drivers/net/wireless/iwmc3200wifi/rx.c

   1 /*
   2  * Intel Wireless Multicomm 3200 WiFi driver
   3  *
   4  * Copyright (C) 2009 Intel Corporation. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  *   * Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *   * Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in
  14  *     the documentation and/or other materials provided with the
  15  *     distribution.
  16  *   * Neither the name of Intel Corporation nor the names of its
  17  *     contributors may be used to endorse or promote products derived
  18  *     from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  *
  33  * Intel Corporation <ilw@linux.intel.com>
  34  * Samuel Ortiz <samuel.ortiz@intel.com>
  35  * Zhu Yi <yi.zhu@intel.com>
  36  *
  37  */
  38
  39 #include <linux/kernel.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/wireless.h>
  43 #include <linux/ieee80211.h>
  44 #include <linux/if_arp.h>
  45 #include <linux/list.h>
  46 #include <net/iw_handler.h>
  47
  48 #include "iwm.h"
  49 #include "debug.h"
  50 #include "hal.h"
  51 #include "umac.h"
  52 #include "lmac.h"
  53 #include "commands.h"
  54 #include "rx.h"
  55 #include "cfg80211.h"
  56 #include "eeprom.h"
  57
  58 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
  59 {
  60         if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
  61             (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
  62                 return -EINVAL;
  63
  64         return 0;
  65 }
  66
  67 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
  68 {
  69         return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
  70                      16);
  71 }
  72
  73 /*
  74  * Notification handlers:
  75  *
  76  * For every possible notification we can receive from the
  77  * target, we have a handler.
  78  * When we get a target notification, and there is no one
  79  * waiting for it, it's just processed through the rx code
  80  * path:
  81  *
  82  * iwm_rx_handle()
  83  *  -> iwm_rx_handle_umac()
  84  *      -> iwm_rx_handle_wifi()
  85  *          -> iwm_rx_handle_resp()
  86  *              -> iwm_ntf_*()
  87  *
  88  *      OR
  89  *
  90  *      -> iwm_rx_handle_non_wifi()
  91  *
  92  * If there are processes waiting for this notification, then
  93  * iwm_rx_handle_wifi() just wakes those processes up and they
  94  * grab the pending notification.
  95  */
  96 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
  97                          unsigned long buf_size, struct iwm_wifi_cmd *cmd)
  98 {
  99         struct iwm_umac_notif_error *error;
 100         struct iwm_fw_error_hdr *fw_err;
 101
 102         error = (struct iwm_umac_notif_error *)buf;
 103         fw_err = &error->err;
 104
 105         memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
 106
 107         IWM_ERR(iwm, "%cMAC FW ERROR:\n",
 108          (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
 109         IWM_ERR(iwm, "\tCategory:    %d\n", le32_to_cpu(fw_err->category));
 110         IWM_ERR(iwm, "\tStatus:      0x%x\n", le32_to_cpu(fw_err->status));
 111         IWM_ERR(iwm, "\tPC:          0x%x\n", le32_to_cpu(fw_err->pc));
 112         IWM_ERR(iwm, "\tblink1:      %d\n", le32_to_cpu(fw_err->blink1));
 113         IWM_ERR(iwm, "\tblink2:      %d\n", le32_to_cpu(fw_err->blink2));
 114         IWM_ERR(iwm, "\tilink1:      %d\n", le32_to_cpu(fw_err->ilink1));
 115         IWM_ERR(iwm, "\tilink2:      %d\n", le32_to_cpu(fw_err->ilink2));
 116         IWM_ERR(iwm, "\tData1:       0x%x\n", le32_to_cpu(fw_err->data1));
 117         IWM_ERR(iwm, "\tData2:       0x%x\n", le32_to_cpu(fw_err->data2));
 118         IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
 119         IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
 120         IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
 121         IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
 122
 123         iwm_resetting(iwm);
 124
 125         return 0;
 126 }
 127
 128 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
 129                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 130 {
 131         struct iwm_umac_notif_alive *alive_resp =
 132                         (struct iwm_umac_notif_alive *)(buf);
 133         u16 status = le16_to_cpu(alive_resp->status);
 134
 135         if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
 136                 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
 137                 return -EIO;
 138         }
 139
 140         iwm_tx_credit_init_pools(iwm, alive_resp);
 141
 142         return 0;
 143 }
 144
 145 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
 146                                  unsigned long buf_size,
 147                                  struct iwm_wifi_cmd *cmd)
 148 {
 149         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 150         struct iwm_umac_notif_init_complete *init_complete =
 151                         (struct iwm_umac_notif_init_complete *)(buf);
 152         u16 status = le16_to_cpu(init_complete->status);
 153         bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
 154
 155         if (blocked)
 156                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
 157         else
 158                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
 159
 160         wiphy_rfkill_set_hw_state(wiphy, blocked);
 161
 162         return 0;
 163 }
 164
 165 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
 166                                     unsigned long buf_size,
 167                                     struct iwm_wifi_cmd *cmd)
 168 {
 169         int pool_nr, total_freed_pages;
 170         unsigned long pool_map;
 171         int i, id;
 172         struct iwm_umac_notif_page_dealloc *dealloc =
 173                         (struct iwm_umac_notif_page_dealloc *)buf;
 174
 175         pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
 176         pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
 177
 178         IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
 179                    "update map 0x%lx\n", pool_nr, pool_map);
 180
 181         spin_lock(&iwm->tx_credit.lock);
 182
 183         for (i = 0; i < pool_nr; i++) {
 184                 id = GET_VAL32(dealloc->grp_info[i],
 185                                UMAC_DEALLOC_NTFY_GROUP_NUM);
 186                 if (test_bit(id, &pool_map)) {
 187                         total_freed_pages = GET_VAL32(dealloc->grp_info[i],
 188                                               UMAC_DEALLOC_NTFY_PAGE_CNT);
 189                         iwm_tx_credit_inc(iwm, id, total_freed_pages);
 190                 }
 191         }
 192
 193         spin_unlock(&iwm->tx_credit.lock);
 194
 195         return 0;
 196 }
 197
 198 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
 199                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 200 {
 201         IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
 202
 203         return 0;
 204 }
 205
 206 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
 207                                 unsigned long buf_size,
 208                                 struct iwm_wifi_cmd *cmd)
 209 {
 210         IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
 211
 212         return 0;
 213 }
 214
 215 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
 216                       unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 217 {
 218         struct iwm_lmac_tx_resp *tx_resp;
 219         struct iwm_umac_wifi_in_hdr *hdr;
 220
 221         tx_resp = (struct iwm_lmac_tx_resp *)
 222                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 223         hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 224
 225         IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
 226
 227         IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
 228                    le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
 229         IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
 230         IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
 231                    le16_to_cpu(tx_resp->retry_cnt));
 232         IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
 233         IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
 234                    le16_to_cpu(tx_resp->byte_cnt));
 235         IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
 236
 237         return 0;
 238 }
 239
 240
 241 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
 242                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 243 {
 244         u8 opcode;
 245         u8 *calib_buf;
 246         struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
 247                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 248
 249         opcode = hdr->opcode;
 250
 251         BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
 252                opcode < PHY_CALIBRATE_OPCODES_NUM);
 253
 254         IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
 255                     opcode);
 256
 257         buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
 258         calib_buf = iwm->calib_res[opcode].buf;
 259
 260         if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
 261                 kfree(calib_buf);
 262                 calib_buf = kzalloc(buf_size, GFP_KERNEL);
 263                 if (!calib_buf) {
 264                         IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
 265                         return -ENOMEM;
 266                 }
 267                 iwm->calib_res[opcode].buf = calib_buf;
 268                 iwm->calib_res[opcode].size = buf_size;
 269         }
 270
 271         memcpy(calib_buf, hdr, buf_size);
 272         set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
 273
 274         return 0;
 275 }
 276
 277 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
 278                                   unsigned long buf_size,
 279                                   struct iwm_wifi_cmd *cmd)
 280 {
 281         IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
 282
 283         return 0;
 284 }
 285
 286 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
 287                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 288 {
 289         struct iwm_lmac_cal_cfg_resp *cal_resp;
 290
 291         cal_resp = (struct iwm_lmac_cal_cfg_resp *)
 292                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 293
 294         IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
 295                     le32_to_cpu(cal_resp->status));
 296
 297         return 0;
 298 }
 299
 300 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
 301                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 302 {
 303         struct iwm_umac_notif_wifi_status *status =
 304                 (struct iwm_umac_notif_wifi_status *)buf;
 305
 306         iwm->core_enabled |= le16_to_cpu(status->status);
 307
 308         return 0;
 309 }
 310
 311 static struct iwm_rx_ticket_node *
 312 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
 313 {
 314         struct iwm_rx_ticket_node *ticket_node;
 315
 316         ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
 317         if (!ticket_node) {
 318                 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
 319                 return ERR_PTR(-ENOMEM);
 320         }
 321
 322         ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
 323         if (!ticket_node->ticket) {
 324                 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
 325                 kfree(ticket_node);
 326                 return ERR_PTR(-ENOMEM);
 327         }
 328
 329         memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
 330         INIT_LIST_HEAD(&ticket_node->node);
 331
 332         return ticket_node;
 333 }
 334
 335 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
 336 {
 337         kfree(ticket_node->ticket);
 338         kfree(ticket_node);
 339 }
 340
 341 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
 342 {
 343         u8 id_hash = IWM_RX_ID_GET_HASH(id);
 344         struct list_head *packet_list;
 345         struct iwm_rx_packet *packet, *next;
 346
 347         packet_list = &iwm->rx_packets[id_hash];
 348
 349         list_for_each_entry_safe(packet, next, packet_list, node)
 350                 if (packet->id == id)
 351                         return packet;
 352
 353         return NULL;
 354 }
 355
 356 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
 357                                                  u32 size, u16 id)
 358 {
 359         struct iwm_rx_packet *packet;
 360
 361         packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
 362         if (!packet) {
 363                 IWM_ERR(iwm, "Couldn't allocate packet\n");
 364                 return ERR_PTR(-ENOMEM);
 365         }
 366
 367         packet->skb = dev_alloc_skb(size);
 368         if (!packet->skb) {
 369                 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
 370                 kfree(packet);
 371                 return ERR_PTR(-ENOMEM);
 372         }
 373
 374         packet->pkt_size = size;
 375
 376         skb_put(packet->skb, size);
 377         memcpy(packet->skb->data, buf, size);
 378         INIT_LIST_HEAD(&packet->node);
 379         packet->id = id;
 380
 381         return packet;
 382 }
 383
 384 void iwm_rx_free(struct iwm_priv *iwm)
 385 {
 386         struct iwm_rx_ticket_node *ticket, *nt;
 387         struct iwm_rx_packet *packet, *np;
 388         int i;
 389
 390         list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
 391                 list_del(&ticket->node);
 392                 iwm_rx_ticket_node_free(ticket);
 393         }
 394
 395         for (i = 0; i < IWM_RX_ID_HASH; i++) {
 396                 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
 397                                          node) {
 398                         list_del(&packet->node);
 399                         kfree_skb(packet->skb);
 400                         kfree(packet);
 401                 }
 402         }
 403 }
 404
 405 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
 406                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 407 {
 408         struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
 409                 (struct iwm_umac_notif_rx_ticket *)buf;
 410         struct iwm_rx_ticket *ticket =
 411                 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
 412         int i, schedule_rx = 0;
 413
 414         for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
 415                 struct iwm_rx_ticket_node *ticket_node;
 416
 417                 switch (le16_to_cpu(ticket->action)) {
 418                 case IWM_RX_TICKET_RELEASE:
 419                 case IWM_RX_TICKET_DROP:
 420                         /* We can push the packet to the stack */
 421                         ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
 422                         if (IS_ERR(ticket_node))
 423                                 return PTR_ERR(ticket_node);
 424
 425                         IWM_DBG_RX(iwm, DBG, "TICKET RELEASE(%d)\n",
 426                                    ticket->id);
 427                         list_add_tail(&ticket_node->node, &iwm->rx_tickets);
 428
 429                         /*
 430                          * We received an Rx ticket, most likely there's
 431                          * a packet pending for it, it's not worth going
 432                          * through the packet hash list to double check.
 433                          * Let's just fire the rx worker..
 434                          */
 435                         schedule_rx = 1;
 436
 437                         break;
 438
 439                 default:
 440                         IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
 441                                 ticket->action);
 442                 }
 443
 444                 ticket++;
 445         }
 446
 447         if (schedule_rx)
 448                 queue_work(iwm->rx_wq, &iwm->rx_worker);
 449
 450         return 0;
 451 }
 452
 453 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
 454                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 455 {
 456         struct iwm_umac_wifi_in_hdr *wifi_hdr;
 457         struct iwm_rx_packet *packet;
 458         u16 id, buf_offset;
 459         u32 packet_size;
 460
 461         IWM_DBG_RX(iwm, DBG, "\n");
 462
 463         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 464         id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
 465         buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
 466         packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
 467
 468         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
 469                    wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
 470         IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
 471         IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
 472
 473         packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
 474         if (IS_ERR(packet))
 475                 return PTR_ERR(packet);
 476
 477         list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
 478
 479         /* We might (unlikely) have received the packet _after_ the ticket */
 480         queue_work(iwm->rx_wq, &iwm->rx_worker);
 481
 482         return 0;
 483 }
 484
 485 /* MLME handlers */
 486 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
 487                                 unsigned long buf_size,
 488                                 struct iwm_wifi_cmd *cmd)
 489 {
 490         struct iwm_umac_notif_assoc_start *start;
 491
 492         start = (struct iwm_umac_notif_assoc_start *)buf;
 493
 494         IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
 495                      start->bssid, le32_to_cpu(start->roam_reason));
 496
 497         wake_up_interruptible(&iwm->mlme_queue);
 498
 499         return 0;
 500 }
 501
 502 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
 503                                    unsigned long buf_size,
 504                                    struct iwm_wifi_cmd *cmd)
 505 {
 506         struct iwm_umac_notif_assoc_complete *complete =
 507                 (struct iwm_umac_notif_assoc_complete *)buf;
 508
 509         IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
 510                      complete->bssid, complete->status);
 511
 512         switch (le32_to_cpu(complete->status)) {
 513         case UMAC_ASSOC_COMPLETE_SUCCESS:
 514                 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 515                 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
 516                 iwm->channel = complete->channel;
 517
 518                 /* Internal roaming state, avoid notifying SME. */
 519                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 520                     && iwm->conf.mode == UMAC_MODE_BSS) {
 521                         cancel_delayed_work(&iwm->disconnect);
 522                         cfg80211_roamed(iwm_to_ndev(iwm),
 523                                         complete->bssid,
 524                                         iwm->req_ie, iwm->req_ie_len,
 525                                         iwm->resp_ie, iwm->resp_ie_len,
 526                                         GFP_KERNEL);
 527                         break;
 528                 }
 529
 530                 iwm_link_on(iwm);
 531
 532                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 533                         goto ibss;
 534
 535                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 536                         cfg80211_connect_result(iwm_to_ndev(iwm),
 537                                                 complete->bssid,
 538                                                 iwm->req_ie, iwm->req_ie_len,
 539                                                 iwm->resp_ie, iwm->resp_ie_len,
 540                                                 WLAN_STATUS_SUCCESS,
 541                                                 GFP_KERNEL);
 542                 else
 543                         cfg80211_roamed(iwm_to_ndev(iwm),
 544                                         complete->bssid,
 545                                         iwm->req_ie, iwm->req_ie_len,
 546                                         iwm->resp_ie, iwm->resp_ie_len,
 547                                         GFP_KERNEL);
 548                 break;
 549         case UMAC_ASSOC_COMPLETE_FAILURE:
 550                 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 551                 memset(iwm->bssid, 0, ETH_ALEN);
 552                 iwm->channel = 0;
 553
 554                 /* Internal roaming state, avoid notifying SME. */
 555                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 556                     && iwm->conf.mode == UMAC_MODE_BSS) {
 557                         cancel_delayed_work(&iwm->disconnect);
 558                         break;
 559                 }
 560
 561                 iwm_link_off(iwm);
 562
 563                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 564                         goto ibss;
 565
 566                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 567                         cfg80211_connect_result(iwm_to_ndev(iwm),
 568                                                 complete->bssid,
 569                                                 NULL, 0, NULL, 0,
 570                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
 571                                                 GFP_KERNEL);
 572                 else
 573                         cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
 574                                               GFP_KERNEL);
 575                 break;
 576         default:
 577                 break;
 578         }
 579
 580         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 581         return 0;
 582
 583  ibss:
 584         cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
 585         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 586         return 0;
 587 }
 588
 589 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
 590                                        unsigned long buf_size,
 591                                        struct iwm_wifi_cmd *cmd)
 592 {
 593         struct iwm_umac_notif_profile_invalidate *invalid;
 594         u32 reason;
 595
 596         invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
 597         reason = le32_to_cpu(invalid->reason);
 598
 599         IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
 600
 601         if (reason != UMAC_PROFILE_INVALID_REQUEST &&
 602             test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
 603                 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
 604                                         0, WLAN_STATUS_UNSPECIFIED_FAILURE,
 605                                         GFP_KERNEL);
 606
 607         clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
 608         clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 609
 610         iwm->umac_profile_active = 0;
 611         memset(iwm->bssid, 0, ETH_ALEN);
 612         iwm->channel = 0;
 613
 614         iwm_link_off(iwm);
 615
 616         wake_up_interruptible(&iwm->mlme_queue);
 617
 618         return 0;
 619 }
 620
 621 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
 622
 623 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
 624                                           unsigned long buf_size,
 625                                           struct iwm_wifi_cmd *cmd)
 626 {
 627         IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
 628
 629         schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
 630
 631         return 0;
 632 }
 633
 634 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
 635                                   unsigned long buf_size,
 636                                   struct iwm_wifi_cmd *cmd)
 637 {
 638         int ret;
 639         struct iwm_umac_notif_scan_complete *scan_complete =
 640                 (struct iwm_umac_notif_scan_complete *)buf;
 641         u32 result = le32_to_cpu(scan_complete->result);
 642
 643         IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
 644                      le32_to_cpu(scan_complete->type),
 645                      le32_to_cpu(scan_complete->result),
 646                      scan_complete->seq_num);
 647
 648         if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
 649                 IWM_ERR(iwm, "Scan complete while device not scanning\n");
 650                 return -EIO;
 651         }
 652         if (!iwm->scan_request)
 653                 return 0;
 654
 655         ret = iwm_cfg80211_inform_bss(iwm);
 656
 657         cfg80211_scan_done(iwm->scan_request,
 658                            (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
 659         iwm->scan_request = NULL;
 660
 661         return ret;
 662 }
 663
 664 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
 665                                      unsigned long buf_size,
 666                                      struct iwm_wifi_cmd *cmd)
 667 {
 668         struct iwm_umac_notif_sta_info *umac_sta =
 669                         (struct iwm_umac_notif_sta_info *)buf;
 670         struct iwm_sta_info *sta;
 671         int i;
 672
 673         switch (le32_to_cpu(umac_sta->opcode)) {
 674         case UMAC_OPCODE_ADD_MODIFY:
 675                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 676
 677                 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
 678                              "addr = %pM, qos = %d\n",
 679                              sta->valid ? "Modify" : "Add",
 680                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 681                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 682                              umac_sta->mac_addr,
 683                              umac_sta->flags & UMAC_STA_FLAG_QOS);
 684
 685                 sta->valid = 1;
 686                 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
 687                 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
 688                 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
 689                 break;
 690         case UMAC_OPCODE_REMOVE:
 691                 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
 692                              "addr = %pM\n",
 693                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 694                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 695                              umac_sta->mac_addr);
 696
 697                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 698
 699                 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
 700                         sta->valid = 0;
 701
 702                 break;
 703         case UMAC_OPCODE_CLEAR_ALL:
 704                 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
 705                         iwm->sta_table[i].valid = 0;
 706
 707                 break;
 708         default:
 709                 break;
 710         }
 711
 712         return 0;
 713 }
 714
 715 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
 716                                      unsigned long buf_size,
 717                                      struct iwm_wifi_cmd *cmd)
 718 {
 719         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 720         struct ieee80211_mgmt *mgmt;
 721         struct iwm_umac_notif_bss_info *umac_bss =
 722                         (struct iwm_umac_notif_bss_info *)buf;
 723         struct ieee80211_channel *channel;
 724         struct ieee80211_supported_band *band;
 725         struct iwm_bss_info *bss, *next;
 726         s32 signal;
 727         int freq;
 728         u16 frame_len = le16_to_cpu(umac_bss->frame_len);
 729         size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
 730
 731         mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
 732
 733         IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
 734         IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
 735         IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
 736                      le32_to_cpu(umac_bss->timestamp));
 737         IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
 738                      le16_to_cpu(umac_bss->table_idx));
 739         IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
 740         IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
 741         IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
 742         IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
 743
 744         list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 745                 if (bss->bss->table_idx == umac_bss->table_idx)
 746                         break;
 747
 748         if (&bss->node != &iwm->bss_list) {
 749                 /* Remove the old BSS entry, we will add it back later. */
 750                 list_del(&bss->node);
 751                 kfree(bss->bss);
 752         } else {
 753                 /* New BSS entry */
 754
 755                 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
 756                 if (!bss) {
 757                         IWM_ERR(iwm, "Couldn't allocate bss_info\n");
 758                         return -ENOMEM;
 759                 }
 760         }
 761
 762         bss->bss = kzalloc(bss_len, GFP_KERNEL);
 763         if (!bss) {
 764                 kfree(bss);
 765                 IWM_ERR(iwm, "Couldn't allocate bss\n");
 766                 return -ENOMEM;
 767         }
 768
 769         INIT_LIST_HEAD(&bss->node);
 770         memcpy(bss->bss, umac_bss, bss_len);
 771
 772         if (umac_bss->band == UMAC_BAND_2GHZ)
 773                 band = wiphy->bands[IEEE80211_BAND_2GHZ];
 774         else if (umac_bss->band == UMAC_BAND_5GHZ)
 775                 band = wiphy->bands[IEEE80211_BAND_5GHZ];
 776         else {
 777                 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
 778                 goto err;
 779         }
 780
 781         freq = ieee80211_channel_to_frequency(umac_bss->channel);
 782         channel = ieee80211_get_channel(wiphy, freq);
 783         signal = umac_bss->rssi * 100;
 784
 785         bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
 786                                                  mgmt, frame_len,
 787                                                  signal, GFP_KERNEL);
 788         if (!bss->cfg_bss)
 789                 goto err;
 790
 791         list_add_tail(&bss->node, &iwm->bss_list);
 792
 793         return 0;
 794  err:
 795         kfree(bss->bss);
 796         kfree(bss);
 797
 798         return -EINVAL;
 799 }
 800
 801 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
 802                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 803 {
 804         struct iwm_umac_notif_bss_removed *bss_rm =
 805                 (struct iwm_umac_notif_bss_removed *)buf;
 806         struct iwm_bss_info *bss, *next;
 807         u16 table_idx;
 808         int i;
 809
 810         for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
 811                 table_idx = (le16_to_cpu(bss_rm->entries[i])
 812                              & IWM_BSS_REMOVE_INDEX_MSK);
 813                 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 814                         if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
 815                                 struct ieee80211_mgmt *mgmt;
 816
 817                                 mgmt = (struct ieee80211_mgmt *)
 818                                         (bss->bss->frame_buf);
 819                                 IWM_DBG_MLME(iwm, ERR,
 820                                              "BSS removed: %pM\n",
 821                                              mgmt->bssid);
 822                                 list_del(&bss->node);
 823                                 kfree(bss->bss);
 824                                 kfree(bss);
 825                         }
 826         }
 827
 828         return 0;
 829 }
 830
 831 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
 832                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 833 {
 834         struct iwm_umac_notif_mgt_frame *mgt_frame =
 835                         (struct iwm_umac_notif_mgt_frame *)buf;
 836         struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
 837         u8 *ie;
 838
 839         IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
 840                     le16_to_cpu(mgt_frame->len));
 841
 842         if (ieee80211_is_assoc_req(mgt->frame_control)) {
 843                 ie = mgt->u.assoc_req.variable;;
 844                 iwm->req_ie_len =
 845                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 846                 kfree(iwm->req_ie);
 847                 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
 848                                       iwm->req_ie_len, GFP_KERNEL);
 849         } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
 850                 ie = mgt->u.reassoc_req.variable;;
 851                 iwm->req_ie_len =
 852                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 853                 kfree(iwm->req_ie);
 854                 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
 855                                       iwm->req_ie_len, GFP_KERNEL);
 856         } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
 857                 ie = mgt->u.assoc_resp.variable;;
 858                 iwm->resp_ie_len =
 859                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 860                 kfree(iwm->resp_ie);
 861                 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
 862                                        iwm->resp_ie_len, GFP_KERNEL);
 863         } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
 864                 ie = mgt->u.reassoc_resp.variable;;
 865                 iwm->resp_ie_len =
 866                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 867                 kfree(iwm->resp_ie);
 868                 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
 869                                        iwm->resp_ie_len, GFP_KERNEL);
 870         } else {
 871                 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
 872                         le16_to_cpu(mgt->frame_control));
 873                 return 0;
 874         }
 875
 876         return 0;
 877 }
 878
 879 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
 880                         unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 881 {
 882         struct iwm_umac_notif_wifi_if *notif =
 883                 (struct iwm_umac_notif_wifi_if *)buf;
 884
 885         switch (notif->status) {
 886         case WIFI_IF_NTFY_ASSOC_START:
 887                 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
 888         case WIFI_IF_NTFY_ASSOC_COMPLETE:
 889                 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
 890         case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
 891                 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
 892         case WIFI_IF_NTFY_CONNECTION_TERMINATED:
 893                 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
 894         case WIFI_IF_NTFY_SCAN_COMPLETE:
 895                 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
 896         case WIFI_IF_NTFY_STA_TABLE_CHANGE:
 897                 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
 898         case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
 899                 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
 900                 break;
 901         case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
 902                 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
 903         case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
 904                 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
 905                 break;
 906         case WIFI_IF_NTFY_MGMT_FRAME:
 907                 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
 908         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
 909         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
 910         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
 911         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
 912         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
 913         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
 914         case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
 915         case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
 916         case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
 917         case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
 918                 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
 919                              notif->status);
 920                 break;
 921         default:
 922                 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
 923                 break;
 924         }
 925
 926         return 0;
 927 }
 928
 929 #define IWM_STATS_UPDATE_INTERVAL               (2 * HZ)
 930
 931 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
 932                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 933 {
 934         struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
 935         struct iw_statistics *wstats = &iwm->wstats;
 936         u16 max_rate = 0;
 937         int i;
 938
 939         IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
 940
 941         if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
 942                 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
 943                         max_rate = max_t(u16, max_rate,
 944                                          max(le16_to_cpu(stats->tx_rate[i]),
 945                                              le16_to_cpu(stats->rx_rate[i])));
 946                 }
 947                 /* UMAC passes rate info multiplies by 2 */
 948                 iwm->rate = max_rate >> 1;
 949         }
 950         iwm->txpower = le32_to_cpu(stats->tx_power);
 951
 952         wstats->status = 0;
 953
 954         wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
 955         wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
 956         wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
 957         wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
 958
 959         wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
 960
 961         /* according to cfg80211 */
 962         if (stats->rssi_dbm < -110)
 963                 wstats->qual.qual = 0;
 964         else if (stats->rssi_dbm > -40)
 965                 wstats->qual.qual = 70;
 966         else
 967                 wstats->qual.qual = stats->rssi_dbm + 110;
 968
 969         wstats->qual.level = stats->rssi_dbm;
 970         wstats->qual.noise = stats->noise_dbm;
 971         wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
 972
 973         schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
 974
 975         mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
 976
 977         return 0;
 978 }
 979
 980 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
 981                                 unsigned long buf_size,
 982                                 struct iwm_wifi_cmd *cmd)
 983 {
 984         struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
 985                 (struct iwm_umac_cmd_eeprom_proxy *)
 986                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 987         struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
 988         u32 hdr_offset = le32_to_cpu(hdr->offset);
 989         u32 hdr_len = le32_to_cpu(hdr->len);
 990         u32 hdr_type = le32_to_cpu(hdr->type);
 991
 992         IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
 993                     hdr_type, hdr_len, hdr_offset);
 994
 995         if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
 996                 return -EINVAL;
 997
 998         switch (hdr_type) {
 999         case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1000                 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1001                 break;
1002         case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1003         default:
1004                 return -ENOTSUPP;
1005         }
1006
1007         return 0;
1008 }
1009
1010 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1011                                      unsigned long buf_size,
1012                                      struct iwm_wifi_cmd *cmd)
1013 {
1014         struct iwm_umac_cmd_get_channel_list *ch_list =
1015                         (struct iwm_umac_cmd_get_channel_list *)
1016                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1017         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1018         struct ieee80211_supported_band *band;
1019         int i;
1020
1021         band = wiphy->bands[IEEE80211_BAND_2GHZ];
1022
1023         for (i = 0; i < band->n_channels; i++) {
1024                 unsigned long ch_mask_0 =
1025                         le32_to_cpu(ch_list->ch[0].channels_mask);
1026                 unsigned long ch_mask_2 =
1027                         le32_to_cpu(ch_list->ch[2].channels_mask);
1028
1029                 if (!test_bit(i, &ch_mask_0))
1030                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1031
1032                 if (!test_bit(i, &ch_mask_2))
1033                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1034         }
1035
1036         band = wiphy->bands[IEEE80211_BAND_5GHZ];
1037
1038         for (i = 0; i < min(band->n_channels, 32); i++) {
1039                 unsigned long ch_mask_1 =
1040                         le32_to_cpu(ch_list->ch[1].channels_mask);
1041                 unsigned long ch_mask_3 =
1042                         le32_to_cpu(ch_list->ch[3].channels_mask);
1043
1044                 if (!test_bit(i, &ch_mask_1))
1045                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1046
1047                 if (!test_bit(i, &ch_mask_3))
1048                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1049         }
1050
1051         return 0;
1052 }
1053
1054 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1055                                    unsigned long buf_size,
1056                                    struct iwm_wifi_cmd *cmd)
1057 {
1058         struct iwm_umac_wifi_if *hdr =
1059                         (struct iwm_umac_wifi_if *)cmd->buf.payload;
1060
1061         IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1062                     "oid is 0x%x\n", hdr->oid);
1063
1064         if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1065                 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1066                 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1067         } else
1068                 return -EINVAL;
1069
1070         switch (hdr->oid) {
1071         case UMAC_WIFI_IF_CMD_SET_PROFILE:
1072                 iwm->umac_profile_active = 1;
1073                 break;
1074         default:
1075                 break;
1076         }
1077
1078         return 0;
1079 }
1080
1081 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1082                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1083 {
1084         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1085         struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1086                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1087         u32 flags = le32_to_cpu(state->flags);
1088
1089         IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1090                  flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1091                  flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1092
1093         wiphy_rfkill_set_hw_state(wiphy, flags & IWM_CARD_STATE_HW_DISABLED);
1094
1095         return 0;
1096 }
1097
1098 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1099                               unsigned long buf_size)
1100 {
1101         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1102         struct iwm_wifi_cmd *cmd;
1103         u8 source, cmd_id;
1104         u16 seq_num;
1105         u32 count;
1106         u8 resp;
1107
1108         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1109         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1110
1111         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1112         if (source >= IWM_SRC_NUM) {
1113                 IWM_CRIT(iwm, "invalid source %d\n", source);
1114                 return -EINVAL;
1115         }
1116
1117         count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1118         count += sizeof(struct iwm_umac_wifi_in_hdr) -
1119                  sizeof(struct iwm_dev_cmd_hdr);
1120         if (count > buf_size) {
1121                 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1122                 return -EINVAL;
1123         }
1124
1125         resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1126
1127         seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1128
1129         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1130                    cmd_id, source, seq_num);
1131
1132         /*
1133          * If this is a response to a previously sent command, there must
1134          * be a pending command for this sequence number.
1135          */
1136         cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1137
1138         /* Notify the caller only for sync commands. */
1139         switch (source) {
1140         case UMAC_HDI_IN_SOURCE_FHRX:
1141                 if (iwm->lmac_handlers[cmd_id] &&
1142                     test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1143                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1144                                               buf, count);
1145                 break;
1146         case UMAC_HDI_IN_SOURCE_FW:
1147                 if (iwm->umac_handlers[cmd_id] &&
1148                     test_bit(cmd_id, &iwm->umac_handler_map[0]))
1149                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1150                                               buf, count);
1151                 break;
1152         case UMAC_HDI_IN_SOURCE_UDMA:
1153                 break;
1154         }
1155
1156         return iwm_rx_handle_resp(iwm, buf, count, cmd);
1157 }
1158
1159 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1160                        struct iwm_wifi_cmd *cmd)
1161 {
1162         u8 source, cmd_id;
1163         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1164         int ret = 0;
1165
1166         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1167         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1168
1169         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1170
1171         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1172
1173         switch (source) {
1174         case UMAC_HDI_IN_SOURCE_FHRX:
1175                 if (iwm->lmac_handlers[cmd_id])
1176                         ret = iwm->lmac_handlers[cmd_id]
1177                                         (iwm, buf, buf_size, cmd);
1178                 break;
1179         case UMAC_HDI_IN_SOURCE_FW:
1180                 if (iwm->umac_handlers[cmd_id])
1181                         ret = iwm->umac_handlers[cmd_id]
1182                                         (iwm, buf, buf_size, cmd);
1183                 break;
1184         case UMAC_HDI_IN_SOURCE_UDMA:
1185                 ret = -EINVAL;
1186                 break;
1187         }
1188
1189         kfree(cmd);
1190
1191         return ret;
1192 }
1193
1194 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1195                                  unsigned long buf_size)
1196 {
1197         u8 seq_num;
1198         struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1199         struct iwm_nonwifi_cmd *cmd, *next;
1200
1201         seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1202
1203         /*
1204          * We received a non wifi answer.
1205          * Let's check if there's a pending command for it, and if so
1206          * replace the command payload with the buffer, and then wake the
1207          * callers up.
1208          * That means we only support synchronised non wifi command response
1209          * schemes.
1210          */
1211         list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1212                 if (cmd->seq_num == seq_num) {
1213                         cmd->resp_received = 1;
1214                         cmd->buf.len = buf_size;
1215                         memcpy(cmd->buf.hdr, buf, buf_size);
1216                         wake_up_interruptible(&iwm->nonwifi_queue);
1217                 }
1218
1219         return 0;
1220 }
1221
1222 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1223                               unsigned long buf_size)
1224 {
1225         int ret = 0;
1226         u8 op_code;
1227         unsigned long buf_offset = 0;
1228         struct iwm_udma_in_hdr *hdr;
1229
1230         /*
1231          * To allow for a more efficient bus usage, UMAC
1232          * messages are encapsulated into UDMA ones. This
1233          * way we can have several UMAC messages in one bus
1234          * transfer.
1235          * A UDMA frame size is always aligned on 16 bytes,
1236          * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1237          * word. This is how we parse a bus frame into several
1238          * UDMA ones.
1239          */
1240         while (buf_offset < buf_size) {
1241
1242                 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1243
1244                 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1245                         IWM_DBG_RX(iwm, DBG, "End of frame\n");
1246                         break;
1247                 }
1248
1249                 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1250
1251                 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1252
1253                 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1254                         ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1255                                                   buf_size - buf_offset);
1256                 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1257                         if (GET_VAL32(hdr->cmd,
1258                                       UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1259                             UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1260                                 IWM_ERR(iwm, "Incorrect hw signature\n");
1261                                 return -EINVAL;
1262                         }
1263                         ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1264                                                      buf_size - buf_offset);
1265                 } else {
1266                         IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1267                         ret |= -EINVAL;
1268                 }
1269
1270                 buf_offset += iwm_rx_resp_size(hdr);
1271         }
1272
1273         return ret;
1274 }
1275
1276 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1277 {
1278         struct iwm_udma_in_hdr *hdr;
1279
1280         hdr = (struct iwm_udma_in_hdr *)buf;
1281
1282         switch (le32_to_cpu(hdr->cmd)) {
1283         case UMAC_REBOOT_BARKER:
1284                 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1285                                       IWM_SRC_UDMA, buf, buf_size);
1286         case UMAC_ACK_BARKER:
1287                 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1288                                       IWM_SRC_UDMA, NULL, 0);
1289         default:
1290                 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1291                 return iwm_rx_handle_umac(iwm, buf, buf_size);
1292         }
1293
1294         return 0;
1295 }
1296
1297 static const iwm_handler iwm_umac_handlers[] =
1298 {
1299         [UMAC_NOTIFY_OPCODE_ERROR]              = iwm_ntf_error,
1300         [UMAC_NOTIFY_OPCODE_ALIVE]              = iwm_ntf_umac_alive,
1301         [UMAC_NOTIFY_OPCODE_INIT_COMPLETE]      = iwm_ntf_init_complete,
1302         [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS]   = iwm_ntf_wifi_status,
1303         [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER]    = iwm_ntf_mlme,
1304         [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC]       = iwm_ntf_tx_credit_update,
1305         [UMAC_NOTIFY_OPCODE_RX_TICKET]          = iwm_ntf_rx_ticket,
1306         [UMAC_CMD_OPCODE_RESET]                 = iwm_ntf_umac_reset,
1307         [UMAC_NOTIFY_OPCODE_STATS]              = iwm_ntf_statistics,
1308         [UMAC_CMD_OPCODE_EEPROM_PROXY]          = iwm_ntf_eeprom_proxy,
1309         [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST]    = iwm_ntf_channel_info_list,
1310         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1311         [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER]       = iwm_ntf_wifi_if_wrapper,
1312 };
1313
1314 static const iwm_handler iwm_lmac_handlers[] =
1315 {
1316         [REPLY_TX]                              = iwm_ntf_tx,
1317         [REPLY_ALIVE]                           = iwm_ntf_lmac_version,
1318         [CALIBRATION_RES_NOTIFICATION]          = iwm_ntf_calib_res,
1319         [CALIBRATION_COMPLETE_NOTIFICATION]     = iwm_ntf_calib_complete,
1320         [CALIBRATION_CFG_CMD]                   = iwm_ntf_calib_cfg,
1321         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1322         [CARD_STATE_NOTIFICATION]               = iwm_ntf_card_state,
1323 };
1324
1325 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1326 {
1327         iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1328         iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1329 }
1330
1331 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1332 {
1333         struct ieee80211_hdr *hdr;
1334         unsigned int hdr_len;
1335
1336         hdr = (struct ieee80211_hdr *)skb->data;
1337
1338         if (!ieee80211_has_protected(hdr->frame_control))
1339                 return;
1340
1341         hdr_len = ieee80211_hdrlen(hdr->frame_control);
1342         if (hdr_total_len <= hdr_len)
1343                 return;
1344
1345         memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1346         skb_pull(skb, (hdr_total_len - hdr_len));
1347 }
1348
1349 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1350                                  struct iwm_rx_packet *packet,
1351                                  struct iwm_rx_ticket_node *ticket_node)
1352 {
1353         u32 payload_offset = 0, payload_len;
1354         struct iwm_rx_ticket *ticket = ticket_node->ticket;
1355         struct iwm_rx_mpdu_hdr *mpdu_hdr;
1356         struct ieee80211_hdr *hdr;
1357
1358         mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1359         payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1360         /* Padding is 0 or 2 bytes */
1361         payload_len = le16_to_cpu(mpdu_hdr->len) +
1362                 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1363         payload_len -= ticket->tail_len;
1364
1365         IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1366                    "ticket offset:%d ticket tail len:%d\n",
1367                    payload_len, payload_offset, ticket->payload_offset,
1368                    ticket->tail_len);
1369
1370         IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1371
1372         skb_pull(packet->skb, payload_offset);
1373         skb_trim(packet->skb, payload_len);
1374
1375         iwm_remove_iv(packet->skb, ticket->payload_offset);
1376
1377         hdr = (struct ieee80211_hdr *) packet->skb->data;
1378         if (ieee80211_is_data_qos(hdr->frame_control)) {
1379                 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1380                  * to the qos_ctl field in IEEE 802.11 headers. */
1381                 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1382                         packet->skb->data,
1383                         ieee80211_hdrlen(hdr->frame_control) -
1384                         IEEE80211_QOS_CTL_LEN);
1385                 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1386                                 IEEE80211_QOS_CTL_LEN + 2);
1387                 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1388         }
1389
1390         IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1391                     packet->skb->data, packet->skb->len);
1392 }
1393
1394 static void classify8023(struct sk_buff *skb)
1395 {
1396         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1397
1398         if (ieee80211_is_data_qos(hdr->frame_control)) {
1399                 u8 *qc = ieee80211_get_qos_ctl(hdr);
1400                 /* frame has qos control */
1401                 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1402         } else {
1403                 skb->priority = 0;
1404         }
1405 }
1406
1407 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1408                                   struct iwm_rx_packet *packet,
1409                                   struct iwm_rx_ticket_node *ticket_node)
1410 {
1411         int ret;
1412         struct sk_buff *skb = packet->skb;
1413         struct wireless_dev *wdev = iwm_to_wdev(iwm);
1414         struct net_device *ndev = iwm_to_ndev(iwm);
1415
1416         IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1417
1418         switch (le16_to_cpu(ticket_node->ticket->action)) {
1419         case IWM_RX_TICKET_RELEASE:
1420                 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1421                 classify8023(skb);
1422                 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1423                 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1424                 if (ret < 0) {
1425                         IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1426                                    "%d\n", ret);
1427                         break;
1428                 }
1429
1430                 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1431
1432                 skb->dev = iwm_to_ndev(iwm);
1433                 skb->protocol = eth_type_trans(skb, ndev);
1434                 skb->ip_summed = CHECKSUM_NONE;
1435                 memset(skb->cb, 0, sizeof(skb->cb));
1436
1437                 ndev->stats.rx_packets++;
1438                 ndev->stats.rx_bytes += skb->len;
1439
1440                 if (netif_rx_ni(skb) == NET_RX_DROP) {
1441                         IWM_ERR(iwm, "Packet dropped\n");
1442                         ndev->stats.rx_dropped++;
1443                 }
1444                 break;
1445         case IWM_RX_TICKET_DROP:
1446                 IWM_DBG_RX(iwm, DBG, "DROP packet\n");
1447                 kfree_skb(packet->skb);
1448                 break;
1449         default:
1450                 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1451                         le16_to_cpu(ticket_node->ticket->action));
1452                 kfree_skb(packet->skb);
1453         }
1454
1455         kfree(packet);
1456         iwm_rx_ticket_node_free(ticket_node);
1457 }
1458
1459 /*
1460  * Rx data processing:
1461  *
1462  * We're receiving Rx packet from the LMAC, and Rx ticket from
1463  * the UMAC.
1464  * To forward a target data packet upstream (i.e. to the
1465  * kernel network stack), we must have received an Rx ticket
1466  * that tells us we're allowed to release this packet (ticket
1467  * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1468  * among other things, where valid data actually starts in the Rx
1469  * packet.
1470  */
1471 void iwm_rx_worker(struct work_struct *work)
1472 {
1473         struct iwm_priv *iwm;
1474         struct iwm_rx_ticket_node *ticket, *next;
1475
1476         iwm = container_of(work, struct iwm_priv, rx_worker);
1477
1478         /*
1479          * We go through the tickets list and if there is a pending
1480          * packet for it, we push it upstream.
1481          * We stop whenever a ticket is missing its packet, as we're
1482          * supposed to send the packets in order.
1483          */
1484         list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1485                 struct iwm_rx_packet *packet =
1486                         iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1487
1488                 if (!packet) {
1489                         IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1490                                    "to be handled first\n",
1491                                    le16_to_cpu(ticket->ticket->id));
1492                         return;
1493                 }
1494
1495                 list_del(&ticket->node);
1496                 list_del(&packet->node);
1497                 iwm_rx_process_packet(iwm, packet, ticket);
1498         }
1499 }
1500