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         brcmf_dbg(TRACE, "enter\n");
  74
  75         ifp = container_of(work, struct brcmf_if, multicast_work);
  76         ndev = ifp->ndev;
  77
  78         /* Determine initial value of allmulti flag */
  79         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
  80
  81         /* Send down the multicast list first. */
  82         cnt = netdev_mc_count(ndev);
  83         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
  84         buf = kmalloc(buflen, GFP_ATOMIC);
  85         if (!buf)
  86                 return;
  87         bufp = buf;
  88
  89         cnt_le = cpu_to_le32(cnt);
  90         memcpy(bufp, &cnt_le, sizeof(cnt_le));
  91         bufp += sizeof(cnt_le);
  92
  93         netdev_for_each_mc_addr(ha, ndev) {
  94                 if (!cnt)
  95                         break;
  96                 memcpy(bufp, ha->addr, ETH_ALEN);
  97                 bufp += ETH_ALEN;
  98                 cnt--;
  99         }
 100
 101         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 102         if (err < 0) {
 103                 brcmf_err("Setting mcast_list failed, %d\n", err);
 104                 cmd_value = cnt ? true : cmd_value;
 105         }
 106
 107         kfree(buf);
 108
 109         /*
 110          * Now send the allmulti setting.  This is based on the setting in the
 111          * net_device flags, but might be modified above to be turned on if we
 112          * were trying to set some addresses and dongle rejected it...
 113          */
 114         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 115         if (err < 0)
 116                 brcmf_err("Setting allmulti failed, %d\n", err);
 117
 118         /*Finally, pick up the PROMISC flag */
 119         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 120         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 121         if (err < 0)
 122                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 123                           err);
 124 }
 125
 126 static void
 127 _brcmf_set_mac_address(struct work_struct *work)
 128 {
 129         struct brcmf_if *ifp;
 130         s32 err;
 131
 132         brcmf_dbg(TRACE, "enter\n");
 133
 134         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 135         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 136                                        ETH_ALEN);
 137         if (err < 0) {
 138                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 139         } else {
 140                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 141                           ifp->mac_addr);
 142                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 143         }
 144 }
 145
 146 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 147 {
 148         struct brcmf_if *ifp = netdev_priv(ndev);
 149         struct sockaddr *sa = (struct sockaddr *)addr;
 150
 151         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 152         schedule_work(&ifp->setmacaddr_work);
 153         return 0;
 154 }
 155
 156 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 157 {
 158         struct brcmf_if *ifp = netdev_priv(ndev);
 159
 160         schedule_work(&ifp->multicast_work);
 161 }
 162
 163 static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 164 {
 165         int ret;
 166         struct brcmf_if *ifp = netdev_priv(ndev);
 167         struct brcmf_pub *drvr = ifp->drvr;
 168         struct ethhdr *eh;
 169
 170         brcmf_dbg(TRACE, "Enter\n");
 171
 172         /* Reject if down */
 173         if (!drvr->bus_if->drvr_up ||
 174             (drvr->bus_if->state != BRCMF_BUS_DATA)) {
 175                 brcmf_err("xmit rejected drvup=%d state=%d\n",
 176                           drvr->bus_if->drvr_up,
 177                           drvr->bus_if->state);
 178                 netif_stop_queue(ndev);
 179                 return -ENODEV;
 180         }
 181
 182         if (!drvr->iflist[ifp->idx]) {
 183                 brcmf_err("bad ifidx %d\n", ifp->idx);
 184                 netif_stop_queue(ndev);
 185                 return -ENODEV;
 186         }
 187
 188         /* Make sure there's enough room for any header */
 189         if (skb_headroom(skb) < drvr->hdrlen) {
 190                 struct sk_buff *skb2;
 191
 192                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 193                           brcmf_ifname(drvr, ifp->idx));
 194                 drvr->bus_if->tx_realloc++;
 195                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 196                 dev_kfree_skb(skb);
 197                 skb = skb2;
 198                 if (skb == NULL) {
 199                         brcmf_err("%s: skb_realloc_headroom failed\n",
 200                                   brcmf_ifname(drvr, ifp->idx));
 201                         ret = -ENOMEM;
 202                         goto done;
 203                 }
 204         }
 205
 206         /* validate length for ether packet */
 207         if (skb->len < sizeof(*eh)) {
 208                 ret = -EINVAL;
 209                 dev_kfree_skb(skb);
 210                 goto done;
 211         }
 212
 213         /* handle ethernet header */
 214         eh = (struct ethhdr *)(skb->data);
 215         if (is_multicast_ether_addr(eh->h_dest))
 216                 drvr->tx_multicast++;
 217         if (ntohs(eh->h_proto) == ETH_P_PAE)
 218                 atomic_inc(&drvr->pend_8021x_cnt);
 219
 220         /* If the protocol uses a data header, apply it */
 221         brcmf_proto_hdrpush(drvr, ifp->idx, skb);
 222
 223         /* Use bus module to send data frame */
 224         ret =  brcmf_bus_txdata(drvr->bus_if, skb);
 225
 226 done:
 227         if (ret)
 228                 drvr->bus_if->dstats.tx_dropped++;
 229         else
 230                 drvr->bus_if->dstats.tx_packets++;
 231
 232         /* Return ok: we always eat the packet */
 233         return 0;
 234 }
 235
 236 void brcmf_txflowblock(struct device *dev, bool state)
 237 {
 238         struct net_device *ndev;
 239         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 240         struct brcmf_pub *drvr = bus_if->drvr;
 241         int i;
 242
 243         brcmf_dbg(TRACE, "Enter\n");
 244
 245         for (i = 0; i < BRCMF_MAX_IFS; i++)
 246                 if (drvr->iflist[i]) {
 247                         ndev = drvr->iflist[i]->ndev;
 248                         if (state)
 249                                 netif_stop_queue(ndev);
 250                         else
 251                                 netif_wake_queue(ndev);
 252                 }
 253 }
 254
 255 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 256 {
 257         unsigned char *eth;
 258         uint len;
 259         struct sk_buff *skb, *pnext;
 260         struct brcmf_if *ifp;
 261         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 262         struct brcmf_pub *drvr = bus_if->drvr;
 263         u8 ifidx;
 264         int ret;
 265
 266         brcmf_dbg(TRACE, "Enter\n");
 267
 268         skb_queue_walk_safe(skb_list, skb, pnext) {
 269                 skb_unlink(skb, skb_list);
 270
 271                 /* process and remove protocol-specific header
 272                  */
 273                 ret = brcmf_proto_hdrpull(drvr, &ifidx, skb);
 274                 if (ret < 0) {
 275                         if (ret != -ENODATA)
 276                                 bus_if->dstats.rx_errors++;
 277                         brcmu_pkt_buf_free_skb(skb);
 278                         continue;
 279                 }
 280
 281                 /* Get the protocol, maintain skb around eth_type_trans()
 282                  * The main reason for this hack is for the limitation of
 283                  * Linux 2.4 where 'eth_type_trans' uses the
 284                  * 'net->hard_header_len'
 285                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 286                  * coping of the packet coming from the network stack to add
 287                  * BDC, Hardware header etc, during network interface
 288                  * registration
 289                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 290                  * required
 291                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 292                  */
 293                 eth = skb->data;
 294                 len = skb->len;
 295
 296                 ifp = drvr->iflist[ifidx];
 297                 if (ifp == NULL)
 298                         ifp = drvr->iflist[0];
 299
 300                 if (!ifp || !ifp->ndev ||
 301                     ifp->ndev->reg_state != NETREG_REGISTERED) {
 302                         brcmu_pkt_buf_free_skb(skb);
 303                         continue;
 304                 }
 305
 306                 skb->dev = ifp->ndev;
 307                 skb->protocol = eth_type_trans(skb, skb->dev);
 308
 309                 if (skb->pkt_type == PACKET_MULTICAST)
 310                         bus_if->dstats.multicast++;
 311
 312                 skb->data = eth;
 313                 skb->len = len;
 314
 315                 /* Strip header, count, deliver upward */
 316                 skb_pull(skb, ETH_HLEN);
 317
 318                 /* Process special event packets and then discard them */
 319                 brcmf_fweh_process_skb(drvr, skb, &ifidx);
 320
 321                 if (drvr->iflist[ifidx]) {
 322                         ifp = drvr->iflist[ifidx];
 323                         ifp->ndev->last_rx = jiffies;
 324                 }
 325
 326                 bus_if->dstats.rx_bytes += skb->len;
 327                 bus_if->dstats.rx_packets++;    /* Local count */
 328
 329                 if (in_interrupt())
 330                         netif_rx(skb);
 331                 else
 332                         /* If the receive is not processed inside an ISR,
 333                          * the softirqd must be woken explicitly to service
 334                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 335                          * by netif_rx_ni(), but in earlier kernels, we need
 336                          * to do it manually.
 337                          */
 338                         netif_rx_ni(skb);
 339         }
 340 }
 341
 342 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 343 {
 344         u8 ifidx;
 345         struct ethhdr *eh;
 346         u16 type;
 347         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 348         struct brcmf_pub *drvr = bus_if->drvr;
 349
 350         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 351
 352         eh = (struct ethhdr *)(txp->data);
 353         type = ntohs(eh->h_proto);
 354
 355         if (type == ETH_P_PAE) {
 356                 atomic_dec(&drvr->pend_8021x_cnt);
 357                 if (waitqueue_active(&drvr->pend_8021x_wait))
 358                         wake_up(&drvr->pend_8021x_wait);
 359         }
 360 }
 361
 362 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 363 {
 364         struct brcmf_if *ifp = netdev_priv(ndev);
 365         struct brcmf_bus *bus_if = ifp->drvr->bus_if;
 366
 367         brcmf_dbg(TRACE, "Enter\n");
 368
 369         /* Copy dongle stats to net device stats */
 370         ifp->stats.rx_packets = bus_if->dstats.rx_packets;
 371         ifp->stats.tx_packets = bus_if->dstats.tx_packets;
 372         ifp->stats.rx_bytes = bus_if->dstats.rx_bytes;
 373         ifp->stats.tx_bytes = bus_if->dstats.tx_bytes;
 374         ifp->stats.rx_errors = bus_if->dstats.rx_errors;
 375         ifp->stats.tx_errors = bus_if->dstats.tx_errors;
 376         ifp->stats.rx_dropped = bus_if->dstats.rx_dropped;
 377         ifp->stats.tx_dropped = bus_if->dstats.tx_dropped;
 378         ifp->stats.multicast = bus_if->dstats.multicast;
 379
 380         return &ifp->stats;
 381 }
 382
 383 /*
 384  * Set current toe component enables in toe_ol iovar,
 385  * and set toe global enable iovar
 386  */
 387 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 388 {
 389         s32 err;
 390
 391         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 392         if (err < 0) {
 393                 brcmf_err("Setting toe_ol failed, %d\n", err);
 394                 return err;
 395         }
 396
 397         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 398         if (err < 0)
 399                 brcmf_err("Setting toe failed, %d\n", err);
 400
 401         return err;
 402
 403 }
 404
 405 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 406                                     struct ethtool_drvinfo *info)
 407 {
 408         struct brcmf_if *ifp = netdev_priv(ndev);
 409         struct brcmf_pub *drvr = ifp->drvr;
 410
 411         sprintf(info->driver, KBUILD_MODNAME);
 412         sprintf(info->version, "%lu", drvr->drv_version);
 413         sprintf(info->bus_info, "%s", dev_name(drvr->bus_if->dev));
 414 }
 415
 416 static const struct ethtool_ops brcmf_ethtool_ops = {
 417         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 418 };
 419
 420 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 421 {
 422         struct brcmf_pub *drvr = ifp->drvr;
 423         struct ethtool_drvinfo info;
 424         char drvname[sizeof(info.driver)];
 425         u32 cmd;
 426         struct ethtool_value edata;
 427         u32 toe_cmpnt, csum_dir;
 428         int ret;
 429
 430         brcmf_dbg(TRACE, "Enter\n");
 431
 432         /* all ethtool calls start with a cmd word */
 433         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 434                 return -EFAULT;
 435
 436         switch (cmd) {
 437         case ETHTOOL_GDRVINFO:
 438                 /* Copy out any request driver name */
 439                 if (copy_from_user(&info, uaddr, sizeof(info)))
 440                         return -EFAULT;
 441                 strncpy(drvname, info.driver, sizeof(info.driver));
 442                 drvname[sizeof(info.driver) - 1] = '\0';
 443
 444                 /* clear struct for return */
 445                 memset(&info, 0, sizeof(info));
 446                 info.cmd = cmd;
 447
 448                 /* if requested, identify ourselves */
 449                 if (strcmp(drvname, "?dhd") == 0) {
 450                         sprintf(info.driver, "dhd");
 451                         strcpy(info.version, BRCMF_VERSION_STR);
 452                 }
 453
 454                 /* otherwise, require dongle to be up */
 455                 else if (!drvr->bus_if->drvr_up) {
 456                         brcmf_err("dongle is not up\n");
 457                         return -ENODEV;
 458                 }
 459                 /* finally, report dongle driver type */
 460                 else
 461                         sprintf(info.driver, "wl");
 462
 463                 sprintf(info.version, "%lu", drvr->drv_version);
 464                 if (copy_to_user(uaddr, &info, sizeof(info)))
 465                         return -EFAULT;
 466                 brcmf_dbg(TRACE, "given %*s, returning %s\n",
 467                           (int)sizeof(drvname), drvname, info.driver);
 468                 break;
 469
 470                 /* Get toe offload components from dongle */
 471         case ETHTOOL_GRXCSUM:
 472         case ETHTOOL_GTXCSUM:
 473                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 474                 if (ret < 0)
 475                         return ret;
 476
 477                 csum_dir =
 478                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 479
 480                 edata.cmd = cmd;
 481                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 482
 483                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 484                         return -EFAULT;
 485                 break;
 486
 487                 /* Set toe offload components in dongle */
 488         case ETHTOOL_SRXCSUM:
 489         case ETHTOOL_STXCSUM:
 490                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 491                         return -EFAULT;
 492
 493                 /* Read the current settings, update and write back */
 494                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 495                 if (ret < 0)
 496                         return ret;
 497
 498                 csum_dir =
 499                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 500
 501                 if (edata.data != 0)
 502                         toe_cmpnt |= csum_dir;
 503                 else
 504                         toe_cmpnt &= ~csum_dir;
 505
 506                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 507                 if (ret < 0)
 508                         return ret;
 509
 510                 /* If setting TX checksum mode, tell Linux the new mode */
 511                 if (cmd == ETHTOOL_STXCSUM) {
 512                         if (edata.data)
 513                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 514                         else
 515                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 516                 }
 517
 518                 break;
 519
 520         default:
 521                 return -EOPNOTSUPP;
 522         }
 523
 524         return 0;
 525 }
 526
 527 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 528                                     int cmd)
 529 {
 530         struct brcmf_if *ifp = netdev_priv(ndev);
 531         struct brcmf_pub *drvr = ifp->drvr;
 532
 533         brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifp->idx, cmd);
 534
 535         if (!drvr->iflist[ifp->idx])
 536                 return -1;
 537
 538         if (cmd == SIOCETHTOOL)
 539                 return brcmf_ethtool(ifp, ifr->ifr_data);
 540
 541         return -EOPNOTSUPP;
 542 }
 543
 544 static int brcmf_netdev_stop(struct net_device *ndev)
 545 {
 546         struct brcmf_if *ifp = netdev_priv(ndev);
 547         struct brcmf_pub *drvr = ifp->drvr;
 548
 549         brcmf_dbg(TRACE, "Enter\n");
 550
 551         if (drvr->bus_if->drvr_up == 0)
 552                 return 0;
 553
 554         brcmf_cfg80211_down(ndev);
 555
 556         /* Set state and stop OS transmissions */
 557         drvr->bus_if->drvr_up = false;
 558         netif_stop_queue(ndev);
 559
 560         return 0;
 561 }
 562
 563 static int brcmf_netdev_open(struct net_device *ndev)
 564 {
 565         struct brcmf_if *ifp = netdev_priv(ndev);
 566         struct brcmf_pub *drvr = ifp->drvr;
 567         struct brcmf_bus *bus_if = drvr->bus_if;
 568         u32 toe_ol;
 569         s32 ret = 0;
 570
 571         brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
 572
 573         /* If bus is not ready, can't continue */
 574         if (bus_if->state != BRCMF_BUS_DATA) {
 575                 brcmf_err("failed bus is not ready\n");
 576                 return -EAGAIN;
 577         }
 578
 579         atomic_set(&drvr->pend_8021x_cnt, 0);
 580
 581         memcpy(ndev->dev_addr, drvr->mac, ETH_ALEN);
 582
 583         /* Get current TOE mode from dongle */
 584         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 585             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 586                 drvr->iflist[ifp->idx]->ndev->features |=
 587                         NETIF_F_IP_CSUM;
 588         else
 589                 drvr->iflist[ifp->idx]->ndev->features &=
 590                         ~NETIF_F_IP_CSUM;
 591
 592         /* make sure RF is ready for work */
 593         brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 0);
 594
 595         /* Allow transmit calls */
 596         netif_start_queue(ndev);
 597         drvr->bus_if->drvr_up = true;
 598         if (brcmf_cfg80211_up(ndev)) {
 599                 brcmf_err("failed to bring up cfg80211\n");
 600                 return -1;
 601         }
 602
 603         return ret;
 604 }
 605
 606 static const struct net_device_ops brcmf_netdev_ops_pri = {
 607         .ndo_open = brcmf_netdev_open,
 608         .ndo_stop = brcmf_netdev_stop,
 609         .ndo_get_stats = brcmf_netdev_get_stats,
 610         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 611         .ndo_start_xmit = brcmf_netdev_start_xmit,
 612         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 613         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 614 };
 615
 616 static const struct net_device_ops brcmf_netdev_ops_virt = {
 617         .ndo_open = brcmf_cfg80211_up,
 618         .ndo_stop = brcmf_cfg80211_down,
 619         .ndo_get_stats = brcmf_netdev_get_stats,
 620         .ndo_do_ioctl = brcmf_netdev_ioctl_entry,
 621         .ndo_start_xmit = brcmf_netdev_start_xmit,
 622         .ndo_set_mac_address = brcmf_netdev_set_mac_address,
 623         .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
 624 };
 625
 626 int brcmf_net_attach(struct brcmf_if *ifp)
 627 {
 628         struct brcmf_pub *drvr = ifp->drvr;
 629         struct net_device *ndev;
 630
 631         brcmf_dbg(TRACE, "ifidx %d mac %pM\n", ifp->idx, ifp->mac_addr);
 632         ndev = ifp->ndev;
 633
 634         /* set appropriate operations */
 635         if (!ifp->idx)
 636                 ndev->netdev_ops = &brcmf_netdev_ops_pri;
 637         else
 638                 ndev->netdev_ops = &brcmf_netdev_ops_virt;
 639
 640         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 641         ndev->ethtool_ops = &brcmf_ethtool_ops;
 642
 643         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 644                               drvr->hdrlen;
 645
 646         /* set the mac address */
 647         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 648
 649         if (register_netdev(ndev) != 0) {
 650                 brcmf_err("couldn't register the net device\n");
 651                 goto fail;
 652         }
 653
 654         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 655
 656         return 0;
 657
 658 fail:
 659         ndev->netdev_ops = NULL;
 660         return -EBADE;
 661 }
 662
 663 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, int ifidx, s32 bssidx,
 664                               char *name, u8 *addr_mask)
 665 {
 666         struct brcmf_if *ifp;
 667         struct net_device *ndev;
 668         int i;
 669
 670         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 671
 672         ifp = drvr->iflist[ifidx];
 673         /*
 674          * Delete the existing interface before overwriting it
 675          * in case we missed the BRCMF_E_IF_DEL event.
 676          */
 677         if (ifp) {
 678                 brcmf_err("ERROR: netdev:%s already exists\n",
 679                           ifp->ndev->name);
 680                 if (ifidx) {
 681                         netif_stop_queue(ifp->ndev);
 682                         unregister_netdev(ifp->ndev);
 683                         free_netdev(ifp->ndev);
 684                         drvr->iflist[ifidx] = NULL;
 685                 } else {
 686                         brcmf_err("ignore IF event\n");
 687                         return ERR_PTR(-EINVAL);
 688                 }
 689         }
 690
 691         /* Allocate netdev, including space for private structure */
 692         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 693         if (!ndev) {
 694                 brcmf_err("OOM - alloc_netdev\n");
 695                 return ERR_PTR(-ENOMEM);
 696         }
 697
 698         ifp = netdev_priv(ndev);
 699         ifp->ndev = ndev;
 700         ifp->drvr = drvr;
 701         drvr->iflist[ifidx] = ifp;
 702         ifp->idx = ifidx;
 703         ifp->bssidx = bssidx;
 704
 705         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 706         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 707
 708         if (addr_mask != NULL)
 709                 for (i = 0; i < ETH_ALEN; i++)
 710                         ifp->mac_addr[i] = drvr->mac[i] ^ addr_mask[i];
 711
 712         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 713                   current->pid, ifp->ndev->name, ifp->mac_addr);
 714
 715         return ifp;
 716 }
 717
 718 void brcmf_del_if(struct brcmf_pub *drvr, int ifidx)
 719 {
 720         struct brcmf_if *ifp;
 721
 722         brcmf_dbg(TRACE, "idx %d\n", ifidx);
 723
 724         ifp = drvr->iflist[ifidx];
 725         if (!ifp) {
 726                 brcmf_err("Null interface\n");
 727                 return;
 728         }
 729         if (ifp->ndev) {
 730                 if (ifidx == 0) {
 731                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 732                                 rtnl_lock();
 733                                 brcmf_netdev_stop(ifp->ndev);
 734                                 rtnl_unlock();
 735                         }
 736                 } else {
 737                         netif_stop_queue(ifp->ndev);
 738                 }
 739
 740                 cancel_work_sync(&ifp->setmacaddr_work);
 741                 cancel_work_sync(&ifp->multicast_work);
 742
 743                 unregister_netdev(ifp->ndev);
 744                 drvr->iflist[ifidx] = NULL;
 745                 if (ifidx == 0)
 746                         brcmf_cfg80211_detach(drvr->config);
 747                 free_netdev(ifp->ndev);
 748         }
 749 }
 750
 751 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 752 {
 753         struct brcmf_pub *drvr = NULL;
 754         int ret = 0;
 755
 756         brcmf_dbg(TRACE, "Enter\n");
 757
 758         /* Allocate primary brcmf_info */
 759         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 760         if (!drvr)
 761                 return -ENOMEM;
 762
 763         mutex_init(&drvr->proto_block);
 764
 765         /* Link to bus module */
 766         drvr->hdrlen = bus_hdrlen;
 767         drvr->bus_if = dev_get_drvdata(dev);
 768         drvr->bus_if->drvr = drvr;
 769
 770         /* create device debugfs folder */
 771         brcmf_debugfs_attach(drvr);
 772
 773         /* Attach and link in the protocol */
 774         ret = brcmf_proto_attach(drvr);
 775         if (ret != 0) {
 776                 brcmf_err("brcmf_prot_attach failed\n");
 777                 goto fail;
 778         }
 779
 780         /* attach firmware event handler */
 781         brcmf_fweh_attach(drvr);
 782
 783         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 784
 785         init_waitqueue_head(&drvr->pend_8021x_wait);
 786
 787         return ret;
 788
 789 fail:
 790         brcmf_detach(dev);
 791
 792         return ret;
 793 }
 794
 795 int brcmf_bus_start(struct device *dev)
 796 {
 797         int ret = -1;
 798         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 799         struct brcmf_pub *drvr = bus_if->drvr;
 800         struct brcmf_if *ifp;
 801
 802         brcmf_dbg(TRACE, "\n");
 803
 804         /* Bring up the bus */
 805         ret = brcmf_bus_init(bus_if);
 806         if (ret != 0) {
 807                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 808                 return ret;
 809         }
 810
 811         /* add primary networking interface */
 812         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 813         if (IS_ERR(ifp))
 814                 return PTR_ERR(ifp);
 815
 816         /* signal bus ready */
 817         bus_if->state = BRCMF_BUS_DATA;
 818
 819         /* Bus is ready, do any initialization */
 820         ret = brcmf_c_preinit_dcmds(ifp);
 821         if (ret < 0)
 822                 goto fail;
 823
 824         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 825         if (drvr->config == NULL) {
 826                 ret = -ENOMEM;
 827                 goto fail;
 828         }
 829
 830         ret = brcmf_fweh_activate_events(ifp);
 831         if (ret < 0)
 832                 goto fail;
 833
 834         ret = brcmf_net_attach(ifp);
 835 fail:
 836         if (ret < 0) {
 837                 brcmf_err("failed: %d\n", ret);
 838                 if (drvr->config)
 839                         brcmf_cfg80211_detach(drvr->config);
 840                 free_netdev(drvr->iflist[0]->ndev);
 841                 drvr->iflist[0] = NULL;
 842                 return ret;
 843         }
 844
 845         return 0;
 846 }
 847
 848 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 849 {
 850         brcmf_dbg(TRACE, "Enter\n");
 851
 852         if (drvr) {
 853                 /* Stop the protocol module */
 854                 brcmf_proto_stop(drvr);
 855
 856                 /* Stop the bus module */
 857                 brcmf_bus_stop(drvr->bus_if);
 858         }
 859 }
 860
 861 void brcmf_dev_reset(struct device *dev)
 862 {
 863         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 864         struct brcmf_pub *drvr = bus_if->drvr;
 865
 866         if (drvr == NULL)
 867                 return;
 868
 869         brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 870 }
 871
 872 void brcmf_detach(struct device *dev)
 873 {
 874         int i;
 875         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 876         struct brcmf_pub *drvr = bus_if->drvr;
 877
 878         brcmf_dbg(TRACE, "Enter\n");
 879
 880         if (drvr == NULL)
 881                 return;
 882
 883         /* stop firmware event handling */
 884         brcmf_fweh_detach(drvr);
 885
 886         /* make sure primary interface removed last */
 887         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 888                 if (drvr->iflist[i])
 889                         brcmf_del_if(drvr, i);
 890
 891         brcmf_bus_detach(drvr);
 892
 893         if (drvr->prot) {
 894                 brcmf_proto_detach(drvr);
 895         }
 896
 897         brcmf_debugfs_detach(drvr);
 898         bus_if->drvr = NULL;
 899         kfree(drvr);
 900 }
 901
 902 static int brcmf_get_pend_8021x_cnt(struct brcmf_pub *drvr)
 903 {
 904         return atomic_read(&drvr->pend_8021x_cnt);
 905 }
 906
 907 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
 908 {
 909         struct brcmf_if *ifp = netdev_priv(ndev);
 910         struct brcmf_pub *drvr = ifp->drvr;
 911         int err;
 912
 913         err = wait_event_timeout(drvr->pend_8021x_wait,
 914                                  !brcmf_get_pend_8021x_cnt(drvr),
 915                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
 916
 917         WARN_ON(!err);
 918
 919         return !err;
 920 }
 921
 922 static void brcmf_driver_init(struct work_struct *work)
 923 {
 924         brcmf_debugfs_init();
 925
 926 #ifdef CONFIG_BRCMFMAC_SDIO
 927         brcmf_sdio_init();
 928 #endif
 929 #ifdef CONFIG_BRCMFMAC_USB
 930         brcmf_usb_init();
 931 #endif
 932 }
 933 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
 934
 935 static int __init brcmfmac_module_init(void)
 936 {
 937         if (!schedule_work(&brcmf_driver_work))
 938                 return -EBUSY;
 939
 940         return 0;
 941 }
 942
 943 static void __exit brcmfmac_module_exit(void)
 944 {
 945         cancel_work_sync(&brcmf_driver_work);
 946
 947 #ifdef CONFIG_BRCMFMAC_SDIO
 948         brcmf_sdio_exit();
 949 #endif
 950 #ifdef CONFIG_BRCMFMAC_USB
 951         brcmf_usb_exit();
 952 #endif
 953         brcmf_debugfs_exit();
 954 }
 955
 956 module_init(brcmfmac_module_init);
 957 module_exit(brcmfmac_module_exit);