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