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
  34 MODULE_AUTHOR("Broadcom Corporation");
  35 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
  36 MODULE_SUPPORTED_DEVICE("Broadcom 802.11 WLAN fullmac cards");
  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(brcmf_msg_level, int, 0);
  44
  45 /* P2P0 enable */
  46 static int brcmf_p2p_enable;
  47 #ifdef CONFIG_BRCMDBG
  48 module_param_named(p2pon, brcmf_p2p_enable, int, 0);
  49 MODULE_PARM_DESC(p2pon, "enable p2p management functionality");
  50 #endif
  51
  52 char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
  53 {
  54         if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
  55                 brcmf_err("ifidx %d out of range\n", ifidx);
  56                 return "<if_bad>";
  57         }
  58
  59         if (drvr->iflist[ifidx] == NULL) {
  60                 brcmf_err("null i/f %d\n", ifidx);
  61                 return "<if_null>";
  62         }
  63
  64         if (drvr->iflist[ifidx]->ndev)
  65                 return drvr->iflist[ifidx]->ndev->name;
  66
  67         return "<if_none>";
  68 }
  69
  70 static void _brcmf_set_multicast_list(struct work_struct *work)
  71 {
  72         struct brcmf_if *ifp;
  73         struct net_device *ndev;
  74         struct netdev_hw_addr *ha;
  75         u32 cmd_value, cnt;
  76         __le32 cnt_le;
  77         char *buf, *bufp;
  78         u32 buflen;
  79         s32 err;
  80
  81         ifp = container_of(work, struct brcmf_if, multicast_work);
  82
  83         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
  84
  85         ndev = ifp->ndev;
  86
  87         /* Determine initial value of allmulti flag */
  88         cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
  89
  90         /* Send down the multicast list first. */
  91         cnt = netdev_mc_count(ndev);
  92         buflen = sizeof(cnt) + (cnt * ETH_ALEN);
  93         buf = kmalloc(buflen, GFP_ATOMIC);
  94         if (!buf)
  95                 return;
  96         bufp = buf;
  97
  98         cnt_le = cpu_to_le32(cnt);
  99         memcpy(bufp, &cnt_le, sizeof(cnt_le));
 100         bufp += sizeof(cnt_le);
 101
 102         netdev_for_each_mc_addr(ha, ndev) {
 103                 if (!cnt)
 104                         break;
 105                 memcpy(bufp, ha->addr, ETH_ALEN);
 106                 bufp += ETH_ALEN;
 107                 cnt--;
 108         }
 109
 110         err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
 111         if (err < 0) {
 112                 brcmf_err("Setting mcast_list failed, %d\n", err);
 113                 cmd_value = cnt ? true : cmd_value;
 114         }
 115
 116         kfree(buf);
 117
 118         /*
 119          * Now send the allmulti setting.  This is based on the setting in the
 120          * net_device flags, but might be modified above to be turned on if we
 121          * were trying to set some addresses and dongle rejected it...
 122          */
 123         err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
 124         if (err < 0)
 125                 brcmf_err("Setting allmulti failed, %d\n", err);
 126
 127         /*Finally, pick up the PROMISC flag */
 128         cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
 129         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
 130         if (err < 0)
 131                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
 132                           err);
 133 }
 134
 135 static void
 136 _brcmf_set_mac_address(struct work_struct *work)
 137 {
 138         struct brcmf_if *ifp;
 139         s32 err;
 140
 141         ifp = container_of(work, struct brcmf_if, setmacaddr_work);
 142
 143         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 144
 145         err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
 146                                        ETH_ALEN);
 147         if (err < 0) {
 148                 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
 149         } else {
 150                 brcmf_dbg(TRACE, "MAC address updated to %pM\n",
 151                           ifp->mac_addr);
 152                 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 153         }
 154 }
 155
 156 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 157 {
 158         struct brcmf_if *ifp = netdev_priv(ndev);
 159         struct sockaddr *sa = (struct sockaddr *)addr;
 160
 161         memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
 162         schedule_work(&ifp->setmacaddr_work);
 163         return 0;
 164 }
 165
 166 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
 167 {
 168         struct brcmf_if *ifp = netdev_priv(ndev);
 169
 170         schedule_work(&ifp->multicast_work);
 171 }
 172
 173 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 174                                            struct net_device *ndev)
 175 {
 176         int ret;
 177         struct brcmf_if *ifp = netdev_priv(ndev);
 178         struct brcmf_pub *drvr = ifp->drvr;
 179         struct ethhdr *eh;
 180
 181         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 182
 183         /* Can the device send data? */
 184         if (drvr->bus_if->state != BRCMF_BUS_DATA) {
 185                 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
 186                 netif_stop_queue(ndev);
 187                 dev_kfree_skb(skb);
 188                 ret = -ENODEV;
 189                 goto done;
 190         }
 191
 192         if (!drvr->iflist[ifp->bssidx]) {
 193                 brcmf_err("bad ifidx %d\n", ifp->bssidx);
 194                 netif_stop_queue(ndev);
 195                 dev_kfree_skb(skb);
 196                 ret = -ENODEV;
 197                 goto done;
 198         }
 199
 200         /* Make sure there's enough room for any header */
 201         if (skb_headroom(skb) < drvr->hdrlen) {
 202                 struct sk_buff *skb2;
 203
 204                 brcmf_dbg(INFO, "%s: insufficient headroom\n",
 205                           brcmf_ifname(drvr, ifp->bssidx));
 206                 drvr->bus_if->tx_realloc++;
 207                 skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
 208                 dev_kfree_skb(skb);
 209                 skb = skb2;
 210                 if (skb == NULL) {
 211                         brcmf_err("%s: skb_realloc_headroom failed\n",
 212                                   brcmf_ifname(drvr, ifp->bssidx));
 213                         ret = -ENOMEM;
 214                         goto done;
 215                 }
 216         }
 217
 218         /* validate length for ether packet */
 219         if (skb->len < sizeof(*eh)) {
 220                 ret = -EINVAL;
 221                 dev_kfree_skb(skb);
 222                 goto done;
 223         }
 224
 225         /* handle ethernet header */
 226         eh = (struct ethhdr *)(skb->data);
 227         if (is_multicast_ether_addr(eh->h_dest))
 228                 drvr->tx_multicast++;
 229         if (ntohs(eh->h_proto) == ETH_P_PAE)
 230                 atomic_inc(&ifp->pend_8021x_cnt);
 231
 232         /* If the protocol uses a data header, apply it */
 233         brcmf_proto_hdrpush(drvr, ifp->ifidx, skb);
 234
 235         /* Use bus module to send data frame */
 236         ret =  brcmf_bus_txdata(drvr->bus_if, skb);
 237
 238 done:
 239         if (ret) {
 240                 ifp->stats.tx_dropped++;
 241         } else {
 242                 ifp->stats.tx_packets++;
 243                 ifp->stats.tx_bytes += skb->len;
 244         }
 245
 246         /* Return ok: we always eat the packet */
 247         return NETDEV_TX_OK;
 248 }
 249
 250 void brcmf_txflowblock(struct device *dev, bool state)
 251 {
 252         struct net_device *ndev;
 253         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 254         struct brcmf_pub *drvr = bus_if->drvr;
 255         int i;
 256
 257         brcmf_dbg(TRACE, "Enter\n");
 258
 259         for (i = 0; i < BRCMF_MAX_IFS; i++)
 260                 if (drvr->iflist[i]) {
 261                         ndev = drvr->iflist[i]->ndev;
 262                         if (state)
 263                                 netif_stop_queue(ndev);
 264                         else
 265                                 netif_wake_queue(ndev);
 266                 }
 267 }
 268
 269 void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)
 270 {
 271         unsigned char *eth;
 272         uint len;
 273         struct sk_buff *skb, *pnext;
 274         struct brcmf_if *ifp;
 275         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 276         struct brcmf_pub *drvr = bus_if->drvr;
 277         u8 ifidx;
 278         int ret;
 279
 280         brcmf_dbg(TRACE, "Enter\n");
 281
 282         skb_queue_walk_safe(skb_list, skb, pnext) {
 283                 skb_unlink(skb, skb_list);
 284
 285                 /* process and remove protocol-specific header */
 286                 ret = brcmf_proto_hdrpull(drvr, &ifidx, skb);
 287                 ifp = drvr->iflist[ifidx];
 288
 289                 if (ret || !ifp || !ifp->ndev) {
 290                         if ((ret != -ENODATA) && ifp)
 291                                 ifp->stats.rx_errors++;
 292                         brcmu_pkt_buf_free_skb(skb);
 293                         continue;
 294                 }
 295
 296                 /* Get the protocol, maintain skb around eth_type_trans()
 297                  * The main reason for this hack is for the limitation of
 298                  * Linux 2.4 where 'eth_type_trans' uses the
 299                  * 'net->hard_header_len'
 300                  * to perform skb_pull inside vs ETH_HLEN. Since to avoid
 301                  * coping of the packet coming from the network stack to add
 302                  * BDC, Hardware header etc, during network interface
 303                  * registration
 304                  * we set the 'net->hard_header_len' to ETH_HLEN + extra space
 305                  * required
 306                  * for BDC, Hardware header etc. and not just the ETH_HLEN
 307                  */
 308                 eth = skb->data;
 309                 len = skb->len;
 310
 311                 skb->dev = ifp->ndev;
 312                 skb->protocol = eth_type_trans(skb, skb->dev);
 313
 314                 if (skb->pkt_type == PACKET_MULTICAST)
 315                         ifp->stats.multicast++;
 316
 317                 skb->data = eth;
 318                 skb->len = len;
 319
 320                 /* Strip header, count, deliver upward */
 321                 skb_pull(skb, ETH_HLEN);
 322
 323                 /* Process special event packets and then discard them */
 324                 brcmf_fweh_process_skb(drvr, skb, &ifidx);
 325
 326                 if (drvr->iflist[ifidx]) {
 327                         ifp = drvr->iflist[ifidx];
 328                         ifp->ndev->last_rx = jiffies;
 329                 }
 330
 331                 if (!(ifp->ndev->flags & IFF_UP)) {
 332                         brcmu_pkt_buf_free_skb(skb);
 333                         continue;
 334                 }
 335
 336                 ifp->stats.rx_bytes += skb->len;
 337                 ifp->stats.rx_packets++;
 338
 339                 if (in_interrupt())
 340                         netif_rx(skb);
 341                 else
 342                         /* If the receive is not processed inside an ISR,
 343                          * the softirqd must be woken explicitly to service
 344                          * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
 345                          * by netif_rx_ni(), but in earlier kernels, we need
 346                          * to do it manually.
 347                          */
 348                         netif_rx_ni(skb);
 349         }
 350 }
 351
 352 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 353 {
 354         u8 ifidx;
 355         struct ethhdr *eh;
 356         u16 type;
 357         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 358         struct brcmf_pub *drvr = bus_if->drvr;
 359         struct brcmf_if *ifp;
 360
 361         brcmf_proto_hdrpull(drvr, &ifidx, txp);
 362
 363         ifp = drvr->iflist[ifidx];
 364         if (!ifp)
 365                 return;
 366
 367         eh = (struct ethhdr *)(txp->data);
 368         type = ntohs(eh->h_proto);
 369
 370         if (type == ETH_P_PAE) {
 371                 atomic_dec(&ifp->pend_8021x_cnt);
 372                 if (waitqueue_active(&ifp->pend_8021x_wait))
 373                         wake_up(&ifp->pend_8021x_wait);
 374         }
 375         if (!success)
 376                 ifp->stats.tx_errors++;
 377 }
 378
 379 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
 380 {
 381         struct brcmf_if *ifp = netdev_priv(ndev);
 382
 383         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 384
 385         return &ifp->stats;
 386 }
 387
 388 /*
 389  * Set current toe component enables in toe_ol iovar,
 390  * and set toe global enable iovar
 391  */
 392 static int brcmf_toe_set(struct brcmf_if *ifp, u32 toe_ol)
 393 {
 394         s32 err;
 395
 396         err = brcmf_fil_iovar_int_set(ifp, "toe_ol", toe_ol);
 397         if (err < 0) {
 398                 brcmf_err("Setting toe_ol failed, %d\n", err);
 399                 return err;
 400         }
 401
 402         err = brcmf_fil_iovar_int_set(ifp, "toe", (toe_ol != 0));
 403         if (err < 0)
 404                 brcmf_err("Setting toe failed, %d\n", err);
 405
 406         return err;
 407
 408 }
 409
 410 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
 411                                     struct ethtool_drvinfo *info)
 412 {
 413         struct brcmf_if *ifp = netdev_priv(ndev);
 414         struct brcmf_pub *drvr = ifp->drvr;
 415
 416         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 417         snprintf(info->version, sizeof(info->version), "%lu",
 418                  drvr->drv_version);
 419         strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
 420                 sizeof(info->bus_info));
 421 }
 422
 423 static const struct ethtool_ops brcmf_ethtool_ops = {
 424         .get_drvinfo = brcmf_ethtool_get_drvinfo,
 425 };
 426
 427 static int brcmf_ethtool(struct brcmf_if *ifp, void __user *uaddr)
 428 {
 429         struct brcmf_pub *drvr = ifp->drvr;
 430         struct ethtool_drvinfo info;
 431         char drvname[sizeof(info.driver)];
 432         u32 cmd;
 433         struct ethtool_value edata;
 434         u32 toe_cmpnt, csum_dir;
 435         int ret;
 436
 437         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 438
 439         /* all ethtool calls start with a cmd word */
 440         if (copy_from_user(&cmd, uaddr, sizeof(u32)))
 441                 return -EFAULT;
 442
 443         switch (cmd) {
 444         case ETHTOOL_GDRVINFO:
 445                 /* Copy out any request driver name */
 446                 if (copy_from_user(&info, uaddr, sizeof(info)))
 447                         return -EFAULT;
 448                 strncpy(drvname, info.driver, sizeof(info.driver));
 449                 drvname[sizeof(info.driver) - 1] = '\0';
 450
 451                 /* clear struct for return */
 452                 memset(&info, 0, sizeof(info));
 453                 info.cmd = cmd;
 454
 455                 /* if requested, identify ourselves */
 456                 if (strcmp(drvname, "?dhd") == 0) {
 457                         sprintf(info.driver, "dhd");
 458                         strcpy(info.version, BRCMF_VERSION_STR);
 459                 }
 460                 /* report dongle driver type */
 461                 else
 462                         sprintf(info.driver, "wl");
 463
 464                 sprintf(info.version, "%lu", drvr->drv_version);
 465                 if (copy_to_user(uaddr, &info, sizeof(info)))
 466                         return -EFAULT;
 467                 brcmf_dbg(TRACE, "given %*s, returning %s\n",
 468                           (int)sizeof(drvname), drvname, info.driver);
 469                 break;
 470
 471                 /* Get toe offload components from dongle */
 472         case ETHTOOL_GRXCSUM:
 473         case ETHTOOL_GTXCSUM:
 474                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 475                 if (ret < 0)
 476                         return ret;
 477
 478                 csum_dir =
 479                     (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 480
 481                 edata.cmd = cmd;
 482                 edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
 483
 484                 if (copy_to_user(uaddr, &edata, sizeof(edata)))
 485                         return -EFAULT;
 486                 break;
 487
 488                 /* Set toe offload components in dongle */
 489         case ETHTOOL_SRXCSUM:
 490         case ETHTOOL_STXCSUM:
 491                 if (copy_from_user(&edata, uaddr, sizeof(edata)))
 492                         return -EFAULT;
 493
 494                 /* Read the current settings, update and write back */
 495                 ret = brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_cmpnt);
 496                 if (ret < 0)
 497                         return ret;
 498
 499                 csum_dir =
 500                     (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
 501
 502                 if (edata.data != 0)
 503                         toe_cmpnt |= csum_dir;
 504                 else
 505                         toe_cmpnt &= ~csum_dir;
 506
 507                 ret = brcmf_toe_set(ifp, toe_cmpnt);
 508                 if (ret < 0)
 509                         return ret;
 510
 511                 /* If setting TX checksum mode, tell Linux the new mode */
 512                 if (cmd == ETHTOOL_STXCSUM) {
 513                         if (edata.data)
 514                                 ifp->ndev->features |= NETIF_F_IP_CSUM;
 515                         else
 516                                 ifp->ndev->features &= ~NETIF_F_IP_CSUM;
 517                 }
 518
 519                 break;
 520
 521         default:
 522                 return -EOPNOTSUPP;
 523         }
 524
 525         return 0;
 526 }
 527
 528 static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
 529                                     int cmd)
 530 {
 531         struct brcmf_if *ifp = netdev_priv(ndev);
 532         struct brcmf_pub *drvr = ifp->drvr;
 533
 534         brcmf_dbg(TRACE, "Enter, idx=%d, cmd=0x%04x\n", ifp->bssidx, cmd);
 535
 536         if (!drvr->iflist[ifp->bssidx])
 537                 return -1;
 538
 539         if (cmd == SIOCETHTOOL)
 540                 return brcmf_ethtool(ifp, ifr->ifr_data);
 541
 542         return -EOPNOTSUPP;
 543 }
 544
 545 static int brcmf_netdev_stop(struct net_device *ndev)
 546 {
 547         struct brcmf_if *ifp = netdev_priv(ndev);
 548
 549         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 550
 551         brcmf_cfg80211_down(ndev);
 552
 553         /* Set state and stop OS transmissions */
 554         netif_stop_queue(ndev);
 555
 556         return 0;
 557 }
 558
 559 static int brcmf_netdev_open(struct net_device *ndev)
 560 {
 561         struct brcmf_if *ifp = netdev_priv(ndev);
 562         struct brcmf_pub *drvr = ifp->drvr;
 563         struct brcmf_bus *bus_if = drvr->bus_if;
 564         u32 toe_ol;
 565         s32 ret = 0;
 566
 567         brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
 568
 569         /* If bus is not ready, can't continue */
 570         if (bus_if->state != BRCMF_BUS_DATA) {
 571                 brcmf_err("failed bus is not ready\n");
 572                 return -EAGAIN;
 573         }
 574
 575         atomic_set(&ifp->pend_8021x_cnt, 0);
 576
 577         /* Get current TOE mode from dongle */
 578         if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
 579             && (toe_ol & TOE_TX_CSUM_OL) != 0)
 580                 ndev->features |= NETIF_F_IP_CSUM;
 581         else
 582                 ndev->features &= ~NETIF_F_IP_CSUM;
 583
 584         /* Allow transmit calls */
 585         netif_start_queue(ndev);
 586         if (brcmf_cfg80211_up(ndev)) {
 587                 brcmf_err("failed to bring up cfg80211\n");
 588                 return -1;
 589         }
 590
 591         return ret;
 592 }
 593
 594 static const struct net_device_ops brcmf_netdev_ops_pri = {
 595         .ndo_open = brcmf_netdev_open,
 596         .ndo_stop = brcmf_netdev_stop,
 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, bool rtnl_locked)
 605 {
 606         struct brcmf_pub *drvr = ifp->drvr;
 607         struct net_device *ndev;
 608         s32 err;
 609
 610         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 611                   ifp->mac_addr);
 612         ndev = ifp->ndev;
 613
 614         /* set appropriate operations */
 615         ndev->netdev_ops = &brcmf_netdev_ops_pri;
 616
 617         ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
 618         ndev->ethtool_ops = &brcmf_ethtool_ops;
 619
 620         drvr->rxsz = ndev->mtu + ndev->hard_header_len +
 621                               drvr->hdrlen;
 622
 623         /* set the mac address */
 624         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 625
 626         INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
 627         INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
 628
 629         if (rtnl_locked)
 630                 err = register_netdevice(ndev);
 631         else
 632                 err = register_netdev(ndev);
 633         if (err != 0) {
 634                 brcmf_err("couldn't register the net device\n");
 635                 goto fail;
 636         }
 637
 638         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 639
 640         return 0;
 641
 642 fail:
 643         ndev->netdev_ops = NULL;
 644         return -EBADE;
 645 }
 646
 647 static int brcmf_net_p2p_open(struct net_device *ndev)
 648 {
 649         brcmf_dbg(TRACE, "Enter\n");
 650
 651         return brcmf_cfg80211_up(ndev);
 652 }
 653
 654 static int brcmf_net_p2p_stop(struct net_device *ndev)
 655 {
 656         brcmf_dbg(TRACE, "Enter\n");
 657
 658         return brcmf_cfg80211_down(ndev);
 659 }
 660
 661 static int brcmf_net_p2p_do_ioctl(struct net_device *ndev,
 662                                   struct ifreq *ifr, int cmd)
 663 {
 664         brcmf_dbg(TRACE, "Enter\n");
 665         return 0;
 666 }
 667
 668 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
 669                                             struct net_device *ndev)
 670 {
 671         if (skb)
 672                 dev_kfree_skb_any(skb);
 673
 674         return NETDEV_TX_OK;
 675 }
 676
 677 static const struct net_device_ops brcmf_netdev_ops_p2p = {
 678         .ndo_open = brcmf_net_p2p_open,
 679         .ndo_stop = brcmf_net_p2p_stop,
 680         .ndo_do_ioctl = brcmf_net_p2p_do_ioctl,
 681         .ndo_start_xmit = brcmf_net_p2p_start_xmit
 682 };
 683
 684 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
 685 {
 686         struct net_device *ndev;
 687
 688         brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
 689                   ifp->mac_addr);
 690         ndev = ifp->ndev;
 691
 692         ndev->netdev_ops = &brcmf_netdev_ops_p2p;
 693
 694         /* set the mac address */
 695         memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
 696
 697         if (register_netdev(ndev) != 0) {
 698                 brcmf_err("couldn't register the p2p net device\n");
 699                 goto fail;
 700         }
 701
 702         brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
 703
 704         return 0;
 705
 706 fail:
 707         return -EBADE;
 708 }
 709
 710 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
 711                               char *name, u8 *mac_addr)
 712 {
 713         struct brcmf_if *ifp;
 714         struct net_device *ndev;
 715
 716         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
 717
 718         ifp = drvr->iflist[bssidx];
 719         /*
 720          * Delete the existing interface before overwriting it
 721          * in case we missed the BRCMF_E_IF_DEL event.
 722          */
 723         if (ifp) {
 724                 brcmf_err("ERROR: netdev:%s already exists\n",
 725                           ifp->ndev->name);
 726                 if (ifidx) {
 727                         netif_stop_queue(ifp->ndev);
 728                         unregister_netdev(ifp->ndev);
 729                         free_netdev(ifp->ndev);
 730                         drvr->iflist[bssidx] = NULL;
 731                 } else {
 732                         brcmf_err("ignore IF event\n");
 733                         return ERR_PTR(-EINVAL);
 734                 }
 735         }
 736
 737         /* Allocate netdev, including space for private structure */
 738         ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
 739         if (!ndev) {
 740                 brcmf_err("OOM - alloc_netdev\n");
 741                 return ERR_PTR(-ENOMEM);
 742         }
 743
 744         ifp = netdev_priv(ndev);
 745         ifp->ndev = ndev;
 746         ifp->drvr = drvr;
 747         drvr->iflist[bssidx] = ifp;
 748         ifp->ifidx = ifidx;
 749         ifp->bssidx = bssidx;
 750
 751
 752         init_waitqueue_head(&ifp->pend_8021x_wait);
 753
 754         if (mac_addr != NULL)
 755                 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
 756
 757         brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
 758                   current->pid, ifp->ndev->name, ifp->mac_addr);
 759
 760         return ifp;
 761 }
 762
 763 void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
 764 {
 765         struct brcmf_if *ifp;
 766
 767         ifp = drvr->iflist[bssidx];
 768         if (!ifp) {
 769                 brcmf_err("Null interface, idx=%d\n", bssidx);
 770                 return;
 771         }
 772         brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
 773         if (ifp->ndev) {
 774                 if (bssidx == 0) {
 775                         if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 776                                 rtnl_lock();
 777                                 brcmf_netdev_stop(ifp->ndev);
 778                                 rtnl_unlock();
 779                         }
 780                 } else {
 781                         netif_stop_queue(ifp->ndev);
 782                 }
 783
 784                 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
 785                         cancel_work_sync(&ifp->setmacaddr_work);
 786                         cancel_work_sync(&ifp->multicast_work);
 787                 }
 788
 789                 unregister_netdev(ifp->ndev);
 790                 drvr->iflist[bssidx] = NULL;
 791                 if (bssidx == 0)
 792                         brcmf_cfg80211_detach(drvr->config);
 793                 free_netdev(ifp->ndev);
 794         }
 795 }
 796
 797 int brcmf_attach(uint bus_hdrlen, struct device *dev)
 798 {
 799         struct brcmf_pub *drvr = NULL;
 800         int ret = 0;
 801
 802         brcmf_dbg(TRACE, "Enter\n");
 803
 804         /* Allocate primary brcmf_info */
 805         drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
 806         if (!drvr)
 807                 return -ENOMEM;
 808
 809         mutex_init(&drvr->proto_block);
 810
 811         /* Link to bus module */
 812         drvr->hdrlen = bus_hdrlen;
 813         drvr->bus_if = dev_get_drvdata(dev);
 814         drvr->bus_if->drvr = drvr;
 815
 816         /* create device debugfs folder */
 817         brcmf_debugfs_attach(drvr);
 818
 819         /* Attach and link in the protocol */
 820         ret = brcmf_proto_attach(drvr);
 821         if (ret != 0) {
 822                 brcmf_err("brcmf_prot_attach failed\n");
 823                 goto fail;
 824         }
 825
 826         /* attach firmware event handler */
 827         brcmf_fweh_attach(drvr);
 828
 829         INIT_LIST_HEAD(&drvr->bus_if->dcmd_list);
 830
 831         return ret;
 832
 833 fail:
 834         brcmf_detach(dev);
 835
 836         return ret;
 837 }
 838
 839 int brcmf_bus_start(struct device *dev)
 840 {
 841         int ret = -1;
 842         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 843         struct brcmf_pub *drvr = bus_if->drvr;
 844         struct brcmf_if *ifp;
 845         struct brcmf_if *p2p_ifp;
 846
 847         brcmf_dbg(TRACE, "\n");
 848
 849         /* Bring up the bus */
 850         ret = brcmf_bus_init(bus_if);
 851         if (ret != 0) {
 852                 brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
 853                 return ret;
 854         }
 855
 856         /* add primary networking interface */
 857         ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
 858         if (IS_ERR(ifp))
 859                 return PTR_ERR(ifp);
 860
 861         if (brcmf_p2p_enable)
 862                 p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL);
 863         else
 864                 p2p_ifp = NULL;
 865         if (IS_ERR(p2p_ifp))
 866                 p2p_ifp = NULL;
 867
 868         /* signal bus ready */
 869         bus_if->state = BRCMF_BUS_DATA;
 870
 871         /* Bus is ready, do any initialization */
 872         ret = brcmf_c_preinit_dcmds(ifp);
 873         if (ret < 0)
 874                 goto fail;
 875
 876         drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
 877         if (drvr->config == NULL) {
 878                 ret = -ENOMEM;
 879                 goto fail;
 880         }
 881
 882         ret = brcmf_fweh_activate_events(ifp);
 883         if (ret < 0)
 884                 goto fail;
 885
 886         ret = brcmf_net_attach(ifp, false);
 887 fail:
 888         if (ret < 0) {
 889                 brcmf_err("failed: %d\n", ret);
 890                 if (drvr->config)
 891                         brcmf_cfg80211_detach(drvr->config);
 892                 free_netdev(ifp->ndev);
 893                 drvr->iflist[0] = NULL;
 894                 if (p2p_ifp) {
 895                         free_netdev(p2p_ifp->ndev);
 896                         drvr->iflist[1] = NULL;
 897                 }
 898                 return ret;
 899         }
 900         if ((brcmf_p2p_enable) && (p2p_ifp))
 901                 brcmf_net_p2p_attach(p2p_ifp);
 902
 903         return 0;
 904 }
 905
 906 static void brcmf_bus_detach(struct brcmf_pub *drvr)
 907 {
 908         brcmf_dbg(TRACE, "Enter\n");
 909
 910         if (drvr) {
 911                 /* Stop the protocol module */
 912                 brcmf_proto_stop(drvr);
 913
 914                 /* Stop the bus module */
 915                 brcmf_bus_stop(drvr->bus_if);
 916         }
 917 }
 918
 919 void brcmf_dev_reset(struct device *dev)
 920 {
 921         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 922         struct brcmf_pub *drvr = bus_if->drvr;
 923
 924         if (drvr == NULL)
 925                 return;
 926
 927         if (drvr->iflist[0])
 928                 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
 929 }
 930
 931 void brcmf_detach(struct device *dev)
 932 {
 933         s32 i;
 934         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 935         struct brcmf_pub *drvr = bus_if->drvr;
 936
 937         brcmf_dbg(TRACE, "Enter\n");
 938
 939         if (drvr == NULL)
 940                 return;
 941
 942         /* stop firmware event handling */
 943         brcmf_fweh_detach(drvr);
 944
 945         /* make sure primary interface removed last */
 946         for (i = BRCMF_MAX_IFS-1; i > -1; i--)
 947                 if (drvr->iflist[i])
 948                         brcmf_del_if(drvr, i);
 949
 950         brcmf_bus_detach(drvr);
 951
 952         if (drvr->prot)
 953                 brcmf_proto_detach(drvr);
 954
 955         brcmf_debugfs_detach(drvr);
 956         bus_if->drvr = NULL;
 957         kfree(drvr);
 958 }
 959
 960 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
 961 {
 962         return atomic_read(&ifp->pend_8021x_cnt);
 963 }
 964
 965 int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
 966 {
 967         struct brcmf_if *ifp = netdev_priv(ndev);
 968         int err;
 969
 970         err = wait_event_timeout(ifp->pend_8021x_wait,
 971                                  !brcmf_get_pend_8021x_cnt(ifp),
 972                                  msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
 973
 974         WARN_ON(!err);
 975
 976         return !err;
 977 }
 978
 979 /*
 980  * return chip id and rev of the device encoded in u32.
 981  */
 982 u32 brcmf_get_chip_info(struct brcmf_if *ifp)
 983 {
 984         struct brcmf_bus *bus = ifp->drvr->bus_if;
 985
 986         return bus->chip << 4 | bus->chiprev;
 987 }
 988
 989 static void brcmf_driver_init(struct work_struct *work)
 990 {
 991         brcmf_debugfs_init();
 992
 993 #ifdef CONFIG_BRCMFMAC_SDIO
 994         brcmf_sdio_init();
 995 #endif
 996 #ifdef CONFIG_BRCMFMAC_USB
 997         brcmf_usb_init();
 998 #endif
 999 }
1000 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
1001
1002 static int __init brcmfmac_module_init(void)
1003 {
1004         if (!schedule_work(&brcmf_driver_work))
1005                 return -EBUSY;
1006
1007         return 0;
1008 }
1009
1010 static void __exit brcmfmac_module_exit(void)
1011 {
1012         cancel_work_sync(&brcmf_driver_work);
1013
1014 #ifdef CONFIG_BRCMFMAC_SDIO
1015         brcmf_sdio_exit();
1016 #endif
1017 #ifdef CONFIG_BRCMFMAC_USB
1018         brcmf_usb_exit();
1019 #endif
1020         brcmf_debugfs_exit();
1021 }
1022
1023 module_init(brcmfmac_module_init);
1024 module_exit(brcmfmac_module_exit);