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 "wl_cfg80211.h"
  30 #include "fwil.h"
  31
  32 MODULE_AUTHOR("Broadcom Corporation");
  33 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
  34 MODULE_SUPPORTED_DEVICE("Broadcom 802.11 WLAN fullmac cards");
  35 MODULE_LICENSE("Dual BSD/GPL");
  36
  37 #define MAX_WAIT_FOR_8021X_TX           50      /* msecs */
  38
  39 /* Error bits */
  40 int brcmf_msg_level;
  41 module_param(brcmf_msg_level, int, 0);
  42
  43
  44 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
  45 {
  46         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  47                 brcmf_err("ifidx %d out of range\n", ifidx);
  48                 return "<if_bad>";
  49         }
  50
  51         if (drvr->iflist[ifidx] == NULL) {
  52                 brcmf_err("null i/f %d\n", ifidx);
  53                 return "<if_null>";
  54         }
  55
  56         if (drvr->iflist[ifidx]->ndev)
  57                 return drvr->iflist[ifidx]->ndev->name;
  58
  59         return "<if_none>";
  60 }
  61
  62 static void _brcmf_set_multicast_list(struct work_struct *work)
  63 {
  64         struct brcmf_if *ifp;
  65         struct net_device *ndev;
  66         struct netdev_hw_addr *ha;
  67         u32 cmd_value, cnt;
  68         __le32 cnt_le;
  69         char *buf, *bufp;
  70         u32 buflen;
  71         s32 err;
  72
  73         ifp = container_of(work, struct brcmf_if, multicast_work);
  74
  75         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->idx);
  76
  77         ndev = ifp->ndev;
  78
  79         /* Determine initial value of allmulti flag */
  80         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
  81
  82         /* Send down the multicast list first. */
  83         cnt = netdev_mc_count(ndev);
  84         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
  85         buf = kmalloc(buflen, GFP_ATOMIC);
  86         if (!buf)
  87                 return;
  88         bufp = buf;
  89
  90         cnt_le = cpu_to_le32(cnt);
  91         memcpy(bufp, &cnt_le, sizeof(cnt_le));
  92         bufp += sizeof(cnt_le);
  93
  94         netdev_for_each_mc_addr(ha, ndev) {
  95                 if (!cnt)
  96                         break;
  97                 memcpy(bufp, ha->addr, ETH_ALEN);
  98                 bufp += ETH_ALEN;
  99                 cnt--;
 100         }
 101
 102         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 103         if (err < 0) {
 104                 brcmf_err("Setting mcast_list failed, %d\n", err);
 105                 cmd_value = cnt ? true : cmd_value;
 106         }
 107
 108         kfree(buf);
 109
 110         /*
 111          * Now send the allmulti setting.  This is based on the setting in the
 112          * net_device flags, but might be modified above to be turned on if we
 113          * were trying to set some addresses and dongle rejected it...
 114          */
 115         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 116         if (err < 0)
 117                 brcmf_err("Setting allmulti failed, %d\n", err);
 118
 119         /*Finally, pick up the PROMISC flag */
 120         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 121         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 122         if (err < 0)
 123                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 124                           err);
 125 }
 126
 127 static void
 128 _brcmf_set_mac_address(struct work_struct *work)
 129 {
 130         struct brcmf_if *ifp;
 131         s32 err;
 132
 133         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 134
 135         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->idx);
 136
 137         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 138                                        ETH_ALEN);
 139         if (err < 0) {
 140                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 141         } else {
 142                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 143                           ifp->mac_addr);
 144                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 145         }
 146 }
 147
 148 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 149 {
 150         struct brcmf_if *ifp = netdev_priv(ndev);
 151         struct sockaddr *sa = (struct sockaddr *)addr;
 152
 153         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 154         schedule_work(&ifp->setmacaddr_work);
 155         return 0;
 156 }
 157
 158 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 159 {
 160         struct brcmf_if *ifp = netdev_priv(ndev);
 161
 162         schedule_work(&ifp->multicast_work);
 163 }
 164
 165 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 166                                            struct net_device *ndev)
 167 {
 168         int ret;
 169         struct brcmf_if *ifp = netdev_priv(ndev);
 170         struct brcmf_pub *drvr = ifp->drvr;
 171         struct ethhdr *eh;
 172
 173         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->idx);
 174
 175         /* Can the device send data? */
 176         if (drvr->bus_if->state != BRCMF_BUS_DATA) {
 177                 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
 178                 netif_stop_queue(ndev);
 179                 dev_kfree_skb(skb);
 180                 ret = -ENODEV;
 181                 goto done;
 182         }
 183
 184         if (!drvr->iflist[ifp->idx]) {
 185                 brcmf_err("bad ifidx %d\n", ifp->idx);
 186                 netif_stop_queue(ndev);
 187                 dev_kfree_skb(skb);
 188                 ret = -ENODEV;
 189                 goto done;
 190         }
 191
 192         /* Make sure there's enough room for any header */
 193         if (skb_headroom(skb) < drvr->hdrlen) {
 194                 struct sk_buff *skb2;
 195
 196                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 197                           brcmf_ifname(drvr, ifp->idx));
 198                 drvr->bus_if->tx_realloc++;
 199                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 200                 dev_kfree_skb(skb);
 201                 skb = skb2;
 202                 if (skb == NULL) {
 203                         brcmf_err("%s: skb_realloc_headroom failed\n",
 204                                   brcmf_ifname(drvr, ifp->idx));
 205                         ret = -ENOMEM;
 206                         goto done;
 207                 }
 208         }
 209
 210         /* validate length for ether packet */
 211         if (skb->len < sizeof(*eh)) {
 212                 ret = -EINVAL;
 213                 dev_kfree_skb(skb);
 214                 goto done;
 215         }
 216
 217         /* handle ethernet header */
 218         eh = (struct ethhdr *)(skb->data);
 219         if (is_multicast_ether_addr(eh->h_dest))
 220                 drvr->tx_multicast++;
 221         if (ntohs(eh->h_proto) == ETH_P_PAE)
 222                 atomic_inc(&ifp->pend_8021x_cnt);
 223
 224         /* If the protocol uses a data header, apply it */
 225         brcmf_proto_hdrpush(drvr, ifp->idx, skb);
 226
 227         /* Use bus module to send data frame */
 228         ret =  brcmf_bus_txdata(drvr->bus_if, skb);
 229
 230 done:
 231         if (ret) {
 232                 ifp->stats.tx_dropped++;
 233         } else {
 234                 ifp->stats.tx_packets++;
 235                 ifp->stats.tx_bytes += skb->len;
 236         }
 237
 238         /* Return ok: we always eat the packet */
 239         return NETDEV_TX_OK;
 240 }
 241
 242 void brcmf_txflowblock(struct device *dev, bool state)
 243 {
 244         struct net_device *ndev;
 245         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 246         struct brcmf_pub *drvr = bus_if->drvr;
 247         int i;
 248
 249         brcmf_dbg(TRACE, "Enter\n");
 250
 251         for (i = 0; i < BRCMF_MAX_IFS; i++)
 252                 if (drvr->iflist[i]) {
 253                         ndev = drvr->iflist[i]->ndev;
 254                         if (state)
 255                                 netif_stop_queue(ndev);
 256                         else
 257                                 netif_wake_queue(ndev);
 258                 }
 259 }
 260
 261 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 262 {
 263         unsigned char *eth;
 264         uint len;
 265         struct sk_buff *skb, *pnext;
 266         struct brcmf_if *ifp;
 267         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 268         struct brcmf_pub *drvr = bus_if->drvr;
 269         u8 ifidx;
 270         int ret;
 271
 272         brcmf_dbg(TRACE, "Enter\n");
 273
 274         skb_queue_walk_safe(skb_list, skb, pnext) {
 275                 skb_unlink(skb, skb_list);
 276
 277                 /* process and remove protocol-specific header */
 278                 ret = brcmf_proto_hdrpull(drvr, &ifidx, skb);
 279                 ifp = drvr->iflist[ifidx];
 280
 281                 if (ret || !ifp || !ifp->ndev) {
 282                         if ((ret != -ENODATA) && ifp)
 283                                 ifp->stats.rx_errors++;
 284                         brcmu_pkt_buf_free_skb(skb);
 285                         continue;
 286                 }
 287
 288                 /* Get the protocol, maintain skb around eth_type_trans()
 289                  * The main reason for this hack is for the limitation of
 290                  * Linux 2.4 where 'eth_type_trans' uses the
 291                  * 'net->hard_header_len'
 292                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 293                  * coping of the packet coming from the network stack to add
 294                  * BDC, Hardware header etc, during network interface
 295                  * registration
 296                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 297                  * required
 298                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 299                  */
 300                 eth = skb->data;
 301                 len = skb->len;
 302
 303                 skb->dev = ifp->ndev;
 304                 skb->protocol = eth_type_trans(skb, skb->dev);
 305
 306                 if (skb->pkt_type == PACKET_MULTICAST)
 307                         ifp->stats.multicast++;
 308
 309                 skb->data = eth;
 310                 skb->len = len;
 311
 312                 /* Strip header, count, deliver upward */
 313                 skb_pull(skb, ETH_HLEN);
 314
 315                 /* Process special event packets and then discard them */
 316                 brcmf_fweh_process_skb(drvr, skb, &ifidx);
 317
 318                 if (drvr->iflist[ifidx]) {
 319                         ifp = drvr->iflist[ifidx];
 320                         ifp->ndev->last_rx = jiffies;
 321                 }
 322
 323                 if (!(ifp->ndev->flags & IFF_UP)) {
 324                         brcmu_pkt_buf_free_skb(skb);
 325                         continue;
 326                 }
 327
 328                 ifp->stats.rx_bytes += skb->len;
 329                 ifp->stats.rx_packets++;
 330
 331                 if (in_interrupt())
 332                         netif_rx(skb);
 333                 else
 334                         /* If the receive is not processed inside an ISR,
 335                          * the softirqd must be woken explicitly to service
 336                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 337                          * by netif_rx_ni(), but in earlier kernels, we need
 338                          * to do it manually.
 339                          */
 340                         netif_rx_ni(skb);
 341         }
 342 }
 343
 344 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 345 {
 346         u8 ifidx;
 347         struct ethhdr *eh;
 348         u16 type;
 349         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 350         struct brcmf_pub *drvr = bus_if->drvr;
 351         struct brcmf_if *ifp;
 352
 353         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 354
 355         ifp = drvr->iflist[ifidx];
 356         if (!ifp)
 357                 return;
 358
 359         eh = (struct ethhdr *)(txp->data);
 360         type = ntohs(eh->h_proto);
 361
 362         if (type == ETH_P_PAE) {
 363                 atomic_dec(&ifp->pend_8021x_cnt);
 364                 if (waitqueue_active(&ifp->pend_8021x_wait))
 365                         wake_up(&ifp->pend_8021x_wait);
 366         }
 367         if (!success)
 368                 ifp->stats.tx_errors++;
 369 }
 370
 371 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 372 {
 373         struct brcmf_if *ifp = netdev_priv(ndev);
 374
 375         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->idx);
 376
 377         return &ifp->stats;
 378 }
 379
 380 /*
 381  * Set current toe component enables in toe_ol iovar,
 382  * and set toe global enable iovar
 383  */
 384 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 385 {
 386         s32 err;
 387
 388         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 389         if (err < 0) {
 390                 brcmf_err("Setting toe_ol failed, %d\n", err);
 391                 return err;
 392         }
 393
 394         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 395         if (err < 0)
 396                 brcmf_err("Setting toe failed, %d\n", err);
 397
 398         return err;
 399
 400 }
 401
 402 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 403                                     struct ethtool_drvinfo *info)
 404 {
 405         struct brcmf_if *ifp = netdev_priv(ndev);
 406         struct brcmf_pub *drvr = ifp->drvr;
 407
 408         sprintf(info->driver, KBUILD_MODNAME);
 409         sprintf(info->version, "%lu", drvr->drv_version);
 410         sprintf(info->bus_info, "%s", dev_name(drvr->bus_if->dev));
 411 }
 412
 413 static const struct ethtool_ops brcmf_ethtool_ops = {
 414         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 415 };
 416
 417 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 418 {
 419         struct brcmf_pub *drvr = ifp->drvr;
 420         struct ethtool_drvinfo info;
 421         char drvname[sizeof(info.driver)];
 422         u32 cmd;
 423         struct ethtool_value edata;
 424         u32 toe_cmpnt, csum_dir;
 425         int ret;
 426
 427         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->idx);
 428
 429         /* all ethtool calls start with a cmd word */
 430         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 431                 return -EFAULT;
 432
 433         switch (cmd) {
 434         case ETHTOOL_GDRVINFO:
 435                 /* Copy out any request driver name */
 436                 if (copy_from_user(&info, uaddr, sizeof(info)))
 437                         return -EFAULT;
 438                 strncpy(drvname, info.driver, sizeof(info.driver));
 439                 drvname[sizeof(info.driver) - 1] = '\0';
 440
 441                 /* clear struct for return */
 442                 memset(&info, 0, sizeof(info));
 443                 info.cmd = cmd;
 444
 445                 /* if requested, identify ourselves */
 446                 if (strcmp(drvname, "?dhd") == 0) {
 447                         sprintf(info.driver, "dhd");
 448                         strcpy(info.version, BRCMF_VERSION_STR);
 449                 }
 450                 /* report dongle driver type */
 451                 else
 452                         sprintf(info.driver, "wl");
 453
 454                 sprintf(info.version, "%lu", drvr->drv_version);
 455                 if (copy_to_user(uaddr, &info, sizeof(info)))
 456                         return -EFAULT;
 457                 brcmf_dbg(TRACE, "given %*s, returning %s\n",
 458                           (int)sizeof(drvname), drvname, info.driver);
 459                 break;
 460
 461                 /* Get toe offload components from dongle */
 462         case ETHTOOL_GRXCSUM:
 463         case ETHTOOL_GTXCSUM:
 464                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 465                 if (ret < 0)
 466                         return ret;
 467
 468                 csum_dir =
 469                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 470
 471                 edata.cmd = cmd;
 472                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 473
 474                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 475                         return -EFAULT;
 476                 break;
 477
 478                 /* Set toe offload components in dongle */
 479         case ETHTOOL_SRXCSUM:
 480         case ETHTOOL_STXCSUM:
 481                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 482                         return -EFAULT;
 483
 484                 /* Read the current settings, update and write back */
 485                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 486                 if (ret < 0)
 487                         return ret;
 488
 489                 csum_dir =
 490                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 491
 492                 if (edata.data != 0)
 493                         toe_cmpnt |= csum_dir;
 494                 else
 495                         toe_cmpnt &= ~csum_dir;
 496
 497                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 498                 if (ret < 0)
 499                         return ret;
 500
 501                 /* If setting TX checksum mode, tell Linux the new mode */
 502                 if (cmd == ETHTOOL_STXCSUM) {
 503                         if (edata.data)
 504                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 505                         else
 506                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 507                 }
 508
 509                 break;
 510
 511         default:
 512                 return -EOPNOTSUPP;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 519                                     int cmd)
 520 {
 521         struct brcmf_if *ifp = netdev_priv(ndev);
 522         struct brcmf_pub *drvr = ifp->drvr;
 523
 524         brcmf_dbg(TRACE, "Enter, bssidx=%d, cmd=0x%04x\n", ifp->idx, cmd);
 525
 526         if (!drvr->iflist[ifp->idx])
 527                 return -1;
 528
 529         if (cmd == SIOCETHTOOL)
 530                 return brcmf_ethtool(ifp, ifr->ifr_data);
 531
 532         return -EOPNOTSUPP;
 533 }
 534
 535 static int brcmf_netdev_stop(struct net_device *ndev)
 536 {
 537         struct brcmf_if *ifp = netdev_priv(ndev);
 538
 539         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->idx);
 540
 541         brcmf_cfg80211_down(ndev);
 542
 543         /* Set state and stop OS transmissions */
 544         netif_stop_queue(ndev);
 545
 546         return 0;
 547 }
 548
 549 static int brcmf_netdev_open(struct net_device *ndev)
 550 {
 551         struct brcmf_if *ifp = netdev_priv(ndev);
 552         struct brcmf_pub *drvr = ifp->drvr;
 553         struct brcmf_bus *bus_if = drvr->bus_if;
 554         u32 toe_ol;
 555         s32 ret = 0;
 556
 557         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->idx);
 558
 559         /* If bus is not ready, can't continue */
 560         if (bus_if->state != BRCMF_BUS_DATA) {
 561                 brcmf_err("failed bus is not ready\n");
 562                 return -EAGAIN;
 563         }
 564
 565         atomic_set(&ifp->pend_8021x_cnt, 0);
 566
 567         /* Get current TOE mode from dongle */
 568         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 569             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 570                 ndev->features |= NETIF_F_IP_CSUM;
 571         else
 572                 ndev->features &= ~NETIF_F_IP_CSUM;
 573
 574         /* Allow transmit calls */
 575         netif_start_queue(ndev);
 576         if (brcmf_cfg80211_up(ndev)) {
 577                 brcmf_err("failed to bring up cfg80211\n");
 578                 return -1;
 579         }
 580
 581         return ret;
 582 }
 583
 584 static const struct net_device_ops brcmf_netdev_ops_pri = {
 585         .ndo_open = brcmf_netdev_open,
 586         .ndo_stop = brcmf_netdev_stop,
 587         .ndo_get_stats = brcmf_netdev_get_stats,
 588         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 589         .ndo_start_xmit = brcmf_netdev_start_xmit,
 590         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 591         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 592 };
 593
 594 static const struct net_device_ops brcmf_netdev_ops_virt = {
 595         .ndo_open = brcmf_cfg80211_up,
 596         .ndo_stop = brcmf_cfg80211_down,
 597         .ndo_get_stats = brcmf_netdev_get_stats,
 598         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 599         .ndo_start_xmit = brcmf_netdev_start_xmit,
 600         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 601         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 602 };
 603
 604 int brcmf_net_attach(struct brcmf_if *ifp)
 605 {
 606         struct brcmf_pub *drvr = ifp->drvr;
 607         struct net_device *ndev;
 608
 609         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->idx,
 610                   ifp->mac_addr);
 611         ndev = ifp->ndev;
 612
 613         /* set appropriate operations */
 614         if (!ifp->idx)
 615                 ndev->netdev_ops = &brcmf_netdev_ops_pri;
 616         else
 617                 ndev->netdev_ops = &brcmf_netdev_ops_virt;
 618
 619         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 620         ndev->ethtool_ops = &brcmf_ethtool_ops;
 621
 622         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 623                               drvr->hdrlen;
 624
 625         /* set the mac address */
 626         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 627
 628         if (register_netdev(ndev) != 0) {
 629                 brcmf_err("couldn't register the net device\n");
 630                 goto fail;
 631         }
 632
 633         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 634
 635         return 0;
 636
 637 fail:
 638         ndev->netdev_ops = NULL;
 639         return -EBADE;
 640 }
 641
 642 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, int ifidx, s32 bssidx,
 643                               char *name, u8 *addr_mask)
 644 {
 645         struct brcmf_if *ifp;
 646         struct net_device *ndev;
 647         int i;
 648
 649         brcmf_dbg(TRACE, "Enter, bssidx=%d, ifidx=%d\n", bssidx, ifidx);
 650
 651         ifp = drvr->iflist[ifidx];
 652         /*
 653          * Delete the existing interface before overwriting it
 654          * in case we missed the BRCMF_E_IF_DEL event.
 655          */
 656         if (ifp) {
 657                 brcmf_err("ERROR: netdev:%s already exists\n",
 658                           ifp->ndev->name);
 659                 if (ifidx) {
 660                         netif_stop_queue(ifp->ndev);
 661                         unregister_netdev(ifp->ndev);
 662                         free_netdev(ifp->ndev);
 663                         drvr->iflist[ifidx] = NULL;
 664                 } else {
 665                         brcmf_err("ignore IF event\n");
 666                         return ERR_PTR(-EINVAL);
 667                 }
 668         }
 669
 670         /* Allocate netdev, including space for private structure */
 671         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 672         if (!ndev) {
 673                 brcmf_err("OOM - alloc_netdev\n");
 674                 return ERR_PTR(-ENOMEM);
 675         }
 676
 677         ifp = netdev_priv(ndev);
 678         ifp->ndev = ndev;
 679         ifp->drvr = drvr;
 680         drvr->iflist[ifidx] = ifp;
 681         ifp->idx = ifidx;
 682         ifp->bssidx = bssidx;
 683
 684         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 685         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 686
 687         init_waitqueue_head(&ifp->pend_8021x_wait);
 688
 689         if (addr_mask != NULL)
 690                 for (i = 0; i < ETH_ALEN; i++)
 691                         ifp->mac_addr[i] = drvr->mac[i] ^ addr_mask[i];
 692
 693         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 694                   current->pid, ifp->ndev->name, ifp->mac_addr);
 695
 696         return ifp;
 697 }
 698
 699 void brcmf_del_if(struct brcmf_pub *drvr, int ifidx)
 700 {
 701         struct brcmf_if *ifp;
 702
 703         ifp = drvr->iflist[ifidx];
 704         if (!ifp) {
 705                 brcmf_err("Null interface, idx=%d\n", ifidx);
 706                 return;
 707         }
 708         brcmf_dbg(TRACE, "Enter, idx=%d, bssidx=%d\n", ifidx, ifp->bssidx);
 709         if (ifp->ndev) {
 710                 if (ifidx == 0) {
 711                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 712                                 rtnl_lock();
 713                                 brcmf_netdev_stop(ifp->ndev);
 714                                 rtnl_unlock();
 715                         }
 716                 } else {
 717                         netif_stop_queue(ifp->ndev);
 718                 }
 719
 720                 cancel_work_sync(&ifp->setmacaddr_work);
 721                 cancel_work_sync(&ifp->multicast_work);
 722
 723                 unregister_netdev(ifp->ndev);
 724                 drvr->iflist[ifidx] = NULL;
 725                 if (ifidx == 0)
 726                         brcmf_cfg80211_detach(drvr->config);
 727                 free_netdev(ifp->ndev);
 728         }
 729 }
 730
 731 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 732 {
 733         struct brcmf_pub *drvr = NULL;
 734         int ret = 0;
 735
 736         brcmf_dbg(TRACE, "Enter\n");
 737
 738         /* Allocate primary brcmf_info */
 739         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 740         if (!drvr)
 741                 return -ENOMEM;
 742
 743         mutex_init(&drvr->proto_block);
 744
 745         /* Link to bus module */
 746         drvr->hdrlen = bus_hdrlen;
 747         drvr->bus_if = dev_get_drvdata(dev);
 748         drvr->bus_if->drvr = drvr;
 749
 750         /* create device debugfs folder */
 751         brcmf_debugfs_attach(drvr);
 752
 753         /* Attach and link in the protocol */
 754         ret = brcmf_proto_attach(drvr);
 755         if (ret != 0) {
 756                 brcmf_err("brcmf_prot_attach failed\n");
 757                 goto fail;
 758         }
 759
 760         /* attach firmware event handler */
 761         brcmf_fweh_attach(drvr);
 762
 763         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 764
 765         return ret;
 766
 767 fail:
 768         brcmf_detach(dev);
 769
 770         return ret;
 771 }
 772
 773 int brcmf_bus_start(struct device *dev)
 774 {
 775         int ret = -1;
 776         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 777         struct brcmf_pub *drvr = bus_if->drvr;
 778         struct brcmf_if *ifp;
 779
 780         brcmf_dbg(TRACE, "\n");
 781
 782         /* Bring up the bus */
 783         ret = brcmf_bus_init(bus_if);
 784         if (ret != 0) {
 785                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 786                 return ret;
 787         }
 788
 789         /* add primary networking interface */
 790         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 791         if (IS_ERR(ifp))
 792                 return PTR_ERR(ifp);
 793
 794         /* signal bus ready */
 795         bus_if->state = BRCMF_BUS_DATA;
 796
 797         /* Bus is ready, do any initialization */
 798         ret = brcmf_c_preinit_dcmds(ifp);
 799         if (ret < 0)
 800                 goto fail;
 801
 802         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 803         if (drvr->config == NULL) {
 804                 ret = -ENOMEM;
 805                 goto fail;
 806         }
 807
 808         ret = brcmf_fweh_activate_events(ifp);
 809         if (ret < 0)
 810                 goto fail;
 811
 812         ret = brcmf_net_attach(ifp);
 813 fail:
 814         if (ret < 0) {
 815                 brcmf_err("failed: %d\n", ret);
 816                 if (drvr->config)
 817                         brcmf_cfg80211_detach(drvr->config);
 818                 free_netdev(drvr->iflist[0]->ndev);
 819                 drvr->iflist[0] = NULL;
 820                 return ret;
 821         }
 822
 823         return 0;
 824 }
 825
 826 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 827 {
 828         brcmf_dbg(TRACE, "Enter\n");
 829
 830         if (drvr) {
 831                 /* Stop the protocol module */
 832                 brcmf_proto_stop(drvr);
 833
 834                 /* Stop the bus module */
 835                 brcmf_bus_stop(drvr->bus_if);
 836         }
 837 }
 838
 839 void brcmf_dev_reset(struct device *dev)
 840 {
 841         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 842         struct brcmf_pub *drvr = bus_if->drvr;
 843
 844         if (drvr == NULL)
 845                 return;
 846
 847         brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 848 }
 849
 850 void brcmf_detach(struct device *dev)
 851 {
 852         int i;
 853         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 854         struct brcmf_pub *drvr = bus_if->drvr;
 855
 856         brcmf_dbg(TRACE, "Enter\n");
 857
 858         if (drvr == NULL)
 859                 return;
 860
 861         /* stop firmware event handling */
 862         brcmf_fweh_detach(drvr);
 863
 864         /* make sure primary interface removed last */
 865         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 866                 if (drvr->iflist[i])
 867                         brcmf_del_if(drvr, i);
 868
 869         brcmf_bus_detach(drvr);
 870
 871         if (drvr->prot)
 872                 brcmf_proto_detach(drvr);
 873
 874         brcmf_debugfs_detach(drvr);
 875         bus_if->drvr = NULL;
 876         kfree(drvr);
 877 }
 878
 879 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
 880 {
 881         return atomic_read(&ifp->pend_8021x_cnt);
 882 }
 883
 884 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
 885 {
 886         struct brcmf_if *ifp = netdev_priv(ndev);
 887         int err;
 888
 889         err = wait_event_timeout(ifp->pend_8021x_wait,
 890                                  !brcmf_get_pend_8021x_cnt(ifp),
 891                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
 892
 893         WARN_ON(!err);
 894
 895         return !err;
 896 }
 897
 898 /*
 899  * return chip id and rev of the device encoded in u32.
 900  */
 901 u32 brcmf_get_chip_info(struct brcmf_if *ifp)
 902 {
 903         struct brcmf_bus *bus = ifp->drvr->bus_if;
 904
 905         return bus->chip << 4 | bus->chiprev;
 906 }
 907
 908 static void brcmf_driver_init(struct work_struct *work)
 909 {
 910         brcmf_debugfs_init();
 911
 912 #ifdef CONFIG_BRCMFMAC_SDIO
 913         brcmf_sdio_init();
 914 #endif
 915 #ifdef CONFIG_BRCMFMAC_USB
 916         brcmf_usb_init();
 917 #endif
 918 }
 919 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
 920
 921 static int __init brcmfmac_module_init(void)
 922 {
 923         if (!schedule_work(&brcmf_driver_work))
 924                 return -EBUSY;
 925
 926         return 0;
 927 }
 928
 929 static void __exit brcmfmac_module_exit(void)
 930 {
 931         cancel_work_sync(&brcmf_driver_work);
 932
 933 #ifdef CONFIG_BRCMFMAC_SDIO
 934         brcmf_sdio_exit();
 935 #endif
 936 #ifdef CONFIG_BRCMFMAC_USB
 937         brcmf_usb_exit();
 938 #endif
 939         brcmf_debugfs_exit();
 940 }
 941
 942 module_init(brcmfmac_module_init);
 943 module_exit(brcmfmac_module_exit);