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 %s(%d)\n",
 426                                    ticket->action ==  IWM_RX_TICKET_RELEASE ?
 427                                    "RELEASE" : "DROP",
 428                                    ticket->id);
 429                         list_add_tail(&ticket_node->node, &iwm->rx_tickets);
 430
 431                         /*
 432                          * We received an Rx ticket, most likely there's
 433                          * a packet pending for it, it's not worth going
 434                          * through the packet hash list to double check.
 435                          * Let's just fire the rx worker..
 436                          */
 437                         schedule_rx = 1;
 438
 439                         break;
 440
 441                 default:
 442                         IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
 443                                 ticket->action);
 444                 }
 445
 446                 ticket++;
 447         }
 448
 449         if (schedule_rx)
 450                 queue_work(iwm->rx_wq, &iwm->rx_worker);
 451
 452         return 0;
 453 }
 454
 455 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
 456                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 457 {
 458         struct iwm_umac_wifi_in_hdr *wifi_hdr;
 459         struct iwm_rx_packet *packet;
 460         u16 id, buf_offset;
 461         u32 packet_size;
 462
 463         IWM_DBG_RX(iwm, DBG, "\n");
 464
 465         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 466         id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
 467         buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
 468         packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
 469
 470         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
 471                    wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
 472         IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
 473         IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
 474
 475         packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
 476         if (IS_ERR(packet))
 477                 return PTR_ERR(packet);
 478
 479         list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
 480
 481         /* We might (unlikely) have received the packet _after_ the ticket */
 482         queue_work(iwm->rx_wq, &iwm->rx_worker);
 483
 484         return 0;
 485 }
 486
 487 /* MLME handlers */
 488 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
 489                                 unsigned long buf_size,
 490                                 struct iwm_wifi_cmd *cmd)
 491 {
 492         struct iwm_umac_notif_assoc_start *start;
 493
 494         start = (struct iwm_umac_notif_assoc_start *)buf;
 495
 496         IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
 497                      start->bssid, le32_to_cpu(start->roam_reason));
 498
 499         wake_up_interruptible(&iwm->mlme_queue);
 500
 501         return 0;
 502 }
 503
 504 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
 505                                    unsigned long buf_size,
 506                                    struct iwm_wifi_cmd *cmd)
 507 {
 508         struct iwm_umac_notif_assoc_complete *complete =
 509                 (struct iwm_umac_notif_assoc_complete *)buf;
 510
 511         IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
 512                      complete->bssid, complete->status);
 513
 514         switch (le32_to_cpu(complete->status)) {
 515         case UMAC_ASSOC_COMPLETE_SUCCESS:
 516                 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 517                 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
 518                 iwm->channel = complete->channel;
 519
 520                 /* Internal roaming state, avoid notifying SME. */
 521                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 522                     && iwm->conf.mode == UMAC_MODE_BSS) {
 523                         cancel_delayed_work(&iwm->disconnect);
 524                         cfg80211_roamed(iwm_to_ndev(iwm),
 525                                         complete->bssid,
 526                                         iwm->req_ie, iwm->req_ie_len,
 527                                         iwm->resp_ie, iwm->resp_ie_len,
 528                                         GFP_KERNEL);
 529                         break;
 530                 }
 531
 532                 iwm_link_on(iwm);
 533
 534                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 535                         goto ibss;
 536
 537                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 538                         cfg80211_connect_result(iwm_to_ndev(iwm),
 539                                                 complete->bssid,
 540                                                 iwm->req_ie, iwm->req_ie_len,
 541                                                 iwm->resp_ie, iwm->resp_ie_len,
 542                                                 WLAN_STATUS_SUCCESS,
 543                                                 GFP_KERNEL);
 544                 else
 545                         cfg80211_roamed(iwm_to_ndev(iwm),
 546                                         complete->bssid,
 547                                         iwm->req_ie, iwm->req_ie_len,
 548                                         iwm->resp_ie, iwm->resp_ie_len,
 549                                         GFP_KERNEL);
 550                 break;
 551         case UMAC_ASSOC_COMPLETE_FAILURE:
 552                 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 553                 memset(iwm->bssid, 0, ETH_ALEN);
 554                 iwm->channel = 0;
 555
 556                 /* Internal roaming state, avoid notifying SME. */
 557                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 558                     && iwm->conf.mode == UMAC_MODE_BSS) {
 559                         cancel_delayed_work(&iwm->disconnect);
 560                         break;
 561                 }
 562
 563                 iwm_link_off(iwm);
 564
 565                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 566                         goto ibss;
 567
 568                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 569                         cfg80211_connect_result(iwm_to_ndev(iwm),
 570                                                 complete->bssid,
 571                                                 NULL, 0, NULL, 0,
 572                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
 573                                                 GFP_KERNEL);
 574                 else
 575                         cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
 576                                               GFP_KERNEL);
 577                 break;
 578         default:
 579                 break;
 580         }
 581
 582         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 583         return 0;
 584
 585  ibss:
 586         cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
 587         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 588         return 0;
 589 }
 590
 591 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
 592                                        unsigned long buf_size,
 593                                        struct iwm_wifi_cmd *cmd)
 594 {
 595         struct iwm_umac_notif_profile_invalidate *invalid;
 596         u32 reason;
 597
 598         invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
 599         reason = le32_to_cpu(invalid->reason);
 600
 601         IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
 602
 603         if (reason != UMAC_PROFILE_INVALID_REQUEST &&
 604             test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
 605                 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
 606                                         0, WLAN_STATUS_UNSPECIFIED_FAILURE,
 607                                         GFP_KERNEL);
 608
 609         clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
 610         clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 611
 612         iwm->umac_profile_active = 0;
 613         memset(iwm->bssid, 0, ETH_ALEN);
 614         iwm->channel = 0;
 615
 616         iwm_link_off(iwm);
 617
 618         wake_up_interruptible(&iwm->mlme_queue);
 619
 620         return 0;
 621 }
 622
 623 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
 624
 625 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
 626                                           unsigned long buf_size,
 627                                           struct iwm_wifi_cmd *cmd)
 628 {
 629         IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
 630
 631         schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
 632
 633         return 0;
 634 }
 635
 636 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
 637                                   unsigned long buf_size,
 638                                   struct iwm_wifi_cmd *cmd)
 639 {
 640         int ret;
 641         struct iwm_umac_notif_scan_complete *scan_complete =
 642                 (struct iwm_umac_notif_scan_complete *)buf;
 643         u32 result = le32_to_cpu(scan_complete->result);
 644
 645         IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
 646                      le32_to_cpu(scan_complete->type),
 647                      le32_to_cpu(scan_complete->result),
 648                      scan_complete->seq_num);
 649
 650         if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
 651                 IWM_ERR(iwm, "Scan complete while device not scanning\n");
 652                 return -EIO;
 653         }
 654         if (!iwm->scan_request)
 655                 return 0;
 656
 657         ret = iwm_cfg80211_inform_bss(iwm);
 658
 659         cfg80211_scan_done(iwm->scan_request,
 660                            (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
 661         iwm->scan_request = NULL;
 662
 663         return ret;
 664 }
 665
 666 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
 667                                      unsigned long buf_size,
 668                                      struct iwm_wifi_cmd *cmd)
 669 {
 670         struct iwm_umac_notif_sta_info *umac_sta =
 671                         (struct iwm_umac_notif_sta_info *)buf;
 672         struct iwm_sta_info *sta;
 673         int i;
 674
 675         switch (le32_to_cpu(umac_sta->opcode)) {
 676         case UMAC_OPCODE_ADD_MODIFY:
 677                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 678
 679                 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
 680                              "addr = %pM, qos = %d\n",
 681                              sta->valid ? "Modify" : "Add",
 682                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 683                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 684                              umac_sta->mac_addr,
 685                              umac_sta->flags & UMAC_STA_FLAG_QOS);
 686
 687                 sta->valid = 1;
 688                 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
 689                 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
 690                 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
 691                 break;
 692         case UMAC_OPCODE_REMOVE:
 693                 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
 694                              "addr = %pM\n",
 695                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 696                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 697                              umac_sta->mac_addr);
 698
 699                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 700
 701                 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
 702                         sta->valid = 0;
 703
 704                 break;
 705         case UMAC_OPCODE_CLEAR_ALL:
 706                 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
 707                         iwm->sta_table[i].valid = 0;
 708
 709                 break;
 710         default:
 711                 break;
 712         }
 713
 714         return 0;
 715 }
 716
 717 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
 718                                      unsigned long buf_size,
 719                                      struct iwm_wifi_cmd *cmd)
 720 {
 721         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 722         struct ieee80211_mgmt *mgmt;
 723         struct iwm_umac_notif_bss_info *umac_bss =
 724                         (struct iwm_umac_notif_bss_info *)buf;
 725         struct ieee80211_channel *channel;
 726         struct ieee80211_supported_band *band;
 727         struct iwm_bss_info *bss, *next;
 728         s32 signal;
 729         int freq;
 730         u16 frame_len = le16_to_cpu(umac_bss->frame_len);
 731         size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
 732
 733         mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
 734
 735         IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
 736         IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
 737         IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
 738                      le32_to_cpu(umac_bss->timestamp));
 739         IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
 740                      le16_to_cpu(umac_bss->table_idx));
 741         IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
 742         IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
 743         IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
 744         IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
 745
 746         list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 747                 if (bss->bss->table_idx == umac_bss->table_idx)
 748                         break;
 749
 750         if (&bss->node != &iwm->bss_list) {
 751                 /* Remove the old BSS entry, we will add it back later. */
 752                 list_del(&bss->node);
 753                 kfree(bss->bss);
 754         } else {
 755                 /* New BSS entry */
 756
 757                 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
 758                 if (!bss) {
 759                         IWM_ERR(iwm, "Couldn't allocate bss_info\n");
 760                         return -ENOMEM;
 761                 }
 762         }
 763
 764         bss->bss = kzalloc(bss_len, GFP_KERNEL);
 765         if (!bss) {
 766                 kfree(bss);
 767                 IWM_ERR(iwm, "Couldn't allocate bss\n");
 768                 return -ENOMEM;
 769         }
 770
 771         INIT_LIST_HEAD(&bss->node);
 772         memcpy(bss->bss, umac_bss, bss_len);
 773
 774         if (umac_bss->band == UMAC_BAND_2GHZ)
 775                 band = wiphy->bands[IEEE80211_BAND_2GHZ];
 776         else if (umac_bss->band == UMAC_BAND_5GHZ)
 777                 band = wiphy->bands[IEEE80211_BAND_5GHZ];
 778         else {
 779                 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
 780                 goto err;
 781         }
 782
 783         freq = ieee80211_channel_to_frequency(umac_bss->channel);
 784         channel = ieee80211_get_channel(wiphy, freq);
 785         signal = umac_bss->rssi * 100;
 786
 787         bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
 788                                                  mgmt, frame_len,
 789                                                  signal, GFP_KERNEL);
 790         if (!bss->cfg_bss)
 791                 goto err;
 792
 793         list_add_tail(&bss->node, &iwm->bss_list);
 794
 795         return 0;
 796  err:
 797         kfree(bss->bss);
 798         kfree(bss);
 799
 800         return -EINVAL;
 801 }
 802
 803 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
 804                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 805 {
 806         struct iwm_umac_notif_bss_removed *bss_rm =
 807                 (struct iwm_umac_notif_bss_removed *)buf;
 808         struct iwm_bss_info *bss, *next;
 809         u16 table_idx;
 810         int i;
 811
 812         for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
 813                 table_idx = (le16_to_cpu(bss_rm->entries[i])
 814                              & IWM_BSS_REMOVE_INDEX_MSK);
 815                 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 816                         if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
 817                                 struct ieee80211_mgmt *mgmt;
 818
 819                                 mgmt = (struct ieee80211_mgmt *)
 820                                         (bss->bss->frame_buf);
 821                                 IWM_DBG_MLME(iwm, ERR,
 822                                              "BSS removed: %pM\n",
 823                                              mgmt->bssid);
 824                                 list_del(&bss->node);
 825                                 kfree(bss->bss);
 826                                 kfree(bss);
 827                         }
 828         }
 829
 830         return 0;
 831 }
 832
 833 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
 834                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 835 {
 836         struct iwm_umac_notif_mgt_frame *mgt_frame =
 837                         (struct iwm_umac_notif_mgt_frame *)buf;
 838         struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
 839         u8 *ie;
 840
 841         IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
 842                     le16_to_cpu(mgt_frame->len));
 843
 844         if (ieee80211_is_assoc_req(mgt->frame_control)) {
 845                 ie = mgt->u.assoc_req.variable;;
 846                 iwm->req_ie_len =
 847                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 848                 kfree(iwm->req_ie);
 849                 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
 850                                       iwm->req_ie_len, GFP_KERNEL);
 851         } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
 852                 ie = mgt->u.reassoc_req.variable;;
 853                 iwm->req_ie_len =
 854                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 855                 kfree(iwm->req_ie);
 856                 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
 857                                       iwm->req_ie_len, GFP_KERNEL);
 858         } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
 859                 ie = mgt->u.assoc_resp.variable;;
 860                 iwm->resp_ie_len =
 861                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 862                 kfree(iwm->resp_ie);
 863                 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
 864                                        iwm->resp_ie_len, GFP_KERNEL);
 865         } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
 866                 ie = mgt->u.reassoc_resp.variable;;
 867                 iwm->resp_ie_len =
 868                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 869                 kfree(iwm->resp_ie);
 870                 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
 871                                        iwm->resp_ie_len, GFP_KERNEL);
 872         } else {
 873                 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
 874                         le16_to_cpu(mgt->frame_control));
 875                 return 0;
 876         }
 877
 878         return 0;
 879 }
 880
 881 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
 882                         unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 883 {
 884         struct iwm_umac_notif_wifi_if *notif =
 885                 (struct iwm_umac_notif_wifi_if *)buf;
 886
 887         switch (notif->status) {
 888         case WIFI_IF_NTFY_ASSOC_START:
 889                 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
 890         case WIFI_IF_NTFY_ASSOC_COMPLETE:
 891                 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
 892         case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
 893                 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
 894         case WIFI_IF_NTFY_CONNECTION_TERMINATED:
 895                 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
 896         case WIFI_IF_NTFY_SCAN_COMPLETE:
 897                 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
 898         case WIFI_IF_NTFY_STA_TABLE_CHANGE:
 899                 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
 900         case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
 901                 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
 902                 break;
 903         case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
 904                 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
 905         case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
 906                 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
 907                 break;
 908         case WIFI_IF_NTFY_MGMT_FRAME:
 909                 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
 910         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
 911         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
 912         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
 913         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
 914         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
 915         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
 916         case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
 917         case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
 918         case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
 919         case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
 920                 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
 921                              notif->status);
 922                 break;
 923         default:
 924                 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
 925                 break;
 926         }
 927
 928         return 0;
 929 }
 930
 931 #define IWM_STATS_UPDATE_INTERVAL               (2 * HZ)
 932
 933 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
 934                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 935 {
 936         struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
 937         struct iw_statistics *wstats = &iwm->wstats;
 938         u16 max_rate = 0;
 939         int i;
 940
 941         IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
 942
 943         if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
 944                 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
 945                         max_rate = max_t(u16, max_rate,
 946                                          max(le16_to_cpu(stats->tx_rate[i]),
 947                                              le16_to_cpu(stats->rx_rate[i])));
 948                 }
 949                 /* UMAC passes rate info multiplies by 2 */
 950                 iwm->rate = max_rate >> 1;
 951         }
 952         iwm->txpower = le32_to_cpu(stats->tx_power);
 953
 954         wstats->status = 0;
 955
 956         wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
 957         wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
 958         wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
 959         wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
 960
 961         wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
 962
 963         /* according to cfg80211 */
 964         if (stats->rssi_dbm < -110)
 965                 wstats->qual.qual = 0;
 966         else if (stats->rssi_dbm > -40)
 967                 wstats->qual.qual = 70;
 968         else
 969                 wstats->qual.qual = stats->rssi_dbm + 110;
 970
 971         wstats->qual.level = stats->rssi_dbm;
 972         wstats->qual.noise = stats->noise_dbm;
 973         wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
 974
 975         schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
 976
 977         mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
 978
 979         return 0;
 980 }
 981
 982 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
 983                                 unsigned long buf_size,
 984                                 struct iwm_wifi_cmd *cmd)
 985 {
 986         struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
 987                 (struct iwm_umac_cmd_eeprom_proxy *)
 988                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 989         struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
 990         u32 hdr_offset = le32_to_cpu(hdr->offset);
 991         u32 hdr_len = le32_to_cpu(hdr->len);
 992         u32 hdr_type = le32_to_cpu(hdr->type);
 993
 994         IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
 995                     hdr_type, hdr_len, hdr_offset);
 996
 997         if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
 998                 return -EINVAL;
 999
1000         switch (hdr_type) {
1001         case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1002                 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1003                 break;
1004         case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1005         default:
1006                 return -ENOTSUPP;
1007         }
1008
1009         return 0;
1010 }
1011
1012 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1013                                      unsigned long buf_size,
1014                                      struct iwm_wifi_cmd *cmd)
1015 {
1016         struct iwm_umac_cmd_get_channel_list *ch_list =
1017                         (struct iwm_umac_cmd_get_channel_list *)
1018                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1019         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1020         struct ieee80211_supported_band *band;
1021         int i;
1022
1023         band = wiphy->bands[IEEE80211_BAND_2GHZ];
1024
1025         for (i = 0; i < band->n_channels; i++) {
1026                 unsigned long ch_mask_0 =
1027                         le32_to_cpu(ch_list->ch[0].channels_mask);
1028                 unsigned long ch_mask_2 =
1029                         le32_to_cpu(ch_list->ch[2].channels_mask);
1030
1031                 if (!test_bit(i, &ch_mask_0))
1032                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1033
1034                 if (!test_bit(i, &ch_mask_2))
1035                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1036         }
1037
1038         band = wiphy->bands[IEEE80211_BAND_5GHZ];
1039
1040         for (i = 0; i < min(band->n_channels, 32); i++) {
1041                 unsigned long ch_mask_1 =
1042                         le32_to_cpu(ch_list->ch[1].channels_mask);
1043                 unsigned long ch_mask_3 =
1044                         le32_to_cpu(ch_list->ch[3].channels_mask);
1045
1046                 if (!test_bit(i, &ch_mask_1))
1047                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1048
1049                 if (!test_bit(i, &ch_mask_3))
1050                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1051         }
1052
1053         return 0;
1054 }
1055
1056 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1057                                    unsigned long buf_size,
1058                                    struct iwm_wifi_cmd *cmd)
1059 {
1060         struct iwm_umac_wifi_if *hdr =
1061                         (struct iwm_umac_wifi_if *)cmd->buf.payload;
1062
1063         IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1064                     "oid is 0x%x\n", hdr->oid);
1065
1066         if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1067                 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1068                 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1069         } else
1070                 return -EINVAL;
1071
1072         switch (hdr->oid) {
1073         case UMAC_WIFI_IF_CMD_SET_PROFILE:
1074                 iwm->umac_profile_active = 1;
1075                 break;
1076         default:
1077                 break;
1078         }
1079
1080         return 0;
1081 }
1082
1083 #define CT_KILL_DELAY (30 * HZ)
1084 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1085                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1086 {
1087         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1088         struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1089                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1090         u32 flags = le32_to_cpu(state->flags);
1091
1092         IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1093                  flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1094                  flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1095
1096         if (flags & IWM_CARD_STATE_CTKILL_DISABLED) {
1097                 /*
1098                  * We got a CTKILL event: We bring the interface down in
1099                  * oder to cool the device down, and try to bring it up
1100                  * 30 seconds later. If it's still too hot, we'll go through
1101                  * this code path again.
1102                  */
1103                 cancel_delayed_work_sync(&iwm->ct_kill_delay);
1104                 schedule_delayed_work(&iwm->ct_kill_delay, CT_KILL_DELAY);
1105         }
1106
1107         wiphy_rfkill_set_hw_state(wiphy, flags &
1108                                   (IWM_CARD_STATE_HW_DISABLED |
1109                                    IWM_CARD_STATE_CTKILL_DISABLED));
1110
1111         return 0;
1112 }
1113
1114 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1115                               unsigned long buf_size)
1116 {
1117         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1118         struct iwm_wifi_cmd *cmd;
1119         u8 source, cmd_id;
1120         u16 seq_num;
1121         u32 count;
1122         u8 resp;
1123
1124         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1125         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1126
1127         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1128         if (source >= IWM_SRC_NUM) {
1129                 IWM_CRIT(iwm, "invalid source %d\n", source);
1130                 return -EINVAL;
1131         }
1132
1133         count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1134         count += sizeof(struct iwm_umac_wifi_in_hdr) -
1135                  sizeof(struct iwm_dev_cmd_hdr);
1136         if (count > buf_size) {
1137                 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1138                 return -EINVAL;
1139         }
1140
1141         resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1142
1143         seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1144
1145         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1146                    cmd_id, source, seq_num);
1147
1148         /*
1149          * If this is a response to a previously sent command, there must
1150          * be a pending command for this sequence number.
1151          */
1152         cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1153
1154         /* Notify the caller only for sync commands. */
1155         switch (source) {
1156         case UMAC_HDI_IN_SOURCE_FHRX:
1157                 if (iwm->lmac_handlers[cmd_id] &&
1158                     test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1159                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1160                                               buf, count);
1161                 break;
1162         case UMAC_HDI_IN_SOURCE_FW:
1163                 if (iwm->umac_handlers[cmd_id] &&
1164                     test_bit(cmd_id, &iwm->umac_handler_map[0]))
1165                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1166                                               buf, count);
1167                 break;
1168         case UMAC_HDI_IN_SOURCE_UDMA:
1169                 break;
1170         }
1171
1172         return iwm_rx_handle_resp(iwm, buf, count, cmd);
1173 }
1174
1175 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1176                        struct iwm_wifi_cmd *cmd)
1177 {
1178         u8 source, cmd_id;
1179         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1180         int ret = 0;
1181
1182         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1183         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1184
1185         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1186
1187         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1188
1189         switch (source) {
1190         case UMAC_HDI_IN_SOURCE_FHRX:
1191                 if (iwm->lmac_handlers[cmd_id])
1192                         ret = iwm->lmac_handlers[cmd_id]
1193                                         (iwm, buf, buf_size, cmd);
1194                 break;
1195         case UMAC_HDI_IN_SOURCE_FW:
1196                 if (iwm->umac_handlers[cmd_id])
1197                         ret = iwm->umac_handlers[cmd_id]
1198                                         (iwm, buf, buf_size, cmd);
1199                 break;
1200         case UMAC_HDI_IN_SOURCE_UDMA:
1201                 ret = -EINVAL;
1202                 break;
1203         }
1204
1205         kfree(cmd);
1206
1207         return ret;
1208 }
1209
1210 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1211                                  unsigned long buf_size)
1212 {
1213         u8 seq_num;
1214         struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1215         struct iwm_nonwifi_cmd *cmd, *next;
1216
1217         seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1218
1219         /*
1220          * We received a non wifi answer.
1221          * Let's check if there's a pending command for it, and if so
1222          * replace the command payload with the buffer, and then wake the
1223          * callers up.
1224          * That means we only support synchronised non wifi command response
1225          * schemes.
1226          */
1227         list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1228                 if (cmd->seq_num == seq_num) {
1229                         cmd->resp_received = 1;
1230                         cmd->buf.len = buf_size;
1231                         memcpy(cmd->buf.hdr, buf, buf_size);
1232                         wake_up_interruptible(&iwm->nonwifi_queue);
1233                 }
1234
1235         return 0;
1236 }
1237
1238 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1239                               unsigned long buf_size)
1240 {
1241         int ret = 0;
1242         u8 op_code;
1243         unsigned long buf_offset = 0;
1244         struct iwm_udma_in_hdr *hdr;
1245
1246         /*
1247          * To allow for a more efficient bus usage, UMAC
1248          * messages are encapsulated into UDMA ones. This
1249          * way we can have several UMAC messages in one bus
1250          * transfer.
1251          * A UDMA frame size is always aligned on 16 bytes,
1252          * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1253          * word. This is how we parse a bus frame into several
1254          * UDMA ones.
1255          */
1256         while (buf_offset < buf_size) {
1257
1258                 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1259
1260                 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1261                         IWM_DBG_RX(iwm, DBG, "End of frame\n");
1262                         break;
1263                 }
1264
1265                 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1266
1267                 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1268
1269                 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1270                         ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1271                                                   buf_size - buf_offset);
1272                 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1273                         if (GET_VAL32(hdr->cmd,
1274                                       UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1275                             UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1276                                 IWM_ERR(iwm, "Incorrect hw signature\n");
1277                                 return -EINVAL;
1278                         }
1279                         ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1280                                                      buf_size - buf_offset);
1281                 } else {
1282                         IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1283                         ret |= -EINVAL;
1284                 }
1285
1286                 buf_offset += iwm_rx_resp_size(hdr);
1287         }
1288
1289         return ret;
1290 }
1291
1292 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1293 {
1294         struct iwm_udma_in_hdr *hdr;
1295
1296         hdr = (struct iwm_udma_in_hdr *)buf;
1297
1298         switch (le32_to_cpu(hdr->cmd)) {
1299         case UMAC_REBOOT_BARKER:
1300                 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1301                                       IWM_SRC_UDMA, buf, buf_size);
1302         case UMAC_ACK_BARKER:
1303                 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1304                                       IWM_SRC_UDMA, NULL, 0);
1305         default:
1306                 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1307                 return iwm_rx_handle_umac(iwm, buf, buf_size);
1308         }
1309
1310         return 0;
1311 }
1312
1313 static const iwm_handler iwm_umac_handlers[] =
1314 {
1315         [UMAC_NOTIFY_OPCODE_ERROR]              = iwm_ntf_error,
1316         [UMAC_NOTIFY_OPCODE_ALIVE]              = iwm_ntf_umac_alive,
1317         [UMAC_NOTIFY_OPCODE_INIT_COMPLETE]      = iwm_ntf_init_complete,
1318         [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS]   = iwm_ntf_wifi_status,
1319         [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER]    = iwm_ntf_mlme,
1320         [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC]       = iwm_ntf_tx_credit_update,
1321         [UMAC_NOTIFY_OPCODE_RX_TICKET]          = iwm_ntf_rx_ticket,
1322         [UMAC_CMD_OPCODE_RESET]                 = iwm_ntf_umac_reset,
1323         [UMAC_NOTIFY_OPCODE_STATS]              = iwm_ntf_statistics,
1324         [UMAC_CMD_OPCODE_EEPROM_PROXY]          = iwm_ntf_eeprom_proxy,
1325         [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST]    = iwm_ntf_channel_info_list,
1326         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1327         [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER]       = iwm_ntf_wifi_if_wrapper,
1328 };
1329
1330 static const iwm_handler iwm_lmac_handlers[] =
1331 {
1332         [REPLY_TX]                              = iwm_ntf_tx,
1333         [REPLY_ALIVE]                           = iwm_ntf_lmac_version,
1334         [CALIBRATION_RES_NOTIFICATION]          = iwm_ntf_calib_res,
1335         [CALIBRATION_COMPLETE_NOTIFICATION]     = iwm_ntf_calib_complete,
1336         [CALIBRATION_CFG_CMD]                   = iwm_ntf_calib_cfg,
1337         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1338         [CARD_STATE_NOTIFICATION]               = iwm_ntf_card_state,
1339 };
1340
1341 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1342 {
1343         iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1344         iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1345 }
1346
1347 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1348 {
1349         struct ieee80211_hdr *hdr;
1350         unsigned int hdr_len;
1351
1352         hdr = (struct ieee80211_hdr *)skb->data;
1353
1354         if (!ieee80211_has_protected(hdr->frame_control))
1355                 return;
1356
1357         hdr_len = ieee80211_hdrlen(hdr->frame_control);
1358         if (hdr_total_len <= hdr_len)
1359                 return;
1360
1361         memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1362         skb_pull(skb, (hdr_total_len - hdr_len));
1363 }
1364
1365 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1366                                  struct iwm_rx_packet *packet,
1367                                  struct iwm_rx_ticket_node *ticket_node)
1368 {
1369         u32 payload_offset = 0, payload_len;
1370         struct iwm_rx_ticket *ticket = ticket_node->ticket;
1371         struct iwm_rx_mpdu_hdr *mpdu_hdr;
1372         struct ieee80211_hdr *hdr;
1373
1374         mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1375         payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1376         /* Padding is 0 or 2 bytes */
1377         payload_len = le16_to_cpu(mpdu_hdr->len) +
1378                 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1379         payload_len -= ticket->tail_len;
1380
1381         IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1382                    "ticket offset:%d ticket tail len:%d\n",
1383                    payload_len, payload_offset, ticket->payload_offset,
1384                    ticket->tail_len);
1385
1386         IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1387
1388         skb_pull(packet->skb, payload_offset);
1389         skb_trim(packet->skb, payload_len);
1390
1391         iwm_remove_iv(packet->skb, ticket->payload_offset);
1392
1393         hdr = (struct ieee80211_hdr *) packet->skb->data;
1394         if (ieee80211_is_data_qos(hdr->frame_control)) {
1395                 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1396                  * to the qos_ctl field in IEEE 802.11 headers. */
1397                 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1398                         packet->skb->data,
1399                         ieee80211_hdrlen(hdr->frame_control) -
1400                         IEEE80211_QOS_CTL_LEN);
1401                 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1402                                 IEEE80211_QOS_CTL_LEN + 2);
1403                 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1404         }
1405
1406         IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1407                     packet->skb->data, packet->skb->len);
1408 }
1409
1410 static void classify8023(struct sk_buff *skb)
1411 {
1412         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1413
1414         if (ieee80211_is_data_qos(hdr->frame_control)) {
1415                 u8 *qc = ieee80211_get_qos_ctl(hdr);
1416                 /* frame has qos control */
1417                 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1418         } else {
1419                 skb->priority = 0;
1420         }
1421 }
1422
1423 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1424                                   struct iwm_rx_packet *packet,
1425                                   struct iwm_rx_ticket_node *ticket_node)
1426 {
1427         int ret;
1428         struct sk_buff *skb = packet->skb;
1429         struct wireless_dev *wdev = iwm_to_wdev(iwm);
1430         struct net_device *ndev = iwm_to_ndev(iwm);
1431
1432         IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1433
1434         switch (le16_to_cpu(ticket_node->ticket->action)) {
1435         case IWM_RX_TICKET_RELEASE:
1436                 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1437                 classify8023(skb);
1438                 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1439                 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1440                 if (ret < 0) {
1441                         IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1442                                    "%d\n", ret);
1443                         break;
1444                 }
1445
1446                 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1447
1448                 skb->dev = iwm_to_ndev(iwm);
1449                 skb->protocol = eth_type_trans(skb, ndev);
1450                 skb->ip_summed = CHECKSUM_NONE;
1451                 memset(skb->cb, 0, sizeof(skb->cb));
1452
1453                 ndev->stats.rx_packets++;
1454                 ndev->stats.rx_bytes += skb->len;
1455
1456                 if (netif_rx_ni(skb) == NET_RX_DROP) {
1457                         IWM_ERR(iwm, "Packet dropped\n");
1458                         ndev->stats.rx_dropped++;
1459                 }
1460                 break;
1461         case IWM_RX_TICKET_DROP:
1462                 IWM_DBG_RX(iwm, DBG, "DROP packet: 0x%x\n",
1463                            le16_to_cpu(ticket_node->ticket->flags));
1464                 kfree_skb(packet->skb);
1465                 break;
1466         default:
1467                 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1468                         le16_to_cpu(ticket_node->ticket->action));
1469                 kfree_skb(packet->skb);
1470         }
1471
1472         kfree(packet);
1473         iwm_rx_ticket_node_free(ticket_node);
1474 }
1475
1476 /*
1477  * Rx data processing:
1478  *
1479  * We're receiving Rx packet from the LMAC, and Rx ticket from
1480  * the UMAC.
1481  * To forward a target data packet upstream (i.e. to the
1482  * kernel network stack), we must have received an Rx ticket
1483  * that tells us we're allowed to release this packet (ticket
1484  * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1485  * among other things, where valid data actually starts in the Rx
1486  * packet.
1487  */
1488 void iwm_rx_worker(struct work_struct *work)
1489 {
1490         struct iwm_priv *iwm;
1491         struct iwm_rx_ticket_node *ticket, *next;
1492
1493         iwm = container_of(work, struct iwm_priv, rx_worker);
1494
1495         /*
1496          * We go through the tickets list and if there is a pending
1497          * packet for it, we push it upstream.
1498          * We stop whenever a ticket is missing its packet, as we're
1499          * supposed to send the packets in order.
1500          */
1501         list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1502                 struct iwm_rx_packet *packet =
1503                         iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1504
1505                 if (!packet) {
1506                         IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1507                                    "to be handled first\n",
1508                                    le16_to_cpu(ticket->ticket->id));
1509                         return;
1510                 }
1511
1512                 list_del(&ticket->node);
1513                 list_del(&packet->node);
1514                 iwm_rx_process_packet(iwm, packet, ticket);
1515         }
1516 }
1517