drivers/staging/wilc1000/wilc_wlan.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/completion.h>
   3 #include "wilc_wlan_if.h"
   4 #include "wilc_wlan.h"
   5 #include "wilc_wfi_netdevice.h"
   6 #include "wilc_wlan_cfg.h"
   7
   8 static enum chip_ps_states chip_ps_state = CHIP_WAKEDUP;
   9
  10 static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire)
  11 {
  12         mutex_lock(&wilc->hif_cs);
  13         if (acquire == ACQUIRE_AND_WAKEUP)
  14                 chip_wakeup(wilc);
  15 }
  16
  17 static inline void release_bus(struct wilc *wilc, enum bus_release release)
  18 {
  19         if (release == RELEASE_ALLOW_SLEEP)
  20                 chip_allow_sleep(wilc);
  21         mutex_unlock(&wilc->hif_cs);
  22 }
  23
  24 static void wilc_wlan_txq_remove(struct wilc *wilc, struct txq_entry_t *tqe)
  25 {
  26         if (tqe == wilc->txq_head) {
  27                 wilc->txq_head = tqe->next;
  28                 if (wilc->txq_head)
  29                         wilc->txq_head->prev = NULL;
  30         } else if (tqe == wilc->txq_tail) {
  31                 wilc->txq_tail = (tqe->prev);
  32                 if (wilc->txq_tail)
  33                         wilc->txq_tail->next = NULL;
  34         } else {
  35                 tqe->prev->next = tqe->next;
  36                 tqe->next->prev = tqe->prev;
  37         }
  38         wilc->txq_entries -= 1;
  39 }
  40
  41 static struct txq_entry_t *
  42 wilc_wlan_txq_remove_from_head(struct net_device *dev)
  43 {
  44         struct txq_entry_t *tqe;
  45         unsigned long flags;
  46         struct wilc_vif *vif;
  47         struct wilc *wilc;
  48
  49         vif = netdev_priv(dev);
  50         wilc = vif->wilc;
  51
  52         spin_lock_irqsave(&wilc->txq_spinlock, flags);
  53         if (wilc->txq_head) {
  54                 tqe = wilc->txq_head;
  55                 wilc->txq_head = tqe->next;
  56                 if (wilc->txq_head)
  57                         wilc->txq_head->prev = NULL;
  58
  59                 wilc->txq_entries -= 1;
  60         } else {
  61                 tqe = NULL;
  62         }
  63         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
  64         return tqe;
  65 }
  66
  67 static void wilc_wlan_txq_add_to_tail(struct net_device *dev,
  68                                       struct txq_entry_t *tqe)
  69 {
  70         unsigned long flags;
  71         struct wilc_vif *vif;
  72         struct wilc *wilc;
  73
  74         vif = netdev_priv(dev);
  75         wilc = vif->wilc;
  76
  77         spin_lock_irqsave(&wilc->txq_spinlock, flags);
  78
  79         if (!wilc->txq_head) {
  80                 tqe->next = NULL;
  81                 tqe->prev = NULL;
  82                 wilc->txq_head = tqe;
  83                 wilc->txq_tail = tqe;
  84         } else {
  85                 tqe->next = NULL;
  86                 tqe->prev = wilc->txq_tail;
  87                 wilc->txq_tail->next = tqe;
  88                 wilc->txq_tail = tqe;
  89         }
  90         wilc->txq_entries += 1;
  91
  92         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
  93
  94         complete(&wilc->txq_event);
  95 }
  96
  97 static int wilc_wlan_txq_add_to_head(struct wilc_vif *vif,
  98                                      struct txq_entry_t *tqe)
  99 {
 100         unsigned long flags;
 101         struct wilc *wilc = vif->wilc;
 102
 103         mutex_lock(&wilc->txq_add_to_head_cs);
 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         mutex_unlock(&wilc->txq_add_to_head_cs);
 122         complete(&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 add_tcp_session(u32 src_prt, u32 dst_prt, u32 seq)
 154 {
 155         if (tcp_session < 2 * MAX_TCP_SESSION) {
 156                 ack_session_info[tcp_session].seq_num = seq;
 157                 ack_session_info[tcp_session].bigger_ack_num = 0;
 158                 ack_session_info[tcp_session].src_port = src_prt;
 159                 ack_session_info[tcp_session].dst_port = dst_prt;
 160                 tcp_session++;
 161         }
 162         return 0;
 163 }
 164
 165 static inline int update_tcp_session(u32 index, u32 ack)
 166 {
 167         if (index < 2 * MAX_TCP_SESSION &&
 168             ack > ack_session_info[index].bigger_ack_num)
 169                 ack_session_info[index].bigger_ack_num = ack;
 170         return 0;
 171 }
 172
 173 static inline int add_tcp_pending_ack(u32 ack, u32 session_index,
 174                                       struct txq_entry_t *txqe)
 175 {
 176         if (pending_base + pending_acks < MAX_PENDING_ACKS) {
 177                 pending_acks_info[pending_base + pending_acks].ack_num = ack;
 178                 pending_acks_info[pending_base + pending_acks].txqe = txqe;
 179                 pending_acks_info[pending_base + pending_acks].session_index = session_index;
 180                 txqe->tcp_pending_ack_idx = pending_base + pending_acks;
 181                 pending_acks++;
 182         }
 183         return 0;
 184 }
 185
 186 static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
 187 {
 188         u8 *eth_hdr_ptr;
 189         u8 *buffer = tqe->buffer;
 190         unsigned short h_proto;
 191         int i;
 192         unsigned long flags;
 193         struct wilc_vif *vif;
 194         struct wilc *wilc;
 195
 196         vif = netdev_priv(dev);
 197         wilc = vif->wilc;
 198
 199         spin_lock_irqsave(&wilc->txq_spinlock, flags);
 200
 201         eth_hdr_ptr = &buffer[0];
 202         h_proto = ntohs(*((unsigned short *)&eth_hdr_ptr[12]));
 203         if (h_proto == ETH_P_IP) {
 204                 u8 *ip_hdr_ptr;
 205                 u8 protocol;
 206
 207                 ip_hdr_ptr = &buffer[ETHERNET_HDR_LEN];
 208                 protocol = ip_hdr_ptr[9];
 209
 210                 if (protocol == 0x06) {
 211                         u8 *tcp_hdr_ptr;
 212                         u32 IHL, total_length, data_offset;
 213
 214                         tcp_hdr_ptr = &ip_hdr_ptr[IP_HDR_LEN];
 215                         IHL = (ip_hdr_ptr[0] & 0xf) << 2;
 216                         total_length = ((u32)ip_hdr_ptr[2] << 8) +
 217                                         (u32)ip_hdr_ptr[3];
 218                         data_offset = ((u32)tcp_hdr_ptr[12] & 0xf0) >> 2;
 219                         if (total_length == (IHL + data_offset)) {
 220                                 u32 seq_no, ack_no;
 221
 222                                 seq_no = ((u32)tcp_hdr_ptr[4] << 24) +
 223                                          ((u32)tcp_hdr_ptr[5] << 16) +
 224                                          ((u32)tcp_hdr_ptr[6] << 8) +
 225                                          (u32)tcp_hdr_ptr[7];
 226
 227                                 ack_no = ((u32)tcp_hdr_ptr[8] << 24) +
 228                                          ((u32)tcp_hdr_ptr[9] << 16) +
 229                                          ((u32)tcp_hdr_ptr[10] << 8) +
 230                                          (u32)tcp_hdr_ptr[11];
 231
 232                                 for (i = 0; i < tcp_session; i++) {
 233                                         if (i < 2 * MAX_TCP_SESSION &&
 234                                             ack_session_info[i].seq_num == seq_no) {
 235                                                 update_tcp_session(i, ack_no);
 236                                                 break;
 237                                         }
 238                                 }
 239                                 if (i == tcp_session)
 240                                         add_tcp_session(0, 0, seq_no);
 241
 242                                 add_tcp_pending_ack(ack_no, i, tqe);
 243                         }
 244                 }
 245         }
 246         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 247 }
 248
 249 static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
 250 {
 251         struct wilc_vif *vif;
 252         struct wilc *wilc;
 253         u32 i = 0;
 254         u32 dropped = 0;
 255
 256         vif = netdev_priv(dev);
 257         wilc = vif->wilc;
 258
 259         spin_lock_irqsave(&wilc->txq_spinlock, wilc->txq_spinlock_flags);
 260         for (i = pending_base; i < (pending_base + pending_acks); i++) {
 261                 if (i >= MAX_PENDING_ACKS ||
 262                     pending_acks_info[i].session_index >= 2 * MAX_TCP_SESSION)
 263                         break;
 264                 if (pending_acks_info[i].ack_num < ack_session_info[pending_acks_info[i].session_index].bigger_ack_num) {
 265                         struct txq_entry_t *tqe;
 266
 267                         tqe = pending_acks_info[i].txqe;
 268                         if (tqe) {
 269                                 wilc_wlan_txq_remove(wilc, tqe);
 270                                 tqe->status = 1;
 271                                 if (tqe->tx_complete_func)
 272                                         tqe->tx_complete_func(tqe->priv,
 273                                                               tqe->status);
 274                                 kfree(tqe);
 275                                 dropped++;
 276                         }
 277                 }
 278         }
 279         pending_acks = 0;
 280         tcp_session = 0;
 281
 282         if (pending_base == 0)
 283                 pending_base = MAX_TCP_SESSION;
 284         else
 285                 pending_base = 0;
 286
 287         spin_unlock_irqrestore(&wilc->txq_spinlock, wilc->txq_spinlock_flags);
 288
 289         while (dropped > 0) {
 290                 wait_for_completion_timeout(&wilc->txq_event,
 291                                             msecs_to_jiffies(1));
 292                 dropped--;
 293         }
 294
 295         return 1;
 296 }
 297
 298 static bool enabled;
 299
 300 void wilc_enable_tcp_ack_filter(bool value)
 301 {
 302         enabled = value;
 303 }
 304
 305 static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer,
 306                                      u32 buffer_size)
 307 {
 308         struct txq_entry_t *tqe;
 309         struct wilc *wilc = vif->wilc;
 310
 311         netdev_dbg(vif->ndev, "Adding config packet ...\n");
 312         if (wilc->quit) {
 313                 netdev_dbg(vif->ndev, "Return due to clear function\n");
 314                 complete(&wilc->cfg_event);
 315                 return 0;
 316         }
 317
 318         tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
 319         if (!tqe)
 320                 return 0;
 321
 322         tqe->type = WILC_CFG_PKT;
 323         tqe->buffer = buffer;
 324         tqe->buffer_size = buffer_size;
 325         tqe->tx_complete_func = NULL;
 326         tqe->priv = NULL;
 327         tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
 328
 329         if (wilc_wlan_txq_add_to_head(vif, tqe)) {
 330                 kfree(tqe);
 331                 return 0;
 332         }
 333
 334         return 1;
 335 }
 336
 337 int wilc_wlan_txq_add_net_pkt(struct net_device *dev, void *priv, u8 *buffer,
 338                               u32 buffer_size, wilc_tx_complete_func_t func)
 339 {
 340         struct txq_entry_t *tqe;
 341         struct wilc_vif *vif = netdev_priv(dev);
 342         struct wilc *wilc;
 343
 344         wilc = vif->wilc;
 345
 346         if (wilc->quit)
 347                 return 0;
 348
 349         tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
 350
 351         if (!tqe)
 352                 return 0;
 353         tqe->type = WILC_NET_PKT;
 354         tqe->buffer = buffer;
 355         tqe->buffer_size = buffer_size;
 356         tqe->tx_complete_func = func;
 357         tqe->priv = priv;
 358
 359         tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
 360         if (enabled)
 361                 tcp_process(dev, tqe);
 362         wilc_wlan_txq_add_to_tail(dev, tqe);
 363         return wilc->txq_entries;
 364 }
 365
 366 int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
 367                                u32 buffer_size, wilc_tx_complete_func_t func)
 368 {
 369         struct txq_entry_t *tqe;
 370         struct wilc_vif *vif = netdev_priv(dev);
 371         struct wilc *wilc;
 372
 373         wilc = vif->wilc;
 374
 375         if (wilc->quit)
 376                 return 0;
 377
 378         tqe = kmalloc(sizeof(*tqe), GFP_KERNEL);
 379
 380         if (!tqe)
 381                 return 0;
 382         tqe->type = WILC_MGMT_PKT;
 383         tqe->buffer = buffer;
 384         tqe->buffer_size = buffer_size;
 385         tqe->tx_complete_func = func;
 386         tqe->priv = priv;
 387         tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
 388         wilc_wlan_txq_add_to_tail(dev, tqe);
 389         return 1;
 390 }
 391
 392 static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc)
 393 {
 394         struct txq_entry_t *tqe;
 395         unsigned long flags;
 396
 397         spin_lock_irqsave(&wilc->txq_spinlock, flags);
 398
 399         tqe = wilc->txq_head;
 400
 401         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 402
 403         return tqe;
 404 }
 405
 406 static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
 407                                                   struct txq_entry_t *tqe)
 408 {
 409         unsigned long flags;
 410
 411         spin_lock_irqsave(&wilc->txq_spinlock, flags);
 412
 413         tqe = tqe->next;
 414         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 415
 416         return tqe;
 417 }
 418
 419 static int wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
 420 {
 421         if (wilc->quit)
 422                 return 0;
 423
 424         mutex_lock(&wilc->rxq_cs);
 425         if (!wilc->rxq_head) {
 426                 rqe->next = NULL;
 427                 wilc->rxq_head = rqe;
 428                 wilc->rxq_tail = rqe;
 429         } else {
 430                 wilc->rxq_tail->next = rqe;
 431                 rqe->next = NULL;
 432                 wilc->rxq_tail = rqe;
 433         }
 434         wilc->rxq_entries += 1;
 435         mutex_unlock(&wilc->rxq_cs);
 436         return wilc->rxq_entries;
 437 }
 438
 439 static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
 440 {
 441         if (wilc->rxq_head) {
 442                 struct rxq_entry_t *rqe;
 443
 444                 mutex_lock(&wilc->rxq_cs);
 445                 rqe = wilc->rxq_head;
 446                 wilc->rxq_head = wilc->rxq_head->next;
 447                 wilc->rxq_entries -= 1;
 448                 mutex_unlock(&wilc->rxq_cs);
 449                 return rqe;
 450         }
 451         return NULL;
 452 }
 453
 454 void chip_allow_sleep(struct wilc *wilc)
 455 {
 456         u32 reg = 0;
 457
 458         wilc->hif_func->hif_read_reg(wilc, 0xf0, &reg);
 459
 460         wilc->hif_func->hif_write_reg(wilc, 0xf0, reg & ~BIT(0));
 461         wilc->hif_func->hif_write_reg(wilc, 0xfa, 0);
 462 }
 463 EXPORT_SYMBOL_GPL(chip_allow_sleep);
 464
 465 void chip_wakeup(struct wilc *wilc)
 466 {
 467         u32 reg, clk_status_reg;
 468
 469         if ((wilc->io_type & 0x1) == HIF_SPI) {
 470                 do {
 471                         wilc->hif_func->hif_read_reg(wilc, 1, &reg);
 472                         wilc->hif_func->hif_write_reg(wilc, 1, reg | BIT(1));
 473                         wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1));
 474
 475                         do {
 476                                 usleep_range(2 * 1000, 2 * 1000);
 477                                 wilc_get_chipid(wilc, true);
 478                         } while (wilc_get_chipid(wilc, true) == 0);
 479                 } while (wilc_get_chipid(wilc, true) == 0);
 480         } else if ((wilc->io_type & 0x1) == HIF_SDIO)    {
 481                 wilc->hif_func->hif_write_reg(wilc, 0xfa, 1);
 482                 udelay(200);
 483                 wilc->hif_func->hif_read_reg(wilc, 0xf0, &reg);
 484                 do {
 485                         wilc->hif_func->hif_write_reg(wilc, 0xf0,
 486                                                       reg | BIT(0));
 487                         wilc->hif_func->hif_read_reg(wilc, 0xf1,
 488                                                      &clk_status_reg);
 489
 490                         while ((clk_status_reg & 0x1) == 0) {
 491                                 usleep_range(2 * 1000, 2 * 1000);
 492
 493                                 wilc->hif_func->hif_read_reg(wilc, 0xf1,
 494                                                              &clk_status_reg);
 495                         }
 496                         if ((clk_status_reg & 0x1) == 0) {
 497                                 wilc->hif_func->hif_write_reg(wilc, 0xf0,
 498                                                               reg & (~BIT(0)));
 499                         }
 500                 } while ((clk_status_reg & 0x1) == 0);
 501         }
 502
 503         if (chip_ps_state == CHIP_SLEEPING_MANUAL) {
 504                 if (wilc_get_chipid(wilc, false) < 0x1002b0) {
 505                         u32 val32;
 506
 507                         wilc->hif_func->hif_read_reg(wilc, 0x1e1c, &val32);
 508                         val32 |= BIT(6);
 509                         wilc->hif_func->hif_write_reg(wilc, 0x1e1c, val32);
 510
 511                         wilc->hif_func->hif_read_reg(wilc, 0x1e9c, &val32);
 512                         val32 |= BIT(6);
 513                         wilc->hif_func->hif_write_reg(wilc, 0x1e9c, val32);
 514                 }
 515         }
 516         chip_ps_state = CHIP_WAKEDUP;
 517 }
 518 EXPORT_SYMBOL_GPL(chip_wakeup);
 519
 520 void wilc_chip_sleep_manually(struct wilc *wilc)
 521 {
 522         if (chip_ps_state != CHIP_WAKEDUP)
 523                 return;
 524         acquire_bus(wilc, ACQUIRE_ONLY);
 525
 526         chip_allow_sleep(wilc);
 527         wilc->hif_func->hif_write_reg(wilc, 0x10a8, 1);
 528
 529         chip_ps_state = CHIP_SLEEPING_MANUAL;
 530         release_bus(wilc, RELEASE_ONLY);
 531 }
 532 EXPORT_SYMBOL_GPL(wilc_chip_sleep_manually);
 533
 534 void host_wakeup_notify(struct wilc *wilc)
 535 {
 536         acquire_bus(wilc, ACQUIRE_ONLY);
 537         wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
 538         release_bus(wilc, RELEASE_ONLY);
 539 }
 540 EXPORT_SYMBOL_GPL(host_wakeup_notify);
 541
 542 void host_sleep_notify(struct wilc *wilc)
 543 {
 544         acquire_bus(wilc, ACQUIRE_ONLY);
 545         wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
 546         release_bus(wilc, RELEASE_ONLY);
 547 }
 548 EXPORT_SYMBOL_GPL(host_sleep_notify);
 549
 550 int wilc_wlan_handle_txq(struct net_device *dev, u32 *txq_count)
 551 {
 552         int i, entries = 0;
 553         u32 sum;
 554         u32 reg;
 555         u8 *txb;
 556         u32 offset = 0;
 557         int vmm_sz = 0;
 558         struct txq_entry_t *tqe;
 559         int ret = 0;
 560         int counter;
 561         int timeout;
 562         u32 vmm_table[WILC_VMM_TBL_SIZE];
 563         struct wilc_vif *vif;
 564         struct wilc *wilc;
 565
 566         vif = netdev_priv(dev);
 567         wilc = vif->wilc;
 568
 569         txb = wilc->tx_buffer;
 570         wilc->txq_exit = 0;
 571         do {
 572                 if (wilc->quit)
 573                         break;
 574
 575                 mutex_lock(&wilc->txq_add_to_head_cs);
 576                 wilc_wlan_txq_filter_dup_tcp_ack(dev);
 577                 tqe = wilc_wlan_txq_get_first(wilc);
 578                 i = 0;
 579                 sum = 0;
 580                 do {
 581                         if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
 582                                 if (tqe->type == WILC_CFG_PKT)
 583                                         vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
 584
 585                                 else if (tqe->type == WILC_NET_PKT)
 586                                         vmm_sz = ETH_ETHERNET_HDR_OFFSET;
 587
 588                                 else
 589                                         vmm_sz = HOST_HDR_OFFSET;
 590
 591                                 vmm_sz += tqe->buffer_size;
 592
 593                                 if (vmm_sz & 0x3)
 594                                         vmm_sz = (vmm_sz + 4) & ~0x3;
 595
 596                                 if ((sum + vmm_sz) > LINUX_TX_SIZE)
 597                                         break;
 598
 599                                 vmm_table[i] = vmm_sz / 4;
 600                                 if (tqe->type == WILC_CFG_PKT)
 601                                         vmm_table[i] |= BIT(10);
 602                                 vmm_table[i] = cpu_to_le32(vmm_table[i]);
 603
 604                                 i++;
 605                                 sum += vmm_sz;
 606                                 tqe = wilc_wlan_txq_get_next(wilc, tqe);
 607                         } else {
 608                                 break;
 609                         }
 610                 } while (1);
 611
 612                 if (i == 0)
 613                         break;
 614                 vmm_table[i] = 0x0;
 615
 616                 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
 617                 counter = 0;
 618                 do {
 619                         ret = wilc->hif_func->hif_read_reg(wilc,
 620                                                            WILC_HOST_TX_CTRL,
 621                                                            &reg);
 622                         if (!ret)
 623                                 break;
 624
 625                         if ((reg & 0x1) == 0)
 626                                 break;
 627
 628                         counter++;
 629                         if (counter > 200) {
 630                                 counter = 0;
 631                                 ret = wilc->hif_func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
 632                                 break;
 633                         }
 634                 } while (!wilc->quit);
 635
 636                 if (!ret)
 637                         goto _end_;
 638
 639                 timeout = 200;
 640                 do {
 641                         ret = wilc->hif_func->hif_block_tx(wilc, WILC_VMM_TBL_RX_SHADOW_BASE, (u8 *)vmm_table, ((i + 1) * 4));
 642                         if (!ret)
 643                                 break;
 644
 645                         ret = wilc->hif_func->hif_write_reg(wilc,
 646                                                             WILC_HOST_VMM_CTL,
 647                                                             0x2);
 648                         if (!ret)
 649                                 break;
 650
 651                         do {
 652                                 ret = wilc->hif_func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, &reg);
 653                                 if (!ret)
 654                                         break;
 655                                 if ((reg >> 2) & 0x1) {
 656                                         entries = ((reg >> 3) & 0x3f);
 657                                         break;
 658                                 }
 659                                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
 660                         } while (--timeout);
 661                         if (timeout <= 0) {
 662                                 ret = wilc->hif_func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
 663                                 break;
 664                         }
 665
 666                         if (!ret)
 667                                 break;
 668
 669                         if (entries == 0) {
 670                                 ret = wilc->hif_func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, &reg);
 671                                 if (!ret)
 672                                         break;
 673                                 reg &= ~BIT(0);
 674                                 ret = wilc->hif_func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
 675                                 if (!ret)
 676                                         break;
 677                                 break;
 678                         }
 679                         break;
 680                 } while (1);
 681
 682                 if (!ret)
 683                         goto _end_;
 684
 685                 if (entries == 0) {
 686                         ret = WILC_TX_ERR_NO_BUF;
 687                         goto _end_;
 688                 }
 689
 690                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
 691
 692                 offset = 0;
 693                 i = 0;
 694                 do {
 695                         tqe = wilc_wlan_txq_remove_from_head(dev);
 696                         if (tqe && vmm_table[i] != 0) {
 697                                 u32 header, buffer_offset;
 698
 699                                 vmm_table[i] = cpu_to_le32(vmm_table[i]);
 700                                 vmm_sz = (vmm_table[i] & 0x3ff);
 701                                 vmm_sz *= 4;
 702                                 header = (tqe->type << 31) |
 703                                          (tqe->buffer_size << 15) |
 704                                          vmm_sz;
 705                                 if (tqe->type == WILC_MGMT_PKT)
 706                                         header |= BIT(30);
 707                                 else
 708                                         header &= ~BIT(30);
 709
 710                                 header = cpu_to_le32(header);
 711                                 memcpy(&txb[offset], &header, 4);
 712                                 if (tqe->type == WILC_CFG_PKT) {
 713                                         buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
 714                                 } else if (tqe->type == WILC_NET_PKT) {
 715                                         char *bssid = ((struct tx_complete_data *)(tqe->priv))->bssid;
 716
 717                                         buffer_offset = ETH_ETHERNET_HDR_OFFSET;
 718                                         memcpy(&txb[offset + 8], bssid, 6);
 719                                 } else {
 720                                         buffer_offset = HOST_HDR_OFFSET;
 721                                 }
 722
 723                                 memcpy(&txb[offset + buffer_offset],
 724                                        tqe->buffer, tqe->buffer_size);
 725                                 offset += vmm_sz;
 726                                 i++;
 727                                 tqe->status = 1;
 728                                 if (tqe->tx_complete_func)
 729                                         tqe->tx_complete_func(tqe->priv,
 730                                                               tqe->status);
 731                                 if (tqe->tcp_pending_ack_idx != NOT_TCP_ACK &&
 732                                     tqe->tcp_pending_ack_idx < MAX_PENDING_ACKS)
 733                                         pending_acks_info[tqe->tcp_pending_ack_idx].txqe = NULL;
 734                                 kfree(tqe);
 735                         } else {
 736                                 break;
 737                         }
 738                 } while (--entries);
 739
 740                 acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
 741
 742                 ret = wilc->hif_func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
 743                 if (!ret)
 744                         goto _end_;
 745
 746                 ret = wilc->hif_func->hif_block_tx_ext(wilc, 0, txb, offset);
 747                 if (!ret)
 748                         goto _end_;
 749
 750 _end_:
 751
 752                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
 753                 if (ret != 1)
 754                         break;
 755         } while (0);
 756         mutex_unlock(&wilc->txq_add_to_head_cs);
 757
 758         wilc->txq_exit = 1;
 759         *txq_count = wilc->txq_entries;
 760         return ret;
 761 }
 762
 763 static void wilc_wlan_handle_rxq(struct wilc *wilc)
 764 {
 765         int offset = 0, size;
 766         u8 *buffer;
 767         struct rxq_entry_t *rqe;
 768
 769         wilc->rxq_exit = 0;
 770
 771         do {
 772                 if (wilc->quit) {
 773                         complete(&wilc->cfg_event);
 774                         break;
 775                 }
 776                 rqe = wilc_wlan_rxq_remove(wilc);
 777                 if (!rqe)
 778                         break;
 779
 780                 buffer = rqe->buffer;
 781                 size = rqe->buffer_size;
 782                 offset = 0;
 783
 784                 do {
 785                         u32 header;
 786                         u32 pkt_len, pkt_offset, tp_len;
 787                         int is_cfg_packet;
 788
 789                         memcpy(&header, &buffer[offset], 4);
 790                         header = cpu_to_le32(header);
 791
 792                         is_cfg_packet = (header >> 31) & 0x1;
 793                         pkt_offset = (header >> 22) & 0x1ff;
 794                         tp_len = (header >> 11) & 0x7ff;
 795                         pkt_len = header & 0x7ff;
 796
 797                         if (pkt_len == 0 || tp_len == 0)
 798                                 break;
 799
 800                         #define IS_MANAGMEMENT                          0x100
 801                         #define IS_MANAGMEMENT_CALLBACK                 0x080
 802                         #define IS_MGMT_STATUS_SUCCES                   0x040
 803
 804                         if (pkt_offset & IS_MANAGMEMENT) {
 805                                 pkt_offset &= ~(IS_MANAGMEMENT |
 806                                                 IS_MANAGMEMENT_CALLBACK |
 807                                                 IS_MGMT_STATUS_SUCCES);
 808
 809                                 WILC_WFI_mgmt_rx(wilc, &buffer[offset + HOST_HDR_OFFSET], pkt_len);
 810                         } else {
 811                                 if (!is_cfg_packet) {
 812                                         if (pkt_len > 0) {
 813                                                 wilc_frmw_to_linux(wilc,
 814                                                                    &buffer[offset],
 815                                                                    pkt_len,
 816                                                                    pkt_offset);
 817                                         }
 818                                 } else {
 819                                         struct wilc_cfg_rsp rsp;
 820
 821                                         wilc_wlan_cfg_indicate_rx(wilc, &buffer[pkt_offset + offset], pkt_len, &rsp);
 822                                         if (rsp.type == WILC_CFG_RSP) {
 823                                                 if (wilc->cfg_seq_no == rsp.seq_no)
 824                                                         complete(&wilc->cfg_event);
 825                                         } else if (rsp.type == WILC_CFG_RSP_STATUS) {
 826                                                 wilc_mac_indicate(wilc, WILC_MAC_INDICATE_STATUS);
 827
 828                                         } else if (rsp.type == WILC_CFG_RSP_SCAN) {
 829                                                 wilc_mac_indicate(wilc, WILC_MAC_INDICATE_SCAN);
 830                                         }
 831                                 }
 832                         }
 833                         offset += tp_len;
 834                         if (offset >= size)
 835                                 break;
 836                 } while (1);
 837                 kfree(rqe);
 838         } while (1);
 839
 840         wilc->rxq_exit = 1;
 841 }
 842
 843 static void wilc_unknown_isr_ext(struct wilc *wilc)
 844 {
 845         wilc->hif_func->hif_clear_int_ext(wilc, 0);
 846 }
 847
 848 static void wilc_pllupdate_isr_ext(struct wilc *wilc, u32 int_stats)
 849 {
 850         int trials = 10;
 851
 852         wilc->hif_func->hif_clear_int_ext(wilc, PLL_INT_CLR);
 853
 854         if (wilc->io_type == HIF_SDIO)
 855                 mdelay(WILC_PLL_TO_SDIO);
 856         else
 857                 mdelay(WILC_PLL_TO_SPI);
 858
 859         while (!(ISWILC1000(wilc_get_chipid(wilc, true)) && --trials))
 860                 mdelay(1);
 861 }
 862
 863 static void wilc_sleeptimer_isr_ext(struct wilc *wilc, u32 int_stats1)
 864 {
 865         wilc->hif_func->hif_clear_int_ext(wilc, SLEEP_INT_CLR);
 866 }
 867
 868 static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
 869 {
 870         u32 offset = wilc->rx_buffer_offset;
 871         u8 *buffer = NULL;
 872         u32 size;
 873         u32 retries = 0;
 874         int ret = 0;
 875         struct rxq_entry_t *rqe;
 876
 877         size = (int_status & 0x7fff) << 2;
 878
 879         while (!size && retries < 10) {
 880                 wilc->hif_func->hif_read_size(wilc, &size);
 881                 size = (size & 0x7fff) << 2;
 882                 retries++;
 883         }
 884
 885         if (size > 0) {
 886                 if (LINUX_RX_SIZE - offset < size)
 887                         offset = 0;
 888
 889                 if (wilc->rx_buffer)
 890                         buffer = &wilc->rx_buffer[offset];
 891                 else
 892                         goto _end_;
 893
 894                 wilc->hif_func->hif_clear_int_ext(wilc,
 895                                               DATA_INT_CLR | ENABLE_RX_VMM);
 896                 ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
 897
 898 _end_:
 899                 if (ret) {
 900                         offset += size;
 901                         wilc->rx_buffer_offset = offset;
 902                         rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
 903                         if (rqe) {
 904                                 rqe->buffer = buffer;
 905                                 rqe->buffer_size = size;
 906                                 wilc_wlan_rxq_add(wilc, rqe);
 907                         }
 908                 }
 909         }
 910         wilc_wlan_handle_rxq(wilc);
 911 }
 912
 913 void wilc_handle_isr(struct wilc *wilc)
 914 {
 915         u32 int_status;
 916
 917         acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
 918         wilc->hif_func->hif_read_int(wilc, &int_status);
 919
 920         if (int_status & PLL_INT_EXT)
 921                 wilc_pllupdate_isr_ext(wilc, int_status);
 922
 923         if (int_status & DATA_INT_EXT)
 924                 wilc_wlan_handle_isr_ext(wilc, int_status);
 925
 926         if (int_status & SLEEP_INT_EXT)
 927                 wilc_sleeptimer_isr_ext(wilc, int_status);
 928
 929         if (!(int_status & (ALL_INT_EXT)))
 930                 wilc_unknown_isr_ext(wilc);
 931
 932         release_bus(wilc, RELEASE_ALLOW_SLEEP);
 933 }
 934 EXPORT_SYMBOL_GPL(wilc_handle_isr);
 935
 936 int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
 937                                 u32 buffer_size)
 938 {
 939         u32 offset;
 940         u32 addr, size, size2, blksz;
 941         u8 *dma_buffer;
 942         int ret = 0;
 943
 944         blksz = BIT(12);
 945
 946         dma_buffer = kmalloc(blksz, GFP_KERNEL);
 947         if (!dma_buffer)
 948                 return -EIO;
 949
 950         offset = 0;
 951         do {
 952                 memcpy(&addr, &buffer[offset], 4);
 953                 memcpy(&size, &buffer[offset + 4], 4);
 954                 addr = cpu_to_le32(addr);
 955                 size = cpu_to_le32(size);
 956                 acquire_bus(wilc, ACQUIRE_ONLY);
 957                 offset += 8;
 958                 while (((int)size) && (offset < buffer_size)) {
 959                         if (size <= blksz)
 960                                 size2 = size;
 961                         else
 962                                 size2 = blksz;
 963
 964                         memcpy(dma_buffer, &buffer[offset], size2);
 965                         ret = wilc->hif_func->hif_block_tx(wilc, addr,
 966                                                            dma_buffer, size2);
 967                         if (!ret)
 968                                 break;
 969
 970                         addr += size2;
 971                         offset += size2;
 972                         size -= size2;
 973                 }
 974                 release_bus(wilc, RELEASE_ONLY);
 975
 976                 if (!ret) {
 977                         ret = -EIO;
 978                         goto _fail_;
 979                 }
 980         } while (offset < buffer_size);
 981
 982 _fail_:
 983
 984         kfree(dma_buffer);
 985
 986         return (ret < 0) ? ret : 0;
 987 }
 988
 989 int wilc_wlan_start(struct wilc *wilc)
 990 {
 991         u32 reg = 0;
 992         int ret;
 993         u32 chipid;
 994
 995         if (wilc->io_type == HIF_SDIO) {
 996                 reg = 0;
 997                 reg |= BIT(3);
 998         } else if (wilc->io_type == HIF_SPI) {
 999                 reg = 1;
1000         }
1001         acquire_bus(wilc, ACQUIRE_ONLY);
1002         ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
1003         if (!ret) {
1004                 release_bus(wilc, RELEASE_ONLY);
1005                 return -EIO;
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                 return -EIO;
1038         }
1039
1040         wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
1041
1042         ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
1043         if (!ret) {
1044                 release_bus(wilc, RELEASE_ONLY);
1045                 return -EIO;
1046         }
1047
1048         wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1049         if ((reg & BIT(10)) == BIT(10)) {
1050                 reg &= ~BIT(10);
1051                 wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1052                 wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1053         }
1054
1055         reg |= BIT(10);
1056         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1057         wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1058         release_bus(wilc, RELEASE_ONLY);
1059
1060         return (ret < 0) ? ret : 0;
1061 }
1062
1063 int wilc_wlan_stop(struct wilc *wilc)
1064 {
1065         u32 reg = 0;
1066         int ret;
1067         u8 timeout = 10;
1068
1069         acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
1070
1071         ret = wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
1072         if (!ret) {
1073                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1074                 return ret;
1075         }
1076
1077         reg &= ~BIT(10);
1078         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1079         if (!ret) {
1080                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1081                 return ret;
1082         }
1083
1084         do {
1085                 ret = wilc->hif_func->hif_read_reg(wilc,
1086                                                    WILC_GLB_RESET_0, &reg);
1087                 if (!ret) {
1088                         release_bus(wilc, RELEASE_ALLOW_SLEEP);
1089                         return ret;
1090                 }
1091
1092                 if ((reg & BIT(10))) {
1093                         reg &= ~BIT(10);
1094                         ret = wilc->hif_func->hif_write_reg(wilc,
1095                                                             WILC_GLB_RESET_0,
1096                                                             reg);
1097                         timeout--;
1098                 } else {
1099                         ret = wilc->hif_func->hif_read_reg(wilc,
1100                                                            WILC_GLB_RESET_0,
1101                                                            &reg);
1102                         if (!ret) {
1103                                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1104                                 return ret;
1105                         }
1106                         break;
1107                 }
1108
1109         } while (timeout);
1110         reg = (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(8) | BIT(9) | BIT(26) |
1111                BIT(29) | BIT(30) | BIT(31));
1112
1113         wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1114         reg = (u32)~BIT(10);
1115
1116         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
1117
1118         release_bus(wilc, RELEASE_ALLOW_SLEEP);
1119
1120         return ret;
1121 }
1122
1123 void wilc_wlan_cleanup(struct net_device *dev)
1124 {
1125         struct txq_entry_t *tqe;
1126         struct rxq_entry_t *rqe;
1127         u32 reg = 0;
1128         int ret;
1129         struct wilc_vif *vif;
1130         struct wilc *wilc;
1131
1132         vif = netdev_priv(dev);
1133         wilc = vif->wilc;
1134
1135         wilc->quit = 1;
1136         do {
1137                 tqe = wilc_wlan_txq_remove_from_head(dev);
1138                 if (!tqe)
1139                         break;
1140                 if (tqe->tx_complete_func)
1141                         tqe->tx_complete_func(tqe->priv, 0);
1142                 kfree(tqe);
1143         } while (1);
1144
1145         do {
1146                 rqe = wilc_wlan_rxq_remove(wilc);
1147                 if (!rqe)
1148                         break;
1149                 kfree(rqe);
1150         } while (1);
1151
1152         kfree(wilc->rx_buffer);
1153         wilc->rx_buffer = NULL;
1154         kfree(wilc->tx_buffer);
1155         wilc->tx_buffer = NULL;
1156
1157         acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
1158
1159         ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, &reg);
1160         if (!ret)
1161                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1162
1163         ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
1164                                         (reg | ABORT_INT));
1165         if (!ret)
1166                 release_bus(wilc, RELEASE_ALLOW_SLEEP);
1167
1168         release_bus(wilc, RELEASE_ALLOW_SLEEP);
1169         wilc->hif_func->hif_deinit(NULL);
1170 }
1171
1172 static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
1173                                 u32 drv_handler)
1174 {
1175         struct wilc *wilc = vif->wilc;
1176         struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
1177         int total_len = wilc->cfg_frame_offset + 4 + DRIVER_HANDLER_SIZE;
1178         int seq_no = wilc->cfg_seq_no % 256;
1179         int driver_handler = (u32)drv_handler;
1180
1181         if (type == WILC_CFG_SET)
1182                 cfg->wid_header[0] = 'W';
1183         else
1184                 cfg->wid_header[0] = 'Q';
1185         cfg->wid_header[1] = seq_no;
1186         cfg->wid_header[2] = (u8)total_len;
1187         cfg->wid_header[3] = (u8)(total_len >> 8);
1188         cfg->wid_header[4] = (u8)driver_handler;
1189         cfg->wid_header[5] = (u8)(driver_handler >> 8);
1190         cfg->wid_header[6] = (u8)(driver_handler >> 16);
1191         cfg->wid_header[7] = (u8)(driver_handler >> 24);
1192         wilc->cfg_seq_no = seq_no;
1193
1194         if (!wilc_wlan_txq_add_cfg_pkt(vif, &cfg->wid_header[0], total_len))
1195                 return -1;
1196
1197         return 0;
1198 }
1199
1200 int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer,
1201                       u32 buffer_size, int commit, u32 drv_handler)
1202 {
1203         u32 offset;
1204         int ret_size;
1205         struct wilc *wilc = vif->wilc;
1206
1207         if (wilc->cfg_frame_in_use)
1208                 return 0;
1209
1210         if (start)
1211                 wilc->cfg_frame_offset = 0;
1212
1213         offset = wilc->cfg_frame_offset;
1214         ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
1215                                          wid, buffer, buffer_size);
1216         offset += ret_size;
1217         wilc->cfg_frame_offset = offset;
1218
1219         if (commit) {
1220                 netdev_dbg(vif->ndev,
1221                            "[WILC]PACKET Commit with sequence number %d\n",
1222                            wilc->cfg_seq_no);
1223                 netdev_dbg(vif->ndev, "Processing cfg_set()\n");
1224                 wilc->cfg_frame_in_use = 1;
1225
1226                 if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
1227                         ret_size = 0;
1228
1229                 if (!wait_for_completion_timeout(&wilc->cfg_event,
1230                                                  msecs_to_jiffies(CFG_PKTS_TIMEOUT))) {
1231                         netdev_dbg(vif->ndev, "Set Timed Out\n");
1232                         ret_size = 0;
1233                 }
1234
1235                 wilc->cfg_frame_in_use = 0;
1236                 wilc->cfg_frame_offset = 0;
1237                 wilc->cfg_seq_no += 1;
1238         }
1239
1240         return ret_size;
1241 }
1242
1243 int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit,
1244                       u32 drv_handler)
1245 {
1246         u32 offset;
1247         int ret_size;
1248         struct wilc *wilc = vif->wilc;
1249
1250         if (wilc->cfg_frame_in_use)
1251                 return 0;
1252
1253         if (start)
1254                 wilc->cfg_frame_offset = 0;
1255
1256         offset = wilc->cfg_frame_offset;
1257         ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid);
1258         offset += ret_size;
1259         wilc->cfg_frame_offset = offset;
1260
1261         if (commit) {
1262                 wilc->cfg_frame_in_use = 1;
1263
1264                 if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
1265                         ret_size = 0;
1266
1267                 if (!wait_for_completion_timeout(&wilc->cfg_event,
1268                                         msecs_to_jiffies(CFG_PKTS_TIMEOUT))) {
1269                         netdev_dbg(vif->ndev, "Get Timed Out\n");
1270                         ret_size = 0;
1271                 }
1272                 wilc->cfg_frame_in_use = 0;
1273                 wilc->cfg_frame_offset = 0;
1274                 wilc->cfg_seq_no += 1;
1275         }
1276
1277         return ret_size;
1278 }
1279
1280 int wilc_wlan_cfg_get_val(u16 wid, u8 *buffer, u32 buffer_size)
1281 {
1282         return wilc_wlan_cfg_get_wid_value(wid, buffer, buffer_size);
1283 }
1284
1285 int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
1286                          u32 count, u32 drv)
1287 {
1288         int i;
1289         int ret = 0;
1290
1291         if (mode == GET_CFG) {
1292                 for (i = 0; i < count; i++) {
1293                         if (!wilc_wlan_cfg_get(vif, !i,
1294                                                wids[i].id,
1295                                                (i == count - 1),
1296                                                drv)) {
1297                                 ret = -ETIMEDOUT;
1298                                 break;
1299                         }
1300                 }
1301                 for (i = 0; i < count; i++) {
1302                         wids[i].size = wilc_wlan_cfg_get_val(wids[i].id,
1303                                                              wids[i].val,
1304                                                              wids[i].size);
1305                 }
1306         } else if (mode == SET_CFG) {
1307                 for (i = 0; i < count; i++) {
1308                         if (!wilc_wlan_cfg_set(vif, !i,
1309                                                wids[i].id,
1310                                                wids[i].val,
1311                                                wids[i].size,
1312                                                (i == count - 1),
1313                                                drv)) {
1314                                 ret = -ETIMEDOUT;
1315                                 break;
1316                         }
1317                 }
1318         }
1319
1320         return ret;
1321 }
1322
1323 static u32 init_chip(struct net_device *dev)
1324 {
1325         u32 chipid;
1326         u32 reg, ret = 0;
1327         struct wilc_vif *vif;
1328         struct wilc *wilc;
1329
1330         vif = netdev_priv(dev);
1331         wilc = vif->wilc;
1332
1333         acquire_bus(wilc, ACQUIRE_ONLY);
1334
1335         chipid = wilc_get_chipid(wilc, true);
1336
1337         if ((chipid & 0xfff) != 0xa0) {
1338                 ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, &reg);
1339                 if (!ret) {
1340                         netdev_err(dev, "fail read reg 0x1118\n");
1341                         return ret;
1342                 }
1343                 reg |= BIT(0);
1344                 ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
1345                 if (!ret) {
1346                         netdev_err(dev, "fail write reg 0x1118\n");
1347                         return ret;
1348                 }
1349                 ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
1350                 if (!ret) {
1351                         netdev_err(dev, "fail write reg 0xc0000\n");
1352                         return ret;
1353                 }
1354         }
1355
1356         release_bus(wilc, RELEASE_ONLY);
1357
1358         return ret;
1359 }
1360
1361 u32 wilc_get_chipid(struct wilc *wilc, bool update)
1362 {
1363         static u32 chipid;
1364         u32 tempchipid = 0;
1365         u32 rfrevid = 0;
1366
1367         if (chipid == 0 || update) {
1368                 wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
1369                 wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
1370                 if (!ISWILC1000(tempchipid)) {
1371                         chipid = 0;
1372                         return chipid;
1373                 }
1374                 if (tempchipid == 0x1002a0) {
1375                         if (rfrevid != 0x1)
1376                                 tempchipid = 0x1002a1;
1377                 } else if (tempchipid == 0x1002b0) {
1378                         if (rfrevid == 0x4)
1379                                 tempchipid = 0x1002b1;
1380                         else if (rfrevid != 0x3)
1381                                 tempchipid = 0x1002b2;
1382                 }
1383
1384                 chipid = tempchipid;
1385         }
1386         return chipid;
1387 }
1388
1389 int wilc_wlan_init(struct net_device *dev)
1390 {
1391         int ret = 0;
1392         struct wilc_vif *vif = netdev_priv(dev);
1393         struct wilc *wilc;
1394
1395         wilc = vif->wilc;
1396
1397         wilc->quit = 0;
1398
1399         if (!wilc->hif_func->hif_init(wilc, false)) {
1400                 ret = -EIO;
1401                 goto _fail_;
1402         }
1403
1404         if (!wilc_wlan_cfg_init()) {
1405                 ret = -ENOBUFS;
1406                 goto _fail_;
1407         }
1408
1409         if (!wilc->tx_buffer)
1410                 wilc->tx_buffer = kmalloc(LINUX_TX_SIZE, GFP_KERNEL);
1411
1412         if (!wilc->tx_buffer) {
1413                 ret = -ENOBUFS;
1414                 goto _fail_;
1415         }
1416
1417         if (!wilc->rx_buffer)
1418                 wilc->rx_buffer = kmalloc(LINUX_RX_SIZE, GFP_KERNEL);
1419
1420         if (!wilc->rx_buffer) {
1421                 ret = -ENOBUFS;
1422                 goto _fail_;
1423         }
1424
1425         if (!init_chip(dev)) {
1426                 ret = -EIO;
1427                 goto _fail_;
1428         }
1429
1430         return 1;
1431
1432 _fail_:
1433
1434         kfree(wilc->rx_buffer);
1435         wilc->rx_buffer = NULL;
1436         kfree(wilc->tx_buffer);
1437         wilc->tx_buffer = NULL;
1438
1439         return ret;
1440 }