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