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