
 496
 497                 /* Get toe offload components from dongle */
 498         case ETHTOOL_GRXCSUM:
 499         case ETHTOOL_GTXCSUM:
 500                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 501                 if (ret < 0)
 502                         return ret;
 503
 504                 csum_dir =
 505                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 506
 507                 edata.cmd = cmd;
 508                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 509
 510                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 511                         return -EFAULT;
 512                 break;
 513
 514                 /* Set toe offload components in dongle */
 515         case ETHTOOL_SRXCSUM:
 516         case ETHTOOL_STXCSUM:
 517                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 518                         return -EFAULT;
 519
 520                 /* Read the current settings, update and write back */
 521                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 522                 if (ret < 0)
 523                         return ret;
 524
 525                 csum_dir =
 526                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 527
 528                 if (edata.data != 0)
 529                         toe_cmpnt |= csum_dir;
 530                 else
 531                         toe_cmpnt &= ~csum_dir;
 532
 533                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 534                 if (ret < 0)
 535                         return ret;
 536
 537                 /* If setting TX checksum mode, tell Linux the new mode */
 538                 if (cmd == ETHTOOL_STXCSUM) {
 539                         if (edata.data)
 540                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 541                         else
 542                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 543                 }
 544
 545                 break;
 546
 547         default:
 548                 return -EOPNOTSUPP;
 549         }
 550
 551         return 0;
 552 }
 553
 554 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 555                                     int cmd)
 556 {
 557         struct brcmf_if *ifp = netdev_priv(ndev);
 558         struct brcmf_pub *drvr = ifp->drvr;
 559
 560         brcmf_dbg(TRACE, "Enter, idx=%d, cmd=0x%04x\n", ifp->bssidx, cmd);
 561
 562         if (!drvr->iflist[ifp->bssidx])
 563                 return -1;
 564
 565         if (cmd == SIOCETHTOOL)
 566                 return brcmf_ethtool(ifp, ifr->ifr_data);
 567
 568         return -EOPNOTSUPP;
 569 }
 570
 571 static int brcmf_netdev_stop(struct net_device *ndev)
 572 {
 573         struct brcmf_if *ifp = netdev_priv(ndev);
 574
 575         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 576
 577         brcmf_cfg80211_down(ndev);
 578
 579         /* Set state and stop OS transmissions */
 580         netif_stop_queue(ndev);
 581
 582         return 0;
 583 }
 584
 585 static int brcmf_netdev_open(struct net_device *ndev)
 586 {
 587         struct brcmf_if *ifp = netdev_priv(ndev);
 588         struct brcmf_pub *drvr = ifp->drvr;
 589         struct brcmf_bus *bus_if = drvr->bus_if;
 590         u32 toe_ol;
 591         s32 ret = 0;
 592
 593         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 594
 595         /* If bus is not ready, can't continue */
 596         if (bus_if->state != BRCMF_BUS_DATA) {
 597                 brcmf_err("failed bus is not ready\n");
 598                 return -EAGAIN;
 599         }
 600
 601         atomic_set(&ifp->pend_8021x_cnt, 0);
 602
 603         /* Get current TOE mode from dongle */
 604         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 605             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 606                 ndev->features |= NETIF_F_IP_CSUM;
 607         else
 608                 ndev->features &= ~NETIF_F_IP_CSUM;
 609
 610         /* Allow transmit calls */
 611         netif_start_queue(ndev);
 612         if (brcmf_cfg80211_up(ndev)) {
 613                 brcmf_err("failed to bring up cfg80211\n");
 614                 return -1;
 615         }
 616
 617         return ret;
 618 }
 619
 620 static const struct net_device_ops brcmf_netdev_ops_pri = {
 621         .ndo_open = brcmf_netdev_open,
 622         .ndo_stop = brcmf_netdev_stop,
 623         .ndo_get_stats = brcmf_netdev_get_stats,
 624         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 625         .ndo_start_xmit = brcmf_netdev_start_xmit,
 626         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 627         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 628 };
 629
 630 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
 631 {
 632         struct brcmf_pub *drvr = ifp->drvr;
 633         struct net_device *ndev;
 634         s32 err;
 635
 636         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 637                   ifp->mac_addr);
 638         ndev = ifp->ndev;
 639
 640         /* set appropriate operations */
 641         ndev->netdev_ops = &brcmf_netdev_ops_pri;
 642
 643         ndev->hard_header_len += drvr->hdrlen;
 644         ndev->ethtool_ops = &brcmf_ethtool_ops;
 645
 646         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 647                               drvr->hdrlen;
 648
 649         /* set the mac address */
 650         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 651
 652         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 653         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 654
 655         if (rtnl_locked)
 656                 err = register_netdevice(ndev);
 657         else
 658                 err = register_netdev(ndev);
 659         if (err != 0) {
 660                 brcmf_err("couldn't register the net device\n");
 661                 goto fail;
 662         }
 663
 664         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 665
 666         ndev->destructor = free_netdev;
 667         return 0;
 668
 669 fail:
 670         drvr->iflist[ifp->bssidx] = NULL;
 671         ndev->netdev_ops = NULL;
 672         free_netdev(ndev);
 673         return -EBADE;
 674 }
 675
 676 static int brcmf_net_p2p_open(struct net_device *ndev)
 677 {
 678         brcmf_dbg(TRACE, "Enter\n");
 679
 680         return brcmf_cfg80211_up(ndev);
 681 }
 682
 683 static int brcmf_net_p2p_stop(struct net_device *ndev)
 684 {
 685         brcmf_dbg(TRACE, "Enter\n");
 686
 687         return brcmf_cfg80211_down(ndev);
 688 }
 689
 690 static int brcmf_net_p2p_do_ioctl(struct net_device *ndev,
 691                                   struct ifreq *ifr, int cmd)
 692 {
 693         brcmf_dbg(TRACE, "Enter\n");
 694         return 0;
 695 }
 696
 697 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
 698                                             struct net_device *ndev)
 699 {
 700         if (skb)
 701                 dev_kfree_skb_any(skb);
 702
 703         return NETDEV_TX_OK;
 704 }
 705
 706 static const struct net_device_ops brcmf_netdev_ops_p2p = {
 707         .ndo_open = brcmf_net_p2p_open,
 708         .ndo_stop = brcmf_net_p2p_stop,
 709         .ndo_do_ioctl = brcmf_net_p2p_do_ioctl,
 710         .ndo_start_xmit = brcmf_net_p2p_start_xmit
 711 };
 712
 713 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
 714 {
 715         struct net_device *ndev;
 716
 717         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 718                   ifp->mac_addr);
 719         ndev = ifp->ndev;
 720
 721         ndev->netdev_ops = &brcmf_netdev_ops_p2p;
 722
 723         /* set the mac address */
 724         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 725
 726         if (register_netdev(ndev) != 0) {
 727                 brcmf_err("couldn't register the p2p net device\n");
 728                 goto fail;
 729         }
 730
 731         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 732
 733         return 0;
 734
 735 fail:
 736         ifp->drvr->iflist[ifp->bssidx] = NULL;
 737         ndev->netdev_ops = NULL;
 738         free_netdev(ndev);
 739         return -EBADE;
 740 }
 741
 742 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
 743                               char *name, u8 *mac_addr)
 744 {
 745         struct brcmf_if *ifp;
 746         struct net_device *ndev;
 747
 748         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
 749
 750         ifp = drvr->iflist[bssidx];
 751         /*
 752          * Delete the existing interface before overwriting it
 753          * in case we missed the BRCMF_E_IF_DEL event.
 754          */
 755         if (ifp) {
 756                 brcmf_err("ERROR: netdev:%s already exists\n",
 757                           ifp->ndev->name);
 758                 if (ifidx) {
 759                         netif_stop_queue(ifp->ndev);
 760                         unregister_netdev(ifp->ndev);
 761                         free_netdev(ifp->ndev);
 762                         drvr->iflist[bssidx] = NULL;
 763                 } else {
 764                         brcmf_err("ignore IF event\n");
 765                         return ERR_PTR(-EINVAL);
 766                 }
 767         }
 768
 769         if (!brcmf_p2p_enable && bssidx == 1) {
 770                 /* this is P2P_DEVICE interface */
 771                 brcmf_dbg(INFO, "allocate non-netdev interface\n");
 772                 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
 773                 if (!ifp)
 774                         return ERR_PTR(-ENOMEM);
 775         } else {
 776                 brcmf_dbg(INFO, "allocate netdev interface\n");
 777                 /* Allocate netdev, including space for private structure */
 778                 ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
 779                 if (!ndev)
 780                         return ERR_PTR(-ENOMEM);
 781
 782                 ifp = netdev_priv(ndev);
 783                 ifp->ndev = ndev;
 784         }
 785
 786         ifp->drvr = drvr;
 787         drvr->iflist[bssidx] = ifp;
 788         ifp->ifidx = ifidx;
 789         ifp->bssidx = bssidx;
 790
 791         init_waitqueue_head(&ifp->pend_8021x_wait);
 792         spin_lock_init(&ifp->netif_stop_lock);
 793
 794         if (mac_addr != NULL)
 795                 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
 796
 797         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 798                   current->pid, name, ifp->mac_addr);
 799
 800         return ifp;
 801 }
 802
 803 void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
 804 {
 805         struct brcmf_if *ifp;
 806
 807         ifp = drvr->iflist[bssidx];
 808         drvr->iflist[bssidx] = NULL;
 809         if (!ifp) {
 810                 brcmf_err("Null interface, idx=%d\n", bssidx);
 811                 return;
 812         }
 813         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
 814         if (ifp->ndev) {
 815                 if (bssidx == 0) {
 816                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 817                                 rtnl_lock();
 818                                 brcmf_netdev_stop(ifp->ndev);
 819                                 rtnl_unlock();
 820                         }
 821                 } else {
 822                         netif_stop_queue(ifp->ndev);
 823                 }
 824
 825                 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 826                         cancel_work_sync(&ifp->setmacaddr_work);
 827                         cancel_work_sync(&ifp->multicast_work);
 828                 }
 829                 /* unregister will take care of freeing it */
 830                 unregister_netdev(ifp->ndev);
 831                 if (bssidx == 0)
 832                         brcmf_cfg80211_detach(drvr->config);
 833         } else {
 834                 kfree(ifp);
 835         }
 836 }
 837
 838 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 839 {
 840         struct brcmf_pub *drvr = NULL;
 841         int ret = 0;
 842
 843         brcmf_dbg(TRACE, "Enter\n");
 844
 845         /* Allocate primary brcmf_info */
 846         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 847         if (!drvr)
 848                 return -ENOMEM;
 849
 850         mutex_init(&drvr->proto_block);
 851
 852         /* Link to bus module */
 853         drvr->hdrlen = bus_hdrlen;
 854         drvr->bus_if = dev_get_drvdata(dev);
 855         drvr->bus_if->drvr = drvr;
 856
 857         /* create device debugfs folder */
 858         brcmf_debugfs_attach(drvr);
 859
 860         /* Attach and link in the protocol */
 861         ret = brcmf_proto_attach(drvr);
 862         if (ret != 0) {
 863                 brcmf_err("brcmf_prot_attach failed\n");
 864                 goto fail;
 865         }
 866
 867         /* attach firmware event handler */
 868         brcmf_fweh_attach(drvr);
 869
 870         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 871
 872         return ret;
 873
 874 fail:
 875         brcmf_detach(dev);
 876
 877         return ret;
 878 }
 879
 880 int brcmf_bus_start(struct device *dev)
 881 {
 882         int ret = -1;
 883         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 884         struct brcmf_pub *drvr = bus_if->drvr;
 885         struct brcmf_if *ifp;
 886         struct brcmf_if *p2p_ifp;
 887
 888         brcmf_dbg(TRACE, "\n");
 889
 890         /* Bring up the bus */
 891         ret = brcmf_bus_init(bus_if);
 892         if (ret != 0) {
 893                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 894                 return ret;
 895         }
 896
 897         /* add primary networking interface */
 898         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 899         if (IS_ERR(ifp))
 900                 return PTR_ERR(ifp);
 901
 902         if (brcmf_p2p_enable)
 903                 p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL);
 904         else
 905                 p2p_ifp = NULL;
 906         if (IS_ERR(p2p_ifp))
 907                 p2p_ifp = NULL;
 908
 909         /* signal bus ready */
 910         bus_if->state = BRCMF_BUS_DATA;
 911
 912         /* Bus is ready, do any initialization */
 913         ret = brcmf_c_preinit_dcmds(ifp);
 914         if (ret < 0)
 915                 goto fail;
 916
 917         drvr->fw_signals = true;
 918         ret = brcmf_fws_init(drvr);
 919         if (ret < 0)
 920                 goto fail;
 921
 922         brcmf_fws_add_interface(ifp);
 923
 924         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 925         if (drvr->config == NULL) {
 926                 ret = -ENOMEM;
 927                 goto fail;
 928         }
 929
 930         ret = brcmf_fweh_activate_events(ifp);
 931         if (ret < 0)
 932                 goto fail;
 933
 934         ret = brcmf_net_attach(ifp, false);
 935 fail:
 936         if (ret < 0) {
 937                 brcmf_err("failed: %d\n", ret);
 938                 if (drvr->config)
 939                         brcmf_cfg80211_detach(drvr->config);
 940                 if (drvr->fws) {
 941                         brcmf_fws_del_interface(ifp);
 942                         brcmf_fws_deinit(drvr);
 943                 }
 944                 if (p2p_ifp) {
 945                         free_netdev(p2p_ifp->ndev);
 946                         drvr->iflist[1] = NULL;
 947                 }
 948                 return ret;
 949         }
 950         if ((brcmf_p2p_enable) && (p2p_ifp))
 951                 if (brcmf_net_p2p_attach(p2p_ifp) < 0)
 952                         brcmf_p2p_enable = 0;
 953
 954         return 0;
 955 }
 956
 957 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 958 {
 959         brcmf_dbg(TRACE, "Enter\n");
 960
 961         if (drvr) {
 962                 /* Stop the protocol module */
 963                 brcmf_proto_stop(drvr);
 964
 965                 /* Stop the bus module */
 966                 brcmf_bus_stop(drvr->bus_if);
 967         }
 968 }
 969
 970 void brcmf_dev_reset(struct device *dev)
 971 {
 972         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 973         struct brcmf_pub *drvr = bus_if->drvr;
 974
 975         if (drvr == NULL)
 976                 return;
 977
 978         if (drvr->iflist[0])
 979                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 980 }
 981
 982 void brcmf_detach(struct device *dev)
 983 {
 984         s32 i;
 985         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 986         struct brcmf_pub *drvr = bus_if->drvr;
 987
 988         brcmf_dbg(TRACE, "Enter\n");
 989
 990         if (drvr == NULL)
 991                 return;
 992
 993         /* stop firmware event handling */
 994         brcmf_fweh_detach(drvr);
 995
 996         /* make sure primary interface removed last */
 997         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 998                 if (drvr->iflist[i]) {
 999                         brcmf_fws_del_interface(drvr->iflist[i]);
1000                         brcmf_del_if(drvr, i);
1001                 }
1002
1003         brcmf_bus_detach(drvr);
1004
1005         if (drvr->prot)
1006                 brcmf_proto_detach(drvr);
1007
1008         brcmf_fws_deinit(drvr);
1009
1010         brcmf_debugfs_detach(drvr);
1011         bus_if->drvr = NULL;
1012         kfree(drvr);
1013 }
1014
1015 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1016 {
1017         return atomic_read(&ifp->pend_8021x_cnt);
1018 }
1019
1020 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
1021 {
1022         struct brcmf_if *ifp = netdev_priv(ndev);
1023         int err;
1024
1025         err = wait_event_timeout(ifp->pend_8021x_wait,
1026                                  !brcmf_get_pend_8021x_cnt(ifp),
1027                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
1028
1029         WARN_ON(!err);
1030
1031         return !err;
1032 }
1033
1034 /*
1035  * return chip id and rev of the device encoded in u32.
1036  */
1037 u32 brcmf_get_chip_info(struct brcmf_if *ifp)
1038 {
1039         struct brcmf_bus *bus = ifp->drvr->bus_if;
1040
1041         return bus->chip << 4 | bus->chiprev;
1042 }
1043
1044 static void brcmf_driver_init(struct work_struct *work)
1045 {
1046         brcmf_debugfs_init();
1047
1048 #ifdef CONFIG_BRCMFMAC_SDIO
1049         brcmf_sdio_init();
1050 #endif
1051 #ifdef CONFIG_BRCMFMAC_USB
1052         brcmf_usb_init();
1053 #endif
1054 }
1055 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
1056
1057 static int __init brcmfmac_module_init(void)
1058 {
1059         if (!schedule_work(&brcmf_driver_work))
1060                 return -EBUSY;
1061
1062         return 0;
1063 }
1064
1065 static void __exit brcmfmac_module_exit(void)
1066 {
1067         cancel_work_sync(&brcmf_driver_work);
1068
1069 #ifdef CONFIG_BRCMFMAC_SDIO
1070         brcmf_sdio_exit();
1071 #endif
1072 #ifdef CONFIG_BRCMFMAC_USB
1073         brcmf_usb_exit();
1074 #endif
1075         brcmf_debugfs_exit();
1076 }
1077
1078 module_init(brcmfmac_module_init);
1079 module_exit(brcmfmac_module_exit);