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