drivers/net/wireless/ti/wlcore/cmd.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009-2010 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/spi/spi.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ieee80211.h>
  29 #include <linux/slab.h>
  30
  31 #include "wlcore.h"
  32 #include "debug.h"
  33 #include "io.h"
  34 #include "acx.h"
  35 #include "wl12xx_80211.h"
  36 #include "cmd.h"
  37 #include "event.h"
  38 #include "tx.h"
  39 #include "hw_ops.h"
  40
  41 #define WL1271_CMD_FAST_POLL_COUNT       50
  42 #define WL1271_WAIT_EVENT_FAST_POLL_COUNT 20
  43
  44 /*
  45  * send command to firmware
  46  *
  47  * @wl: wl struct
  48  * @id: command id
  49  * @buf: buffer containing the command, must work with dma
  50  * @len: length of the buffer
  51  */
  52 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
  53                     size_t res_len)
  54 {
  55         struct wl1271_cmd_header *cmd;
  56         unsigned long timeout;
  57         u32 intr;
  58         int ret = 0;
  59         u16 status;
  60         u16 poll_count = 0;
  61
  62         cmd = buf;
  63         cmd->id = cpu_to_le16(id);
  64         cmd->status = 0;
  65
  66         WARN_ON(len % 4 != 0);
  67         WARN_ON(test_bit(WL1271_FLAG_IN_ELP, &wl->flags));
  68
  69         ret = wlcore_write(wl, wl->cmd_box_addr, buf, len, false);
  70         if (ret < 0)
  71                 goto fail;
  72
  73         /*
  74          * TODO: we just need this because one bit is in a different
  75          * place.  Is there any better way?
  76          */
  77         ret = wl->ops->trigger_cmd(wl, wl->cmd_box_addr, buf, len);
  78         if (ret < 0)
  79                 goto fail;
  80
  81         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  82
  83         ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
  84         if (ret < 0)
  85                 goto fail;
  86
  87         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  88                 if (time_after(jiffies, timeout)) {
  89                         wl1271_error("command complete timeout");
  90                         ret = -ETIMEDOUT;
  91                         goto fail;
  92                 }
  93
  94                 poll_count++;
  95                 if (poll_count < WL1271_CMD_FAST_POLL_COUNT)
  96                         udelay(10);
  97                 else
  98                         msleep(1);
  99
 100                 ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &intr);
 101                 if (ret < 0)
 102                         goto fail;
 103         }
 104
 105         /* read back the status code of the command */
 106         if (res_len == 0)
 107                 res_len = sizeof(struct wl1271_cmd_header);
 108
 109         ret = wlcore_read(wl, wl->cmd_box_addr, cmd, res_len, false);
 110         if (ret < 0)
 111                 goto fail;
 112
 113         status = le16_to_cpu(cmd->status);
 114         if (status != CMD_STATUS_SUCCESS) {
 115                 wl1271_error("command execute failure %d", status);
 116                 ret = -EIO;
 117                 goto fail;
 118         }
 119
 120         ret = wlcore_write_reg(wl, REG_INTERRUPT_ACK,
 121                                WL1271_ACX_INTR_CMD_COMPLETE);
 122         if (ret < 0)
 123                 goto fail;
 124
 125         return 0;
 126
 127 fail:
 128         wl12xx_queue_recovery_work(wl);
 129         return ret;
 130 }
 131
 132 /*
 133  * Poll the mailbox event field until any of the bits in the mask is set or a
 134  * timeout occurs (WL1271_EVENT_TIMEOUT in msecs)
 135  */
 136 static int wl1271_cmd_wait_for_event_or_timeout(struct wl1271 *wl,
 137                                                 u32 mask, bool *timeout)
 138 {
 139         u32 *events_vector;
 140         u32 event;
 141         unsigned long timeout_time;
 142         u16 poll_count = 0;
 143         int ret = 0;
 144
 145         *timeout = false;
 146
 147         events_vector = kmalloc(sizeof(*events_vector), GFP_KERNEL | GFP_DMA);
 148         if (!events_vector)
 149                 return -ENOMEM;
 150
 151         timeout_time = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 152
 153         do {
 154                 if (time_after(jiffies, timeout_time)) {
 155                         wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
 156                                      (int)mask);
 157                         *timeout = true;
 158                         goto out;
 159                 }
 160
 161                 poll_count++;
 162                 if (poll_count < WL1271_WAIT_EVENT_FAST_POLL_COUNT)
 163                         usleep_range(50, 51);
 164                 else
 165                         usleep_range(1000, 5000);
 166
 167                 /* read from both event fields */
 168                 ret = wlcore_read(wl, wl->mbox_ptr[0], events_vector,
 169                                   sizeof(*events_vector), false);
 170                 if (ret < 0)
 171                         goto out;
 172
 173                 event = *events_vector & mask;
 174
 175                 ret = wlcore_read(wl, wl->mbox_ptr[1], events_vector,
 176                                   sizeof(*events_vector), false);
 177                 if (ret < 0)
 178                         goto out;
 179
 180                 event |= *events_vector & mask;
 181         } while (!event);
 182
 183 out:
 184         kfree(events_vector);
 185         return ret;
 186 }
 187
 188 static int wl1271_cmd_wait_for_event(struct wl1271 *wl, u32 mask)
 189 {
 190         int ret;
 191         bool timeout = false;
 192
 193         ret = wl1271_cmd_wait_for_event_or_timeout(wl, mask, &timeout);
 194         if (ret != 0 || timeout) {
 195                 wl12xx_queue_recovery_work(wl);
 196                 return ret;
 197         }
 198
 199         return 0;
 200 }
 201
 202 int wl12xx_cmd_role_enable(struct wl1271 *wl, u8 *addr, u8 role_type,
 203                            u8 *role_id)
 204 {
 205         struct wl12xx_cmd_role_enable *cmd;
 206         int ret;
 207
 208         wl1271_debug(DEBUG_CMD, "cmd role enable");
 209
 210         if (WARN_ON(*role_id != WL12XX_INVALID_ROLE_ID))
 211                 return -EBUSY;
 212
 213         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 214         if (!cmd) {
 215                 ret = -ENOMEM;
 216                 goto out;
 217         }
 218
 219         /* get role id */
 220         cmd->role_id = find_first_zero_bit(wl->roles_map, WL12XX_MAX_ROLES);
 221         if (cmd->role_id >= WL12XX_MAX_ROLES) {
 222                 ret = -EBUSY;
 223                 goto out_free;
 224         }
 225
 226         memcpy(cmd->mac_address, addr, ETH_ALEN);
 227         cmd->role_type = role_type;
 228
 229         ret = wl1271_cmd_send(wl, CMD_ROLE_ENABLE, cmd, sizeof(*cmd), 0);
 230         if (ret < 0) {
 231                 wl1271_error("failed to initiate cmd role enable");
 232                 goto out_free;
 233         }
 234
 235         __set_bit(cmd->role_id, wl->roles_map);
 236         *role_id = cmd->role_id;
 237
 238 out_free:
 239         kfree(cmd);
 240
 241 out:
 242         return ret;
 243 }
 244
 245 int wl12xx_cmd_role_disable(struct wl1271 *wl, u8 *role_id)
 246 {
 247         struct wl12xx_cmd_role_disable *cmd;
 248         int ret;
 249
 250         wl1271_debug(DEBUG_CMD, "cmd role disable");
 251
 252         if (WARN_ON(*role_id == WL12XX_INVALID_ROLE_ID))
 253                 return -ENOENT;
 254
 255         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 256         if (!cmd) {
 257                 ret = -ENOMEM;
 258                 goto out;
 259         }
 260         cmd->role_id = *role_id;
 261
 262         ret = wl1271_cmd_send(wl, CMD_ROLE_DISABLE, cmd, sizeof(*cmd), 0);
 263         if (ret < 0) {
 264                 wl1271_error("failed to initiate cmd role disable");
 265                 goto out_free;
 266         }
 267
 268         __clear_bit(*role_id, wl->roles_map);
 269         *role_id = WL12XX_INVALID_ROLE_ID;
 270
 271 out_free:
 272         kfree(cmd);
 273
 274 out:
 275         return ret;
 276 }
 277
 278 int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 279 {
 280         unsigned long flags;
 281         u8 link = find_first_zero_bit(wl->links_map, WL12XX_MAX_LINKS);
 282         if (link >= WL12XX_MAX_LINKS)
 283                 return -EBUSY;
 284
 285         /* these bits are used by op_tx */
 286         spin_lock_irqsave(&wl->wl_lock, flags);
 287         __set_bit(link, wl->links_map);
 288         __set_bit(link, wlvif->links_map);
 289         spin_unlock_irqrestore(&wl->wl_lock, flags);
 290         *hlid = link;
 291         return 0;
 292 }
 293
 294 void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
 295 {
 296         unsigned long flags;
 297
 298         if (*hlid == WL12XX_INVALID_LINK_ID)
 299                 return;
 300
 301         /* these bits are used by op_tx */
 302         spin_lock_irqsave(&wl->wl_lock, flags);
 303         __clear_bit(*hlid, wl->links_map);
 304         __clear_bit(*hlid, wlvif->links_map);
 305         spin_unlock_irqrestore(&wl->wl_lock, flags);
 306
 307         /*
 308          * At this point op_tx() will not add more packets to the queues. We
 309          * can purge them.
 310          */
 311         wl1271_tx_reset_link_queues(wl, *hlid);
 312
 313         *hlid = WL12XX_INVALID_LINK_ID;
 314 }
 315
 316 static int wl12xx_get_new_session_id(struct wl1271 *wl,
 317                                      struct wl12xx_vif *wlvif)
 318 {
 319         if (wlvif->session_counter >= SESSION_COUNTER_MAX)
 320                 wlvif->session_counter = 0;
 321
 322         wlvif->session_counter++;
 323
 324         return wlvif->session_counter;
 325 }
 326
 327 static u8 wlcore_get_native_channel_type(u8 nl_channel_type)
 328 {
 329         switch (nl_channel_type) {
 330         case NL80211_CHAN_NO_HT:
 331                 return WLCORE_CHAN_NO_HT;
 332         case NL80211_CHAN_HT20:
 333                 return WLCORE_CHAN_HT20;
 334         case NL80211_CHAN_HT40MINUS:
 335                 return WLCORE_CHAN_HT40MINUS;
 336         case NL80211_CHAN_HT40PLUS:
 337                 return WLCORE_CHAN_HT40PLUS;
 338         default:
 339                 WARN_ON(1);
 340                 return WLCORE_CHAN_NO_HT;
 341         }
 342 }
 343
 344 static int wl12xx_cmd_role_start_dev(struct wl1271 *wl,
 345                                      struct wl12xx_vif *wlvif)
 346 {
 347         struct wl12xx_cmd_role_start *cmd;
 348         int ret;
 349
 350         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 351         if (!cmd) {
 352                 ret = -ENOMEM;
 353                 goto out;
 354         }
 355
 356         wl1271_debug(DEBUG_CMD, "cmd role start dev %d", wlvif->dev_role_id);
 357
 358         cmd->role_id = wlvif->dev_role_id;
 359         if (wlvif->band == IEEE80211_BAND_5GHZ)
 360                 cmd->band = WLCORE_BAND_5GHZ;
 361         cmd->channel = wlvif->channel;
 362
 363         if (wlvif->dev_hlid == WL12XX_INVALID_LINK_ID) {
 364                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->dev_hlid);
 365                 if (ret)
 366                         goto out_free;
 367         }
 368         cmd->device.hlid = wlvif->dev_hlid;
 369         cmd->device.session = wl12xx_get_new_session_id(wl, wlvif);
 370
 371         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d",
 372                      cmd->role_id, cmd->device.hlid, cmd->device.session);
 373
 374         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 375         if (ret < 0) {
 376                 wl1271_error("failed to initiate cmd role enable");
 377                 goto err_hlid;
 378         }
 379
 380         goto out_free;
 381
 382 err_hlid:
 383         /* clear links on error */
 384         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 385
 386 out_free:
 387         kfree(cmd);
 388
 389 out:
 390         return ret;
 391 }
 392
 393 static int wl12xx_cmd_role_stop_dev(struct wl1271 *wl,
 394                                     struct wl12xx_vif *wlvif)
 395 {
 396         struct wl12xx_cmd_role_stop *cmd;
 397         int ret;
 398
 399         if (WARN_ON(wlvif->dev_hlid == WL12XX_INVALID_LINK_ID))
 400                 return -EINVAL;
 401
 402         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 403         if (!cmd) {
 404                 ret = -ENOMEM;
 405                 goto out;
 406         }
 407
 408         wl1271_debug(DEBUG_CMD, "cmd role stop dev");
 409
 410         cmd->role_id = wlvif->dev_role_id;
 411         cmd->disc_type = DISCONNECT_IMMEDIATE;
 412         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 413
 414         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 415         if (ret < 0) {
 416                 wl1271_error("failed to initiate cmd role stop");
 417                 goto out_free;
 418         }
 419
 420         ret = wl1271_cmd_wait_for_event(wl, ROLE_STOP_COMPLETE_EVENT_ID);
 421         if (ret < 0) {
 422                 wl1271_error("cmd role stop dev event completion error");
 423                 goto out_free;
 424         }
 425
 426         wl12xx_free_link(wl, wlvif, &wlvif->dev_hlid);
 427
 428 out_free:
 429         kfree(cmd);
 430
 431 out:
 432         return ret;
 433 }
 434
 435 int wl12xx_cmd_role_start_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 436 {
 437         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 438         struct wl12xx_cmd_role_start *cmd;
 439         int ret;
 440
 441         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 442         if (!cmd) {
 443                 ret = -ENOMEM;
 444                 goto out;
 445         }
 446
 447         wl1271_debug(DEBUG_CMD, "cmd role start sta %d", wlvif->role_id);
 448
 449         cmd->role_id = wlvif->role_id;
 450         if (wlvif->band == IEEE80211_BAND_5GHZ)
 451                 cmd->band = WLCORE_BAND_5GHZ;
 452         cmd->channel = wlvif->channel;
 453         cmd->sta.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 454         cmd->sta.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 455         cmd->sta.ssid_type = WL12XX_SSID_TYPE_ANY;
 456         cmd->sta.ssid_len = wlvif->ssid_len;
 457         memcpy(cmd->sta.ssid, wlvif->ssid, wlvif->ssid_len);
 458         memcpy(cmd->sta.bssid, vif->bss_conf.bssid, ETH_ALEN);
 459         cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set);
 460         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 461
 462         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 463                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 464                 if (ret)
 465                         goto out_free;
 466         }
 467         cmd->sta.hlid = wlvif->sta.hlid;
 468         cmd->sta.session = wl12xx_get_new_session_id(wl, wlvif);
 469         cmd->sta.remote_rates = cpu_to_le32(wlvif->rate_set);
 470
 471         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 472                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 473                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 474                      wlvif->basic_rate_set, wlvif->rate_set);
 475
 476         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 477         if (ret < 0) {
 478                 wl1271_error("failed to initiate cmd role start sta");
 479                 goto err_hlid;
 480         }
 481
 482         goto out_free;
 483
 484 err_hlid:
 485         /* clear links on error. */
 486         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 487
 488 out_free:
 489         kfree(cmd);
 490
 491 out:
 492         return ret;
 493 }
 494
 495 /* use this function to stop ibss as well */
 496 int wl12xx_cmd_role_stop_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 497 {
 498         struct wl12xx_cmd_role_stop *cmd;
 499         int ret;
 500         bool timeout = false;
 501
 502         if (WARN_ON(wlvif->sta.hlid == WL12XX_INVALID_LINK_ID))
 503                 return -EINVAL;
 504
 505         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 506         if (!cmd) {
 507                 ret = -ENOMEM;
 508                 goto out;
 509         }
 510
 511         wl1271_debug(DEBUG_CMD, "cmd role stop sta %d", wlvif->role_id);
 512
 513         cmd->role_id = wlvif->role_id;
 514         cmd->disc_type = DISCONNECT_IMMEDIATE;
 515         cmd->reason = cpu_to_le16(WLAN_REASON_UNSPECIFIED);
 516
 517         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 518         if (ret < 0) {
 519                 wl1271_error("failed to initiate cmd role stop sta");
 520                 goto out_free;
 521         }
 522
 523         /*
 524          * Sometimes the firmware doesn't send this event, so we just
 525          * time out without failing.  Queue recovery for other
 526          * failures.
 527          */
 528         ret = wl1271_cmd_wait_for_event_or_timeout(wl,
 529                                                    ROLE_STOP_COMPLETE_EVENT_ID,
 530                                                    &timeout);
 531         if (ret)
 532                 wl12xx_queue_recovery_work(wl);
 533
 534         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 535
 536 out_free:
 537         kfree(cmd);
 538
 539 out:
 540         return ret;
 541 }
 542
 543 int wl12xx_cmd_role_start_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 544 {
 545         struct wl12xx_cmd_role_start *cmd;
 546         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 547         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 548         u32 supported_rates;
 549         int ret;
 550
 551         wl1271_debug(DEBUG_CMD, "cmd role start ap %d", wlvif->role_id);
 552
 553         /* trying to use hidden SSID with an old hostapd version */
 554         if (wlvif->ssid_len == 0 && !bss_conf->hidden_ssid) {
 555                 wl1271_error("got a null SSID from beacon/bss");
 556                 ret = -EINVAL;
 557                 goto out;
 558         }
 559
 560         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 561         if (!cmd) {
 562                 ret = -ENOMEM;
 563                 goto out;
 564         }
 565
 566         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.global_hlid);
 567         if (ret < 0)
 568                 goto out_free;
 569
 570         ret = wl12xx_allocate_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 571         if (ret < 0)
 572                 goto out_free_global;
 573
 574         cmd->role_id = wlvif->role_id;
 575         cmd->ap.aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
 576         cmd->ap.bss_index = WL1271_AP_BSS_INDEX;
 577         cmd->ap.global_hlid = wlvif->ap.global_hlid;
 578         cmd->ap.broadcast_hlid = wlvif->ap.bcast_hlid;
 579         cmd->ap.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 580         cmd->ap.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 581         cmd->ap.dtim_interval = bss_conf->dtim_period;
 582         cmd->ap.beacon_expiry = WL1271_AP_DEF_BEACON_EXP;
 583         /* FIXME: Change when adding DFS */
 584         cmd->ap.reset_tsf = 1;  /* By default reset AP TSF */
 585         cmd->channel = wlvif->channel;
 586         cmd->channel_type = wlcore_get_native_channel_type(wlvif->channel_type);
 587
 588         if (!bss_conf->hidden_ssid) {
 589                 /* take the SSID from the beacon for backward compatibility */
 590                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_PUBLIC;
 591                 cmd->ap.ssid_len = wlvif->ssid_len;
 592                 memcpy(cmd->ap.ssid, wlvif->ssid, wlvif->ssid_len);
 593         } else {
 594                 cmd->ap.ssid_type = WL12XX_SSID_TYPE_HIDDEN;
 595                 cmd->ap.ssid_len = bss_conf->ssid_len;
 596                 memcpy(cmd->ap.ssid, bss_conf->ssid, bss_conf->ssid_len);
 597         }
 598
 599         supported_rates = CONF_TX_AP_ENABLED_RATES | CONF_TX_MCS_RATES |
 600                 wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);
 601
 602         wl1271_debug(DEBUG_CMD, "cmd role start ap with supported_rates 0x%08x",
 603                      supported_rates);
 604
 605         cmd->ap.local_rates = cpu_to_le32(supported_rates);
 606
 607         switch (wlvif->band) {
 608         case IEEE80211_BAND_2GHZ:
 609                 cmd->band = WLCORE_BAND_2_4GHZ;
 610                 break;
 611         case IEEE80211_BAND_5GHZ:
 612                 cmd->band = WLCORE_BAND_5GHZ;
 613                 break;
 614         default:
 615                 wl1271_warning("ap start - unknown band: %d", (int)wlvif->band);
 616                 cmd->band = WLCORE_BAND_2_4GHZ;
 617                 break;
 618         }
 619
 620         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 621         if (ret < 0) {
 622                 wl1271_error("failed to initiate cmd role start ap");
 623                 goto out_free_bcast;
 624         }
 625
 626         goto out_free;
 627
 628 out_free_bcast:
 629         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 630
 631 out_free_global:
 632         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 633
 634 out_free:
 635         kfree(cmd);
 636
 637 out:
 638         return ret;
 639 }
 640
 641 int wl12xx_cmd_role_stop_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 642 {
 643         struct wl12xx_cmd_role_stop *cmd;
 644         int ret;
 645
 646         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 647         if (!cmd) {
 648                 ret = -ENOMEM;
 649                 goto out;
 650         }
 651
 652         wl1271_debug(DEBUG_CMD, "cmd role stop ap %d", wlvif->role_id);
 653
 654         cmd->role_id = wlvif->role_id;
 655
 656         ret = wl1271_cmd_send(wl, CMD_ROLE_STOP, cmd, sizeof(*cmd), 0);
 657         if (ret < 0) {
 658                 wl1271_error("failed to initiate cmd role stop ap");
 659                 goto out_free;
 660         }
 661
 662         wl12xx_free_link(wl, wlvif, &wlvif->ap.bcast_hlid);
 663         wl12xx_free_link(wl, wlvif, &wlvif->ap.global_hlid);
 664
 665 out_free:
 666         kfree(cmd);
 667
 668 out:
 669         return ret;
 670 }
 671
 672 int wl12xx_cmd_role_start_ibss(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 673 {
 674         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 675         struct wl12xx_cmd_role_start *cmd;
 676         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 677         int ret;
 678
 679         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 680         if (!cmd) {
 681                 ret = -ENOMEM;
 682                 goto out;
 683         }
 684
 685         wl1271_debug(DEBUG_CMD, "cmd role start ibss %d", wlvif->role_id);
 686
 687         cmd->role_id = wlvif->role_id;
 688         if (wlvif->band == IEEE80211_BAND_5GHZ)
 689                 cmd->band = WLCORE_BAND_5GHZ;
 690         cmd->channel = wlvif->channel;
 691         cmd->ibss.basic_rate_set = cpu_to_le32(wlvif->basic_rate_set);
 692         cmd->ibss.beacon_interval = cpu_to_le16(wlvif->beacon_int);
 693         cmd->ibss.dtim_interval = bss_conf->dtim_period;
 694         cmd->ibss.ssid_type = WL12XX_SSID_TYPE_ANY;
 695         cmd->ibss.ssid_len = wlvif->ssid_len;
 696         memcpy(cmd->ibss.ssid, wlvif->ssid, wlvif->ssid_len);
 697         memcpy(cmd->ibss.bssid, vif->bss_conf.bssid, ETH_ALEN);
 698         cmd->sta.local_rates = cpu_to_le32(wlvif->rate_set);
 699
 700         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID) {
 701                 ret = wl12xx_allocate_link(wl, wlvif, &wlvif->sta.hlid);
 702                 if (ret)
 703                         goto out_free;
 704         }
 705         cmd->ibss.hlid = wlvif->sta.hlid;
 706         cmd->ibss.remote_rates = cpu_to_le32(wlvif->rate_set);
 707
 708         wl1271_debug(DEBUG_CMD, "role start: roleid=%d, hlid=%d, session=%d "
 709                      "basic_rate_set: 0x%x, remote_rates: 0x%x",
 710                      wlvif->role_id, cmd->sta.hlid, cmd->sta.session,
 711                      wlvif->basic_rate_set, wlvif->rate_set);
 712
 713         wl1271_debug(DEBUG_CMD, "vif->bss_conf.bssid = %pM",
 714                      vif->bss_conf.bssid);
 715
 716         ret = wl1271_cmd_send(wl, CMD_ROLE_START, cmd, sizeof(*cmd), 0);
 717         if (ret < 0) {
 718                 wl1271_error("failed to initiate cmd role enable");
 719                 goto err_hlid;
 720         }
 721
 722         goto out_free;
 723
 724 err_hlid:
 725         /* clear links on error. */
 726         wl12xx_free_link(wl, wlvif, &wlvif->sta.hlid);
 727
 728 out_free:
 729         kfree(cmd);
 730
 731 out:
 732         return ret;
 733 }
 734
 735
 736 /**
 737  * send test command to firmware
 738  *
 739  * @wl: wl struct
 740  * @buf: buffer containing the command, with all headers, must work with dma
 741  * @len: length of the buffer
 742  * @answer: is answer needed
 743  */
 744 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 745 {
 746         int ret;
 747         size_t res_len = 0;
 748
 749         wl1271_debug(DEBUG_CMD, "cmd test");
 750
 751         if (answer)
 752                 res_len = buf_len;
 753
 754         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 755
 756         if (ret < 0) {
 757                 wl1271_warning("TEST command failed");
 758                 return ret;
 759         }
 760
 761         return ret;
 762 }
 763 EXPORT_SYMBOL_GPL(wl1271_cmd_test);
 764
 765 /**
 766  * read acx from firmware
 767  *
 768  * @wl: wl struct
 769  * @id: acx id
 770  * @buf: buffer for the response, including all headers, must work with dma
 771  * @len: length of buf
 772  */
 773 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 774 {
 775         struct acx_header *acx = buf;
 776         int ret;
 777
 778         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 779
 780         acx->id = cpu_to_le16(id);
 781
 782         /* payload length, does not include any headers */
 783         acx->len = cpu_to_le16(len - sizeof(*acx));
 784
 785         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 786         if (ret < 0)
 787                 wl1271_error("INTERROGATE command failed");
 788
 789         return ret;
 790 }
 791
 792 /**
 793  * write acx value to firmware
 794  *
 795  * @wl: wl struct
 796  * @id: acx id
 797  * @buf: buffer containing acx, including all headers, must work with dma
 798  * @len: length of buf
 799  */
 800 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 801 {
 802         struct acx_header *acx = buf;
 803         int ret;
 804
 805         wl1271_debug(DEBUG_CMD, "cmd configure (%d)", id);
 806
 807         acx->id = cpu_to_le16(id);
 808
 809         /* payload length, does not include any headers */
 810         acx->len = cpu_to_le16(len - sizeof(*acx));
 811
 812         ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 813         if (ret < 0) {
 814                 wl1271_warning("CONFIGURE command NOK");
 815                 return ret;
 816         }
 817
 818         return 0;
 819 }
 820 EXPORT_SYMBOL_GPL(wl1271_cmd_configure);
 821
 822 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 823 {
 824         struct cmd_enabledisable_path *cmd;
 825         int ret;
 826         u16 cmd_rx, cmd_tx;
 827
 828         wl1271_debug(DEBUG_CMD, "cmd data path");
 829
 830         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 831         if (!cmd) {
 832                 ret = -ENOMEM;
 833                 goto out;
 834         }
 835
 836         /* the channel here is only used for calibration, so hardcoded to 1 */
 837         cmd->channel = 1;
 838
 839         if (enable) {
 840                 cmd_rx = CMD_ENABLE_RX;
 841                 cmd_tx = CMD_ENABLE_TX;
 842         } else {
 843                 cmd_rx = CMD_DISABLE_RX;
 844                 cmd_tx = CMD_DISABLE_TX;
 845         }
 846
 847         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 848         if (ret < 0) {
 849                 wl1271_error("rx %s cmd for channel %d failed",
 850                              enable ? "start" : "stop", cmd->channel);
 851                 goto out;
 852         }
 853
 854         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 855                      enable ? "start" : "stop", cmd->channel);
 856
 857         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 858         if (ret < 0) {
 859                 wl1271_error("tx %s cmd for channel %d failed",
 860                              enable ? "start" : "stop", cmd->channel);
 861                 goto out;
 862         }
 863
 864         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 865                      enable ? "start" : "stop", cmd->channel);
 866
 867 out:
 868         kfree(cmd);
 869         return ret;
 870 }
 871 EXPORT_SYMBOL_GPL(wl1271_cmd_data_path);
 872
 873 int wl1271_cmd_ps_mode(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 874                        u8 ps_mode, u16 auto_ps_timeout)
 875 {
 876         struct wl1271_cmd_ps_params *ps_params = NULL;
 877         int ret = 0;
 878
 879         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 880
 881         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 882         if (!ps_params) {
 883                 ret = -ENOMEM;
 884                 goto out;
 885         }
 886
 887         ps_params->role_id = wlvif->role_id;
 888         ps_params->ps_mode = ps_mode;
 889         ps_params->auto_ps_timeout = auto_ps_timeout;
 890
 891         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 892                               sizeof(*ps_params), 0);
 893         if (ret < 0) {
 894                 wl1271_error("cmd set_ps_mode failed");
 895                 goto out;
 896         }
 897
 898 out:
 899         kfree(ps_params);
 900         return ret;
 901 }
 902
 903 int wl1271_cmd_template_set(struct wl1271 *wl, u8 role_id,
 904                             u16 template_id, void *buf, size_t buf_len,
 905                             int index, u32 rates)
 906 {
 907         struct wl1271_cmd_template_set *cmd;
 908         int ret = 0;
 909
 910         wl1271_debug(DEBUG_CMD, "cmd template_set %d (role %d)",
 911                      template_id, role_id);
 912
 913         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
 914         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
 915
 916         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 917         if (!cmd) {
 918                 ret = -ENOMEM;
 919                 goto out;
 920         }
 921
 922         /* during initialization wlvif is NULL */
 923         cmd->role_id = role_id;
 924         cmd->len = cpu_to_le16(buf_len);
 925         cmd->template_type = template_id;
 926         cmd->enabled_rates = cpu_to_le32(rates);
 927         cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit;
 928         cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit;
 929         cmd->index = index;
 930
 931         if (buf)
 932                 memcpy(cmd->template_data, buf, buf_len);
 933
 934         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
 935         if (ret < 0) {
 936                 wl1271_warning("cmd set_template failed: %d", ret);
 937                 goto out_free;
 938         }
 939
 940 out_free:
 941         kfree(cmd);
 942
 943 out:
 944         return ret;
 945 }
 946
 947 int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 948 {
 949         struct sk_buff *skb = NULL;
 950         int size;
 951         void *ptr;
 952         int ret = -ENOMEM;
 953
 954
 955         if (wlvif->bss_type == BSS_TYPE_IBSS) {
 956                 size = sizeof(struct wl12xx_null_data_template);
 957                 ptr = NULL;
 958         } else {
 959                 skb = ieee80211_nullfunc_get(wl->hw,
 960                                              wl12xx_wlvif_to_vif(wlvif));
 961                 if (!skb)
 962                         goto out;
 963                 size = skb->len;
 964                 ptr = skb->data;
 965         }
 966
 967         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
 968                                       CMD_TEMPL_NULL_DATA, ptr, size, 0,
 969                                       wlvif->basic_rate);
 970
 971 out:
 972         dev_kfree_skb(skb);
 973         if (ret)
 974                 wl1271_warning("cmd buld null data failed %d", ret);
 975
 976         return ret;
 977
 978 }
 979
 980 int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
 981                                    struct wl12xx_vif *wlvif)
 982 {
 983         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 984         struct sk_buff *skb = NULL;
 985         int ret = -ENOMEM;
 986
 987         skb = ieee80211_nullfunc_get(wl->hw, vif);
 988         if (!skb)
 989                 goto out;
 990
 991         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,
 992                                       skb->data, skb->len,
 993                                       CMD_TEMPL_KLV_IDX_NULL_DATA,
 994                                       wlvif->basic_rate);
 995
 996 out:
 997         dev_kfree_skb(skb);
 998         if (ret)
 999                 wl1271_warning("cmd build klv null data failed %d", ret);
1000
1001         return ret;
1002
1003 }
1004
1005 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1006                              u16 aid)
1007 {
1008         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1009         struct sk_buff *skb;
1010         int ret = 0;
1011
1012         skb = ieee80211_pspoll_get(wl->hw, vif);
1013         if (!skb)
1014                 goto out;
1015
1016         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1017                                       CMD_TEMPL_PS_POLL, skb->data,
1018                                       skb->len, 0, wlvif->basic_rate_set);
1019
1020 out:
1021         dev_kfree_skb(skb);
1022         return ret;
1023 }
1024
1025 int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1026                                u8 role_id, u8 band,
1027                                const u8 *ssid, size_t ssid_len,
1028                                const u8 *ie, size_t ie_len, bool sched_scan)
1029 {
1030         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1031         struct sk_buff *skb;
1032         int ret;
1033         u32 rate;
1034         u16 template_id_2_4 = CMD_TEMPL_CFG_PROBE_REQ_2_4;
1035         u16 template_id_5 = CMD_TEMPL_CFG_PROBE_REQ_5;
1036
1037         skb = ieee80211_probereq_get(wl->hw, vif, ssid, ssid_len,
1038                                      ie, ie_len);
1039         if (!skb) {
1040                 ret = -ENOMEM;
1041                 goto out;
1042         }
1043
1044         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", skb->data, skb->len);
1045
1046         if (!sched_scan &&
1047             (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {
1048                 template_id_2_4 = CMD_TEMPL_APP_PROBE_REQ_2_4;
1049                 template_id_5 = CMD_TEMPL_APP_PROBE_REQ_5;
1050         }
1051
1052         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
1053         if (band == IEEE80211_BAND_2GHZ)
1054                 ret = wl1271_cmd_template_set(wl, role_id,
1055                                               template_id_2_4,
1056                                               skb->data, skb->len, 0, rate);
1057         else
1058                 ret = wl1271_cmd_template_set(wl, role_id,
1059                                               template_id_5,
1060                                               skb->data, skb->len, 0, rate);
1061
1062 out:
1063         dev_kfree_skb(skb);
1064         return ret;
1065 }
1066
1067 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
1068                                               struct wl12xx_vif *wlvif,
1069                                               struct sk_buff *skb)
1070 {
1071         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1072         int ret;
1073         u32 rate;
1074
1075         if (!skb)
1076                 skb = ieee80211_ap_probereq_get(wl->hw, vif);
1077         if (!skb)
1078                 goto out;
1079
1080         wl1271_dump(DEBUG_SCAN, "AP PROBE REQ: ", skb->data, skb->len);
1081
1082         rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);
1083         if (wlvif->band == IEEE80211_BAND_2GHZ)
1084                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1085                                               CMD_TEMPL_CFG_PROBE_REQ_2_4,
1086                                               skb->data, skb->len, 0, rate);
1087         else
1088                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
1089                                               CMD_TEMPL_CFG_PROBE_REQ_5,
1090                                               skb->data, skb->len, 0, rate);
1091
1092         if (ret < 0)
1093                 wl1271_error("Unable to set ap probe request template.");
1094
1095 out:
1096         return skb;
1097 }
1098
1099 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1100 {
1101         int ret, extra = 0;
1102         u16 fc;
1103         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
1104         struct sk_buff *skb;
1105         struct wl12xx_arp_rsp_template *tmpl;
1106         struct ieee80211_hdr_3addr *hdr;
1107         struct arphdr *arp_hdr;
1108
1109         skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +
1110                             WL1271_EXTRA_SPACE_MAX);
1111         if (!skb) {
1112                 wl1271_error("failed to allocate buffer for arp rsp template");
1113                 return -ENOMEM;
1114         }
1115
1116         skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);
1117
1118         tmpl = (struct wl12xx_arp_rsp_template *)skb_put(skb, sizeof(*tmpl));
1119         memset(tmpl, 0, sizeof(*tmpl));
1120
1121         /* llc layer */
1122         memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));
1123         tmpl->llc_type = cpu_to_be16(ETH_P_ARP);
1124
1125         /* arp header */
1126         arp_hdr = &tmpl->arp_hdr;
1127         arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
1128         arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
1129         arp_hdr->ar_hln = ETH_ALEN;
1130         arp_hdr->ar_pln = 4;
1131         arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
1132
1133         /* arp payload */
1134         memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);
1135         tmpl->sender_ip = wlvif->ip_addr;
1136
1137         /* encryption space */
1138         switch (wlvif->encryption_type) {
1139         case KEY_TKIP:
1140                 if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
1141                         extra = WL1271_EXTRA_SPACE_TKIP;
1142                 break;
1143         case KEY_AES:
1144                 extra = WL1271_EXTRA_SPACE_AES;
1145                 break;
1146         case KEY_NONE:
1147         case KEY_WEP:
1148         case KEY_GEM:
1149                 extra = 0;
1150                 break;
1151         default:
1152                 wl1271_warning("Unknown encryption type: %d",
1153                                wlvif->encryption_type);
1154                 ret = -EINVAL;
1155                 goto out;
1156         }
1157
1158         if (extra) {
1159                 u8 *space = skb_push(skb, extra);
1160                 memset(space, 0, extra);
1161         }
1162
1163         /* QoS header - BE */
1164         if (wlvif->sta.qos)
1165                 memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));
1166
1167         /* mac80211 header */
1168         hdr = (struct ieee80211_hdr_3addr *)skb_push(skb, sizeof(*hdr));
1169         memset(hdr, 0, sizeof(*hdr));
1170         fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;
1171         if (wlvif->sta.qos)
1172                 fc |= IEEE80211_STYPE_QOS_DATA;
1173         else
1174                 fc |= IEEE80211_STYPE_DATA;
1175         if (wlvif->encryption_type != KEY_NONE)
1176                 fc |= IEEE80211_FCTL_PROTECTED;
1177
1178         hdr->frame_control = cpu_to_le16(fc);
1179         memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);
1180         memcpy(hdr->addr2, vif->addr, ETH_ALEN);
1181         memset(hdr->addr3, 0xff, ETH_ALEN);
1182
1183         ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,
1184                                       skb->data, skb->len, 0,
1185                                       wlvif->basic_rate);
1186 out:
1187         dev_kfree_skb(skb);
1188         return ret;
1189 }
1190
1191 int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
1192 {
1193         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
1194         struct ieee80211_qos_hdr template;
1195
1196         memset(&template, 0, sizeof(template));
1197
1198         memcpy(template.addr1, vif->bss_conf.bssid, ETH_ALEN);
1199         memcpy(template.addr2, vif->addr, ETH_ALEN);
1200         memcpy(template.addr3, vif->bss_conf.bssid, ETH_ALEN);
1201
1202         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1203                                              IEEE80211_STYPE_QOS_NULLFUNC |
1204                                              IEEE80211_FCTL_TODS);
1205
1206         /* FIXME: not sure what priority to use here */
1207         template.qos_ctrl = cpu_to_le16(0);
1208
1209         return wl1271_cmd_template_set(wl, wlvif->role_id,
1210                                        CMD_TEMPL_QOS_NULL_DATA, &template,
1211                                        sizeof(template), 0,
1212                                        wlvif->basic_rate);
1213 }
1214
1215 int wl12xx_cmd_set_default_wep_key(struct wl1271 *wl, u8 id, u8 hlid)
1216 {
1217         struct wl1271_cmd_set_keys *cmd;
1218         int ret = 0;
1219
1220         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
1221
1222         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1223         if (!cmd) {
1224                 ret = -ENOMEM;
1225                 goto out;
1226         }
1227
1228         cmd->hlid = hlid;
1229         cmd->key_id = id;
1230         cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1231         cmd->key_action = cpu_to_le16(KEY_SET_ID);
1232         cmd->key_type = KEY_WEP;
1233
1234         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1235         if (ret < 0) {
1236                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
1237                 goto out;
1238         }
1239
1240 out:
1241         kfree(cmd);
1242
1243         return ret;
1244 }
1245
1246 int wl1271_cmd_set_sta_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1247                        u16 action, u8 id, u8 key_type,
1248                        u8 key_size, const u8 *key, const u8 *addr,
1249                        u32 tx_seq_32, u16 tx_seq_16)
1250 {
1251         struct wl1271_cmd_set_keys *cmd;
1252         int ret = 0;
1253
1254         /* hlid might have already been deleted */
1255         if (wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
1256                 return 0;
1257
1258         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1259         if (!cmd) {
1260                 ret = -ENOMEM;
1261                 goto out;
1262         }
1263
1264         cmd->hlid = wlvif->sta.hlid;
1265
1266         if (key_type == KEY_WEP)
1267                 cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
1268         else if (is_broadcast_ether_addr(addr))
1269                 cmd->lid_key_type = BROADCAST_LID_TYPE;
1270         else
1271                 cmd->lid_key_type = UNICAST_LID_TYPE;
1272
1273         cmd->key_action = cpu_to_le16(action);
1274         cmd->key_size = key_size;
1275         cmd->key_type = key_type;
1276
1277         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1278         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1279
1280         cmd->key_id = id;
1281
1282         if (key_type == KEY_TKIP) {
1283                 /*
1284                  * We get the key in the following form:
1285                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1286                  * but the target is expecting:
1287                  * TKIP - RX MIC - TX MIC
1288                  */
1289                 memcpy(cmd->key, key, 16);
1290                 memcpy(cmd->key + 16, key + 24, 8);
1291                 memcpy(cmd->key + 24, key + 16, 8);
1292
1293         } else {
1294                 memcpy(cmd->key, key, key_size);
1295         }
1296
1297         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1298
1299         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1300         if (ret < 0) {
1301                 wl1271_warning("could not set keys");
1302         goto out;
1303         }
1304
1305 out:
1306         kfree(cmd);
1307
1308         return ret;
1309 }
1310
1311 /*
1312  * TODO: merge with sta/ibss into 1 set_key function.
1313  * note there are slight diffs
1314  */
1315 int wl1271_cmd_set_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1316                           u16 action, u8 id, u8 key_type,
1317                           u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
1318                           u16 tx_seq_16)
1319 {
1320         struct wl1271_cmd_set_keys *cmd;
1321         int ret = 0;
1322         u8 lid_type;
1323
1324         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1325         if (!cmd)
1326                 return -ENOMEM;
1327
1328         if (hlid == wlvif->ap.bcast_hlid) {
1329                 if (key_type == KEY_WEP)
1330                         lid_type = WEP_DEFAULT_LID_TYPE;
1331                 else
1332                         lid_type = BROADCAST_LID_TYPE;
1333         } else {
1334                 lid_type = UNICAST_LID_TYPE;
1335         }
1336
1337         wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
1338                      " hlid: %d", (int)action, (int)id, (int)lid_type,
1339                      (int)key_type, (int)hlid);
1340
1341         cmd->lid_key_type = lid_type;
1342         cmd->hlid = hlid;
1343         cmd->key_action = cpu_to_le16(action);
1344         cmd->key_size = key_size;
1345         cmd->key_type = key_type;
1346         cmd->key_id = id;
1347         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
1348         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
1349
1350         if (key_type == KEY_TKIP) {
1351                 /*
1352                  * We get the key in the following form:
1353                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
1354                  * but the target is expecting:
1355                  * TKIP - RX MIC - TX MIC
1356                  */
1357                 memcpy(cmd->key, key, 16);
1358                 memcpy(cmd->key + 16, key + 24, 8);
1359                 memcpy(cmd->key + 24, key + 16, 8);
1360         } else {
1361                 memcpy(cmd->key, key, key_size);
1362         }
1363
1364         wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
1365
1366         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1367         if (ret < 0) {
1368                 wl1271_warning("could not set ap keys");
1369                 goto out;
1370         }
1371
1372 out:
1373         kfree(cmd);
1374         return ret;
1375 }
1376
1377 int wl12xx_cmd_set_peer_state(struct wl1271 *wl, u8 hlid)
1378 {
1379         struct wl12xx_cmd_set_peer_state *cmd;
1380         int ret = 0;
1381
1382         wl1271_debug(DEBUG_CMD, "cmd set peer state (hlid=%d)", hlid);
1383
1384         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1385         if (!cmd) {
1386                 ret = -ENOMEM;
1387                 goto out;
1388         }
1389
1390         cmd->hlid = hlid;
1391         cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1392
1393         ret = wl1271_cmd_send(wl, CMD_SET_PEER_STATE, cmd, sizeof(*cmd), 0);
1394         if (ret < 0) {
1395                 wl1271_error("failed to send set peer state command");
1396                 goto out_free;
1397         }
1398
1399 out_free:
1400         kfree(cmd);
1401
1402 out:
1403         return ret;
1404 }
1405
1406 int wl12xx_cmd_add_peer(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1407                         struct ieee80211_sta *sta, u8 hlid)
1408 {
1409         struct wl12xx_cmd_add_peer *cmd;
1410         int i, ret;
1411         u32 sta_rates;
1412
1413         wl1271_debug(DEBUG_CMD, "cmd add peer %d", (int)hlid);
1414
1415         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1416         if (!cmd) {
1417                 ret = -ENOMEM;
1418                 goto out;
1419         }
1420
1421         memcpy(cmd->addr, sta->addr, ETH_ALEN);
1422         cmd->bss_index = WL1271_AP_BSS_INDEX;
1423         cmd->aid = sta->aid;
1424         cmd->hlid = hlid;
1425         cmd->sp_len = sta->max_sp;
1426         cmd->wmm = sta->wme ? 1 : 0;
1427
1428         for (i = 0; i < NUM_ACCESS_CATEGORIES_COPY; i++)
1429                 if (sta->wme && (sta->uapsd_queues & BIT(i)))
1430                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1431                                         WL1271_PSD_UPSD_TRIGGER;
1432                 else
1433                         cmd->psd_type[NUM_ACCESS_CATEGORIES_COPY-1-i] =
1434                                         WL1271_PSD_LEGACY;
1435
1436
1437         sta_rates = sta->supp_rates[wlvif->band];
1438         if (sta->ht_cap.ht_supported)
1439                 sta_rates |=
1440                         (sta->ht_cap.mcs.rx_mask[0] << HW_HT_RATES_OFFSET) |
1441                         (sta->ht_cap.mcs.rx_mask[1] << HW_MIMO_RATES_OFFSET);
1442
1443         cmd->supported_rates =
1444                 cpu_to_le32(wl1271_tx_enabled_rates_get(wl, sta_rates,
1445                                                         wlvif->band));
1446
1447         wl1271_debug(DEBUG_CMD, "new peer rates=0x%x queues=0x%x",
1448                      cmd->supported_rates, sta->uapsd_queues);
1449
1450         ret = wl1271_cmd_send(wl, CMD_ADD_PEER, cmd, sizeof(*cmd), 0);
1451         if (ret < 0) {
1452                 wl1271_error("failed to initiate cmd add peer");
1453                 goto out_free;
1454         }
1455
1456 out_free:
1457         kfree(cmd);
1458
1459 out:
1460         return ret;
1461 }
1462
1463 int wl12xx_cmd_remove_peer(struct wl1271 *wl, u8 hlid)
1464 {
1465         struct wl12xx_cmd_remove_peer *cmd;
1466         int ret;
1467         bool timeout = false;
1468
1469         wl1271_debug(DEBUG_CMD, "cmd remove peer %d", (int)hlid);
1470
1471         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1472         if (!cmd) {
1473                 ret = -ENOMEM;
1474                 goto out;
1475         }
1476
1477         cmd->hlid = hlid;
1478         /* We never send a deauth, mac80211 is in charge of this */
1479         cmd->reason_opcode = 0;
1480         cmd->send_deauth_flag = 0;
1481
1482         ret = wl1271_cmd_send(wl, CMD_REMOVE_PEER, cmd, sizeof(*cmd), 0);
1483         if (ret < 0) {
1484                 wl1271_error("failed to initiate cmd remove peer");
1485                 goto out_free;
1486         }
1487
1488         ret = wl1271_cmd_wait_for_event_or_timeout(wl,
1489                                            PEER_REMOVE_COMPLETE_EVENT_ID,
1490                                            &timeout);
1491         /*
1492          * We are ok with a timeout here. The event is sometimes not sent
1493          * due to a firmware bug. In case of another error (like SDIO timeout)
1494          * queue a recovery.
1495          */
1496         if (ret)
1497                 wl12xx_queue_recovery_work(wl);
1498
1499 out_free:
1500         kfree(cmd);
1501
1502 out:
1503         return ret;
1504 }
1505
1506 int wl12xx_cmd_config_fwlog(struct wl1271 *wl)
1507 {
1508         struct wl12xx_cmd_config_fwlog *cmd;
1509         int ret = 0;
1510
1511         wl1271_debug(DEBUG_CMD, "cmd config firmware logger");
1512
1513         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1514         if (!cmd) {
1515                 ret = -ENOMEM;
1516                 goto out;
1517         }
1518
1519         cmd->logger_mode = wl->conf.fwlog.mode;
1520         cmd->log_severity = wl->conf.fwlog.severity;
1521         cmd->timestamp = wl->conf.fwlog.timestamp;
1522         cmd->output = wl->conf.fwlog.output;
1523         cmd->threshold = wl->conf.fwlog.threshold;
1524
1525         ret = wl1271_cmd_send(wl, CMD_CONFIG_FWLOGGER, cmd, sizeof(*cmd), 0);
1526         if (ret < 0) {
1527                 wl1271_error("failed to send config firmware logger command");
1528                 goto out_free;
1529         }
1530
1531 out_free:
1532         kfree(cmd);
1533
1534 out:
1535         return ret;
1536 }
1537
1538 int wl12xx_cmd_start_fwlog(struct wl1271 *wl)
1539 {
1540         struct wl12xx_cmd_start_fwlog *cmd;
1541         int ret = 0;
1542
1543         wl1271_debug(DEBUG_CMD, "cmd start firmware logger");
1544
1545         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1546         if (!cmd) {
1547                 ret = -ENOMEM;
1548                 goto out;
1549         }
1550
1551         ret = wl1271_cmd_send(wl, CMD_START_FWLOGGER, cmd, sizeof(*cmd), 0);
1552         if (ret < 0) {
1553                 wl1271_error("failed to send start firmware logger command");
1554                 goto out_free;
1555         }
1556
1557 out_free:
1558         kfree(cmd);
1559
1560 out:
1561         return ret;
1562 }
1563
1564 int wl12xx_cmd_stop_fwlog(struct wl1271 *wl)
1565 {
1566         struct wl12xx_cmd_stop_fwlog *cmd;
1567         int ret = 0;
1568
1569         wl1271_debug(DEBUG_CMD, "cmd stop firmware logger");
1570
1571         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1572         if (!cmd) {
1573                 ret = -ENOMEM;
1574                 goto out;
1575         }
1576
1577         ret = wl1271_cmd_send(wl, CMD_STOP_FWLOGGER, cmd, sizeof(*cmd), 0);
1578         if (ret < 0) {
1579                 wl1271_error("failed to send stop firmware logger command");
1580                 goto out_free;
1581         }
1582
1583 out_free:
1584         kfree(cmd);
1585
1586 out:
1587         return ret;
1588 }
1589
1590 static int wl12xx_cmd_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
1591                           u8 role_id)
1592 {
1593         struct wl12xx_cmd_roc *cmd;
1594         int ret = 0;
1595
1596         wl1271_debug(DEBUG_CMD, "cmd roc %d (%d)", wlvif->channel, role_id);
1597
1598         if (WARN_ON(role_id == WL12XX_INVALID_ROLE_ID))
1599                 return -EINVAL;
1600
1601         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1602         if (!cmd) {
1603                 ret = -ENOMEM;
1604                 goto out;
1605         }
1606
1607         cmd->role_id = role_id;
1608         cmd->channel = wlvif->channel;
1609         switch (wlvif->band) {
1610         case IEEE80211_BAND_2GHZ:
1611                 cmd->band = WLCORE_BAND_2_4GHZ;
1612                 break;
1613         case IEEE80211_BAND_5GHZ:
1614                 cmd->band = WLCORE_BAND_5GHZ;
1615                 break;
1616         default:
1617                 wl1271_error("roc - unknown band: %d", (int)wlvif->band);
1618                 ret = -EINVAL;
1619                 goto out_free;
1620         }
1621
1622
1623         ret = wl1271_cmd_send(wl, CMD_REMAIN_ON_CHANNEL, cmd, sizeof(*cmd), 0);
1624         if (ret < 0) {
1625                 wl1271_error("failed to send ROC command");
1626                 goto out_free;
1627         }
1628
1629 out_free:
1630         kfree(cmd);
1631
1632 out:
1633         return ret;
1634 }
1635
1636 static int wl12xx_cmd_croc(struct wl1271 *wl, u8 role_id)
1637 {
1638         struct wl12xx_cmd_croc *cmd;
1639         int ret = 0;
1640
1641         wl1271_debug(DEBUG_CMD, "cmd croc (%d)", role_id);
1642
1643         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1644         if (!cmd) {
1645                 ret = -ENOMEM;
1646                 goto out;
1647         }
1648         cmd->role_id = role_id;
1649
1650         ret = wl1271_cmd_send(wl, CMD_CANCEL_REMAIN_ON_CHANNEL, cmd,
1651                               sizeof(*cmd), 0);
1652         if (ret < 0) {
1653                 wl1271_error("failed to send ROC command");
1654                 goto out_free;
1655         }
1656
1657 out_free:
1658         kfree(cmd);
1659
1660 out:
1661         return ret;
1662 }
1663
1664 int wl12xx_roc(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 role_id)
1665 {
1666         int ret = 0;
1667         bool is_first_roc;
1668
1669         if (WARN_ON(test_bit(role_id, wl->roc_map)))
1670                 return 0;
1671
1672         is_first_roc = (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >=
1673                         WL12XX_MAX_ROLES);
1674
1675         ret = wl12xx_cmd_roc(wl, wlvif, role_id);
1676         if (ret < 0)
1677                 goto out;
1678
1679         if (is_first_roc) {
1680                 ret = wl1271_cmd_wait_for_event(wl,
1681                                            REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID);
1682                 if (ret < 0) {
1683                         wl1271_error("cmd roc event completion error");
1684                         goto out;
1685                 }
1686         }
1687
1688         __set_bit(role_id, wl->roc_map);
1689 out:
1690         return ret;
1691 }
1692
1693 int wl12xx_croc(struct wl1271 *wl, u8 role_id)
1694 {
1695         int ret = 0;
1696
1697         if (WARN_ON(!test_bit(role_id, wl->roc_map)))
1698                 return 0;
1699
1700         ret = wl12xx_cmd_croc(wl, role_id);
1701         if (ret < 0)
1702                 goto out;
1703
1704         __clear_bit(role_id, wl->roc_map);
1705
1706         /*
1707          * Rearm the tx watchdog when removing the last ROC. This prevents
1708          * recoveries due to just finished ROCs - when Tx hasn't yet had
1709          * a chance to get out.
1710          */
1711         if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES)
1712                 wl12xx_rearm_tx_watchdog_locked(wl);
1713 out:
1714         return ret;
1715 }
1716
1717 int wl12xx_cmd_channel_switch(struct wl1271 *wl,
1718                               struct wl12xx_vif *wlvif,
1719                               struct ieee80211_channel_switch *ch_switch)
1720 {
1721         struct wl12xx_cmd_channel_switch *cmd;
1722         int ret;
1723
1724         wl1271_debug(DEBUG_ACX, "cmd channel switch");
1725
1726         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1727         if (!cmd) {
1728                 ret = -ENOMEM;
1729                 goto out;
1730         }
1731
1732         cmd->role_id = wlvif->role_id;
1733         cmd->channel = ch_switch->channel->hw_value;
1734         cmd->switch_time = ch_switch->count;
1735         cmd->stop_tx = ch_switch->block_tx;
1736
1737         /* FIXME: control from mac80211 in the future */
1738         cmd->post_switch_tx_disable = 0;  /* Enable TX on the target channel */
1739
1740         ret = wl1271_cmd_send(wl, CMD_CHANNEL_SWITCH, cmd, sizeof(*cmd), 0);
1741         if (ret < 0) {
1742                 wl1271_error("failed to send channel switch command");
1743                 goto out_free;
1744         }
1745
1746 out_free:
1747         kfree(cmd);
1748
1749 out:
1750         return ret;
1751 }
1752
1753 int wl12xx_cmd_stop_channel_switch(struct wl1271 *wl)
1754 {
1755         struct wl12xx_cmd_stop_channel_switch *cmd;
1756         int ret;
1757
1758         wl1271_debug(DEBUG_ACX, "cmd stop channel switch");
1759
1760         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1761         if (!cmd) {
1762                 ret = -ENOMEM;
1763                 goto out;
1764         }
1765
1766         ret = wl1271_cmd_send(wl, CMD_STOP_CHANNEL_SWICTH, cmd, sizeof(*cmd), 0);
1767         if (ret < 0) {
1768                 wl1271_error("failed to stop channel switch command");
1769                 goto out_free;
1770         }
1771
1772 out_free:
1773         kfree(cmd);
1774
1775 out:
1776         return ret;
1777 }
1778
1779 /* start dev role and roc on its channel */
1780 int wl12xx_start_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1781 {
1782         int ret;
1783
1784         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
1785                       wlvif->bss_type == BSS_TYPE_IBSS)))
1786                 return -EINVAL;
1787
1788         ret = wl12xx_cmd_role_start_dev(wl, wlvif);
1789         if (ret < 0)
1790                 goto out;
1791
1792         ret = wl12xx_roc(wl, wlvif, wlvif->dev_role_id);
1793         if (ret < 0)
1794                 goto out_stop;
1795
1796         return 0;
1797
1798 out_stop:
1799         wl12xx_cmd_role_stop_dev(wl, wlvif);
1800 out:
1801         return ret;
1802 }
1803
1804 /* croc dev hlid, and stop the role */
1805 int wl12xx_stop_dev(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1806 {
1807         int ret;
1808
1809         if (WARN_ON(!(wlvif->bss_type == BSS_TYPE_STA_BSS ||
1810                       wlvif->bss_type == BSS_TYPE_IBSS)))
1811                 return -EINVAL;
1812
1813         /* flush all pending packets */
1814         ret = wlcore_tx_work_locked(wl);
1815         if (ret < 0)
1816                 goto out;
1817
1818         if (test_bit(wlvif->dev_role_id, wl->roc_map)) {
1819                 ret = wl12xx_croc(wl, wlvif->dev_role_id);
1820                 if (ret < 0)
1821                         goto out;
1822         }
1823
1824         ret = wl12xx_cmd_role_stop_dev(wl, wlvif);
1825         if (ret < 0)
1826                 goto out;
1827 out:
1828         return ret;
1829 }