drivers/staging/wilc1000/wilc_wlan.c

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