drivers/staging/wilc1000/wilc_wlan.c

   1 #include "wilc_wlan_if.h"
   2 #include "wilc_wlan.h"
   3 #include "wilc_wfi_netdevice.h"
   4 #include "wilc_wlan_cfg.h"
   5
   6 static CHIP_PS_STATE_T chip_ps_state = CHIP_WAKEDUP;
   7
   8 static inline void acquire_bus(struct wilc *wilc, BUS_ACQUIRE_T acquire)
   9 {
  10         mutex_lock(&wilc->hif_cs);
  11         if (acquire == ACQUIRE_AND_WAKEUP)
  12                 chip_wakeup(wilc);
  13 }
  14
  15 static inline void release_bus(struct wilc *wilc, BUS_RELEASE_T release)
  16 {
  17         if (release == RELEASE_ALLOW_SLEEP)
  18                 chip_allow_sleep(wilc);
  19         mutex_unlock(&wilc->hif_cs);
  20 }
  21
  22 static void wilc_wlan_txq_remove(struct wilc *wilc, struct txq_entry_t *tqe)
  23 {
  24         if (tqe == wilc->txq_head) {
  25                 wilc->txq_head = tqe->next;
  26                 if (wilc->txq_head)
  27                         wilc->txq_head->prev = NULL;
  28         } else if (tqe == wilc->txq_tail) {
  29                 wilc->txq_tail = (tqe->prev);
  30                 if (wilc->txq_tail)
  31                         wilc->txq_tail->next = NULL;
  32         } else {
  33                 tqe->prev->next = tqe->next;
  34                 tqe->next->prev = tqe->prev;
  35         }
  36         wilc->txq_entries -= 1;
  37 }
  38
  39 static struct txq_entry_t *
  40 wilc_wlan_txq_remove_from_head(struct net_device *dev)
  41 {
  42         struct txq_entry_t *tqe;
  43         unsigned long flags;
  44         struct wilc_vif *vif;
  45         struct wilc *wilc;
  46
  47         vif = netdev_priv(dev);
  48         wilc = vif->wilc;
  49
  50         spin_lock_irqsave(&wilc->txq_spinlock, flags);
  51         if (wilc->txq_head) {
  52                 tqe = wilc->txq_head;
  53                 wilc->txq_head = tqe->next;
  54                 if (wilc->txq_head)
  55                         wilc->txq_head->prev = NULL;
  56
  57                 wilc->txq_entries -= 1;
  58         } else {
  59                 tqe = NULL;
  60         }
  61         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
  62         return tqe;
  63 }
  64
  65 static void wilc_wlan_txq_add_to_tail(struct net_device *dev,
  66                                       struct txq_entry_t *tqe)
  67 {
  68         unsigned long flags;
  69         struct wilc_vif *vif;
  70         struct wilc *wilc;
  71
  72         vif = netdev_priv(dev);
  73         wilc = vif->wilc;
  74
  75         spin_lock_irqsave(&wilc->txq_spinlock, flags);
  76
  77         if (!wilc->txq_head) {
  78                 tqe->next = NULL;
  79                 tqe->prev = NULL;
  80                 wilc->txq_head = tqe;
  81                 wilc->txq_tail = tqe;
  82         } else {
  83                 tqe->next = NULL;
  84                 tqe->prev = wilc->txq_tail;
  85                 wilc->txq_tail->next = tqe;
  86                 wilc->txq_tail = tqe;
  87         }
  88         wilc->txq_entries += 1;
  89
  90         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
  91
  92         up(&wilc->txq_event);
  93 }
  94
  95 static int wilc_wlan_txq_add_to_head(struct wilc_vif *vif,
  96                                      struct txq_entry_t *tqe)
  97 {
  98         unsigned long flags;
  99         struct wilc *wilc = vif->wilc;
 100
 101         if (wilc_lock_timeout(wilc, &wilc->txq_add_to_head_cs,
 102                                     CFG_PKTS_TIMEOUT))
 103                 return -1;
 104
 105         spin_lock_irqsave(&wilc->txq_spinlock, flags);
 106
 107         if (!wilc->txq_head) {
 108                 tqe->next = NULL;
 109                 tqe->prev = NULL;
 110                 wilc->txq_head = tqe;
 111                 wilc->txq_tail = tqe;
 112         } else {
 113                 tqe->next = wilc->txq_head;
 114                 tqe->prev = NULL;
 115                 wilc->txq_head->prev = tqe;
 116                 wilc->txq_head = tqe;
 117         }
 118         wilc->txq_entries += 1;
 119
 120         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 121         up(&wilc->txq_add_to_head_cs);
 122         up(&wilc->txq_event);
 123
 124         return 0;
 125 }
 126
 127 struct ack_session_info;
 128 struct ack_session_info {
 129         u32 seq_num;
 130         u32 bigger_ack_num;
 131         u16 src_port;
 132         u16 dst_port;
 133         u16 status;
 134 };
 135
 136 struct pending_acks_info {
 137         u32 ack_num;
 138         u32 session_index;
 139         struct txq_entry_t  *txqe;
 140 };
 141
 142 #define NOT_TCP_ACK                     (-1)
 143
 144 #define MAX_TCP_SESSION         25
 145 #define MAX_PENDING_ACKS                256
 146 static struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
 147 static struct pending_acks_info pending_acks_info[MAX_PENDING_ACKS];
 148
 149 static u32 pending_base;
 150 static u32 tcp_session;
 151 static u32 pending_acks;
 152
 153 static inline int init_tcp_tracking(void)
 154 {
 155         return 0;
 156 }
 157
 158 static inline int add_tcp_session(u32 src_prt, u32 dst_prt, u32 seq)
 159 {
 160         if (tcp_session < 2 * MAX_TCP_SESSION) {
 161                 ack_session_info[tcp_session].seq_num = seq;
 162                 ack_session_info[tcp_session].bigger_ack_num = 0;
 163                 ack_session_info[tcp_session].src_port = src_prt;
 164                 ack_session_info[tcp_session].dst_port = dst_prt;
 165                 tcp_session++;
 166         }
 167         return 0;
 168 }
 169
 170 static inline int update_tcp_session(u32 index, u32 ack)
 171 {
 172         if (index < 2 * MAX_TCP_SESSION &&
 173             ack > ack_session_info[index].bigger_ack_num)
 174                 ack_session_info[index].bigger_ack_num = ack;
 175         return 0;
 176 }
 177
 178 static inline int add_tcp_pending_ack(u32 ack, u32 session_index,
 179                                       struct txq_entry_t *txqe)
 180 {
 181         if (pending_base + pending_acks < MAX_PENDING_ACKS) {
 182                 pending_acks_info[pending_base + pending_acks].ack_num = ack;
 183                 pending_acks_info[pending_base + pending_acks].txqe = txqe;
 184                 pending_acks_info[pending_base + pending_acks].session_index = session_index;
 185                 txqe->tcp_pending_ack_idx = pending_base + pending_acks;
 186                 pending_acks++;
 187         }
 188         return 0;
 189 }
 190
 191 static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
 192 {
 193         u8 *eth_hdr_ptr;
 194         u8 *buffer = tqe->buffer;
 195         unsigned short h_proto;
 196         int i;
 197         unsigned long flags;
 198         struct wilc_vif *vif;
 199         struct wilc *wilc;
 200
 201         vif = netdev_priv(dev);
 202         wilc = vif->wilc;
 203
 204         spin_lock_irqsave(&wilc->txq_spinlock, flags);
 205
 206         eth_hdr_ptr = &buffer[0];
 207         h_proto = ntohs(*((unsigned short *)&eth_hdr_ptr[12]));
 208         if (h_proto == ETH_P_IP) {
 209                 u8 *ip_hdr_ptr;
 210                 u8 protocol;
 211
 212                 ip_hdr_ptr = &buffer[ETHERNET_HDR_LEN];
 213                 protocol = ip_hdr_ptr[9];
 214
 215                 if (protocol == 0x06) {
 216                         u8 *tcp_hdr_ptr;
 217                         u32 IHL, total_length, data_offset;
 218
 219                         tcp_hdr_ptr = &ip_hdr_ptr[IP_HDR_LEN];
 220                         IHL = (ip_hdr_ptr[0] & 0xf) << 2;
 221                         total_length = ((u32)ip_hdr_ptr[2] << 8) +
 222                                         (u32)ip_hdr_ptr[3];
 223                         data_offset = ((u32)tcp_hdr_ptr[12] & 0xf0) >> 2;
 224                         if (total_length == (IHL + data_offset)) {
 225                                 u32 seq_no, ack_no;
 226
 227                                 seq_no = ((u32)tcp_hdr_ptr[4] << 24) +
 228                                          ((u32)tcp_hdr_ptr[5] << 16) +
 229                                          ((u32)tcp_hdr_ptr[6] << 8) +
 230                                          (u32)tcp_hdr_ptr[7];
 231
 232                                 ack_no = ((u32)tcp_hdr_ptr[8] << 24) +
 233                                          ((u32)tcp_hdr_ptr[9] << 16) +
 234                                          ((u32)tcp_hdr_ptr[10] << 8) +
 235                                          (u32)tcp_hdr_ptr[11];
 236
 237                                 for (i = 0; i < tcp_session; i++) {
 238                                         if (i < 2 * MAX_TCP_SESSION &&
 239                                             ack_session_info[i].seq_num == seq_no) {
 240                                                 update_tcp_session(i, ack_no);
 241                                                 break;
 242                                         }
 243                                 }
 244                                 if (i == tcp_session)
 245                                         add_tcp_session(0, 0, seq_no);
 246
 247                                 add_tcp_pending_ack(ack_no, i, tqe);
 248                         }
 249                 }
 250         }
 251         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 252 }
 253
 254 static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
 255 {
 256         struct wilc_vif *vif;
 257         struct wilc *wilc;
 258         u32 i = 0;
 259         u32 dropped = 0;
 260
 261         vif = netdev_priv(dev);
 262         wilc = vif->wilc;
 263
 264         spin_lock_irqsave(&wilc->txq_spinlock, wilc->txq_spinlock_flags);
 265         for (i = pending_base; i < (pending_base + pending_acks); i++) {
 266                 if (i >= MAX_PENDING_ACKS ||
 267                     pending_acks_info[i].session_index >= 2 * MAX_TCP_SESSION)
 268                         break;
 269                 if (pending_acks_info[i].ack_num < ack_session_info[pending_acks_info[i].session_index].bigger_ack_num) {
 270                         struct txq_entry_t *tqe;
 271
 272                         tqe = pending_acks_info[i].txqe;
 273                         if (tqe) {
 274                                 wilc_wlan_txq_remove(wilc, tqe);
 275                                 tqe->status = 1;
 276                                 if (tqe->tx_complete_func)
 277                                         tqe->tx_complete_func(tqe->priv,
 278                                                               tqe->status);
 279                                 kfree(tqe);
 280                                 dropped++;
 281                         }
 282                 }
 283         }
 284         pending_acks = 0;
 285         tcp_session = 0;
 286
 287         if (pending_base == 0)
 288                 pending_base = MAX_TCP_SESSION;
 289         else
 290                 pending_base = 0;
 291
 292         spin_unlock_irqrestore(&wilc->txq_spinlock, wilc->txq_spinlock_flags);
 293
 294         while (dropped > 0) {
 295                 wilc_lock_timeout(wilc, &wilc->txq_event, 1);
 296                 dropped--;
 297         }
 298
 299         return 1;
 300 }
 301
 302 static bool enabled;
 303
 304 void wilc_enable_tcp_ack_filter(bool value)
 305 {
 306         enabled = value;
 307 }
 308
 309 static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer,
 310                                      u32 buffer_size)
 311 {
 312         struct txq_entry_t *tqe;
 313         struct wilc *wilc = vif->wilc;
 314
 315         netdev_dbg(vif->ndev, "Adding config packet ...\n");
 316         if (wilc->quit) {
 317                 netdev_dbg(vif->ndev, "Return due to clear function\n");
 318                 up(&wilc->cfg_event);
 319                 return 0;
 320         }
 321
 322         tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
 323         if (!tqe)
 324                 return 0;
 325
 326         tqe->type = WILC_CFG_PKT;
 327         tqe->buffer = buffer;
 328         tqe->buffer_size = buffer_size;
 329         tqe->tx_complete_func = NULL;
 330         tqe->priv = NULL;
 331         tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
 332
 333         if (wilc_wlan_txq_add_to_head(vif, tqe))
 334                 return 0;
 335         return 1;
 336 }
 337
 338 int wilc_wlan_txq_add_net_pkt(struct net_device *dev, void *priv, u8 *buffer,
 339                               u32 buffer_size, wilc_tx_complete_func_t func)
 340 {
 341         struct txq_entry_t *tqe;
 342         struct wilc_vif *vif = netdev_priv(dev);
 343         struct wilc *wilc;
 344
 345         wilc = vif->wilc;
 346
 347         if (wilc->quit)
 348                 return 0;
 349
 350         tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
 351
 352         if (!tqe)
 353                 return 0;
 354         tqe->type = WILC_NET_PKT;
 355         tqe->buffer = buffer;
 356         tqe->buffer_size = buffer_size;
 357         tqe->tx_complete_func = func;
 358         tqe->priv = priv;
 359
 360         tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
 361         if (enabled)
 362                 tcp_process(dev, tqe);
 363         wilc_wlan_txq_add_to_tail(dev, tqe);
 364         return wilc->txq_entries;
 365 }
 366
 367 int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
 368                                u32 buffer_size, wilc_tx_complete_func_t func)
 369 {
 370         struct txq_entry_t *tqe;
 371         struct wilc_vif *vif = netdev_priv(dev);
 372         struct wilc *wilc;
 373
 374         wilc = vif->wilc;
 375
 376         if (wilc->quit)
 377                 return 0;
 378
 379         tqe = kmalloc(sizeof(*tqe), GFP_KERNEL);
 380
 381         if (!tqe)
 382                 return 0;
 383         tqe->type = WILC_MGMT_PKT;
 384         tqe->buffer = buffer;
 385         tqe->buffer_size = buffer_size;
 386         tqe->tx_complete_func = func;
 387         tqe->priv = priv;
 388         tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
 389         wilc_wlan_txq_add_to_tail(dev, tqe);
 390         return 1;
 391 }
 392
 393 static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc)
 394 {
 395         struct txq_entry_t *tqe;
 396         unsigned long flags;
 397
 398         spin_lock_irqsave(&wilc->txq_spinlock, flags);
 399
 400         tqe = wilc->txq_head;
 401
 402         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 403
 404         return tqe;
 405 }
 406
 407 static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
 408                                                   struct txq_entry_t *tqe)
 409 {
 410         unsigned long flags;
 411
 412         spin_lock_irqsave(&wilc->txq_spinlock, flags);
 413
 414         tqe = tqe->next;
 415         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 416
 417         return tqe;
 418 }
 419
 420 static int wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
 421 {
 422         if (wilc->quit)
 423                 return 0;
 424
 425         mutex_lock(&wilc->rxq_cs);
 426         if (!wilc->rxq_head) {
 427                 rqe->next = NULL;
 428                 wilc->rxq_head = rqe;
 429                 wilc->rxq_tail = rqe;
 430         } else {
 431                 wilc->rxq_tail->next = rqe;
 432                 rqe->next = NULL;
 433                 wilc->rxq_tail = rqe;
 434         }
 435         wilc->rxq_entries += 1;
 436         mutex_unlock(&wilc->rxq_cs);
 437         return wilc->rxq_entries;
 438 }
 439
 440 static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
 441 {
 442         if (wilc->rxq_head) {
 443                 struct rxq_entry_t *rqe;
 444
 445                 mutex_lock(&wilc->rxq_cs);
 446                 rqe = wilc->rxq_head;
 447                 wilc->rxq_head = wilc->rxq_head->next;
 448                 wilc->rxq_entries -= 1;
 449                 mutex_unlock(&wilc->rxq_cs);
 450                 return rqe;
 451         }
 452         return NULL;
 453 }
 454
 455 void chip_allow_sleep(struct wilc *wilc)
 456 {
 457         u32 reg = 0;
 458
 459         wilc->hif_func->hif_read_reg(wilc, 0xf0, &reg);
 460
 461         wilc->hif_func->hif_write_reg(wilc, 0xf0, reg & ~BIT(0));
 462         wilc->hif_func->hif_write_reg(wilc, 0xfa, 0);
 463 }
 464 EXPORT_SYMBOL_GPL(chip_allow_sleep);
 465
 466 void chip_wakeup(struct wilc *wilc)
 467 {
 468         u32 reg, clk_status_reg;
 469
 470         if ((wilc->io_type & 0x1) == HIF_SPI) {
 471                 do {
 472                         wilc->hif_func->hif_read_reg(wilc, 1, &reg);
 473                         wilc->hif_func->hif_write_reg(wilc, 1, reg | BIT(1));
 474                         wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1));
 475
 476                         do {
 477                                 usleep_range(2 * 1000, 2 * 1000);
 478                                 wilc_get_chipid(wilc, true);
 479                         } while (wilc_get_chipid(wilc, true) == 0);
 480                 } while (wilc_get_chipid(wilc, true) == 0);
 481         } else if ((wilc->io_type & 0x1) == HIF_SDIO)    {
 482                 wilc->hif_func->hif_write_reg(wilc, 0xfa, 1);
 483                 udelay(200);
 484                 wilc->hif_func->hif_read_reg(wilc, 0xf0, &reg);
 485                 do {
 486                         wilc->hif_func->hif_write_reg(wilc, 0xf0,
 487                                                       reg | BIT(0));
 488                         wilc->hif_func->hif_read_reg(wilc, 0xf1,
 489                                                      &clk_status_reg);
 490
 491                         while ((clk_status_reg & 0x1) == 0) {
 492                                 usleep_range(2 * 1000, 2 * 1000);
 493
 494                                 wilc->hif_func->hif_read_reg(wilc, 0xf1,
 495                                                              &clk_status_reg);
 496                         }
 497                         if ((clk_status_reg & 0x1) == 0) {
 498                                 wilc->hif_func->hif_write_reg(wilc, 0xf0,
 499                                                               reg & (~BIT(0)));
 500                         }
 501                 } while ((clk_status_reg & 0x1) == 0);
 502         }
 503
 504         if (chip_ps_state == CHIP_SLEEPING_MANUAL) {
 505                 if (wilc_get_chipid(wilc, false) < 0x1002b0) {
 506                         u32 val32;
 507
 508                         wilc->hif_func->hif_read_reg(wilc, 0x1e1c, &val32);
 509                         val32 |= BIT(6);
 510                         wilc->hif_func->hif_write_reg(wilc, 0x1e1c, val32);
 511
 512                         wilc->hif_func->hif_read_reg(wilc, 0x1e9c, &val32);
 513                         val32 |= BIT(6);
 514                         wilc->hif_func->hif_write_reg(wilc, 0x1e9c, val32);
 515                 }
 516         }
 517         chip_ps_state = CHIP_WAKEDUP;
 518 }
 519 EXPORT_SYMBOL_GPL(chip_wakeup);
 520
 521 void wilc_chip_sleep_manually(struct wilc *wilc)
 522 {
 523         if (chip_ps_state != CHIP_WAKEDUP)
 524                 return;
 525         acquire_bus(wilc, ACQUIRE_ONLY);
 526
 527         chip_allow_sleep(wilc);
 528         wilc->hif_func->hif_write_reg(wilc, 0x10a8, 1);
 529
 530         chip_ps_state = CHIP_SLEEPING_MANUAL;
 531         release_bus(wilc, RELEASE_ONLY);
 532 }
 533 EXPORT_SYMBOL_GPL(wilc_chip_sleep_manually);
 534
 535 void host_wakeup_notify(struct wilc *wilc)
 536 {
 537         acquire_bus(wilc, ACQUIRE_ONLY);
 538         wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
 539         release_bus(wilc, RELEASE_ONLY);
 540 }
 541 EXPORT_SYMBOL_GPL(host_wakeup_notify);
 542
 543 void host_sleep_notify(struct wilc *wilc)
 544 {
 545         acquire_bus(wilc, ACQUIRE_ONLY);
 546         wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
 547         release_bus(wilc, RELEASE_ONLY);
 548 }
 549 EXPORT_SYMBOL_GPL(host_sleep_notify);
 550
 551 int wilc_wlan_handle_txq(struct net_device *dev, u32 *txq_count)
 552 {
 553         int i, entries = 0;
 554         u32 sum;
 555         u32 reg;
 556         u8 *txb;
 557         u32 offset = 0;
 558         int vmm_sz = 0;
 559         struct txq_entry_t *tqe;
 560         int ret = 0;
 561         int counter;
 562         int timeout;
 563         u32 vmm_table[WILC_VMM_TBL_SIZE];
 564         struct wilc_vif *vif;
 565         struct wilc *wilc;
 566
 567         vif = netdev_priv(dev);
 568         wilc = vif->wilc;
 569
 570         txb = wilc->tx_buffer;
 571         wilc->txq_exit = 0;
 572         do {
 573                 if (wilc->quit)
 574                         break;
 575
 576                 wilc_lock_timeout(wilc, &wilc->txq_add_to_head_cs,
 577                                         CFG_PKTS_TIMEOUT);
 578                 wilc_wlan_txq_filter_dup_tcp_ack(dev);
 579                 tqe = wilc_wlan_txq_get_first(wilc);
 580                 i = 0;
 581                 sum = 0;
 582                 do {
 583                         if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
 584                                 if (tqe->type == WILC_CFG_PKT)
 585                                         vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
 586
 587                                 else if (tqe->type == WILC_NET_PKT)
 588                                         vmm_sz = ETH_ETHERNET_HDR_OFFSET;
 589
 590                                 else
 591                                         vmm_sz = HOST_HDR_OFFSET;
 592
 593                                 vmm_sz += tqe->buffer_size;
 594
 595                                 if (vmm_sz & 0x3)
 596                                         vmm_sz = (vmm_sz + 4) & ~0x3;
 597
 598                                 if ((sum + vmm_sz) > LINUX_TX_SIZE)
 599                                         break;
 600
 601                                 vmm_table[i] = vmm_sz / 4;
 602                                 if (tqe->type == WILC_CFG_PKT)
 603                                         vmm_table[i] |= BIT(10);
 604                                 vmm_table[i] = cpu_to_le32(vmm_table[i]);
 605
 606                                 i++;
 607                                 sum += vmm_sz;
 608                                 tqe = wilc_wlan_txq_get_next(wilc, tqe);
 609                         } else {
 610                                 break;
 611                         }
 612                 } while (1);
 613
 614                 if (i == 0)
 615                         break;
 616                 vmm_table[i] = 0x0;
 617
 618                 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
 619                 counter = 0;
 620                 do {
 621                         ret = wilc->hif_func->hif_read_reg(wilc,
 622                                                            WILC_HOST_TX_CTRL,
 623                                                            &reg);
 624                         if (!ret)
 625                                 break;
 626
 627                         if ((reg & 0x1) == 0) {
 628                                 break;
 629                         } else {
 630                                 counter++;
 631                                 if (counter > 200) {
 632                                         counter = 0;
 633                                         ret = wilc->hif_func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
 634                                         break;
 635                                 }
 636                         }
 637                 } while (!wilc->quit);
 638
 639                 if (!ret)
 640                         goto _end_;
 641
 642                 timeout = 200;
 643                 do {
 644                         ret = wilc->hif_func->hif_block_tx(wilc, WILC_VMM_TBL_RX_SHADOW_BASE, (u8 *)vmm_table, ((i + 1) * 4));
 645                         if (!ret)
 646                                 break;
 647
 648                         ret = wilc->hif_func->hif_write_reg(wilc,
 649                                                             WILC_HOST_VMM_CTL,
 650                                                             0x2);
 651                         if (!ret)
 652                                 break;
 653
 654                         do {
 655                                 ret = wilc->hif_func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, &reg);
 656                                 if (!ret)
 657                                         break;
 658                                 if ((reg >> 2) & 0x1) {
 659                                         entries = ((reg >> 3) & 0x3f);
 660                                         break;
 661                                 } else {
 662                                         release_bus(wilc, RELEASE_ALLOW_SLEEP);
 663                                 }
 664                         } while (--timeout);
 665                         if (timeout <= 0) {
 666                                 ret = wilc->hif_func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
 667                                 break;
 668                         }
 669
 670                         if (!ret)
 671                                 break;
 672
 673                         if (entries == 0) {
 674                                 ret = wilc->hif_func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, &reg);
 675                                 if (!ret)
 676                                         break;
 677                                 reg &= ~BIT(0);
 678                                 ret = wilc->hif_func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
 679                                 if (!ret)
 680                                         break;
 681                                 break;
 682                         } else {
 683                                 break;
 684                         }
 685                 } while (1);
 686
 687                 if (!ret)
 688                         goto _end_;
 689
 690                 if (entries == 0) {
 691                         ret = WILC_TX_ERR_NO_BUF;
 692                         goto _end_;
 693                 }
 694
 695                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
 696
 697                 offset = 0;
 698                 i = 0;
 699                 do {
 700                         tqe = wilc_wlan_txq_remove_from_head(dev);
 701                         if (tqe && (vmm_table[i] != 0)) {
 702                                 u32 header, buffer_offset;
 703
 704                                 vmm_table[i] = cpu_to_le32(vmm_table[i]);
 705                                 vmm_sz = (vmm_table[i] & 0x3ff);
 706                                 vmm_sz *= 4;
 707                                 header = (tqe->type << 31) |
 708                                          (tqe->buffer_size << 15) |
 709                                          vmm_sz;
 710                                 if (tqe->type == WILC_MGMT_PKT)
 711                                         header |= BIT(30);
 712                                 else
 713                                         header &= ~BIT(30);
 714
 715                                 header = cpu_to_le32(header);
 716                                 memcpy(&txb[offset], &header, 4);
 717                                 if (tqe->type == WILC_CFG_PKT) {
 718                                         buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
 719                                 } else if (tqe->type == WILC_NET_PKT) {
 720                                         char *bssid = ((struct tx_complete_data *)(tqe->priv))->bssid;
 721
 722                                         buffer_offset = ETH_ETHERNET_HDR_OFFSET;
 723                                         memcpy(&txb[offset + 4], bssid, 6);
 724                                 } else {
 725                                         buffer_offset = HOST_HDR_OFFSET;
 726                                 }
 727
 728                                 memcpy(&txb[offset + buffer_offset],
 729                                        tqe->buffer, tqe->buffer_size);
 730                                 offset += vmm_sz;
 731                                 i++;
 732                                 tqe->status = 1;
 733                                 if (tqe->tx_complete_func)
 734                                         tqe->tx_complete_func(tqe->priv,
 735                                                               tqe->status);
 736                                 if (tqe->tcp_pending_ack_idx != NOT_TCP_ACK &&
 737                                     tqe->tcp_pending_ack_idx < MAX_PENDING_ACKS)
 738                                         pending_acks_info[tqe->tcp_pending_ack_idx].txqe = NULL;
 739                                 kfree(tqe);
 740                         } else {
 741                                 break;
 742                         }
 743                 } while (--entries);
 744
 745                 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
 746
 747                 ret = wilc->hif_func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
 748                 if (!ret)
 749                         goto _end_;
 750
 751                 ret = wilc->hif_func->hif_block_tx_ext(wilc, 0, txb, offset);
 752                 if (!ret)
 753                         goto _end_;
 754
 755 _end_:
 756
 757                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
 758                 if (ret != 1)
 759                         break;
 760         } while (0);
 761         up(&wilc->txq_add_to_head_cs);
 762
 763         wilc->txq_exit = 1;
 764         *txq_count = wilc->txq_entries;
 765         return ret;
 766 }
 767
 768 static void wilc_wlan_handle_rxq(struct wilc *wilc)
 769 {
 770         int offset = 0, size;
 771         u8 *buffer;
 772         struct rxq_entry_t *rqe;
 773
 774         wilc->rxq_exit = 0;
 775
 776         do {
 777                 if (wilc->quit) {
 778                         up(&wilc->cfg_event);
 779                         break;
 780                 }
 781                 rqe = wilc_wlan_rxq_remove(wilc);
 782                 if (!rqe)
 783                         break;
 784
 785                 buffer = rqe->buffer;
 786                 size = rqe->buffer_size;
 787                 offset = 0;
 788
 789                 do {
 790                         u32 header;
 791                         u32 pkt_len, pkt_offset, tp_len;
 792                         int is_cfg_packet;
 793
 794                         memcpy(&header, &buffer[offset], 4);
 795                         header = cpu_to_le32(header);
 796
 797                         is_cfg_packet = (header >> 31) & 0x1;
 798                         pkt_offset = (header >> 22) & 0x1ff;
 799                         tp_len = (header >> 11) & 0x7ff;
 800                         pkt_len = header & 0x7ff;
 801
 802                         if (pkt_len == 0 || tp_len == 0)
 803                                 break;
 804
 805                         #define IS_MANAGMEMENT                          0x100
 806                         #define IS_MANAGMEMENT_CALLBACK                 0x080
 807                         #define IS_MGMT_STATUS_SUCCES                   0x040
 808
 809                         if (pkt_offset & IS_MANAGMEMENT) {
 810                                 pkt_offset &= ~(IS_MANAGMEMENT |
 811                                                 IS_MANAGMEMENT_CALLBACK |
 812                                                 IS_MGMT_STATUS_SUCCES);
 813
 814                                 WILC_WFI_mgmt_rx(wilc, &buffer[offset + HOST_HDR_OFFSET], pkt_len);
 815                         } else {
 816                                 if (!is_cfg_packet) {
 817                                         if (pkt_len > 0) {
 818                                                 wilc_frmw_to_linux(wilc,
 819                                                               &buffer[offset],
 820                                                               pkt_len,
 821                                                               pkt_offset);
 822                                         }
 823                                 } else {
 824                                         struct wilc_cfg_rsp rsp;
 825
 826                                         wilc_wlan_cfg_indicate_rx(wilc, &buffer[pkt_offset + offset], pkt_len, &rsp);
 827                                         if (rsp.type == WILC_CFG_RSP) {
 828                                                 if (wilc->cfg_seq_no == rsp.seq_no)
 829                                                         up(&wilc->cfg_event);
 830                                         } else if (rsp.type == WILC_CFG_RSP_STATUS) {
 831                                                 wilc_mac_indicate(wilc, WILC_MAC_INDICATE_STATUS);
 832
 833                                         } else if (rsp.type == WILC_CFG_RSP_SCAN) {
 834                                                 wilc_mac_indicate(wilc, WILC_MAC_INDICATE_SCAN);
 835                                         }
 836                                 }
 837                         }
 838                         offset += tp_len;
 839                         if (offset >= size)
 840                                 break;
 841                 } while (1);
 842                 kfree(rqe);
 843         } while (1);
 844
 845         wilc->rxq_exit = 1;
 846 }
 847
 848 static void wilc_unknown_isr_ext(struct wilc *wilc)
 849 {
 850         wilc->hif_func->hif_clear_int_ext(wilc, 0);
 851 }
 852
 853 static void wilc_pllupdate_isr_ext(struct wilc *wilc, u32 int_stats)
 854 {
 855         int trials = 10;
 856
 857         wilc->hif_func->hif_clear_int_ext(wilc, PLL_INT_CLR);
 858
 859         if (wilc->io_type == HIF_SDIO)
 860                 mdelay(WILC_PLL_TO_SDIO);
 861         else
 862                 mdelay(WILC_PLL_TO_SPI);
 863
 864         while (!(ISWILC1000(wilc_get_chipid(wilc, true)) && --trials))
 865                 mdelay(1);
 866 }
 867
 868 static void wilc_sleeptimer_isr_ext(struct wilc *wilc, u32 int_stats1)
 869 {
 870         wilc->hif_func->hif_clear_int_ext(wilc, SLEEP_INT_CLR);
 871 }
 872
 873 static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
 874 {
 875         u32 offset = wilc->rx_buffer_offset;
 876         u8 *buffer = NULL;
 877         u32 size;
 878         u32 retries = 0;
 879         int ret = 0;
 880         struct rxq_entry_t *rqe;
 881
 882         size = (int_status & 0x7fff) << 2;
 883
 884         while (!size && retries < 10) {
 885                 wilc->hif_func->hif_read_size(wilc, &size);
 886                 size = (size & 0x7fff) << 2;
 887                 retries++;
 888         }
 889
 890         if (size > 0) {
 891                 if (LINUX_RX_SIZE - offset < size)
 892                         offset = 0;
 893
 894                 if (wilc->rx_buffer)
 895                         buffer = &wilc->rx_buffer[offset];
 896                 else
 897                         goto _end_;
 898
 899                 wilc->hif_func->hif_clear_int_ext(wilc,
 900                                               DATA_INT_CLR | ENABLE_RX_VMM);
 901                 ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
 902
 903                 if (!ret)
 904                         goto _end_;
 905 _end_:
 906                 if (ret) {
 907                         offset += size;
 908                         wilc->rx_buffer_offset = offset;
 909                         rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
 910                         if (rqe) {
 911                                 rqe->buffer = buffer;
 912                                 rqe->buffer_size = size;
 913                                 wilc_wlan_rxq_add(wilc, rqe);
 914                         }
 915                 }
 916         }
 917         wilc_wlan_handle_rxq(wilc);
 918 }
 919
 920 void wilc_handle_isr(struct wilc *wilc)
 921 {
 922         u32 int_status;
 923
 924         acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
 925         wilc->hif_func->hif_read_int(wilc, &int_status);
 926
 927         if (int_status & PLL_INT_EXT)
 928                 wilc_pllupdate_isr_ext(wilc, int_status);
 929
 930         if (int_status & DATA_INT_EXT)
 931                 wilc_wlan_handle_isr_ext(wilc, int_status);
 932
 933         if (int_status & SLEEP_INT_EXT)
 934                 wilc_sleeptimer_isr_ext(wilc, int_status);
 935
 936         if (!(int_status & (ALL_INT_EXT)))
 937                 wilc_unknown_isr_ext(wilc);
 938
 939         release_bus(wilc, RELEASE_ALLOW_SLEEP);
 940 }
 941 EXPORT_SYMBOL_GPL(wilc_handle_isr);
 942
 943 int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
 944                                 u32 buffer_size)
 945 {
 946         u32 offset;
 947         u32 addr, size, size2, blksz;
 948         u8 *dma_buffer;
 949         int ret = 0;
 950
 951         blksz = BIT(12);
 952
 953         dma_buffer = kmalloc(blksz, GFP_KERNEL);
 954         if (!dma_buffer) {
 955                 ret = -EIO;
 956                 goto _fail_1;
 957         }
 958
 959         offset = 0;
 960         do {
 961                 memcpy(&addr, &buffer[offset], 4);
 962                 memcpy(&size, &buffer[offset + 4], 4);
 963                 addr = cpu_to_le32(addr);
 964                 size = cpu_to_le32(size);
 965                 acquire_bus(wilc, ACQUIRE_ONLY);
 966                 offset += 8;
 967                 while (((int)size) && (offset < buffer_size)) {
 968                         if (size <= blksz)
 969                                 size2 = size;
 970                         else
 971                                 size2 = blksz;
 972
 973                         memcpy(dma_buffer, &buffer[offset], size2);
 974                         ret = wilc->hif_func->hif_block_tx(wilc, addr,
 975                                                            dma_buffer, size2);
 976                         if (!ret)
 977                                 break;
 978
 979                         addr += size2;
 980                         offset += size2;
 981                         size -= size2;
 982                 }
 983                 release_bus(wilc, RELEASE_ONLY);
 984
 985                 if (!ret) {
 986                         ret = -EIO;
 987                         goto _fail_;
 988                 }
 989         } while (offset < buffer_size);
 990
 991 _fail_:
 992
 993         kfree(dma_buffer);
 994
 995 _fail_1:
 996
 997         return (ret < 0) ? ret : 0;
 998 }
 999
1000 int wilc_wlan_start(struct wilc *wilc)
1001 {
1002         u32 reg = 0;
1003         int ret;
1004         u32 chipid;
1005
1006         if (wilc->io_type == HIF_SDIO) {
1007                 reg = 0;
1008                 reg |= BIT(3);
1009         } else if (wilc->io_type == HIF_SPI) {
1010                 reg = 1;
1011         }
1012         acquire_bus(wilc, ACQUIRE_ONLY);
1013         ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
1014         if (!ret) {
1015                 release_bus(wilc, RELEASE_ONLY);
1016                 ret = -EIO;
1017                 return ret;
1018         }
1019         reg = 0;
1020         if (wilc->io_type == HIF_SDIO && wilc->dev_irq_num)
1021                 reg |= WILC_HAVE_SDIO_IRQ_GPIO;
1022
1023 #ifdef WILC_DISABLE_PMU
1024 #else
1025         reg |= WILC_HAVE_USE_PMU;
1026 #endif
1027
1028 #ifdef WILC_SLEEP_CLK_SRC_XO
1029         reg |= WILC_HAVE_SLEEP_CLK_SRC_XO;
1030 #elif defined WILC_SLEEP_CLK_SRC_RTC
1031         reg |= WILC_HAVE_SLEEP_CLK_SRC_RTC;
1032 #endif
1033
1034 #ifdef WILC_EXT_PA_INV_TX_RX
1035         reg |= WILC_HAVE_EXT_PA_INV_TX_RX;
1036 #endif
1037         reg |= WILC_HAVE_USE_IRQ_AS_HOST_WAKE;
1038         reg |= WILC_HAVE_LEGACY_RF_SETTINGS;
1039 #ifdef XTAL_24
1040         reg |= WILC_HAVE_XTAL_24;
1041 #endif
1042 #ifdef DISABLE_WILC_UART
1043         reg |= WILC_HAVE_DISABLE_WILC_UART;
1044 #endif
1045
1046         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
1047         if (!ret) {
1048                 release_bus(wilc, RELEASE_ONLY);
1049                 ret = -EIO;
1050                 return ret;
1051         }
1052
1053         wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
1054
1055         ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
1056         if (!ret) {
1057                 release_bus(wilc, RELEASE_ONLY);
1058                 ret = -EIO;
1059                 return ret;
1060         }
1061
1062         wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1063         if ((reg & BIT(10)) == BIT(10)) {
1064                 reg &= ~BIT(10);
1065                 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1066                 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1067         }
1068
1069         reg |= BIT(10);
1070         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1071         wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1072         release_bus(wilc, RELEASE_ONLY);
1073
1074         return (ret < 0) ? ret : 0;
1075 }
1076
1077 int wilc_wlan_stop(struct wilc *wilc)
1078 {
1079         u32 reg = 0;
1080         int ret;
1081         u8 timeout = 10;
1082
1083         acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
1084
1085         ret = wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1086         if (!ret) {
1087                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1088                 return ret;
1089         }
1090
1091         reg &= ~BIT(10);
1092         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1093         if (!ret) {
1094                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1095                 return ret;
1096         }
1097
1098         do {
1099                 ret = wilc->hif_func->hif_read_reg(wilc,
1100                                                    WILC_GLB_RESET_0, &reg);
1101                 if (!ret) {
1102                         release_bus(wilc, RELEASE_ALLOW_SLEEP);
1103                         return ret;
1104                 }
1105
1106                 if ((reg & BIT(10))) {
1107                         reg &= ~BIT(10);
1108                         ret = wilc->hif_func->hif_write_reg(wilc,
1109                                                             WILC_GLB_RESET_0,
1110                                                             reg);
1111                         timeout--;
1112                 } else {
1113                         ret = wilc->hif_func->hif_read_reg(wilc,
1114                                                            WILC_GLB_RESET_0,
1115                                                            &reg);
1116                         if (!ret) {
1117                                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1118                                 return ret;
1119                         }
1120                         break;
1121                 }
1122
1123         } while (timeout);
1124         reg = (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(8) | BIT(9) | BIT(26) |
1125                BIT(29) | BIT(30) | BIT(31));
1126
1127         wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1128         reg = (u32)~BIT(10);
1129
1130         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1131
1132         release_bus(wilc, RELEASE_ALLOW_SLEEP);
1133
1134         return ret;
1135 }
1136
1137 void wilc_wlan_cleanup(struct net_device *dev)
1138 {
1139         struct txq_entry_t *tqe;
1140         struct rxq_entry_t *rqe;
1141         u32 reg = 0;
1142         int ret;
1143         struct wilc_vif *vif;
1144         struct wilc *wilc;
1145
1146         vif = netdev_priv(dev);
1147         wilc = vif->wilc;
1148
1149         wilc->quit = 1;
1150         do {
1151                 tqe = wilc_wlan_txq_remove_from_head(dev);
1152                 if (!tqe)
1153                         break;
1154                 if (tqe->tx_complete_func)
1155                         tqe->tx_complete_func(tqe->priv, 0);
1156                 kfree(tqe);
1157         } while (1);
1158
1159         do {
1160                 rqe = wilc_wlan_rxq_remove(wilc);
1161                 if (!rqe)
1162                         break;
1163                 kfree(rqe);
1164         } while (1);
1165
1166         kfree(wilc->rx_buffer);
1167         wilc->rx_buffer = NULL;
1168         kfree(wilc->tx_buffer);
1169         wilc->tx_buffer = NULL;
1170
1171         acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
1172
1173         ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, &reg);
1174         if (!ret)
1175                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1176
1177         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
1178                                         (reg | ABORT_INT));
1179         if (!ret)
1180                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1181
1182         release_bus(wilc, RELEASE_ALLOW_SLEEP);
1183         wilc->hif_func->hif_deinit(NULL);
1184 }
1185
1186 static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
1187                                 u32 drv_handler)
1188 {
1189         struct wilc *wilc = vif->wilc;
1190         struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
1191         int total_len = wilc->cfg_frame_offset + 4 + DRIVER_HANDLER_SIZE;
1192         int seq_no = wilc->cfg_seq_no % 256;
1193         int driver_handler = (u32)drv_handler;
1194
1195         if (type == WILC_CFG_SET)
1196                 cfg->wid_header[0] = 'W';
1197         else
1198                 cfg->wid_header[0] = 'Q';
1199         cfg->wid_header[1] = seq_no;
1200         cfg->wid_header[2] = (u8)total_len;
1201         cfg->wid_header[3] = (u8)(total_len >> 8);
1202         cfg->wid_header[4] = (u8)driver_handler;
1203         cfg->wid_header[5] = (u8)(driver_handler >> 8);
1204         cfg->wid_header[6] = (u8)(driver_handler >> 16);
1205         cfg->wid_header[7] = (u8)(driver_handler >> 24);
1206         wilc->cfg_seq_no = seq_no;
1207
1208         if (!wilc_wlan_txq_add_cfg_pkt(vif, &cfg->wid_header[0], total_len))
1209                 return -1;
1210
1211         return 0;
1212 }
1213
1214 int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u32 wid, u8 *buffer,
1215                       u32 buffer_size, int commit, u32 drv_handler)
1216 {
1217         u32 offset;
1218         int ret_size;
1219         struct wilc *wilc = vif->wilc;
1220
1221         if (wilc->cfg_frame_in_use)
1222                 return 0;
1223
1224         if (start)
1225                 wilc->cfg_frame_offset = 0;
1226
1227         offset = wilc->cfg_frame_offset;
1228         ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
1229                                          (u16)wid, buffer, buffer_size);
1230         offset += ret_size;
1231         wilc->cfg_frame_offset = offset;
1232
1233         if (commit) {
1234                 netdev_dbg(vif->ndev,
1235                            "[WILC]PACKET Commit with sequence number %d\n",
1236                            wilc->cfg_seq_no);
1237                 netdev_dbg(vif->ndev, "Processing cfg_set()\n");
1238                 wilc->cfg_frame_in_use = 1;
1239
1240                 if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
1241                         ret_size = 0;
1242
1243                 if (wilc_lock_timeout(wilc, &wilc->cfg_event,
1244                                             CFG_PKTS_TIMEOUT)) {
1245                         netdev_dbg(vif->ndev, "Set Timed Out\n");
1246                         ret_size = 0;
1247                 }
1248                 wilc->cfg_frame_in_use = 0;
1249                 wilc->cfg_frame_offset = 0;
1250                 wilc->cfg_seq_no += 1;
1251         }
1252
1253         return ret_size;
1254 }
1255
1256 int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u32 wid, int commit,
1257                       u32 drv_handler)
1258 {
1259         u32 offset;
1260         int ret_size;
1261         struct wilc *wilc = vif->wilc;
1262
1263         if (wilc->cfg_frame_in_use)
1264                 return 0;
1265
1266         if (start)
1267                 wilc->cfg_frame_offset = 0;
1268
1269         offset = wilc->cfg_frame_offset;
1270         ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset,
1271                                          (u16)wid);
1272         offset += ret_size;
1273         wilc->cfg_frame_offset = offset;
1274
1275         if (commit) {
1276                 wilc->cfg_frame_in_use = 1;
1277
1278                 if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
1279                         ret_size = 0;
1280
1281                 if (wilc_lock_timeout(wilc, &wilc->cfg_event,
1282                                             CFG_PKTS_TIMEOUT)) {
1283                         netdev_dbg(vif->ndev, "Get Timed Out\n");
1284                         ret_size = 0;
1285                 }
1286                 wilc->cfg_frame_in_use = 0;
1287                 wilc->cfg_frame_offset = 0;
1288                 wilc->cfg_seq_no += 1;
1289         }
1290
1291         return ret_size;
1292 }
1293
1294 int wilc_wlan_cfg_get_val(u32 wid, u8 *buffer, u32 buffer_size)
1295 {
1296         return wilc_wlan_cfg_get_wid_value((u16)wid, buffer, buffer_size);
1297 }
1298
1299 int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
1300                          u32 count, u32 drv)
1301 {
1302         int i;
1303         int ret = 0;
1304
1305         if (mode == GET_CFG) {
1306                 for (i = 0; i < count; i++) {
1307                         if (!wilc_wlan_cfg_get(vif, !i,
1308                                                wids[i].id,
1309                                                (i == count - 1),
1310                                                drv)) {
1311                                 ret = -ETIMEDOUT;
1312                                 break;
1313                         }
1314                 }
1315                 for (i = 0; i < count; i++) {
1316                         wids[i].size = wilc_wlan_cfg_get_val(wids[i].id,
1317                                                              wids[i].val,
1318                                                              wids[i].size);
1319                 }
1320         } else if (mode == SET_CFG) {
1321                 for (i = 0; i < count; i++) {
1322                         if (!wilc_wlan_cfg_set(vif, !i,
1323                                                wids[i].id,
1324                                                wids[i].val,
1325                                                wids[i].size,
1326                                                (i == count - 1),
1327                                                drv)) {
1328                                 ret = -ETIMEDOUT;
1329                                 break;
1330                         }
1331                 }
1332         }
1333
1334         return ret;
1335 }
1336
1337 static u32 init_chip(struct net_device *dev)
1338 {
1339         u32 chipid;
1340         u32 reg, ret = 0;
1341         struct wilc_vif *vif;
1342         struct wilc *wilc;
1343
1344         vif = netdev_priv(dev);
1345         wilc = vif->wilc;
1346
1347         acquire_bus(wilc, ACQUIRE_ONLY);
1348
1349         chipid = wilc_get_chipid(wilc, true);
1350
1351         if ((chipid & 0xfff) != 0xa0) {
1352                 ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, &reg);
1353                 if (!ret) {
1354                         netdev_err(dev, "fail read reg 0x1118\n");
1355                         return ret;
1356                 }
1357                 reg |= BIT(0);
1358                 ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
1359                 if (!ret) {
1360                         netdev_err(dev, "fail write reg 0x1118\n");
1361                         return ret;
1362                 }
1363                 ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
1364                 if (!ret) {
1365                         netdev_err(dev, "fail write reg 0xc0000\n");
1366                         return ret;
1367                 }
1368         }
1369
1370         release_bus(wilc, RELEASE_ONLY);
1371
1372         return ret;
1373 }
1374
1375 u32 wilc_get_chipid(struct wilc *wilc, bool update)
1376 {
1377         static u32 chipid;
1378         u32 tempchipid = 0;
1379         u32 rfrevid = 0;
1380
1381         if (chipid == 0 || update) {
1382                 wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
1383                 wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
1384                 if (!ISWILC1000(tempchipid)) {
1385                         chipid = 0;
1386                         return chipid;
1387                 }
1388                 if (tempchipid == 0x1002a0) {
1389                         if (rfrevid != 0x1)
1390                                 tempchipid = 0x1002a1;
1391                 } else if (tempchipid == 0x1002b0) {
1392                         if (rfrevid == 0x4)
1393                                 tempchipid = 0x1002b1;
1394                         else if (rfrevid != 0x3)
1395                                 tempchipid = 0x1002b2;
1396                 }
1397
1398                 chipid = tempchipid;
1399         }
1400         return chipid;
1401 }
1402
1403 int wilc_wlan_init(struct net_device *dev)
1404 {
1405         int ret = 0;
1406         struct wilc_vif *vif = netdev_priv(dev);
1407         struct wilc *wilc;
1408
1409         wilc = vif->wilc;
1410
1411         wilc->quit = 0;
1412
1413         if (!wilc->hif_func->hif_init(wilc, false)) {
1414                 ret = -EIO;
1415                 goto _fail_;
1416         }
1417
1418         if (!wilc_wlan_cfg_init()) {
1419                 ret = -ENOBUFS;
1420                 goto _fail_;
1421         }
1422
1423         if (!wilc->tx_buffer)
1424                 wilc->tx_buffer = kmalloc(LINUX_TX_SIZE, GFP_KERNEL);
1425
1426         if (!wilc->tx_buffer) {
1427                 ret = -ENOBUFS;
1428                 goto _fail_;
1429         }
1430
1431         if (!wilc->rx_buffer)
1432                 wilc->rx_buffer = kmalloc(LINUX_RX_SIZE, GFP_KERNEL);
1433
1434         if (!wilc->rx_buffer) {
1435                 ret = -ENOBUFS;
1436                 goto _fail_;
1437         }
1438
1439         if (!init_chip(dev)) {
1440                 ret = -EIO;
1441                 goto _fail_;
1442         }
1443         init_tcp_tracking();
1444
1445         return 1;
1446
1447 _fail_:
1448
1449         kfree(wilc->rx_buffer);
1450         wilc->rx_buffer = NULL;
1451         kfree(wilc->tx_buffer);
1452         wilc->tx_buffer = NULL;
1453
1454         return ret;
1455 }