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         /* handle ethernet header */
 227         eh = (struct ethhdr *)(skb->data);
 228         if (is_multicast_ether_addr(eh->h_dest))
 229                 drvr->tx_multicast++;
 230         if (ntohs(eh->h_proto) == ETH_P_PAE)
 231                 atomic_inc(&ifp->pend_8021x_cnt);
 232
 233         /* If the protocol uses a data header, apply it */
 234         brcmf_proto_hdrpush(drvr, ifp->ifidx, 0, skb);
 235
 236         /* Use bus module to send data frame */
 237         ret =  brcmf_bus_txdata(drvr->bus_if, skb);
 238
 239 done:
 240         if (ret) {
 241                 ifp->stats.tx_dropped++;
 242         } else {
 243                 ifp->stats.tx_packets++;
 244                 ifp->stats.tx_bytes += skb->len;
 245         }
 246
 247         /* Return ok: we always eat the packet */
 248         return NETDEV_TX_OK;
 249 }
 250
 251 void brcmf_txflowblock_if(struct brcmf_if *ifp,
 252                           enum brcmf_netif_stop_reason reason, bool state)
 253 {
 254         if (!ifp)
 255                 return;
 256
 257         brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
 258                   ifp->bssidx, ifp->netif_stop, reason, state);
 259         if (state) {
 260                 if (!ifp->netif_stop)
 261                         netif_stop_queue(ifp->ndev);
 262                 ifp->netif_stop |= reason;
 263         } else {
 264                 ifp->netif_stop &= ~reason;
 265                 if (!ifp->netif_stop)
 266                         netif_wake_queue(ifp->ndev);
 267         }
 268 }
 269
 270 void brcmf_txflowblock(struct device *dev, bool state)
 271 {
 272         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 273         struct brcmf_pub *drvr = bus_if->drvr;
 274         int i;
 275
 276         brcmf_dbg(TRACE, "Enter\n");
 277
 278         for (i = 0; i < BRCMF_MAX_IFS; i++)
 279                 brcmf_txflowblock_if(drvr->iflist[i],
 280                                      BRCMF_NETIF_STOP_REASON_BLOCK_BUS, state);
 281 }
 282
 283 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 284 {
 285         unsigned char *eth;
 286         uint len;
 287         struct sk_buff *skb, *pnext;
 288         struct brcmf_if *ifp;
 289         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 290         struct brcmf_pub *drvr = bus_if->drvr;
 291         u8 ifidx;
 292         int ret;
 293
 294         brcmf_dbg(TRACE, "Enter\n");
 295
 296         skb_queue_walk_safe(skb_list, skb, pnext) {
 297                 skb_unlink(skb, skb_list);
 298
 299                 /* process and remove protocol-specific header */
 300                 ret = brcmf_proto_hdrpull(drvr, drvr->fw_signals, &ifidx, skb);
 301                 ifp = drvr->iflist[ifidx];
 302
 303                 if (ret || !ifp || !ifp->ndev) {
 304                         if ((ret != -ENODATA) && ifp)
 305                                 ifp->stats.rx_errors++;
 306                         brcmu_pkt_buf_free_skb(skb);
 307                         continue;
 308                 }
 309
 310                 /* Get the protocol, maintain skb around eth_type_trans()
 311                  * The main reason for this hack is for the limitation of
 312                  * Linux 2.4 where 'eth_type_trans' uses the
 313                  * 'net->hard_header_len'
 314                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 315                  * coping of the packet coming from the network stack to add
 316                  * BDC, Hardware header etc, during network interface
 317                  * registration
 318                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 319                  * required
 320                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 321                  */
 322                 eth = skb->data;
 323                 len = skb->len;
 324
 325                 skb->dev = ifp->ndev;
 326                 skb->protocol = eth_type_trans(skb, skb->dev);
 327
 328                 if (skb->pkt_type == PACKET_MULTICAST)
 329                         ifp->stats.multicast++;
 330
 331                 skb->data = eth;
 332                 skb->len = len;
 333
 334                 /* Strip header, count, deliver upward */
 335                 skb_pull(skb, ETH_HLEN);
 336
 337                 /* Process special event packets and then discard them */
 338                 brcmf_fweh_process_skb(drvr, skb, &ifidx);
 339
 340                 if (drvr->iflist[ifidx]) {
 341                         ifp = drvr->iflist[ifidx];
 342                         ifp->ndev->last_rx = jiffies;
 343                 }
 344
 345                 if (!(ifp->ndev->flags & IFF_UP)) {
 346                         brcmu_pkt_buf_free_skb(skb);
 347                         continue;
 348                 }
 349
 350                 ifp->stats.rx_bytes += skb->len;
 351                 ifp->stats.rx_packets++;
 352
 353                 if (in_interrupt())
 354                         netif_rx(skb);
 355                 else
 356                         /* If the receive is not processed inside an ISR,
 357                          * the softirqd must be woken explicitly to service
 358                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 359                          * by netif_rx_ni(), but in earlier kernels, we need
 360                          * to do it manually.
 361                          */
 362                         netif_rx_ni(skb);
 363         }
 364 }
 365
 366 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 367 {
 368         u8 ifidx;
 369         struct ethhdr *eh;
 370         u16 type;
 371         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 372         struct brcmf_pub *drvr = bus_if->drvr;
 373         struct brcmf_if *ifp;
 374         int res;
 375
 376         res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp);
 377
 378         ifp = drvr->iflist[ifidx];
 379         if (!ifp)
 380                 goto done;
 381
 382         if (res == 0) {
 383                 eh = (struct ethhdr *)(txp->data);
 384                 type = ntohs(eh->h_proto);
 385
 386                 if (type == ETH_P_PAE) {
 387                         atomic_dec(&ifp->pend_8021x_cnt);
 388                         if (waitqueue_active(&ifp->pend_8021x_wait))
 389                                 wake_up(&ifp->pend_8021x_wait);
 390                 }
 391         }
 392         if (!success)
 393                 ifp->stats.tx_errors++;
 394
 395 done:
 396         brcmu_pkt_buf_free_skb(txp);
 397 }
 398
 399 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 400 {
 401         struct brcmf_if *ifp = netdev_priv(ndev);
 402
 403         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 404
 405         return &ifp->stats;
 406 }
 407
 408 /*
 409  * Set current toe component enables in toe_ol iovar,
 410  * and set toe global enable iovar
 411  */
 412 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 413 {
 414         s32 err;
 415
 416         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 417         if (err < 0) {
 418                 brcmf_err("Setting toe_ol failed, %d\n", err);
 419                 return err;
 420         }
 421
 422         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 423         if (err < 0)
 424                 brcmf_err("Setting toe failed, %d\n", err);
 425
 426         return err;
 427
 428 }
 429
 430 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 431                                     struct ethtool_drvinfo *info)
 432 {
 433         struct brcmf_if *ifp = netdev_priv(ndev);
 434         struct brcmf_pub *drvr = ifp->drvr;
 435
 436         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 437         snprintf(info->version, sizeof(info->version), "%lu",
 438                  drvr->drv_version);
 439         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 440                 sizeof(info->bus_info));
 441 }
 442
 443 static const struct ethtool_ops brcmf_ethtool_ops = {
 444         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 445 };
 446
 447 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 448 {
 449         struct brcmf_pub *drvr = ifp->drvr;
 450         struct ethtool_drvinfo info;
 451         char drvname[sizeof(info.driver)];
 452         u32 cmd;
 453         struct ethtool_value edata;
 454         u32 toe_cmpnt, csum_dir;
 455         int ret;
 456
 457         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 458
 459         /* all ethtool calls start with a cmd word */
 460         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 461                 return -EFAULT;
 462
 463         switch (cmd) {
 464         case ETHTOOL_GDRVINFO:
 465                 /* Copy out any request driver name */
 466                 if (copy_from_user(&info, uaddr, sizeof(info)))
 467                         return -EFAULT;
 468                 strncpy(drvname, info.driver, sizeof(info.driver));
 469                 drvname[sizeof(info.driver) - 1] = '\0';
 470
 471                 /* clear struct for return */
 472                 memset(&info, 0, sizeof(info));
 473                 info.cmd = cmd;
 474
 475                 /* if requested, identify ourselves */
 476                 if (strcmp(drvname, "?dhd") == 0) {
 477                         sprintf(info.driver, "dhd");
 478                         strcpy(info.version, BRCMF_VERSION_STR);
 479                 }
 480                 /* report dongle driver type */
 481                 else
 482                         sprintf(info.driver, "wl");
 483
 484                 sprintf(info.version, "%lu", drvr->drv_version);
 485                 if (copy_to_user(uaddr, &info, sizeof(info)))
 486                         return -EFAULT;
 487                 brcmf_dbg(TRACE, "given %*s, returning %s\n",
 488                           (int)sizeof(drvname), drvname, info.driver);
 489                 break;
 490
 491                 /* Get toe offload components from dongle */
 492         case ETHTOOL_GRXCSUM:
 493         case ETHTOOL_GTXCSUM:
 494                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 495                 if (ret < 0)
 496                         return ret;
 497
 498                 csum_dir =
 499                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 500
 501                 edata.cmd = cmd;
 502                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 503
 504                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 505                         return -EFAULT;
 506                 break;
 507
 508                 /* Set toe offload components in dongle */
 509         case ETHTOOL_SRXCSUM:
 510         case ETHTOOL_STXCSUM:
 511                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 512                         return -EFAULT;
 513
 514                 /* Read the current settings, update and write back */
 515                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 516                 if (ret < 0)
 517                         return ret;
 518
 519                 csum_dir =
 520                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 521
 522                 if (edata.data != 0)
 523                         toe_cmpnt |= csum_dir;
 524                 else
 525                         toe_cmpnt &= ~csum_dir;
 526
 527                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 528                 if (ret < 0)
 529                         return ret;
 530
 531                 /* If setting TX checksum mode, tell Linux the new mode */
 532                 if (cmd == ETHTOOL_STXCSUM) {
 533                         if (edata.data)
 534                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 535                         else
 536                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 537                 }
 538
 539                 break;
 540
 541         default:
 542                 return -EOPNOTSUPP;
 543         }
 544
 545         return 0;
 546 }
 547
 548 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 549                                     int cmd)
 550 {
 551         struct brcmf_if *ifp = netdev_priv(ndev);
 552         struct brcmf_pub *drvr = ifp->drvr;
 553
 554         brcmf_dbg(TRACE, "Enter, idx=%d, cmd=0x%04x\n", ifp->bssidx, cmd);
 555
 556         if (!drvr->iflist[ifp->bssidx])
 557                 return -1;
 558
 559         if (cmd == SIOCETHTOOL)
 560                 return brcmf_ethtool(ifp, ifr->ifr_data);
 561
 562         return -EOPNOTSUPP;
 563 }
 564
 565 static int brcmf_netdev_stop(struct net_device *ndev)
 566 {
 567         struct brcmf_if *ifp = netdev_priv(ndev);
 568
 569         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 570
 571         brcmf_cfg80211_down(ndev);
 572
 573         /* Set state and stop OS transmissions */
 574         netif_stop_queue(ndev);
 575
 576         return 0;
 577 }
 578
 579 static int brcmf_netdev_open(struct net_device *ndev)
 580 {
 581         struct brcmf_if *ifp = netdev_priv(ndev);
 582         struct brcmf_pub *drvr = ifp->drvr;
 583         struct brcmf_bus *bus_if = drvr->bus_if;
 584         u32 toe_ol;
 585         s32 ret = 0;
 586
 587         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 588
 589         /* If bus is not ready, can't continue */
 590         if (bus_if->state != BRCMF_BUS_DATA) {
 591                 brcmf_err("failed bus is not ready\n");
 592                 return -EAGAIN;
 593         }
 594
 595         atomic_set(&ifp->pend_8021x_cnt, 0);
 596
 597         /* Get current TOE mode from dongle */
 598         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 599             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 600                 ndev->features |= NETIF_F_IP_CSUM;
 601         else
 602                 ndev->features &= ~NETIF_F_IP_CSUM;
 603
 604         /* Allow transmit calls */
 605         netif_start_queue(ndev);
 606         if (brcmf_cfg80211_up(ndev)) {
 607                 brcmf_err("failed to bring up cfg80211\n");
 608                 return -1;
 609         }
 610
 611         return ret;
 612 }
 613
 614 static const struct net_device_ops brcmf_netdev_ops_pri = {
 615         .ndo_open = brcmf_netdev_open,
 616         .ndo_stop = brcmf_netdev_stop,
 617         .ndo_get_stats = brcmf_netdev_get_stats,
 618         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 619         .ndo_start_xmit = brcmf_netdev_start_xmit,
 620         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 621         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 622 };
 623
 624 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
 625 {
 626         struct brcmf_pub *drvr = ifp->drvr;
 627         struct net_device *ndev;
 628         s32 err;
 629
 630         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 631                   ifp->mac_addr);
 632         ndev = ifp->ndev;
 633
 634         /* set appropriate operations */
 635         ndev->netdev_ops = &brcmf_netdev_ops_pri;
 636
 637         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 638         ndev->ethtool_ops = &brcmf_ethtool_ops;
 639
 640         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 641                               drvr->hdrlen;
 642
 643         /* set the mac address */
 644         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 645
 646         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 647         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 648
 649         if (rtnl_locked)
 650                 err = register_netdevice(ndev);
 651         else
 652                 err = register_netdev(ndev);
 653         if (err != 0) {
 654                 brcmf_err("couldn't register the net device\n");
 655                 goto fail;
 656         }
 657
 658         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 659
 660         return 0;
 661
 662 fail:
 663         ndev->netdev_ops = NULL;
 664         return -EBADE;
 665 }
 666
 667 static int brcmf_net_p2p_open(struct net_device *ndev)
 668 {
 669         brcmf_dbg(TRACE, "Enter\n");
 670
 671         return brcmf_cfg80211_up(ndev);
 672 }
 673
 674 static int brcmf_net_p2p_stop(struct net_device *ndev)
 675 {
 676         brcmf_dbg(TRACE, "Enter\n");
 677
 678         return brcmf_cfg80211_down(ndev);
 679 }
 680
 681 static int brcmf_net_p2p_do_ioctl(struct net_device *ndev,
 682                                   struct ifreq *ifr, int cmd)
 683 {
 684         brcmf_dbg(TRACE, "Enter\n");
 685         return 0;
 686 }
 687
 688 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
 689                                             struct net_device *ndev)
 690 {
 691         if (skb)
 692                 dev_kfree_skb_any(skb);
 693
 694         return NETDEV_TX_OK;
 695 }
 696
 697 static const struct net_device_ops brcmf_netdev_ops_p2p = {
 698         .ndo_open = brcmf_net_p2p_open,
 699         .ndo_stop = brcmf_net_p2p_stop,
 700         .ndo_do_ioctl = brcmf_net_p2p_do_ioctl,
 701         .ndo_start_xmit = brcmf_net_p2p_start_xmit
 702 };
 703
 704 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
 705 {
 706         struct net_device *ndev;
 707
 708         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 709                   ifp->mac_addr);
 710         ndev = ifp->ndev;
 711
 712         ndev->netdev_ops = &brcmf_netdev_ops_p2p;
 713
 714         /* set the mac address */
 715         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 716
 717         if (register_netdev(ndev) != 0) {
 718                 brcmf_err("couldn't register the p2p net device\n");
 719                 goto fail;
 720         }
 721
 722         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 723
 724         return 0;
 725
 726 fail:
 727         return -EBADE;
 728 }
 729
 730 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
 731                               char *name, u8 *mac_addr)
 732 {
 733         struct brcmf_if *ifp;
 734         struct net_device *ndev;
 735
 736         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
 737
 738         ifp = drvr->iflist[bssidx];
 739         /*
 740          * Delete the existing interface before overwriting it
 741          * in case we missed the BRCMF_E_IF_DEL event.
 742          */
 743         if (ifp) {
 744                 brcmf_err("ERROR: netdev:%s already exists\n",
 745                           ifp->ndev->name);
 746                 if (ifidx) {
 747                         netif_stop_queue(ifp->ndev);
 748                         unregister_netdev(ifp->ndev);
 749                         free_netdev(ifp->ndev);
 750                         drvr->iflist[bssidx] = NULL;
 751                 } else {
 752                         brcmf_err("ignore IF event\n");
 753                         return ERR_PTR(-EINVAL);
 754                 }
 755         }
 756
 757         /* Allocate netdev, including space for private structure */
 758         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 759         if (!ndev) {
 760                 brcmf_err("OOM - alloc_netdev\n");
 761                 return ERR_PTR(-ENOMEM);
 762         }
 763
 764         ifp = netdev_priv(ndev);
 765         ifp->ndev = ndev;
 766         ifp->drvr = drvr;
 767         drvr->iflist[bssidx] = ifp;
 768         ifp->ifidx = ifidx;
 769         ifp->bssidx = bssidx;
 770
 771         init_waitqueue_head(&ifp->pend_8021x_wait);
 772
 773         if (mac_addr != NULL)
 774                 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
 775
 776         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 777                   current->pid, ifp->ndev->name, ifp->mac_addr);
 778
 779         return ifp;
 780 }
 781
 782 void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
 783 {
 784         struct brcmf_if *ifp;
 785
 786         ifp = drvr->iflist[bssidx];
 787         if (!ifp) {
 788                 brcmf_err("Null interface, idx=%d\n", bssidx);
 789                 return;
 790         }
 791         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
 792         if (ifp->ndev) {
 793                 if (bssidx == 0) {
 794                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 795                                 rtnl_lock();
 796                                 brcmf_netdev_stop(ifp->ndev);
 797                                 rtnl_unlock();
 798                         }
 799                 } else {
 800                         netif_stop_queue(ifp->ndev);
 801                 }
 802
 803                 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 804                         cancel_work_sync(&ifp->setmacaddr_work);
 805                         cancel_work_sync(&ifp->multicast_work);
 806                 }
 807
 808                 unregister_netdev(ifp->ndev);
 809                 drvr->iflist[bssidx] = NULL;
 810                 if (bssidx == 0)
 811                         brcmf_cfg80211_detach(drvr->config);
 812                 free_netdev(ifp->ndev);
 813         }
 814 }
 815
 816 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 817 {
 818         struct brcmf_pub *drvr = NULL;
 819         int ret = 0;
 820
 821         brcmf_dbg(TRACE, "Enter\n");
 822
 823         /* Allocate primary brcmf_info */
 824         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 825         if (!drvr)
 826                 return -ENOMEM;
 827
 828         mutex_init(&drvr->proto_block);
 829
 830         /* Link to bus module */
 831         drvr->hdrlen = bus_hdrlen;
 832         drvr->bus_if = dev_get_drvdata(dev);
 833         drvr->bus_if->drvr = drvr;
 834
 835         /* create device debugfs folder */
 836         brcmf_debugfs_attach(drvr);
 837
 838         /* Attach and link in the protocol */
 839         ret = brcmf_proto_attach(drvr);
 840         if (ret != 0) {
 841                 brcmf_err("brcmf_prot_attach failed\n");
 842                 goto fail;
 843         }
 844
 845         /* attach firmware event handler */
 846         brcmf_fweh_attach(drvr);
 847
 848         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 849
 850         return ret;
 851
 852 fail:
 853         brcmf_detach(dev);
 854
 855         return ret;
 856 }
 857
 858 int brcmf_bus_start(struct device *dev)
 859 {
 860         int ret = -1;
 861         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 862         struct brcmf_pub *drvr = bus_if->drvr;
 863         struct brcmf_if *ifp;
 864         struct brcmf_if *p2p_ifp;
 865
 866         brcmf_dbg(TRACE, "\n");
 867
 868         /* Bring up the bus */
 869         ret = brcmf_bus_init(bus_if);
 870         if (ret != 0) {
 871                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 872                 return ret;
 873         }
 874
 875         /* add primary networking interface */
 876         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 877         if (IS_ERR(ifp))
 878                 return PTR_ERR(ifp);
 879
 880         if (brcmf_p2p_enable)
 881                 p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL);
 882         else
 883                 p2p_ifp = NULL;
 884         if (IS_ERR(p2p_ifp))
 885                 p2p_ifp = NULL;
 886
 887         /* signal bus ready */
 888         bus_if->state = BRCMF_BUS_DATA;
 889
 890         /* Bus is ready, do any initialization */
 891         ret = brcmf_c_preinit_dcmds(ifp);
 892         if (ret < 0)
 893                 goto fail;
 894
 895         drvr->fw_signals = true;
 896         (void)brcmf_fws_init(drvr);
 897         brcmf_fws_add_interface(ifp);
 898
 899         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 900         if (drvr->config == NULL) {
 901                 ret = -ENOMEM;
 902                 goto fail;
 903         }
 904
 905         ret = brcmf_fweh_activate_events(ifp);
 906         if (ret < 0)
 907                 goto fail;
 908
 909         ret = brcmf_net_attach(ifp, false);
 910 fail:
 911         if (ret < 0) {
 912                 brcmf_err("failed: %d\n", ret);
 913                 if (drvr->config)
 914                         brcmf_cfg80211_detach(drvr->config);
 915                 if (drvr->fws) {
 916                         brcmf_fws_del_interface(ifp);
 917                         brcmf_fws_deinit(drvr);
 918                 }
 919                 free_netdev(ifp->ndev);
 920                 drvr->iflist[0] = NULL;
 921                 if (p2p_ifp) {
 922                         free_netdev(p2p_ifp->ndev);
 923                         drvr->iflist[1] = NULL;
 924                 }
 925                 return ret;
 926         }
 927         if ((brcmf_p2p_enable) && (p2p_ifp))
 928                 brcmf_net_p2p_attach(p2p_ifp);
 929
 930         return 0;
 931 }
 932
 933 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 934 {
 935         brcmf_dbg(TRACE, "Enter\n");
 936
 937         if (drvr) {
 938                 /* Stop the protocol module */
 939                 brcmf_proto_stop(drvr);
 940
 941                 /* Stop the bus module */
 942                 brcmf_bus_stop(drvr->bus_if);
 943         }
 944 }
 945
 946 void brcmf_dev_reset(struct device *dev)
 947 {
 948         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 949         struct brcmf_pub *drvr = bus_if->drvr;
 950
 951         if (drvr == NULL)
 952                 return;
 953
 954         if (drvr->iflist[0])
 955                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 956 }
 957
 958 void brcmf_detach(struct device *dev)
 959 {
 960         s32 i;
 961         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 962         struct brcmf_pub *drvr = bus_if->drvr;
 963
 964         brcmf_dbg(TRACE, "Enter\n");
 965
 966         if (drvr == NULL)
 967                 return;
 968
 969         /* stop firmware event handling */
 970         brcmf_fweh_detach(drvr);
 971
 972         /* make sure primary interface removed last */
 973         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 974                 if (drvr->iflist[i]) {
 975                         brcmf_fws_del_interface(drvr->iflist[i]);
 976                         brcmf_del_if(drvr, i);
 977                 }
 978
 979         brcmf_bus_detach(drvr);
 980
 981         if (drvr->prot)
 982                 brcmf_proto_detach(drvr);
 983
 984         if (drvr->fws)
 985                 brcmf_fws_deinit(drvr);
 986
 987         brcmf_debugfs_detach(drvr);
 988         bus_if->drvr = NULL;
 989         kfree(drvr);
 990 }
 991
 992 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
 993 {
 994         return atomic_read(&ifp->pend_8021x_cnt);
 995 }
 996
 997 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
 998 {
 999         struct brcmf_if *ifp = netdev_priv(ndev);
1000         int err;
1001
1002         err = wait_event_timeout(ifp->pend_8021x_wait,
1003                                  !brcmf_get_pend_8021x_cnt(ifp),
1004                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
1005
1006         WARN_ON(!err);
1007
1008         return !err;
1009 }
1010
1011 /*
1012  * return chip id and rev of the device encoded in u32.
1013  */
1014 u32 brcmf_get_chip_info(struct brcmf_if *ifp)
1015 {
1016         struct brcmf_bus *bus = ifp->drvr->bus_if;
1017
1018         return bus->chip << 4 | bus->chiprev;
1019 }
1020
1021 static void brcmf_driver_init(struct work_struct *work)
1022 {
1023         brcmf_debugfs_init();
1024
1025 #ifdef CONFIG_BRCMFMAC_SDIO
1026         brcmf_sdio_init();
1027 #endif
1028 #ifdef CONFIG_BRCMFMAC_USB
1029         brcmf_usb_init();
1030 #endif
1031 }
1032 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
1033
1034 static int __init brcmfmac_module_init(void)
1035 {
1036         if (!schedule_work(&brcmf_driver_work))
1037                 return -EBUSY;
1038
1039         return 0;
1040 }
1041
1042 static void __exit brcmfmac_module_exit(void)
1043 {
1044         cancel_work_sync(&brcmf_driver_work);
1045
1046 #ifdef CONFIG_BRCMFMAC_SDIO
1047         brcmf_sdio_exit();
1048 #endif
1049 #ifdef CONFIG_BRCMFMAC_USB
1050         brcmf_usb_exit();
1051 #endif
1052         brcmf_debugfs_exit();
1053 }
1054
1055 module_init(brcmfmac_module_init);
1056 module_exit(brcmfmac_module_exit);