drivers/net/wireless/ath/ath6kl/main.c

   1 /*
   2  * Copyright (c) 2004-2011 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "core.h"
  18 #include "hif-ops.h"
  19 #include "cfg80211.h"
  20 #include "target.h"
  21 #include "debug.h"
  22
  23 struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 *node_addr)
  24 {
  25         struct ath6kl_sta *conn = NULL;
  26         u8 i, max_conn;
  27
  28         max_conn = (ar->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0;
  29
  30         for (i = 0; i < max_conn; i++) {
  31                 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) {
  32                         conn = &ar->sta_list[i];
  33                         break;
  34                 }
  35         }
  36
  37         return conn;
  38 }
  39
  40 struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid)
  41 {
  42         struct ath6kl_sta *conn = NULL;
  43         u8 ctr;
  44
  45         for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
  46                 if (ar->sta_list[ctr].aid == aid) {
  47                         conn = &ar->sta_list[ctr];
  48                         break;
  49                 }
  50         }
  51         return conn;
  52 }
  53
  54 static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie,
  55                         u8 ielen, u8 keymgmt, u8 ucipher, u8 auth)
  56 {
  57         struct ath6kl_sta *sta;
  58         u8 free_slot;
  59
  60         free_slot = aid - 1;
  61
  62         sta = &ar->sta_list[free_slot];
  63         memcpy(sta->mac, mac, ETH_ALEN);
  64         if (ielen <= ATH6KL_MAX_IE)
  65                 memcpy(sta->wpa_ie, wpaie, ielen);
  66         sta->aid = aid;
  67         sta->keymgmt = keymgmt;
  68         sta->ucipher = ucipher;
  69         sta->auth = auth;
  70
  71         ar->sta_list_index = ar->sta_list_index | (1 << free_slot);
  72         ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid);
  73 }
  74
  75 static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
  76 {
  77         struct ath6kl_sta *sta = &ar->sta_list[i];
  78
  79         /* empty the queued pkts in the PS queue if any */
  80         spin_lock_bh(&sta->psq_lock);
  81         skb_queue_purge(&sta->psq);
  82         spin_unlock_bh(&sta->psq_lock);
  83
  84         memset(&ar->ap_stats.sta[sta->aid - 1], 0,
  85                sizeof(struct wmi_per_sta_stat));
  86         memset(sta->mac, 0, ETH_ALEN);
  87         memset(sta->wpa_ie, 0, ATH6KL_MAX_IE);
  88         sta->aid = 0;
  89         sta->sta_flags = 0;
  90
  91         ar->sta_list_index = ar->sta_list_index & ~(1 << i);
  92
  93 }
  94
  95 static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason)
  96 {
  97         u8 i, removed = 0;
  98
  99         if (is_zero_ether_addr(mac))
 100                 return removed;
 101
 102         if (is_broadcast_ether_addr(mac)) {
 103                 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n");
 104
 105                 for (i = 0; i < AP_MAX_NUM_STA; i++) {
 106                         if (!is_zero_ether_addr(ar->sta_list[i].mac)) {
 107                                 ath6kl_sta_cleanup(ar, i);
 108                                 removed = 1;
 109                         }
 110                 }
 111         } else {
 112                 for (i = 0; i < AP_MAX_NUM_STA; i++) {
 113                         if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) {
 114                                 ath6kl_dbg(ATH6KL_DBG_TRC,
 115                                            "deleting station %pM aid=%d reason=%d\n",
 116                                            mac, ar->sta_list[i].aid, reason);
 117                                 ath6kl_sta_cleanup(ar, i);
 118                                 removed = 1;
 119                                 break;
 120                         }
 121                 }
 122         }
 123
 124         return removed;
 125 }
 126
 127 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac)
 128 {
 129         struct ath6kl *ar = devt;
 130         return ar->ac2ep_map[ac];
 131 }
 132
 133 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar)
 134 {
 135         struct ath6kl_cookie *cookie;
 136
 137         cookie = ar->cookie_list;
 138         if (cookie != NULL) {
 139                 ar->cookie_list = cookie->arc_list_next;
 140                 ar->cookie_count--;
 141         }
 142
 143         return cookie;
 144 }
 145
 146 void ath6kl_cookie_init(struct ath6kl *ar)
 147 {
 148         u32 i;
 149
 150         ar->cookie_list = NULL;
 151         ar->cookie_count = 0;
 152
 153         memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem));
 154
 155         for (i = 0; i < MAX_COOKIE_NUM; i++)
 156                 ath6kl_free_cookie(ar, &ar->cookie_mem[i]);
 157 }
 158
 159 void ath6kl_cookie_cleanup(struct ath6kl *ar)
 160 {
 161         ar->cookie_list = NULL;
 162         ar->cookie_count = 0;
 163 }
 164
 165 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie)
 166 {
 167         /* Insert first */
 168
 169         if (!ar || !cookie)
 170                 return;
 171
 172         cookie->arc_list_next = ar->cookie_list;
 173         ar->cookie_list = cookie;
 174         ar->cookie_count++;
 175 }
 176
 177 /* set the window address register (using 4-byte register access ). */
 178 static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr)
 179 {
 180         int status;
 181         s32 i;
 182         __le32 addr_val;
 183
 184         /*
 185          * Write bytes 1,2,3 of the register to set the upper address bytes,
 186          * the LSB is written last to initiate the access cycle
 187          */
 188
 189         for (i = 1; i <= 3; i++) {
 190                 /*
 191                  * Fill the buffer with the address byte value we want to
 192                  * hit 4 times. No need to worry about endianness as the
 193                  * same byte is copied to all four bytes of addr_val at
 194                  * any time.
 195                  */
 196                 memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4);
 197
 198                 /*
 199                  * Hit each byte of the register address with a 4-byte
 200                  * write operation to the same address, this is a harmless
 201                  * operation.
 202                  */
 203                 status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val,
 204                                              4, HIF_WR_SYNC_BYTE_FIX);
 205                 if (status)
 206                         break;
 207         }
 208
 209         if (status) {
 210                 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n",
 211                            addr, reg_addr);
 212                 return status;
 213         }
 214
 215         /*
 216          * Write the address register again, this time write the whole
 217          * 4-byte value. The effect here is that the LSB write causes the
 218          * cycle to start, the extra 3 byte write to bytes 1,2,3 has no
 219          * effect since we are writing the same values again
 220          */
 221         addr_val = cpu_to_le32(addr);
 222         status = hif_read_write_sync(ar, reg_addr,
 223                                      (u8 *)&(addr_val),
 224                                      4, HIF_WR_SYNC_BYTE_INC);
 225
 226         if (status) {
 227                 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n",
 228                            addr, reg_addr);
 229                 return status;
 230         }
 231
 232         return 0;
 233 }
 234
 235 /*
 236  * Read from the hardware through its diagnostic window. No cooperation
 237  * from the firmware is required for this.
 238  */
 239 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value)
 240 {
 241         int ret;
 242
 243         /* set window register to start read cycle */
 244         ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address);
 245         if (ret)
 246                 return ret;
 247
 248         /* read the data */
 249         ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value,
 250                                   sizeof(*value), HIF_RD_SYNC_BYTE_INC);
 251         if (ret) {
 252                 ath6kl_warn("failed to read32 through diagnose window: %d\n",
 253                             ret);
 254                 return ret;
 255         }
 256
 257         return 0;
 258 }
 259
 260 /*
 261  * Write to the ATH6KL through its diagnostic window. No cooperation from
 262  * the Target is required for this.
 263  */
 264 int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value)
 265 {
 266         int ret;
 267
 268         /* set write data */
 269         ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value,
 270                                   sizeof(value), HIF_WR_SYNC_BYTE_INC);
 271         if (ret) {
 272                 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n",
 273                            address, value);
 274                 return ret;
 275         }
 276
 277         /* set window register, which starts the write cycle */
 278         return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS,
 279                                       address);
 280 }
 281
 282 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length)
 283 {
 284         u32 count, *buf = data;
 285         int ret;
 286
 287         if (WARN_ON(length % 4))
 288                 return -EINVAL;
 289
 290         for (count = 0; count < length / 4; count++, address += 4) {
 291                 ret = ath6kl_diag_read32(ar, address, &buf[count]);
 292                 if (ret)
 293                         return ret;
 294         }
 295
 296         return 0;
 297 }
 298
 299 int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length)
 300 {
 301         u32 count;
 302         __le32 *buf = data;
 303         int ret;
 304
 305         if (WARN_ON(length % 4))
 306                 return -EINVAL;
 307
 308         for (count = 0; count < length / 4; count++, address += 4) {
 309                 ret = ath6kl_diag_write32(ar, address, buf[count]);
 310                 if (ret)
 311                         return ret;
 312         }
 313
 314         return 0;
 315 }
 316
 317 int ath6kl_read_fwlogs(struct ath6kl *ar)
 318 {
 319         struct ath6kl_dbglog_hdr debug_hdr;
 320         struct ath6kl_dbglog_buf debug_buf;
 321         u32 address, length, dropped, firstbuf, debug_hdr_addr;
 322         int ret = 0, loop;
 323         u8 *buf;
 324
 325         buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL);
 326         if (!buf)
 327                 return -ENOMEM;
 328
 329         address = TARG_VTOP(ar->target_type,
 330                             ath6kl_get_hi_item_addr(ar,
 331                                                     HI_ITEM(hi_dbglog_hdr)));
 332
 333         ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr);
 334         if (ret)
 335                 goto out;
 336
 337         /* Get the contents of the ring buffer */
 338         if (debug_hdr_addr == 0) {
 339                 ath6kl_warn("Invalid address for debug_hdr_addr\n");
 340                 ret = -EINVAL;
 341                 goto out;
 342         }
 343
 344         address = TARG_VTOP(ar->target_type, debug_hdr_addr);
 345         ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr));
 346
 347         address = TARG_VTOP(ar->target_type,
 348                             le32_to_cpu(debug_hdr.dbuf_addr));
 349         firstbuf = address;
 350         dropped = le32_to_cpu(debug_hdr.dropped);
 351         ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
 352
 353         loop = 100;
 354
 355         do {
 356                 address = TARG_VTOP(ar->target_type,
 357                                     le32_to_cpu(debug_buf.buffer_addr));
 358                 length = le32_to_cpu(debug_buf.length);
 359
 360                 if (length != 0 && (le32_to_cpu(debug_buf.length) <=
 361                                     le32_to_cpu(debug_buf.bufsize))) {
 362                         length = ALIGN(length, 4);
 363
 364                         ret = ath6kl_diag_read(ar, address,
 365                                                buf, length);
 366                         if (ret)
 367                                 goto out;
 368
 369                         ath6kl_debug_fwlog_event(ar, buf, length);
 370                 }
 371
 372                 address = TARG_VTOP(ar->target_type,
 373                                     le32_to_cpu(debug_buf.next));
 374                 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
 375                 if (ret)
 376                         goto out;
 377
 378                 loop--;
 379
 380                 if (WARN_ON(loop == 0)) {
 381                         ret = -ETIMEDOUT;
 382                         goto out;
 383                 }
 384         } while (address != firstbuf);
 385
 386 out:
 387         kfree(buf);
 388
 389         return ret;
 390 }
 391
 392 /* FIXME: move to a better place, target.h? */
 393 #define AR6003_RESET_CONTROL_ADDRESS 0x00004000
 394 #define AR6004_RESET_CONTROL_ADDRESS 0x00004000
 395
 396 static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type,
 397                                 bool wait_fot_compltn, bool cold_reset)
 398 {
 399         int status = 0;
 400         u32 address;
 401         __le32 data;
 402
 403         if (target_type != TARGET_TYPE_AR6003 &&
 404                 target_type != TARGET_TYPE_AR6004)
 405                 return;
 406
 407         data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) :
 408                             cpu_to_le32(RESET_CONTROL_MBOX_RST);
 409
 410         switch (target_type) {
 411         case TARGET_TYPE_AR6003:
 412                 address = AR6003_RESET_CONTROL_ADDRESS;
 413                 break;
 414         case TARGET_TYPE_AR6004:
 415                 address = AR6004_RESET_CONTROL_ADDRESS;
 416                 break;
 417         default:
 418                 address = AR6003_RESET_CONTROL_ADDRESS;
 419                 break;
 420         }
 421
 422         status = ath6kl_diag_write32(ar, address, data);
 423
 424         if (status)
 425                 ath6kl_err("failed to reset target\n");
 426 }
 427
 428 void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile,
 429                           bool get_dbglogs)
 430 {
 431         struct ath6kl *ar = ath6kl_priv(dev);
 432         static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 433         bool discon_issued;
 434
 435         netif_stop_queue(dev);
 436
 437         /* disable the target and the interrupts associated with it */
 438         if (test_bit(WMI_READY, &ar->flag)) {
 439                 discon_issued = (test_bit(CONNECTED, &ar->flag) ||
 440                                  test_bit(CONNECT_PEND, &ar->flag));
 441                 ath6kl_disconnect(ar);
 442                 if (!keep_profile)
 443                         ath6kl_init_profile_info(ar);
 444
 445                 del_timer(&ar->disconnect_timer);
 446
 447                 clear_bit(WMI_READY, &ar->flag);
 448                 ath6kl_wmi_shutdown(ar->wmi);
 449                 clear_bit(WMI_ENABLED, &ar->flag);
 450                 ar->wmi = NULL;
 451
 452                 /*
 453                  * After wmi_shudown all WMI events will be dropped. We
 454                  * need to cleanup the buffers allocated in AP mode and
 455                  * give disconnect notification to stack, which usually
 456                  * happens in the disconnect_event. Simulate the disconnect
 457                  * event by calling the function directly. Sometimes
 458                  * disconnect_event will be received when the debug logs
 459                  * are collected.
 460                  */
 461                 if (discon_issued)
 462                         ath6kl_disconnect_event(ar, DISCONNECT_CMD,
 463                                                 (ar->nw_type & AP_NETWORK) ?
 464                                                 bcast_mac : ar->bssid,
 465                                                 0, NULL, 0);
 466
 467                 ar->user_key_ctrl = 0;
 468
 469         } else {
 470                 ath6kl_dbg(ATH6KL_DBG_TRC,
 471                            "%s: wmi is not ready 0x%p 0x%p\n",
 472                            __func__, ar, ar->wmi);
 473
 474                 /* Shut down WMI if we have started it */
 475                 if (test_bit(WMI_ENABLED, &ar->flag)) {
 476                         ath6kl_dbg(ATH6KL_DBG_TRC,
 477                                    "%s: shut down wmi\n", __func__);
 478                         ath6kl_wmi_shutdown(ar->wmi);
 479                         clear_bit(WMI_ENABLED, &ar->flag);
 480                         ar->wmi = NULL;
 481                 }
 482         }
 483
 484         if (ar->htc_target) {
 485                 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
 486                 ath6kl_htc_stop(ar->htc_target);
 487         }
 488
 489         /*
 490          * Try to reset the device if we can. The driver may have been
 491          * configure NOT to reset the target during a debug session.
 492          */
 493         ath6kl_dbg(ATH6KL_DBG_TRC,
 494                    "attempting to reset target on instance destroy\n");
 495         ath6kl_reset_device(ar, ar->target_type, true, true);
 496 }
 497
 498 static void ath6kl_install_static_wep_keys(struct ath6kl *ar)
 499 {
 500         u8 index;
 501         u8 keyusage;
 502
 503         for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) {
 504                 if (ar->wep_key_list[index].key_len) {
 505                         keyusage = GROUP_USAGE;
 506                         if (index == ar->def_txkey_index)
 507                                 keyusage |= TX_USAGE;
 508
 509                         ath6kl_wmi_addkey_cmd(ar->wmi,
 510                                               index,
 511                                               WEP_CRYPT,
 512                                               keyusage,
 513                                               ar->wep_key_list[index].key_len,
 514                                               NULL,
 515                                               ar->wep_key_list[index].key,
 516                                               KEY_OP_INIT_VAL, NULL,
 517                                               NO_SYNC_WMIFLAG);
 518                 }
 519         }
 520 }
 521
 522 void ath6kl_connect_ap_mode_bss(struct ath6kl *ar, u16 channel)
 523 {
 524         struct ath6kl_req_key *ik;
 525         int res;
 526         u8 key_rsc[ATH6KL_KEY_SEQ_LEN];
 527
 528         ik = &ar->ap_mode_bkey;
 529
 530         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel);
 531
 532         switch (ar->auth_mode) {
 533         case NONE_AUTH:
 534                 if (ar->prwise_crypto == WEP_CRYPT)
 535                         ath6kl_install_static_wep_keys(ar);
 536                 break;
 537         case WPA_PSK_AUTH:
 538         case WPA2_PSK_AUTH:
 539         case (WPA_PSK_AUTH | WPA2_PSK_AUTH):
 540                 if (!ik->valid)
 541                         break;
 542
 543                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for "
 544                            "the initial group key for AP mode\n");
 545                 memset(key_rsc, 0, sizeof(key_rsc));
 546                 res = ath6kl_wmi_addkey_cmd(
 547                         ar->wmi, ik->key_index, ik->key_type,
 548                         GROUP_USAGE, ik->key_len, key_rsc, ik->key,
 549                         KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG);
 550                 if (res) {
 551                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed "
 552                                    "addkey failed: %d\n", res);
 553                 }
 554                 break;
 555         }
 556
 557         ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
 558         set_bit(CONNECTED, &ar->flag);
 559         netif_carrier_on(ar->net_dev);
 560 }
 561
 562 void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr,
 563                                 u8 keymgmt, u8 ucipher, u8 auth,
 564                                 u8 assoc_req_len, u8 *assoc_info)
 565 {
 566         u8 *ies = NULL, *wpa_ie = NULL, *pos;
 567         size_t ies_len = 0;
 568         struct station_info sinfo;
 569
 570         ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid);
 571
 572         if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
 573                 struct ieee80211_mgmt *mgmt =
 574                         (struct ieee80211_mgmt *) assoc_info;
 575                 if (ieee80211_is_assoc_req(mgmt->frame_control) &&
 576                     assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
 577                     sizeof(mgmt->u.assoc_req)) {
 578                         ies = mgmt->u.assoc_req.variable;
 579                         ies_len = assoc_info + assoc_req_len - ies;
 580                 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
 581                            assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
 582                            + sizeof(mgmt->u.reassoc_req)) {
 583                         ies = mgmt->u.reassoc_req.variable;
 584                         ies_len = assoc_info + assoc_req_len - ies;
 585                 }
 586         }
 587
 588         pos = ies;
 589         while (pos && pos + 1 < ies + ies_len) {
 590                 if (pos + 2 + pos[1] > ies + ies_len)
 591                         break;
 592                 if (pos[0] == WLAN_EID_RSN)
 593                         wpa_ie = pos; /* RSN IE */
 594                 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
 595                          pos[1] >= 4 &&
 596                          pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
 597                         if (pos[5] == 0x01)
 598                                 wpa_ie = pos; /* WPA IE */
 599                         else if (pos[5] == 0x04) {
 600                                 wpa_ie = pos; /* WPS IE */
 601                                 break; /* overrides WPA/RSN IE */
 602                         }
 603                 }
 604                 pos += 2 + pos[1];
 605         }
 606
 607         ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie,
 608                            wpa_ie ? 2 + wpa_ie[1] : 0,
 609                            keymgmt, ucipher, auth);
 610
 611         /* send event to application */
 612         memset(&sinfo, 0, sizeof(sinfo));
 613
 614         /* TODO: sinfo.generation */
 615
 616         sinfo.assoc_req_ies = ies;
 617         sinfo.assoc_req_ies_len = ies_len;
 618         sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
 619
 620         cfg80211_new_sta(ar->net_dev, mac_addr, &sinfo, GFP_KERNEL);
 621
 622         netif_wake_queue(ar->net_dev);
 623 }
 624
 625 /* Functions for Tx credit handling */
 626 void ath6k_credit_init(struct htc_credit_state_info *cred_info,
 627                        struct list_head *ep_list,
 628                        int tot_credits)
 629 {
 630         struct htc_endpoint_credit_dist *cur_ep_dist;
 631         int count;
 632
 633         cred_info->cur_free_credits = tot_credits;
 634         cred_info->total_avail_credits = tot_credits;
 635
 636         list_for_each_entry(cur_ep_dist, ep_list, list) {
 637                 if (cur_ep_dist->endpoint == ENDPOINT_0)
 638                         continue;
 639
 640                 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg;
 641
 642                 if (tot_credits > 4)
 643                         if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) ||
 644                             (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) {
 645                                 ath6kl_deposit_credit_to_ep(cred_info,
 646                                                 cur_ep_dist,
 647                                                 cur_ep_dist->cred_min);
 648                                 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
 649                         }
 650
 651                 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) {
 652                         ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist,
 653                                                     cur_ep_dist->cred_min);
 654                         /*
 655                          * Control service is always marked active, it
 656                          * never goes inactive EVER.
 657                          */
 658                         cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
 659                 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC)
 660                         /* this is the lowest priority data endpoint */
 661                         cred_info->lowestpri_ep_dist = cur_ep_dist->list;
 662
 663                 /*
 664                  * Streams have to be created (explicit | implicit) for all
 665                  * kinds of traffic. BE endpoints are also inactive in the
 666                  * beginning. When BE traffic starts it creates implicit
 667                  * streams that redistributes credits.
 668                  *
 669                  * Note: all other endpoints have minimums set but are
 670                  * initially given NO credits. credits will be distributed
 671                  * as traffic activity demands
 672                  */
 673         }
 674
 675         WARN_ON(cred_info->cur_free_credits <= 0);
 676
 677         list_for_each_entry(cur_ep_dist, ep_list, list) {
 678                 if (cur_ep_dist->endpoint == ENDPOINT_0)
 679                         continue;
 680
 681                 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC)
 682                         cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg;
 683                 else {
 684                         /*
 685                          * For the remaining data endpoints, we assume that
 686                          * each cred_per_msg are the same. We use a simple
 687                          * calculation here, we take the remaining credits
 688                          * and determine how many max messages this can
 689                          * cover and then set each endpoint's normal value
 690                          * equal to 3/4 this amount.
 691                          */
 692                         count = (cred_info->cur_free_credits /
 693                                  cur_ep_dist->cred_per_msg)
 694                                 * cur_ep_dist->cred_per_msg;
 695                         count = (count * 3) >> 2;
 696                         count = max(count, cur_ep_dist->cred_per_msg);
 697                         cur_ep_dist->cred_norm = count;
 698
 699                 }
 700         }
 701 }
 702
 703 /* initialize and setup credit distribution */
 704 int ath6k_setup_credit_dist(void *htc_handle,
 705                             struct htc_credit_state_info *cred_info)
 706 {
 707         u16 servicepriority[5];
 708
 709         memset(cred_info, 0, sizeof(struct htc_credit_state_info));
 710
 711         servicepriority[0] = WMI_CONTROL_SVC;  /* highest */
 712         servicepriority[1] = WMI_DATA_VO_SVC;
 713         servicepriority[2] = WMI_DATA_VI_SVC;
 714         servicepriority[3] = WMI_DATA_BE_SVC;
 715         servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */
 716
 717         /* set priority list */
 718         ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5);
 719
 720         return 0;
 721 }
 722
 723 /* reduce an ep's credits back to a set limit */
 724 static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info,
 725                                  struct htc_endpoint_credit_dist  *ep_dist,
 726                                  int limit)
 727 {
 728         int credits;
 729
 730         ep_dist->cred_assngd = limit;
 731
 732         if (ep_dist->credits <= limit)
 733                 return;
 734
 735         credits = ep_dist->credits - limit;
 736         ep_dist->credits -= credits;
 737         cred_info->cur_free_credits += credits;
 738 }
 739
 740 static void ath6k_credit_update(struct htc_credit_state_info *cred_info,
 741                                 struct list_head *epdist_list)
 742 {
 743         struct htc_endpoint_credit_dist *cur_dist_list;
 744
 745         list_for_each_entry(cur_dist_list, epdist_list, list) {
 746                 if (cur_dist_list->endpoint == ENDPOINT_0)
 747                         continue;
 748
 749                 if (cur_dist_list->cred_to_dist > 0) {
 750                         cur_dist_list->credits +=
 751                                         cur_dist_list->cred_to_dist;
 752                         cur_dist_list->cred_to_dist = 0;
 753                         if (cur_dist_list->credits >
 754                             cur_dist_list->cred_assngd)
 755                                 ath6k_reduce_credits(cred_info,
 756                                                 cur_dist_list,
 757                                                 cur_dist_list->cred_assngd);
 758
 759                         if (cur_dist_list->credits >
 760                             cur_dist_list->cred_norm)
 761                                 ath6k_reduce_credits(cred_info, cur_dist_list,
 762                                                      cur_dist_list->cred_norm);
 763
 764                         if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) {
 765                                 if (cur_dist_list->txq_depth == 0)
 766                                         ath6k_reduce_credits(cred_info,
 767                                                              cur_dist_list, 0);
 768                         }
 769                 }
 770         }
 771 }
 772
 773 /*
 774  * HTC has an endpoint that needs credits, ep_dist is the endpoint in
 775  * question.
 776  */
 777 void ath6k_seek_credits(struct htc_credit_state_info *cred_info,
 778                         struct htc_endpoint_credit_dist *ep_dist)
 779 {
 780         struct htc_endpoint_credit_dist *curdist_list;
 781         int credits = 0;
 782         int need;
 783
 784         if (ep_dist->svc_id == WMI_CONTROL_SVC)
 785                 goto out;
 786
 787         if ((ep_dist->svc_id == WMI_DATA_VI_SVC) ||
 788             (ep_dist->svc_id == WMI_DATA_VO_SVC))
 789                 if ((ep_dist->cred_assngd >= ep_dist->cred_norm))
 790                         goto out;
 791
 792         /*
 793          * For all other services, we follow a simple algorithm of:
 794          *
 795          * 1. checking the free pool for credits
 796          * 2. checking lower priority endpoints for credits to take
 797          */
 798
 799         credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
 800
 801         if (credits >= ep_dist->seek_cred)
 802                 goto out;
 803
 804         /*
 805          * We don't have enough in the free pool, try taking away from
 806          * lower priority services The rule for taking away credits:
 807          *
 808          *   1. Only take from lower priority endpoints
 809          *   2. Only take what is allocated above the minimum (never
 810          *      starve an endpoint completely)
 811          *   3. Only take what you need.
 812          */
 813
 814         list_for_each_entry_reverse(curdist_list,
 815                                     &cred_info->lowestpri_ep_dist,
 816                                     list) {
 817                 if (curdist_list == ep_dist)
 818                         break;
 819
 820                 need = ep_dist->seek_cred - cred_info->cur_free_credits;
 821
 822                 if ((curdist_list->cred_assngd - need) >=
 823                      curdist_list->cred_min) {
 824                         /*
 825                          * The current one has been allocated more than
 826                          * it's minimum and it has enough credits assigned
 827                          * above it's minimum to fulfill our need try to
 828                          * take away just enough to fulfill our need.
 829                          */
 830                         ath6k_reduce_credits(cred_info, curdist_list,
 831                                         curdist_list->cred_assngd - need);
 832
 833                         if (cred_info->cur_free_credits >=
 834                             ep_dist->seek_cred)
 835                                 break;
 836                 }
 837
 838                 if (curdist_list->endpoint == ENDPOINT_0)
 839                         break;
 840         }
 841
 842         credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
 843
 844 out:
 845         /* did we find some credits? */
 846         if (credits)
 847                 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits);
 848
 849         ep_dist->seek_cred = 0;
 850 }
 851
 852 /* redistribute credits based on activity change */
 853 static void ath6k_redistribute_credits(struct htc_credit_state_info *info,
 854                                        struct list_head *ep_dist_list)
 855 {
 856         struct htc_endpoint_credit_dist *curdist_list;
 857
 858         list_for_each_entry(curdist_list, ep_dist_list, list) {
 859                 if (curdist_list->endpoint == ENDPOINT_0)
 860                         continue;
 861
 862                 if ((curdist_list->svc_id == WMI_DATA_BK_SVC)  ||
 863                     (curdist_list->svc_id == WMI_DATA_BE_SVC))
 864                         curdist_list->dist_flags |= HTC_EP_ACTIVE;
 865
 866                 if ((curdist_list->svc_id != WMI_CONTROL_SVC) &&
 867                     !(curdist_list->dist_flags & HTC_EP_ACTIVE)) {
 868                         if (curdist_list->txq_depth == 0)
 869                                 ath6k_reduce_credits(info,
 870                                                 curdist_list, 0);
 871                         else
 872                                 ath6k_reduce_credits(info,
 873                                                 curdist_list,
 874                                                 curdist_list->cred_min);
 875                 }
 876         }
 877 }
 878
 879 /*
 880  *
 881  * This function is invoked whenever endpoints require credit
 882  * distributions. A lock is held while this function is invoked, this
 883  * function shall NOT block. The ep_dist_list is a list of distribution
 884  * structures in prioritized order as defined by the call to the
 885  * htc_set_credit_dist() api.
 886  */
 887 void ath6k_credit_distribute(struct htc_credit_state_info *cred_info,
 888                              struct list_head *ep_dist_list,
 889                              enum htc_credit_dist_reason reason)
 890 {
 891         switch (reason) {
 892         case HTC_CREDIT_DIST_SEND_COMPLETE:
 893                 ath6k_credit_update(cred_info, ep_dist_list);
 894                 break;
 895         case HTC_CREDIT_DIST_ACTIVITY_CHANGE:
 896                 ath6k_redistribute_credits(cred_info, ep_dist_list);
 897                 break;
 898         default:
 899                 break;
 900         }
 901
 902         WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits);
 903         WARN_ON(cred_info->cur_free_credits < 0);
 904 }
 905
 906 void disconnect_timer_handler(unsigned long ptr)
 907 {
 908         struct net_device *dev = (struct net_device *)ptr;
 909         struct ath6kl *ar = ath6kl_priv(dev);
 910
 911         ath6kl_init_profile_info(ar);
 912         ath6kl_disconnect(ar);
 913 }
 914
 915 void ath6kl_disconnect(struct ath6kl *ar)
 916 {
 917         if (test_bit(CONNECTED, &ar->flag) ||
 918             test_bit(CONNECT_PEND, &ar->flag)) {
 919                 ath6kl_wmi_disconnect_cmd(ar->wmi);
 920                 /*
 921                  * Disconnect command is issued, clear the connect pending
 922                  * flag. The connected flag will be cleared in
 923                  * disconnect event notification.
 924                  */
 925                 clear_bit(CONNECT_PEND, &ar->flag);
 926         }
 927 }
 928
 929 void ath6kl_deep_sleep_enable(struct ath6kl *ar)
 930 {
 931         switch (ar->sme_state) {
 932         case SME_CONNECTING:
 933                 cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0,
 934                                         NULL, 0,
 935                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
 936                                         GFP_KERNEL);
 937                 break;
 938         case SME_CONNECTED:
 939         default:
 940                 /*
 941                  * FIXME: oddly enough smeState is in DISCONNECTED during
 942                  * suspend, why? Need to send disconnected event in that
 943                  * state.
 944                  */
 945                 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL);
 946                 break;
 947         }
 948
 949         if (test_bit(CONNECTED, &ar->flag) ||
 950             test_bit(CONNECT_PEND, &ar->flag))
 951                 ath6kl_wmi_disconnect_cmd(ar->wmi);
 952
 953         ar->sme_state = SME_DISCONNECTED;
 954
 955         /* disable scanning */
 956         if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0,
 957                                       0, 0) != 0)
 958                 printk(KERN_WARNING "ath6kl: failed to disable scan "
 959                        "during suspend\n");
 960
 961         ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
 962 }
 963
 964 /* WMI Event handlers */
 965
 966 static const char *get_hw_id_string(u32 id)
 967 {
 968         switch (id) {
 969         case AR6003_REV1_VERSION:
 970                 return "1.0";
 971         case AR6003_REV2_VERSION:
 972                 return "2.0";
 973         case AR6003_REV3_VERSION:
 974                 return "2.1.1";
 975         default:
 976                 return "unknown";
 977         }
 978 }
 979
 980 void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver)
 981 {
 982         struct ath6kl *ar = devt;
 983         struct net_device *dev = ar->net_dev;
 984
 985         memcpy(dev->dev_addr, datap, ETH_ALEN);
 986         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n",
 987                    __func__, dev->dev_addr);
 988
 989         ar->version.wlan_ver = sw_ver;
 990         ar->version.abi_ver = abi_ver;
 991
 992         snprintf(ar->wdev->wiphy->fw_version,
 993                  sizeof(ar->wdev->wiphy->fw_version),
 994                  "%u.%u.%u.%u",
 995                  (ar->version.wlan_ver & 0xf0000000) >> 28,
 996                  (ar->version.wlan_ver & 0x0f000000) >> 24,
 997                  (ar->version.wlan_ver & 0x00ff0000) >> 16,
 998                  (ar->version.wlan_ver & 0x0000ffff));
 999
1000         /* indicate to the waiting thread that the ready event was received */
1001         set_bit(WMI_READY, &ar->flag);
1002         wake_up(&ar->event_wq);
1003
1004         ath6kl_info("hw %s fw %s%s\n",
1005                     get_hw_id_string(ar->wdev->wiphy->hw_version),
1006                     ar->wdev->wiphy->fw_version,
1007                     test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
1008 }
1009
1010 void ath6kl_scan_complete_evt(struct ath6kl *ar, int status)
1011 {
1012         ath6kl_cfg80211_scan_complete_event(ar, status);
1013
1014         if (!ar->usr_bss_filter) {
1015                 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag);
1016                 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
1017         }
1018
1019         ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status);
1020 }
1021
1022 void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid,
1023                           u16 listen_int, u16 beacon_int,
1024                           enum network_type net_type, u8 beacon_ie_len,
1025                           u8 assoc_req_len, u8 assoc_resp_len,
1026                           u8 *assoc_info)
1027 {
1028         unsigned long flags;
1029
1030         ath6kl_cfg80211_connect_event(ar, channel, bssid,
1031                                       listen_int, beacon_int,
1032                                       net_type, beacon_ie_len,
1033                                       assoc_req_len, assoc_resp_len,
1034                                       assoc_info);
1035
1036         memcpy(ar->bssid, bssid, sizeof(ar->bssid));
1037         ar->bss_ch = channel;
1038
1039         if ((ar->nw_type == INFRA_NETWORK))
1040                 ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t,
1041                                               ar->listen_intvl_b);
1042
1043         netif_wake_queue(ar->net_dev);
1044
1045         /* Update connect & link status atomically */
1046         spin_lock_irqsave(&ar->lock, flags);
1047         set_bit(CONNECTED, &ar->flag);
1048         clear_bit(CONNECT_PEND, &ar->flag);
1049         netif_carrier_on(ar->net_dev);
1050         spin_unlock_irqrestore(&ar->lock, flags);
1051
1052         aggr_reset_state(ar->aggr_cntxt);
1053         ar->reconnect_flag = 0;
1054
1055         if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
1056                 memset(ar->node_map, 0, sizeof(ar->node_map));
1057                 ar->node_num = 0;
1058                 ar->next_ep_id = ENDPOINT_2;
1059         }
1060
1061         if (!ar->usr_bss_filter) {
1062                 set_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag);
1063                 ath6kl_wmi_bssfilter_cmd(ar->wmi, CURRENT_BSS_FILTER, 0);
1064         }
1065 }
1066
1067 void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast)
1068 {
1069         struct ath6kl_sta *sta;
1070         u8 tsc[6];
1071         /*
1072          * For AP case, keyid will have aid of STA which sent pkt with
1073          * MIC error. Use this aid to get MAC & send it to hostapd.
1074          */
1075         if (ar->nw_type == AP_NETWORK) {
1076                 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
1077                 if (!sta)
1078                         return;
1079
1080                 ath6kl_dbg(ATH6KL_DBG_TRC,
1081                            "ap tkip mic error received from aid=%d\n", keyid);
1082
1083                 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
1084                 cfg80211_michael_mic_failure(ar->net_dev, sta->mac,
1085                                              NL80211_KEYTYPE_PAIRWISE, keyid,
1086                                              tsc, GFP_KERNEL);
1087         } else
1088                 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast);
1089
1090 }
1091
1092 static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len)
1093 {
1094         struct wmi_target_stats *tgt_stats =
1095                 (struct wmi_target_stats *) ptr;
1096         struct target_stats *stats = &ar->target_stats;
1097         struct tkip_ccmp_stats *ccmp_stats;
1098         u8 ac;
1099
1100         if (len < sizeof(*tgt_stats))
1101                 return;
1102
1103         ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
1104
1105         stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
1106         stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
1107         stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
1108         stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
1109         stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
1110         stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
1111         stats->tx_bcast_pkt  += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
1112         stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
1113         stats->tx_rts_success_cnt +=
1114                 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
1115
1116         for (ac = 0; ac < WMM_NUM_AC; ac++)
1117                 stats->tx_pkt_per_ac[ac] +=
1118                         le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
1119
1120         stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
1121         stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
1122         stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
1123         stats->tx_mult_retry_cnt +=
1124                 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
1125         stats->tx_rts_fail_cnt +=
1126                 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
1127         stats->tx_ucast_rate =
1128             ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate));
1129
1130         stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
1131         stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
1132         stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
1133         stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
1134         stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
1135         stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
1136         stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
1137         stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
1138         stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
1139         stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
1140         stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
1141         stats->rx_key_cache_miss +=
1142                 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
1143         stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
1144         stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
1145         stats->rx_ucast_rate =
1146             ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate));
1147
1148         ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
1149
1150         stats->tkip_local_mic_fail +=
1151                 le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
1152         stats->tkip_cnter_measures_invoked +=
1153                 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
1154         stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
1155
1156         stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
1157         stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
1158
1159         stats->pwr_save_fail_cnt +=
1160                 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
1161         stats->noise_floor_calib =
1162                 a_sle32_to_cpu(tgt_stats->noise_floor_calib);
1163
1164         stats->cs_bmiss_cnt +=
1165                 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
1166         stats->cs_low_rssi_cnt +=
1167                 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
1168         stats->cs_connect_cnt +=
1169                 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
1170         stats->cs_discon_cnt +=
1171                 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
1172
1173         stats->cs_ave_beacon_rssi =
1174                 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
1175
1176         stats->cs_last_roam_msec =
1177                 tgt_stats->cserv_stats.cs_last_roam_msec;
1178         stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
1179         stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
1180
1181         stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
1182
1183         stats->wow_pkt_dropped +=
1184                 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
1185         stats->wow_host_pkt_wakeups +=
1186                 tgt_stats->wow_stats.wow_host_pkt_wakeups;
1187         stats->wow_host_evt_wakeups +=
1188                 tgt_stats->wow_stats.wow_host_evt_wakeups;
1189         stats->wow_evt_discarded +=
1190                 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
1191
1192         if (test_bit(STATS_UPDATE_PEND, &ar->flag)) {
1193                 clear_bit(STATS_UPDATE_PEND, &ar->flag);
1194                 wake_up(&ar->event_wq);
1195         }
1196 }
1197
1198 static void ath6kl_add_le32(__le32 *var, __le32 val)
1199 {
1200         *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
1201 }
1202
1203 void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len)
1204 {
1205         struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
1206         struct wmi_ap_mode_stat *ap = &ar->ap_stats;
1207         struct wmi_per_sta_stat *st_ap, *st_p;
1208         u8 ac;
1209
1210         if (ar->nw_type == AP_NETWORK) {
1211                 if (len < sizeof(*p))
1212                         return;
1213
1214                 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
1215                         st_ap = &ap->sta[ac];
1216                         st_p = &p->sta[ac];
1217
1218                         ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
1219                         ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
1220                         ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
1221                         ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
1222                         ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
1223                         ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
1224                         ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
1225                         ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
1226                 }
1227
1228         } else {
1229                 ath6kl_update_target_stats(ar, ptr, len);
1230         }
1231 }
1232
1233 void ath6kl_wakeup_event(void *dev)
1234 {
1235         struct ath6kl *ar = (struct ath6kl *) dev;
1236
1237         wake_up(&ar->event_wq);
1238 }
1239
1240 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
1241 {
1242         struct ath6kl *ar = (struct ath6kl *) devt;
1243
1244         ar->tx_pwr = tx_pwr;
1245         wake_up(&ar->event_wq);
1246 }
1247
1248 void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid)
1249 {
1250         struct ath6kl_sta *conn;
1251         struct sk_buff *skb;
1252         bool psq_empty = false;
1253
1254         conn = ath6kl_find_sta_by_aid(ar, aid);
1255
1256         if (!conn)
1257                 return;
1258         /*
1259          * Send out a packet queued on ps queue. When the ps queue
1260          * becomes empty update the PVB for this station.
1261          */
1262         spin_lock_bh(&conn->psq_lock);
1263         psq_empty  = skb_queue_empty(&conn->psq);
1264         spin_unlock_bh(&conn->psq_lock);
1265
1266         if (psq_empty)
1267                 /* TODO: Send out a NULL data frame */
1268                 return;
1269
1270         spin_lock_bh(&conn->psq_lock);
1271         skb = skb_dequeue(&conn->psq);
1272         spin_unlock_bh(&conn->psq_lock);
1273
1274         conn->sta_flags |= STA_PS_POLLED;
1275         ath6kl_data_tx(skb, ar->net_dev);
1276         conn->sta_flags &= ~STA_PS_POLLED;
1277
1278         spin_lock_bh(&conn->psq_lock);
1279         psq_empty  = skb_queue_empty(&conn->psq);
1280         spin_unlock_bh(&conn->psq_lock);
1281
1282         if (psq_empty)
1283                 ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0);
1284 }
1285
1286 void ath6kl_dtimexpiry_event(struct ath6kl *ar)
1287 {
1288         bool mcastq_empty = false;
1289         struct sk_buff *skb;
1290
1291         /*
1292          * If there are no associated STAs, ignore the DTIM expiry event.
1293          * There can be potential race conditions where the last associated
1294          * STA may disconnect & before the host could clear the 'Indicate
1295          * DTIM' request to the firmware, the firmware would have just
1296          * indicated a DTIM expiry event. The race is between 'clear DTIM
1297          * expiry cmd' going from the host to the firmware & the DTIM
1298          * expiry event happening from the firmware to the host.
1299          */
1300         if (!ar->sta_list_index)
1301                 return;
1302
1303         spin_lock_bh(&ar->mcastpsq_lock);
1304         mcastq_empty = skb_queue_empty(&ar->mcastpsq);
1305         spin_unlock_bh(&ar->mcastpsq_lock);
1306
1307         if (mcastq_empty)
1308                 return;
1309
1310         /* set the STA flag to dtim_expired for the frame to go out */
1311         set_bit(DTIM_EXPIRED, &ar->flag);
1312
1313         spin_lock_bh(&ar->mcastpsq_lock);
1314         while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
1315                 spin_unlock_bh(&ar->mcastpsq_lock);
1316
1317                 ath6kl_data_tx(skb, ar->net_dev);
1318
1319                 spin_lock_bh(&ar->mcastpsq_lock);
1320         }
1321         spin_unlock_bh(&ar->mcastpsq_lock);
1322
1323         clear_bit(DTIM_EXPIRED, &ar->flag);
1324
1325         /* clear the LSB of the BitMapCtl field of the TIM IE */
1326         ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
1327 }
1328
1329 void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid,
1330                              u8 assoc_resp_len, u8 *assoc_info,
1331                              u16 prot_reason_status)
1332 {
1333         unsigned long flags;
1334
1335         if (ar->nw_type == AP_NETWORK) {
1336                 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
1337                         return;
1338
1339                 /* if no more associated STAs, empty the mcast PS q */
1340                 if (ar->sta_list_index == 0) {
1341                         spin_lock_bh(&ar->mcastpsq_lock);
1342                         skb_queue_purge(&ar->mcastpsq);
1343                         spin_unlock_bh(&ar->mcastpsq_lock);
1344
1345                         /* clear the LSB of the TIM IE's BitMapCtl field */
1346                         if (test_bit(WMI_READY, &ar->flag))
1347                                 ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
1348                 }
1349
1350                 if (!is_broadcast_ether_addr(bssid)) {
1351                         /* send event to application */
1352                         cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL);
1353                 }
1354
1355                 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) {
1356                         memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list));
1357                         clear_bit(CONNECTED, &ar->flag);
1358                 }
1359                 return;
1360         }
1361
1362         ath6kl_cfg80211_disconnect_event(ar, reason, bssid,
1363                                        assoc_resp_len, assoc_info,
1364                                        prot_reason_status);
1365
1366         aggr_reset_state(ar->aggr_cntxt);
1367
1368         del_timer(&ar->disconnect_timer);
1369
1370         ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT,
1371                    "disconnect reason is %d\n", reason);
1372
1373         /*
1374          * If the event is due to disconnect cmd from the host, only they
1375          * the target would stop trying to connect. Under any other
1376          * condition, target would keep trying to connect.
1377          */
1378         if (reason == DISCONNECT_CMD) {
1379                 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
1380                         ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
1381         } else {
1382                 set_bit(CONNECT_PEND, &ar->flag);
1383                 if (((reason == ASSOC_FAILED) &&
1384                     (prot_reason_status == 0x11)) ||
1385                     ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0)
1386                      && (ar->reconnect_flag == 1))) {
1387                         set_bit(CONNECTED, &ar->flag);
1388                         return;
1389                 }
1390         }
1391
1392         /* update connect & link status atomically */
1393         spin_lock_irqsave(&ar->lock, flags);
1394         clear_bit(CONNECTED, &ar->flag);
1395         netif_carrier_off(ar->net_dev);
1396         spin_unlock_irqrestore(&ar->lock, flags);
1397
1398         if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1))
1399                 ar->reconnect_flag = 0;
1400
1401         if (reason != CSERV_DISCONNECT)
1402                 ar->user_key_ctrl = 0;
1403
1404         netif_stop_queue(ar->net_dev);
1405         memset(ar->bssid, 0, sizeof(ar->bssid));
1406         ar->bss_ch = 0;
1407
1408         ath6kl_tx_data_cleanup(ar);
1409 }
1410
1411 static int ath6kl_open(struct net_device *dev)
1412 {
1413         struct ath6kl *ar = ath6kl_priv(dev);
1414         unsigned long flags;
1415
1416         spin_lock_irqsave(&ar->lock, flags);
1417
1418         set_bit(WLAN_ENABLED, &ar->flag);
1419
1420         if (test_bit(CONNECTED, &ar->flag)) {
1421                 netif_carrier_on(dev);
1422                 netif_wake_queue(dev);
1423         } else
1424                 netif_carrier_off(dev);
1425
1426         spin_unlock_irqrestore(&ar->lock, flags);
1427
1428         return 0;
1429 }
1430
1431 static int ath6kl_close(struct net_device *dev)
1432 {
1433         struct ath6kl *ar = ath6kl_priv(dev);
1434
1435         netif_stop_queue(dev);
1436
1437         ath6kl_disconnect(ar);
1438
1439         if (test_bit(WMI_READY, &ar->flag)) {
1440                 if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0,
1441                                               0, 0, 0))
1442                         return -EIO;
1443
1444                 clear_bit(WLAN_ENABLED, &ar->flag);
1445         }
1446
1447         ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
1448
1449         return 0;
1450 }
1451
1452 static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
1453 {
1454         struct ath6kl *ar = ath6kl_priv(dev);
1455
1456         return &ar->net_stats;
1457 }
1458
1459 static struct net_device_ops ath6kl_netdev_ops = {
1460         .ndo_open               = ath6kl_open,
1461         .ndo_stop               = ath6kl_close,
1462         .ndo_start_xmit         = ath6kl_data_tx,
1463         .ndo_get_stats          = ath6kl_get_stats,
1464 };
1465
1466 void init_netdev(struct net_device *dev)
1467 {
1468         dev->netdev_ops = &ath6kl_netdev_ops;
1469         dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
1470
1471         dev->needed_headroom = ETH_HLEN;
1472         dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) +
1473                                 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH
1474                                 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES;
1475
1476         return;
1477 }