SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/sched.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/wireless.h>
  44 #include <linux/ieee80211.h>
  45 #include <linux/if_arp.h>
  46 #include <linux/list.h>
  47 #include <net/iw_handler.h>
  48
  49 #include "iwm.h"
  50 #include "debug.h"
  51 #include "hal.h"
  52 #include "umac.h"
  53 #include "lmac.h"
  54 #include "commands.h"
  55 #include "rx.h"
  56 #include "cfg80211.h"
  57 #include "eeprom.h"
  58
  59 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
  60 {
  61         if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
  62             (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
  63                 return -EINVAL;
  64
  65         return 0;
  66 }
  67
  68 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
  69 {
  70         return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
  71                      16);
  72 }
  73
  74 /*
  75  * Notification handlers:
  76  *
  77  * For every possible notification we can receive from the
  78  * target, we have a handler.
  79  * When we get a target notification, and there is no one
  80  * waiting for it, it's just processed through the rx code
  81  * path:
  82  *
  83  * iwm_rx_handle()
  84  *  -> iwm_rx_handle_umac()
  85  *      -> iwm_rx_handle_wifi()
  86  *          -> iwm_rx_handle_resp()
  87  *              -> iwm_ntf_*()
  88  *
  89  *      OR
  90  *
  91  *      -> iwm_rx_handle_non_wifi()
  92  *
  93  * If there are processes waiting for this notification, then
  94  * iwm_rx_handle_wifi() just wakes those processes up and they
  95  * grab the pending notification.
  96  */
  97 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
  98                          unsigned long buf_size, struct iwm_wifi_cmd *cmd)
  99 {
 100         struct iwm_umac_notif_error *error;
 101         struct iwm_fw_error_hdr *fw_err;
 102
 103         error = (struct iwm_umac_notif_error *)buf;
 104         fw_err = &error->err;
 105
 106         memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
 107
 108         IWM_ERR(iwm, "%cMAC FW ERROR:\n",
 109          (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
 110         IWM_ERR(iwm, "\tCategory:    %d\n", le32_to_cpu(fw_err->category));
 111         IWM_ERR(iwm, "\tStatus:      0x%x\n", le32_to_cpu(fw_err->status));
 112         IWM_ERR(iwm, "\tPC:          0x%x\n", le32_to_cpu(fw_err->pc));
 113         IWM_ERR(iwm, "\tblink1:      %d\n", le32_to_cpu(fw_err->blink1));
 114         IWM_ERR(iwm, "\tblink2:      %d\n", le32_to_cpu(fw_err->blink2));
 115         IWM_ERR(iwm, "\tilink1:      %d\n", le32_to_cpu(fw_err->ilink1));
 116         IWM_ERR(iwm, "\tilink2:      %d\n", le32_to_cpu(fw_err->ilink2));
 117         IWM_ERR(iwm, "\tData1:       0x%x\n", le32_to_cpu(fw_err->data1));
 118         IWM_ERR(iwm, "\tData2:       0x%x\n", le32_to_cpu(fw_err->data2));
 119         IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
 120         IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
 121         IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
 122         IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
 123
 124         iwm_resetting(iwm);
 125
 126         return 0;
 127 }
 128
 129 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
 130                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 131 {
 132         struct iwm_umac_notif_alive *alive_resp =
 133                         (struct iwm_umac_notif_alive *)(buf);
 134         u16 status = le16_to_cpu(alive_resp->status);
 135
 136         if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
 137                 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
 138                 return -EIO;
 139         }
 140
 141         iwm_tx_credit_init_pools(iwm, alive_resp);
 142
 143         return 0;
 144 }
 145
 146 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
 147                                  unsigned long buf_size,
 148                                  struct iwm_wifi_cmd *cmd)
 149 {
 150         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 151         struct iwm_umac_notif_init_complete *init_complete =
 152                         (struct iwm_umac_notif_init_complete *)(buf);
 153         u16 status = le16_to_cpu(init_complete->status);
 154         bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
 155
 156         if (blocked)
 157                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
 158         else
 159                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
 160
 161         wiphy_rfkill_set_hw_state(wiphy, blocked);
 162
 163         return 0;
 164 }
 165
 166 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
 167                                     unsigned long buf_size,
 168                                     struct iwm_wifi_cmd *cmd)
 169 {
 170         int pool_nr, total_freed_pages;
 171         unsigned long pool_map;
 172         int i, id;
 173         struct iwm_umac_notif_page_dealloc *dealloc =
 174                         (struct iwm_umac_notif_page_dealloc *)buf;
 175
 176         pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
 177         pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
 178
 179         IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
 180                    "update map 0x%lx\n", pool_nr, pool_map);
 181
 182         spin_lock(&iwm->tx_credit.lock);
 183
 184         for (i = 0; i < pool_nr; i++) {
 185                 id = GET_VAL32(dealloc->grp_info[i],
 186                                UMAC_DEALLOC_NTFY_GROUP_NUM);
 187                 if (test_bit(id, &pool_map)) {
 188                         total_freed_pages = GET_VAL32(dealloc->grp_info[i],
 189                                               UMAC_DEALLOC_NTFY_PAGE_CNT);
 190                         iwm_tx_credit_inc(iwm, id, total_freed_pages);
 191                 }
 192         }
 193
 194         spin_unlock(&iwm->tx_credit.lock);
 195
 196         return 0;
 197 }
 198
 199 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
 200                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 201 {
 202         IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
 203
 204         return 0;
 205 }
 206
 207 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
 208                                 unsigned long buf_size,
 209                                 struct iwm_wifi_cmd *cmd)
 210 {
 211         IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
 212
 213         return 0;
 214 }
 215
 216 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
 217                       unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 218 {
 219         struct iwm_lmac_tx_resp *tx_resp;
 220         struct iwm_umac_wifi_in_hdr *hdr;
 221
 222         tx_resp = (struct iwm_lmac_tx_resp *)
 223                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 224         hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 225
 226         IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
 227
 228         IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
 229                    le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
 230         IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
 231         IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
 232                    le16_to_cpu(tx_resp->retry_cnt));
 233         IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
 234         IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
 235                    le16_to_cpu(tx_resp->byte_cnt));
 236         IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
 237
 238         return 0;
 239 }
 240
 241
 242 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
 243                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 244 {
 245         u8 opcode;
 246         u8 *calib_buf;
 247         struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
 248                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 249
 250         opcode = hdr->opcode;
 251
 252         BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
 253                opcode < PHY_CALIBRATE_OPCODES_NUM);
 254
 255         IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
 256                     opcode);
 257
 258         buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
 259         calib_buf = iwm->calib_res[opcode].buf;
 260
 261         if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
 262                 kfree(calib_buf);
 263                 calib_buf = kzalloc(buf_size, GFP_KERNEL);
 264                 if (!calib_buf) {
 265                         IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
 266                         return -ENOMEM;
 267                 }
 268                 iwm->calib_res[opcode].buf = calib_buf;
 269                 iwm->calib_res[opcode].size = buf_size;
 270         }
 271
 272         memcpy(calib_buf, hdr, buf_size);
 273         set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
 274
 275         return 0;
 276 }
 277
 278 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
 279                                   unsigned long buf_size,
 280                                   struct iwm_wifi_cmd *cmd)
 281 {
 282         IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
 283
 284         return 0;
 285 }
 286
 287 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
 288                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 289 {
 290         struct iwm_lmac_cal_cfg_resp *cal_resp;
 291
 292         cal_resp = (struct iwm_lmac_cal_cfg_resp *)
 293                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 294
 295         IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
 296                     le32_to_cpu(cal_resp->status));
 297
 298         return 0;
 299 }
 300
 301 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
 302                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 303 {
 304         struct iwm_umac_notif_wifi_status *status =
 305                 (struct iwm_umac_notif_wifi_status *)buf;
 306
 307         iwm->core_enabled |= le16_to_cpu(status->status);
 308
 309         return 0;
 310 }
 311
 312 static struct iwm_rx_ticket_node *
 313 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
 314 {
 315         struct iwm_rx_ticket_node *ticket_node;
 316
 317         ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
 318         if (!ticket_node) {
 319                 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
 320                 return ERR_PTR(-ENOMEM);
 321         }
 322
 323         ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
 324         if (!ticket_node->ticket) {
 325                 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
 326                 kfree(ticket_node);
 327                 return ERR_PTR(-ENOMEM);
 328         }
 329
 330         memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
 331         INIT_LIST_HEAD(&ticket_node->node);
 332
 333         return ticket_node;
 334 }
 335
 336 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
 337 {
 338         kfree(ticket_node->ticket);
 339         kfree(ticket_node);
 340 }
 341
 342 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
 343 {
 344         u8 id_hash = IWM_RX_ID_GET_HASH(id);
 345         struct list_head *packet_list;
 346         struct iwm_rx_packet *packet, *next;
 347
 348         packet_list = &iwm->rx_packets[id_hash];
 349
 350         list_for_each_entry_safe(packet, next, packet_list, node)
 351                 if (packet->id == id)
 352                         return packet;
 353
 354         return NULL;
 355 }
 356
 357 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
 358                                                  u32 size, u16 id)
 359 {
 360         struct iwm_rx_packet *packet;
 361
 362         packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
 363         if (!packet) {
 364                 IWM_ERR(iwm, "Couldn't allocate packet\n");
 365                 return ERR_PTR(-ENOMEM);
 366         }
 367
 368         packet->skb = dev_alloc_skb(size);
 369         if (!packet->skb) {
 370                 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
 371                 kfree(packet);
 372                 return ERR_PTR(-ENOMEM);
 373         }
 374
 375         packet->pkt_size = size;
 376
 377         skb_put(packet->skb, size);
 378         memcpy(packet->skb->data, buf, size);
 379         INIT_LIST_HEAD(&packet->node);
 380         packet->id = id;
 381
 382         return packet;
 383 }
 384
 385 void iwm_rx_free(struct iwm_priv *iwm)
 386 {
 387         struct iwm_rx_ticket_node *ticket, *nt;
 388         struct iwm_rx_packet *packet, *np;
 389         int i;
 390
 391         list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
 392                 list_del(&ticket->node);
 393                 iwm_rx_ticket_node_free(ticket);
 394         }
 395
 396         for (i = 0; i < IWM_RX_ID_HASH; i++) {
 397                 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
 398                                          node) {
 399                         list_del(&packet->node);
 400                         kfree_skb(packet->skb);
 401                         kfree(packet);
 402                 }
 403         }
 404 }
 405
 406 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
 407                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 408 {
 409         struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
 410                 (struct iwm_umac_notif_rx_ticket *)buf;
 411         struct iwm_rx_ticket *ticket =
 412                 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
 413         int i, schedule_rx = 0;
 414
 415         for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
 416                 struct iwm_rx_ticket_node *ticket_node;
 417
 418                 switch (le16_to_cpu(ticket->action)) {
 419                 case IWM_RX_TICKET_RELEASE:
 420                 case IWM_RX_TICKET_DROP:
 421                         /* We can push the packet to the stack */
 422                         ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
 423                         if (IS_ERR(ticket_node))
 424                                 return PTR_ERR(ticket_node);
 425
 426                         IWM_DBG_RX(iwm, DBG, "TICKET RELEASE(%d)\n",
 427                                    ticket->id);
 428                         list_add_tail(&ticket_node->node, &iwm->rx_tickets);
 429
 430                         /*
 431                          * We received an Rx ticket, most likely there's
 432                          * a packet pending for it, it's not worth going
 433                          * through the packet hash list to double check.
 434                          * Let's just fire the rx worker..
 435                          */
 436                         schedule_rx = 1;
 437
 438                         break;
 439
 440                 default:
 441                         IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
 442                                 ticket->action);
 443                 }
 444
 445                 ticket++;
 446         }
 447
 448         if (schedule_rx)
 449                 queue_work(iwm->rx_wq, &iwm->rx_worker);
 450
 451         return 0;
 452 }
 453
 454 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
 455                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 456 {
 457         struct iwm_umac_wifi_in_hdr *wifi_hdr;
 458         struct iwm_rx_packet *packet;
 459         u16 id, buf_offset;
 460         u32 packet_size;
 461
 462         IWM_DBG_RX(iwm, DBG, "\n");
 463
 464         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 465         id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
 466         buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
 467         packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
 468
 469         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
 470                    wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
 471         IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
 472         IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
 473
 474         packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
 475         if (IS_ERR(packet))
 476                 return PTR_ERR(packet);
 477
 478         list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
 479
 480         /* We might (unlikely) have received the packet _after_ the ticket */
 481         queue_work(iwm->rx_wq, &iwm->rx_worker);
 482
 483         return 0;
 484 }
 485
 486 /* MLME handlers */
 487 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
 488                                 unsigned long buf_size,
 489                                 struct iwm_wifi_cmd *cmd)
 490 {
 491         struct iwm_umac_notif_assoc_start *start;
 492
 493         start = (struct iwm_umac_notif_assoc_start *)buf;
 494
 495         IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
 496                      start->bssid, le32_to_cpu(start->roam_reason));
 497
 498         wake_up_interruptible(&iwm->mlme_queue);
 499
 500         return 0;
 501 }
 502
 503 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
 504                                    unsigned long buf_size,
 505                                    struct iwm_wifi_cmd *cmd)
 506 {
 507         struct iwm_umac_notif_assoc_complete *complete =
 508                 (struct iwm_umac_notif_assoc_complete *)buf;
 509
 510         IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
 511                      complete->bssid, complete->status);
 512
 513         switch (le32_to_cpu(complete->status)) {
 514         case UMAC_ASSOC_COMPLETE_SUCCESS:
 515                 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 516                 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
 517                 iwm->channel = complete->channel;
 518
 519                 /* Internal roaming state, avoid notifying SME. */
 520                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 521                     && iwm->conf.mode == UMAC_MODE_BSS) {
 522                         cancel_delayed_work(&iwm->disconnect);
 523                         cfg80211_roamed(iwm_to_ndev(iwm),
 524                                         complete->bssid,
 525                                         iwm->req_ie, iwm->req_ie_len,
 526                                         iwm->resp_ie, iwm->resp_ie_len,
 527                                         GFP_KERNEL);
 528                         break;
 529                 }
 530
 531                 iwm_link_on(iwm);
 532
 533                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 534                         goto ibss;
 535
 536                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 537                         cfg80211_connect_result(iwm_to_ndev(iwm),
 538                                                 complete->bssid,
 539                                                 iwm->req_ie, iwm->req_ie_len,
 540                                                 iwm->resp_ie, iwm->resp_ie_len,
 541                                                 WLAN_STATUS_SUCCESS,
 542                                                 GFP_KERNEL);
 543                 else
 544                         cfg80211_roamed(iwm_to_ndev(iwm),
 545                                         complete->bssid,
 546                                         iwm->req_ie, iwm->req_ie_len,
 547                                         iwm->resp_ie, iwm->resp_ie_len,
 548                                         GFP_KERNEL);
 549                 break;
 550         case UMAC_ASSOC_COMPLETE_FAILURE:
 551                 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 552                 memset(iwm->bssid, 0, ETH_ALEN);
 553                 iwm->channel = 0;
 554
 555                 /* Internal roaming state, avoid notifying SME. */
 556                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 557                     && iwm->conf.mode == UMAC_MODE_BSS) {
 558                         cancel_delayed_work(&iwm->disconnect);
 559                         break;
 560                 }
 561
 562                 iwm_link_off(iwm);
 563
 564                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 565                         goto ibss;
 566
 567                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 568                         cfg80211_connect_result(iwm_to_ndev(iwm),
 569                                                 complete->bssid,
 570                                                 NULL, 0, NULL, 0,
 571                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
 572                                                 GFP_KERNEL);
 573                 else
 574                         cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
 575                                               GFP_KERNEL);
 576                 break;
 577         default:
 578                 break;
 579         }
 580
 581         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 582         return 0;
 583
 584  ibss:
 585         cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
 586         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 587         return 0;
 588 }
 589
 590 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
 591                                        unsigned long buf_size,
 592                                        struct iwm_wifi_cmd *cmd)
 593 {
 594         struct iwm_umac_notif_profile_invalidate *invalid;
 595         u32 reason;
 596
 597         invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
 598         reason = le32_to_cpu(invalid->reason);
 599
 600         IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
 601
 602         if (reason != UMAC_PROFILE_INVALID_REQUEST &&
 603             test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
 604                 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
 605                                         0, WLAN_STATUS_UNSPECIFIED_FAILURE,
 606                                         GFP_KERNEL);
 607
 608         clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
 609         clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 610
 611         iwm->umac_profile_active = 0;
 612         memset(iwm->bssid, 0, ETH_ALEN);
 613         iwm->channel = 0;
 614
 615         iwm_link_off(iwm);
 616
 617         wake_up_interruptible(&iwm->mlme_queue);
 618
 619         return 0;
 620 }
 621
 622 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
 623
 624 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
 625                                           unsigned long buf_size,
 626                                           struct iwm_wifi_cmd *cmd)
 627 {
 628         IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
 629
 630         schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
 631
 632         return 0;
 633 }
 634
 635 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
 636                                   unsigned long buf_size,
 637                                   struct iwm_wifi_cmd *cmd)
 638 {
 639         int ret;
 640         struct iwm_umac_notif_scan_complete *scan_complete =
 641                 (struct iwm_umac_notif_scan_complete *)buf;
 642         u32 result = le32_to_cpu(scan_complete->result);
 643
 644         IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
 645                      le32_to_cpu(scan_complete->type),
 646                      le32_to_cpu(scan_complete->result),
 647                      scan_complete->seq_num);
 648
 649         if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
 650                 IWM_ERR(iwm, "Scan complete while device not scanning\n");
 651                 return -EIO;
 652         }
 653         if (!iwm->scan_request)
 654                 return 0;
 655
 656         ret = iwm_cfg80211_inform_bss(iwm);
 657
 658         cfg80211_scan_done(iwm->scan_request,
 659                            (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
 660         iwm->scan_request = NULL;
 661
 662         return ret;
 663 }
 664
 665 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
 666                                      unsigned long buf_size,
 667                                      struct iwm_wifi_cmd *cmd)
 668 {
 669         struct iwm_umac_notif_sta_info *umac_sta =
 670                         (struct iwm_umac_notif_sta_info *)buf;
 671         struct iwm_sta_info *sta;
 672         int i;
 673
 674         switch (le32_to_cpu(umac_sta->opcode)) {
 675         case UMAC_OPCODE_ADD_MODIFY:
 676                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 677
 678                 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
 679                              "addr = %pM, qos = %d\n",
 680                              sta->valid ? "Modify" : "Add",
 681                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 682                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 683                              umac_sta->mac_addr,
 684                              umac_sta->flags & UMAC_STA_FLAG_QOS);
 685
 686                 sta->valid = 1;
 687                 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
 688                 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
 689                 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
 690                 break;
 691         case UMAC_OPCODE_REMOVE:
 692                 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
 693                              "addr = %pM\n",
 694                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 695                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 696                              umac_sta->mac_addr);
 697
 698                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 699
 700                 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
 701                         sta->valid = 0;
 702
 703                 break;
 704         case UMAC_OPCODE_CLEAR_ALL:
 705                 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
 706                         iwm->sta_table[i].valid = 0;
 707
 708                 break;
 709         default:
 710                 break;
 711         }
 712
 713         return 0;
 714 }
 715
 716 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
 717                                      unsigned long buf_size,
 718                                      struct iwm_wifi_cmd *cmd)
 719 {
 720         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 721         struct ieee80211_mgmt *mgmt;
 722         struct iwm_umac_notif_bss_info *umac_bss =
 723                         (struct iwm_umac_notif_bss_info *)buf;
 724         struct ieee80211_channel *channel;
 725         struct ieee80211_supported_band *band;
 726         struct iwm_bss_info *bss, *next;
 727         s32 signal;
 728         int freq;
 729         u16 frame_len = le16_to_cpu(umac_bss->frame_len);
 730         size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
 731
 732         mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
 733
 734         IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
 735         IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
 736         IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
 737                      le32_to_cpu(umac_bss->timestamp));
 738         IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
 739                      le16_to_cpu(umac_bss->table_idx));
 740         IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
 741         IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
 742         IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
 743         IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
 744
 745         list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 746                 if (bss->bss->table_idx == umac_bss->table_idx)
 747                         break;
 748
 749         if (&bss->node != &iwm->bss_list) {
 750                 /* Remove the old BSS entry, we will add it back later. */
 751                 list_del(&bss->node);
 752                 kfree(bss->bss);
 753         } else {
 754                 /* New BSS entry */
 755
 756                 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
 757                 if (!bss) {
 758                         IWM_ERR(iwm, "Couldn't allocate bss_info\n");
 759                         return -ENOMEM;
 760                 }
 761         }
 762
 763         bss->bss = kzalloc(bss_len, GFP_KERNEL);
 764         if (!bss) {
 765                 kfree(bss);
 766                 IWM_ERR(iwm, "Couldn't allocate bss\n");
 767                 return -ENOMEM;
 768         }
 769
 770         INIT_LIST_HEAD(&bss->node);
 771         memcpy(bss->bss, umac_bss, bss_len);
 772
 773         if (umac_bss->band == UMAC_BAND_2GHZ)
 774                 band = wiphy->bands[IEEE80211_BAND_2GHZ];
 775         else if (umac_bss->band == UMAC_BAND_5GHZ)
 776                 band = wiphy->bands[IEEE80211_BAND_5GHZ];
 777         else {
 778                 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
 779                 goto err;
 780         }
 781
 782         freq = ieee80211_channel_to_frequency(umac_bss->channel);
 783         channel = ieee80211_get_channel(wiphy, freq);
 784         signal = umac_bss->rssi * 100;
 785
 786         bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
 787                                                  mgmt, frame_len,
 788                                                  signal, GFP_KERNEL);
 789         if (!bss->cfg_bss)
 790                 goto err;
 791
 792         list_add_tail(&bss->node, &iwm->bss_list);
 793
 794         return 0;
 795  err:
 796         kfree(bss->bss);
 797         kfree(bss);
 798
 799         return -EINVAL;
 800 }
 801
 802 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
 803                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 804 {
 805         struct iwm_umac_notif_bss_removed *bss_rm =
 806                 (struct iwm_umac_notif_bss_removed *)buf;
 807         struct iwm_bss_info *bss, *next;
 808         u16 table_idx;
 809         int i;
 810
 811         for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
 812                 table_idx = (le16_to_cpu(bss_rm->entries[i])
 813                              & IWM_BSS_REMOVE_INDEX_MSK);
 814                 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 815                         if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
 816                                 struct ieee80211_mgmt *mgmt;
 817
 818                                 mgmt = (struct ieee80211_mgmt *)
 819                                         (bss->bss->frame_buf);
 820                                 IWM_DBG_MLME(iwm, ERR,
 821                                              "BSS removed: %pM\n",
 822                                              mgmt->bssid);
 823                                 list_del(&bss->node);
 824                                 kfree(bss->bss);
 825                                 kfree(bss);
 826                         }
 827         }
 828
 829         return 0;
 830 }
 831
 832 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
 833                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 834 {
 835         struct iwm_umac_notif_mgt_frame *mgt_frame =
 836                         (struct iwm_umac_notif_mgt_frame *)buf;
 837         struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
 838         u8 *ie;
 839
 840         IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
 841                     le16_to_cpu(mgt_frame->len));
 842
 843         if (ieee80211_is_assoc_req(mgt->frame_control)) {
 844                 ie = mgt->u.assoc_req.variable;;
 845                 iwm->req_ie_len =
 846                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 847                 kfree(iwm->req_ie);
 848                 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
 849                                       iwm->req_ie_len, GFP_KERNEL);
 850         } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
 851                 ie = mgt->u.reassoc_req.variable;;
 852                 iwm->req_ie_len =
 853                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 854                 kfree(iwm->req_ie);
 855                 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
 856                                       iwm->req_ie_len, GFP_KERNEL);
 857         } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
 858                 ie = mgt->u.assoc_resp.variable;;
 859                 iwm->resp_ie_len =
 860                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 861                 kfree(iwm->resp_ie);
 862                 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
 863                                        iwm->resp_ie_len, GFP_KERNEL);
 864         } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
 865                 ie = mgt->u.reassoc_resp.variable;;
 866                 iwm->resp_ie_len =
 867                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 868                 kfree(iwm->resp_ie);
 869                 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
 870                                        iwm->resp_ie_len, GFP_KERNEL);
 871         } else {
 872                 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
 873                         le16_to_cpu(mgt->frame_control));
 874                 return 0;
 875         }
 876
 877         return 0;
 878 }
 879
 880 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
 881                         unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 882 {
 883         struct iwm_umac_notif_wifi_if *notif =
 884                 (struct iwm_umac_notif_wifi_if *)buf;
 885
 886         switch (notif->status) {
 887         case WIFI_IF_NTFY_ASSOC_START:
 888                 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
 889         case WIFI_IF_NTFY_ASSOC_COMPLETE:
 890                 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
 891         case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
 892                 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
 893         case WIFI_IF_NTFY_CONNECTION_TERMINATED:
 894                 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
 895         case WIFI_IF_NTFY_SCAN_COMPLETE:
 896                 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
 897         case WIFI_IF_NTFY_STA_TABLE_CHANGE:
 898                 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
 899         case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
 900                 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
 901                 break;
 902         case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
 903                 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
 904         case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
 905                 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
 906                 break;
 907         case WIFI_IF_NTFY_MGMT_FRAME:
 908                 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
 909         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
 910         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
 911         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
 912         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
 913         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
 914         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
 915         case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
 916         case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
 917         case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
 918         case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
 919                 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
 920                              notif->status);
 921                 break;
 922         default:
 923                 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
 924                 break;
 925         }
 926
 927         return 0;
 928 }
 929
 930 #define IWM_STATS_UPDATE_INTERVAL               (2 * HZ)
 931
 932 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
 933                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 934 {
 935         struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
 936         struct iw_statistics *wstats = &iwm->wstats;
 937         u16 max_rate = 0;
 938         int i;
 939
 940         IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
 941
 942         if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
 943                 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
 944                         max_rate = max_t(u16, max_rate,
 945                                          max(le16_to_cpu(stats->tx_rate[i]),
 946                                              le16_to_cpu(stats->rx_rate[i])));
 947                 }
 948                 /* UMAC passes rate info multiplies by 2 */
 949                 iwm->rate = max_rate >> 1;
 950         }
 951         iwm->txpower = le32_to_cpu(stats->tx_power);
 952
 953         wstats->status = 0;
 954
 955         wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
 956         wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
 957         wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
 958         wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
 959
 960         wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
 961
 962         /* according to cfg80211 */
 963         if (stats->rssi_dbm < -110)
 964                 wstats->qual.qual = 0;
 965         else if (stats->rssi_dbm > -40)
 966                 wstats->qual.qual = 70;
 967         else
 968                 wstats->qual.qual = stats->rssi_dbm + 110;
 969
 970         wstats->qual.level = stats->rssi_dbm;
 971         wstats->qual.noise = stats->noise_dbm;
 972         wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
 973
 974         schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
 975
 976         mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
 977
 978         return 0;
 979 }
 980
 981 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
 982                                 unsigned long buf_size,
 983                                 struct iwm_wifi_cmd *cmd)
 984 {
 985         struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
 986                 (struct iwm_umac_cmd_eeprom_proxy *)
 987                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 988         struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
 989         u32 hdr_offset = le32_to_cpu(hdr->offset);
 990         u32 hdr_len = le32_to_cpu(hdr->len);
 991         u32 hdr_type = le32_to_cpu(hdr->type);
 992
 993         IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
 994                     hdr_type, hdr_len, hdr_offset);
 995
 996         if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
 997                 return -EINVAL;
 998
 999         switch (hdr_type) {
1000         case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1001                 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1002                 break;
1003         case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1004         default:
1005                 return -ENOTSUPP;
1006         }
1007
1008         return 0;
1009 }
1010
1011 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1012                                      unsigned long buf_size,
1013                                      struct iwm_wifi_cmd *cmd)
1014 {
1015         struct iwm_umac_cmd_get_channel_list *ch_list =
1016                         (struct iwm_umac_cmd_get_channel_list *)
1017                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1018         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1019         struct ieee80211_supported_band *band;
1020         int i;
1021
1022         band = wiphy->bands[IEEE80211_BAND_2GHZ];
1023
1024         for (i = 0; i < band->n_channels; i++) {
1025                 unsigned long ch_mask_0 =
1026                         le32_to_cpu(ch_list->ch[0].channels_mask);
1027                 unsigned long ch_mask_2 =
1028                         le32_to_cpu(ch_list->ch[2].channels_mask);
1029
1030                 if (!test_bit(i, &ch_mask_0))
1031                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1032
1033                 if (!test_bit(i, &ch_mask_2))
1034                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1035         }
1036
1037         band = wiphy->bands[IEEE80211_BAND_5GHZ];
1038
1039         for (i = 0; i < min(band->n_channels, 32); i++) {
1040                 unsigned long ch_mask_1 =
1041                         le32_to_cpu(ch_list->ch[1].channels_mask);
1042                 unsigned long ch_mask_3 =
1043                         le32_to_cpu(ch_list->ch[3].channels_mask);
1044
1045                 if (!test_bit(i, &ch_mask_1))
1046                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1047
1048                 if (!test_bit(i, &ch_mask_3))
1049                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1050         }
1051
1052         return 0;
1053 }
1054
1055 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1056                                    unsigned long buf_size,
1057                                    struct iwm_wifi_cmd *cmd)
1058 {
1059         struct iwm_umac_wifi_if *hdr =
1060                         (struct iwm_umac_wifi_if *)cmd->buf.payload;
1061
1062         IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1063                     "oid is 0x%x\n", hdr->oid);
1064
1065         if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1066                 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1067                 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1068         } else
1069                 return -EINVAL;
1070
1071         switch (hdr->oid) {
1072         case UMAC_WIFI_IF_CMD_SET_PROFILE:
1073                 iwm->umac_profile_active = 1;
1074                 break;
1075         default:
1076                 break;
1077         }
1078
1079         return 0;
1080 }
1081
1082 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1083                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1084 {
1085         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1086         struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1087                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1088         u32 flags = le32_to_cpu(state->flags);
1089
1090         IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1091                  flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1092                  flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1093
1094         wiphy_rfkill_set_hw_state(wiphy, flags & IWM_CARD_STATE_HW_DISABLED);
1095
1096         return 0;
1097 }
1098
1099 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1100                               unsigned long buf_size)
1101 {
1102         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1103         struct iwm_wifi_cmd *cmd;
1104         u8 source, cmd_id;
1105         u16 seq_num;
1106         u32 count;
1107         u8 resp;
1108
1109         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1110         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1111
1112         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1113         if (source >= IWM_SRC_NUM) {
1114                 IWM_CRIT(iwm, "invalid source %d\n", source);
1115                 return -EINVAL;
1116         }
1117
1118         count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1119         count += sizeof(struct iwm_umac_wifi_in_hdr) -
1120                  sizeof(struct iwm_dev_cmd_hdr);
1121         if (count > buf_size) {
1122                 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1123                 return -EINVAL;
1124         }
1125
1126         resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1127
1128         seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1129
1130         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1131                    cmd_id, source, seq_num);
1132
1133         /*
1134          * If this is a response to a previously sent command, there must
1135          * be a pending command for this sequence number.
1136          */
1137         cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1138
1139         /* Notify the caller only for sync commands. */
1140         switch (source) {
1141         case UMAC_HDI_IN_SOURCE_FHRX:
1142                 if (iwm->lmac_handlers[cmd_id] &&
1143                     test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1144                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1145                                               buf, count);
1146                 break;
1147         case UMAC_HDI_IN_SOURCE_FW:
1148                 if (iwm->umac_handlers[cmd_id] &&
1149                     test_bit(cmd_id, &iwm->umac_handler_map[0]))
1150                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1151                                               buf, count);
1152                 break;
1153         case UMAC_HDI_IN_SOURCE_UDMA:
1154                 break;
1155         }
1156
1157         return iwm_rx_handle_resp(iwm, buf, count, cmd);
1158 }
1159
1160 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1161                        struct iwm_wifi_cmd *cmd)
1162 {
1163         u8 source, cmd_id;
1164         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1165         int ret = 0;
1166
1167         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1168         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1169
1170         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1171
1172         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1173
1174         switch (source) {
1175         case UMAC_HDI_IN_SOURCE_FHRX:
1176                 if (iwm->lmac_handlers[cmd_id])
1177                         ret = iwm->lmac_handlers[cmd_id]
1178                                         (iwm, buf, buf_size, cmd);
1179                 break;
1180         case UMAC_HDI_IN_SOURCE_FW:
1181                 if (iwm->umac_handlers[cmd_id])
1182                         ret = iwm->umac_handlers[cmd_id]
1183                                         (iwm, buf, buf_size, cmd);
1184                 break;
1185         case UMAC_HDI_IN_SOURCE_UDMA:
1186                 ret = -EINVAL;
1187                 break;
1188         }
1189
1190         kfree(cmd);
1191
1192         return ret;
1193 }
1194
1195 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1196                                  unsigned long buf_size)
1197 {
1198         u8 seq_num;
1199         struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1200         struct iwm_nonwifi_cmd *cmd, *next;
1201
1202         seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1203
1204         /*
1205          * We received a non wifi answer.
1206          * Let's check if there's a pending command for it, and if so
1207          * replace the command payload with the buffer, and then wake the
1208          * callers up.
1209          * That means we only support synchronised non wifi command response
1210          * schemes.
1211          */
1212         list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1213                 if (cmd->seq_num == seq_num) {
1214                         cmd->resp_received = 1;
1215                         cmd->buf.len = buf_size;
1216                         memcpy(cmd->buf.hdr, buf, buf_size);
1217                         wake_up_interruptible(&iwm->nonwifi_queue);
1218                 }
1219
1220         return 0;
1221 }
1222
1223 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1224                               unsigned long buf_size)
1225 {
1226         int ret = 0;
1227         u8 op_code;
1228         unsigned long buf_offset = 0;
1229         struct iwm_udma_in_hdr *hdr;
1230
1231         /*
1232          * To allow for a more efficient bus usage, UMAC
1233          * messages are encapsulated into UDMA ones. This
1234          * way we can have several UMAC messages in one bus
1235          * transfer.
1236          * A UDMA frame size is always aligned on 16 bytes,
1237          * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1238          * word. This is how we parse a bus frame into several
1239          * UDMA ones.
1240          */
1241         while (buf_offset < buf_size) {
1242
1243                 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1244
1245                 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1246                         IWM_DBG_RX(iwm, DBG, "End of frame\n");
1247                         break;
1248                 }
1249
1250                 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1251
1252                 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1253
1254                 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1255                         ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1256                                                   buf_size - buf_offset);
1257                 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1258                         if (GET_VAL32(hdr->cmd,
1259                                       UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1260                             UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1261                                 IWM_ERR(iwm, "Incorrect hw signature\n");
1262                                 return -EINVAL;
1263                         }
1264                         ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1265                                                      buf_size - buf_offset);
1266                 } else {
1267                         IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1268                         ret |= -EINVAL;
1269                 }
1270
1271                 buf_offset += iwm_rx_resp_size(hdr);
1272         }
1273
1274         return ret;
1275 }
1276
1277 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1278 {
1279         struct iwm_udma_in_hdr *hdr;
1280
1281         hdr = (struct iwm_udma_in_hdr *)buf;
1282
1283         switch (le32_to_cpu(hdr->cmd)) {
1284         case UMAC_REBOOT_BARKER:
1285                 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1286                                       IWM_SRC_UDMA, buf, buf_size);
1287         case UMAC_ACK_BARKER:
1288                 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1289                                       IWM_SRC_UDMA, NULL, 0);
1290         default:
1291                 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1292                 return iwm_rx_handle_umac(iwm, buf, buf_size);
1293         }
1294
1295         return 0;
1296 }
1297
1298 static const iwm_handler iwm_umac_handlers[] =
1299 {
1300         [UMAC_NOTIFY_OPCODE_ERROR]              = iwm_ntf_error,
1301         [UMAC_NOTIFY_OPCODE_ALIVE]              = iwm_ntf_umac_alive,
1302         [UMAC_NOTIFY_OPCODE_INIT_COMPLETE]      = iwm_ntf_init_complete,
1303         [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS]   = iwm_ntf_wifi_status,
1304         [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER]    = iwm_ntf_mlme,
1305         [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC]       = iwm_ntf_tx_credit_update,
1306         [UMAC_NOTIFY_OPCODE_RX_TICKET]          = iwm_ntf_rx_ticket,
1307         [UMAC_CMD_OPCODE_RESET]                 = iwm_ntf_umac_reset,
1308         [UMAC_NOTIFY_OPCODE_STATS]              = iwm_ntf_statistics,
1309         [UMAC_CMD_OPCODE_EEPROM_PROXY]          = iwm_ntf_eeprom_proxy,
1310         [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST]    = iwm_ntf_channel_info_list,
1311         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1312         [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER]       = iwm_ntf_wifi_if_wrapper,
1313 };
1314
1315 static const iwm_handler iwm_lmac_handlers[] =
1316 {
1317         [REPLY_TX]                              = iwm_ntf_tx,
1318         [REPLY_ALIVE]                           = iwm_ntf_lmac_version,
1319         [CALIBRATION_RES_NOTIFICATION]          = iwm_ntf_calib_res,
1320         [CALIBRATION_COMPLETE_NOTIFICATION]     = iwm_ntf_calib_complete,
1321         [CALIBRATION_CFG_CMD]                   = iwm_ntf_calib_cfg,
1322         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1323         [CARD_STATE_NOTIFICATION]               = iwm_ntf_card_state,
1324 };
1325
1326 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1327 {
1328         iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1329         iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1330 }
1331
1332 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1333 {
1334         struct ieee80211_hdr *hdr;
1335         unsigned int hdr_len;
1336
1337         hdr = (struct ieee80211_hdr *)skb->data;
1338
1339         if (!ieee80211_has_protected(hdr->frame_control))
1340                 return;
1341
1342         hdr_len = ieee80211_hdrlen(hdr->frame_control);
1343         if (hdr_total_len <= hdr_len)
1344                 return;
1345
1346         memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1347         skb_pull(skb, (hdr_total_len - hdr_len));
1348 }
1349
1350 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1351                                  struct iwm_rx_packet *packet,
1352                                  struct iwm_rx_ticket_node *ticket_node)
1353 {
1354         u32 payload_offset = 0, payload_len;
1355         struct iwm_rx_ticket *ticket = ticket_node->ticket;
1356         struct iwm_rx_mpdu_hdr *mpdu_hdr;
1357         struct ieee80211_hdr *hdr;
1358
1359         mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1360         payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1361         /* Padding is 0 or 2 bytes */
1362         payload_len = le16_to_cpu(mpdu_hdr->len) +
1363                 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1364         payload_len -= ticket->tail_len;
1365
1366         IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1367                    "ticket offset:%d ticket tail len:%d\n",
1368                    payload_len, payload_offset, ticket->payload_offset,
1369                    ticket->tail_len);
1370
1371         IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1372
1373         skb_pull(packet->skb, payload_offset);
1374         skb_trim(packet->skb, payload_len);
1375
1376         iwm_remove_iv(packet->skb, ticket->payload_offset);
1377
1378         hdr = (struct ieee80211_hdr *) packet->skb->data;
1379         if (ieee80211_is_data_qos(hdr->frame_control)) {
1380                 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1381                  * to the qos_ctl field in IEEE 802.11 headers. */
1382                 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1383                         packet->skb->data,
1384                         ieee80211_hdrlen(hdr->frame_control) -
1385                         IEEE80211_QOS_CTL_LEN);
1386                 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1387                                 IEEE80211_QOS_CTL_LEN + 2);
1388                 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1389         }
1390
1391         IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1392                     packet->skb->data, packet->skb->len);
1393 }
1394
1395 static void classify8023(struct sk_buff *skb)
1396 {
1397         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1398
1399         if (ieee80211_is_data_qos(hdr->frame_control)) {
1400                 u8 *qc = ieee80211_get_qos_ctl(hdr);
1401                 /* frame has qos control */
1402                 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1403         } else {
1404                 skb->priority = 0;
1405         }
1406 }
1407
1408 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1409                                   struct iwm_rx_packet *packet,
1410                                   struct iwm_rx_ticket_node *ticket_node)
1411 {
1412         int ret;
1413         struct sk_buff *skb = packet->skb;
1414         struct wireless_dev *wdev = iwm_to_wdev(iwm);
1415         struct net_device *ndev = iwm_to_ndev(iwm);
1416
1417         IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1418
1419         switch (le16_to_cpu(ticket_node->ticket->action)) {
1420         case IWM_RX_TICKET_RELEASE:
1421                 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1422                 classify8023(skb);
1423                 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1424                 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1425                 if (ret < 0) {
1426                         IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1427                                    "%d\n", ret);
1428                         break;
1429                 }
1430
1431                 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1432
1433                 skb->dev = iwm_to_ndev(iwm);
1434                 skb->protocol = eth_type_trans(skb, ndev);
1435                 skb->ip_summed = CHECKSUM_NONE;
1436                 memset(skb->cb, 0, sizeof(skb->cb));
1437
1438                 ndev->stats.rx_packets++;
1439                 ndev->stats.rx_bytes += skb->len;
1440
1441                 if (netif_rx_ni(skb) == NET_RX_DROP) {
1442                         IWM_ERR(iwm, "Packet dropped\n");
1443                         ndev->stats.rx_dropped++;
1444                 }
1445                 break;
1446         case IWM_RX_TICKET_DROP:
1447                 IWM_DBG_RX(iwm, DBG, "DROP packet\n");
1448                 kfree_skb(packet->skb);
1449                 break;
1450         default:
1451                 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1452                         le16_to_cpu(ticket_node->ticket->action));
1453                 kfree_skb(packet->skb);
1454         }
1455
1456         kfree(packet);
1457         iwm_rx_ticket_node_free(ticket_node);
1458 }
1459
1460 /*
1461  * Rx data processing:
1462  *
1463  * We're receiving Rx packet from the LMAC, and Rx ticket from
1464  * the UMAC.
1465  * To forward a target data packet upstream (i.e. to the
1466  * kernel network stack), we must have received an Rx ticket
1467  * that tells us we're allowed to release this packet (ticket
1468  * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1469  * among other things, where valid data actually starts in the Rx
1470  * packet.
1471  */
1472 void iwm_rx_worker(struct work_struct *work)
1473 {
1474         struct iwm_priv *iwm;
1475         struct iwm_rx_ticket_node *ticket, *next;
1476
1477         iwm = container_of(work, struct iwm_priv, rx_worker);
1478
1479         /*
1480          * We go through the tickets list and if there is a pending
1481          * packet for it, we push it upstream.
1482          * We stop whenever a ticket is missing its packet, as we're
1483          * supposed to send the packets in order.
1484          */
1485         list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1486                 struct iwm_rx_packet *packet =
1487                         iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1488
1489                 if (!packet) {
1490                         IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1491                                    "to be handled first\n",
1492                                    le16_to_cpu(ticket->ticket->id));
1493                         return;
1494                 }
1495
1496                 list_del(&ticket->node);
1497                 list_del(&packet->node);
1498                 iwm_rx_process_packet(iwm, packet, ticket);
1499         }
1500 }
1501