drivers/net/wireless/wl12xx/wl1271_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/crc7.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/ieee80211.h>
  30 #include <linux/slab.h>
  31
  32 #include "wl1271.h"
  33 #include "wl1271_reg.h"
  34 #include "wl1271_io.h"
  35 #include "wl1271_acx.h"
  36 #include "wl12xx_80211.h"
  37 #include "wl1271_cmd.h"
  38 #include "wl1271_event.h"
  39
  40 #define WL1271_CMD_FAST_POLL_COUNT       50
  41
  42 /*
  43  * send command to firmware
  44  *
  45  * @wl: wl struct
  46  * @id: command id
  47  * @buf: buffer containing the command, must work with dma
  48  * @len: length of the buffer
  49  */
  50 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
  51                     size_t res_len)
  52 {
  53         struct wl1271_cmd_header *cmd;
  54         unsigned long timeout;
  55         u32 intr;
  56         int ret = 0;
  57         u16 status;
  58         u16 poll_count = 0;
  59
  60         cmd = buf;
  61         cmd->id = cpu_to_le16(id);
  62         cmd->status = 0;
  63
  64         WARN_ON(len % 4 != 0);
  65
  66         wl1271_write(wl, wl->cmd_box_addr, buf, len, false);
  67
  68         wl1271_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
  69
  70         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  71
  72         intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  73         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  74                 if (time_after(jiffies, timeout)) {
  75                         wl1271_error("command complete timeout");
  76                         ret = -ETIMEDOUT;
  77                         goto out;
  78                 }
  79
  80                 poll_count++;
  81                 if (poll_count < WL1271_CMD_FAST_POLL_COUNT)
  82                         udelay(10);
  83                 else
  84                         msleep(1);
  85
  86                 intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  87         }
  88
  89         /* read back the status code of the command */
  90         if (res_len == 0)
  91                 res_len = sizeof(struct wl1271_cmd_header);
  92         wl1271_read(wl, wl->cmd_box_addr, cmd, res_len, false);
  93
  94         status = le16_to_cpu(cmd->status);
  95         if (status != CMD_STATUS_SUCCESS) {
  96                 wl1271_error("command execute failure %d", status);
  97                 ret = -EIO;
  98         }
  99
 100         wl1271_write32(wl, ACX_REG_INTERRUPT_ACK,
 101                        WL1271_ACX_INTR_CMD_COMPLETE);
 102
 103 out:
 104         return ret;
 105 }
 106
 107 static int wl1271_cmd_cal_channel_tune(struct wl1271 *wl)
 108 {
 109         struct wl1271_cmd_cal_channel_tune *cmd;
 110         int ret = 0;
 111
 112         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 113         if (!cmd)
 114                 return -ENOMEM;
 115
 116         cmd->test.id = TEST_CMD_CHANNEL_TUNE;
 117
 118         cmd->band = WL1271_CHANNEL_TUNE_BAND_2_4;
 119         /* set up any channel, 7 is in the middle of the range */
 120         cmd->channel = 7;
 121
 122         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 123         if (ret < 0)
 124                 wl1271_warning("TEST_CMD_CHANNEL_TUNE failed");
 125
 126         kfree(cmd);
 127         return ret;
 128 }
 129
 130 static int wl1271_cmd_cal_update_ref_point(struct wl1271 *wl)
 131 {
 132         struct wl1271_cmd_cal_update_ref_point *cmd;
 133         int ret = 0;
 134
 135         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 136         if (!cmd)
 137                 return -ENOMEM;
 138
 139         cmd->test.id = TEST_CMD_UPDATE_PD_REFERENCE_POINT;
 140
 141         /* FIXME: still waiting for the correct values */
 142         cmd->ref_power    = 0;
 143         cmd->ref_detector = 0;
 144
 145         cmd->sub_band     = WL1271_PD_REFERENCE_POINT_BAND_B_G;
 146
 147         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 148         if (ret < 0)
 149                 wl1271_warning("TEST_CMD_UPDATE_PD_REFERENCE_POINT failed");
 150
 151         kfree(cmd);
 152         return ret;
 153 }
 154
 155 static int wl1271_cmd_cal_p2g(struct wl1271 *wl)
 156 {
 157         struct wl1271_cmd_cal_p2g *cmd;
 158         int ret = 0;
 159
 160         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 161         if (!cmd)
 162                 return -ENOMEM;
 163
 164         cmd->test.id = TEST_CMD_P2G_CAL;
 165
 166         cmd->sub_band_mask = WL1271_CAL_P2G_BAND_B_G;
 167
 168         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 169         if (ret < 0)
 170                 wl1271_warning("TEST_CMD_P2G_CAL failed");
 171
 172         kfree(cmd);
 173         return ret;
 174 }
 175
 176 static int wl1271_cmd_cal(struct wl1271 *wl)
 177 {
 178         /*
 179          * FIXME: we must make sure that we're not sleeping when calibration
 180          * is done
 181          */
 182         int ret;
 183
 184         wl1271_notice("performing tx calibration");
 185
 186         ret = wl1271_cmd_cal_channel_tune(wl);
 187         if (ret < 0)
 188                 return ret;
 189
 190         ret = wl1271_cmd_cal_update_ref_point(wl);
 191         if (ret < 0)
 192                 return ret;
 193
 194         ret = wl1271_cmd_cal_p2g(wl);
 195         if (ret < 0)
 196                 return ret;
 197
 198         return ret;
 199 }
 200
 201 int wl1271_cmd_general_parms(struct wl1271 *wl)
 202 {
 203         struct wl1271_general_parms_cmd *gen_parms;
 204         int ret;
 205
 206         if (!wl->nvs)
 207                 return -ENODEV;
 208
 209         gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
 210         if (!gen_parms)
 211                 return -ENOMEM;
 212
 213         gen_parms->test.id = TEST_CMD_INI_FILE_GENERAL_PARAM;
 214
 215         memcpy(gen_parms->params, wl->nvs->general_params,
 216                WL1271_NVS_GENERAL_PARAMS_SIZE);
 217
 218         ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), 0);
 219         if (ret < 0)
 220                 wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");
 221
 222         kfree(gen_parms);
 223         return ret;
 224 }
 225
 226 int wl1271_cmd_radio_parms(struct wl1271 *wl)
 227 {
 228         struct wl1271_radio_parms_cmd *radio_parms;
 229         struct conf_radio_parms *rparam = &wl->conf.init.radioparam;
 230         int ret;
 231
 232         if (!wl->nvs)
 233                 return -ENODEV;
 234
 235         radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
 236         if (!radio_parms)
 237                 return -ENOMEM;
 238
 239         radio_parms->test.id = TEST_CMD_INI_FILE_RADIO_PARAM;
 240
 241         memcpy(radio_parms->stat_radio_params, wl->nvs->stat_radio_params,
 242                WL1271_NVS_STAT_RADIO_PARAMS_SIZE);
 243         memcpy(radio_parms->dyn_radio_params,
 244                wl->nvs->dyn_radio_params[rparam->fem],
 245                WL1271_NVS_DYN_RADIO_PARAMS_SIZE);
 246
 247         /* FIXME: current NVS is missing 5GHz parameters */
 248
 249         wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_RADIO_PARAM: ",
 250                     radio_parms, sizeof(*radio_parms));
 251
 252         ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
 253         if (ret < 0)
 254                 wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");
 255
 256         kfree(radio_parms);
 257         return ret;
 258 }
 259
 260 /*
 261  * Poll the mailbox event field until any of the bits in the mask is set or a
 262  * timeout occurs (WL1271_EVENT_TIMEOUT in msecs)
 263  */
 264 static int wl1271_cmd_wait_for_event(struct wl1271 *wl, u32 mask)
 265 {
 266         u32 events_vector, event;
 267         unsigned long timeout;
 268
 269         timeout = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 270
 271         do {
 272                 if (time_after(jiffies, timeout))
 273                         return -ETIMEDOUT;
 274
 275                 msleep(1);
 276
 277                 /* read from both event fields */
 278                 wl1271_read(wl, wl->mbox_ptr[0], &events_vector,
 279                             sizeof(events_vector), false);
 280                 event = events_vector & mask;
 281                 wl1271_read(wl, wl->mbox_ptr[1], &events_vector,
 282                             sizeof(events_vector), false);
 283                 event |= events_vector & mask;
 284         } while (!event);
 285
 286         return 0;
 287 }
 288
 289 int wl1271_cmd_join(struct wl1271 *wl, u8 bss_type)
 290 {
 291         static bool do_cal = true;
 292         struct wl1271_cmd_join *join;
 293         int ret, i;
 294         u8 *bssid;
 295
 296         /* FIXME: remove when we get calibration from the factory */
 297         if (do_cal) {
 298                 ret = wl1271_cmd_cal(wl);
 299                 if (ret < 0)
 300                         wl1271_warning("couldn't calibrate");
 301                 else
 302                         do_cal = false;
 303         }
 304
 305         join = kzalloc(sizeof(*join), GFP_KERNEL);
 306         if (!join) {
 307                 ret = -ENOMEM;
 308                 goto out;
 309         }
 310
 311         wl1271_debug(DEBUG_CMD, "cmd join");
 312
 313         /* Reverse order BSSID */
 314         bssid = (u8 *) &join->bssid_lsb;
 315         for (i = 0; i < ETH_ALEN; i++)
 316                 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
 317
 318         join->rx_config_options = cpu_to_le32(wl->rx_config);
 319         join->rx_filter_options = cpu_to_le32(wl->rx_filter);
 320         join->bss_type = bss_type;
 321         join->basic_rate_set = cpu_to_le32(wl->basic_rate_set);
 322
 323         if (wl->band == IEEE80211_BAND_5GHZ)
 324                 join->bss_type |= WL1271_JOIN_CMD_BSS_TYPE_5GHZ;
 325
 326         join->beacon_interval = cpu_to_le16(wl->beacon_int);
 327         join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;
 328
 329         join->channel = wl->channel;
 330         join->ssid_len = wl->ssid_len;
 331         memcpy(join->ssid, wl->ssid, wl->ssid_len);
 332         join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;
 333
 334         /* increment the session counter */
 335         wl->session_counter++;
 336         if (wl->session_counter >= SESSION_COUNTER_MAX)
 337                 wl->session_counter = 0;
 338
 339         join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
 340
 341         /* reset TX security counters */
 342         wl->tx_security_last_seq = 0;
 343         wl->tx_security_seq = 0;
 344
 345         ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
 346         if (ret < 0) {
 347                 wl1271_error("failed to initiate cmd join");
 348                 goto out_free;
 349         }
 350
 351         ret = wl1271_cmd_wait_for_event(wl, JOIN_EVENT_COMPLETE_ID);
 352         if (ret < 0)
 353                 wl1271_error("cmd join event completion error");
 354
 355 out_free:
 356         kfree(join);
 357
 358 out:
 359         return ret;
 360 }
 361
 362 /**
 363  * send test command to firmware
 364  *
 365  * @wl: wl struct
 366  * @buf: buffer containing the command, with all headers, must work with dma
 367  * @len: length of the buffer
 368  * @answer: is answer needed
 369  */
 370 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 371 {
 372         int ret;
 373         size_t res_len = 0;
 374
 375         wl1271_debug(DEBUG_CMD, "cmd test");
 376
 377         if (answer)
 378                 res_len = buf_len;
 379
 380         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 381
 382         if (ret < 0) {
 383                 wl1271_warning("TEST command failed");
 384                 return ret;
 385         }
 386
 387         return ret;
 388 }
 389
 390 /**
 391  * read acx from firmware
 392  *
 393  * @wl: wl struct
 394  * @id: acx id
 395  * @buf: buffer for the response, including all headers, must work with dma
 396  * @len: lenght of buf
 397  */
 398 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 399 {
 400         struct acx_header *acx = buf;
 401         int ret;
 402
 403         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 404
 405         acx->id = cpu_to_le16(id);
 406
 407         /* payload length, does not include any headers */
 408         acx->len = cpu_to_le16(len - sizeof(*acx));
 409
 410         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 411         if (ret < 0)
 412                 wl1271_error("INTERROGATE command failed");
 413
 414         return ret;
 415 }
 416
 417 /**
 418  * write acx value to firmware
 419  *
 420  * @wl: wl struct
 421  * @id: acx id
 422  * @buf: buffer containing acx, including all headers, must work with dma
 423  * @len: length of buf
 424  */
 425 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 426 {
 427         struct acx_header *acx = buf;
 428         int ret;
 429
 430         wl1271_debug(DEBUG_CMD, "cmd configure");
 431
 432         acx->id = cpu_to_le16(id);
 433
 434         /* payload length, does not include any headers */
 435         acx->len = cpu_to_le16(len - sizeof(*acx));
 436
 437         ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 438         if (ret < 0) {
 439                 wl1271_warning("CONFIGURE command NOK");
 440                 return ret;
 441         }
 442
 443         return 0;
 444 }
 445
 446 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 447 {
 448         struct cmd_enabledisable_path *cmd;
 449         int ret;
 450         u16 cmd_rx, cmd_tx;
 451
 452         wl1271_debug(DEBUG_CMD, "cmd data path");
 453
 454         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 455         if (!cmd) {
 456                 ret = -ENOMEM;
 457                 goto out;
 458         }
 459
 460         /* the channel here is only used for calibration, so hardcoded to 1 */
 461         cmd->channel = 1;
 462
 463         if (enable) {
 464                 cmd_rx = CMD_ENABLE_RX;
 465                 cmd_tx = CMD_ENABLE_TX;
 466         } else {
 467                 cmd_rx = CMD_DISABLE_RX;
 468                 cmd_tx = CMD_DISABLE_TX;
 469         }
 470
 471         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 472         if (ret < 0) {
 473                 wl1271_error("rx %s cmd for channel %d failed",
 474                              enable ? "start" : "stop", cmd->channel);
 475                 goto out;
 476         }
 477
 478         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 479                      enable ? "start" : "stop", cmd->channel);
 480
 481         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 482         if (ret < 0) {
 483                 wl1271_error("tx %s cmd for channel %d failed",
 484                              enable ? "start" : "stop", cmd->channel);
 485                 goto out;
 486         }
 487
 488         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 489                      enable ? "start" : "stop", cmd->channel);
 490
 491 out:
 492         kfree(cmd);
 493         return ret;
 494 }
 495
 496 int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode, bool send)
 497 {
 498         struct wl1271_cmd_ps_params *ps_params = NULL;
 499         int ret = 0;
 500
 501         /* FIXME: this should be in ps.c */
 502         ret = wl1271_acx_wake_up_conditions(wl);
 503         if (ret < 0) {
 504                 wl1271_error("couldn't set wake up conditions");
 505                 goto out;
 506         }
 507
 508         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 509
 510         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 511         if (!ps_params) {
 512                 ret = -ENOMEM;
 513                 goto out;
 514         }
 515
 516         ps_params->ps_mode = ps_mode;
 517         ps_params->send_null_data = send;
 518         ps_params->retries = 5;
 519         ps_params->hang_over_period = 1;
 520         ps_params->null_data_rate = cpu_to_le32(1); /* 1 Mbps */
 521
 522         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 523                               sizeof(*ps_params), 0);
 524         if (ret < 0) {
 525                 wl1271_error("cmd set_ps_mode failed");
 526                 goto out;
 527         }
 528
 529 out:
 530         kfree(ps_params);
 531         return ret;
 532 }
 533
 534 int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
 535                            size_t len)
 536 {
 537         struct cmd_read_write_memory *cmd;
 538         int ret = 0;
 539
 540         wl1271_debug(DEBUG_CMD, "cmd read memory");
 541
 542         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 543         if (!cmd) {
 544                 ret = -ENOMEM;
 545                 goto out;
 546         }
 547
 548         WARN_ON(len > MAX_READ_SIZE);
 549         len = min_t(size_t, len, MAX_READ_SIZE);
 550
 551         cmd->addr = cpu_to_le32(addr);
 552         cmd->size = cpu_to_le32(len);
 553
 554         ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd),
 555                               sizeof(*cmd));
 556         if (ret < 0) {
 557                 wl1271_error("read memory command failed: %d", ret);
 558                 goto out;
 559         }
 560
 561         /* the read command got in */
 562         memcpy(answer, cmd->value, len);
 563
 564 out:
 565         kfree(cmd);
 566         return ret;
 567 }
 568
 569 int wl1271_cmd_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
 570                     const u8 *ie, size_t ie_len, u8 active_scan,
 571                     u8 high_prio, u8 band, u8 probe_requests)
 572 {
 573
 574         struct wl1271_cmd_trigger_scan_to *trigger = NULL;
 575         struct wl1271_cmd_scan *params = NULL;
 576         struct ieee80211_channel *channels;
 577         u32 rate;
 578         int i, j, n_ch, ret;
 579         u16 scan_options = 0;
 580         u8 ieee_band;
 581
 582         if (band == WL1271_SCAN_BAND_2_4_GHZ) {
 583                 ieee_band = IEEE80211_BAND_2GHZ;
 584                 rate = wl->conf.tx.basic_rate;
 585         } else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled()) {
 586                 ieee_band = IEEE80211_BAND_2GHZ;
 587                 rate = wl->conf.tx.basic_rate;
 588         } else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled()) {
 589                 ieee_band = IEEE80211_BAND_5GHZ;
 590                 rate = wl->conf.tx.basic_rate_5;
 591         } else
 592                 return -EINVAL;
 593
 594         if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
 595                 return -EINVAL;
 596
 597         channels = wl->hw->wiphy->bands[ieee_band]->channels;
 598         n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;
 599
 600         if (test_bit(WL1271_FLAG_SCANNING, &wl->flags))
 601                 return -EINVAL;
 602
 603         params = kzalloc(sizeof(*params), GFP_KERNEL);
 604         if (!params)
 605                 return -ENOMEM;
 606
 607         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 608         params->params.rx_filter_options =
 609                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 610
 611         if (!active_scan)
 612                 scan_options |= WL1271_SCAN_OPT_PASSIVE;
 613         if (high_prio)
 614                 scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
 615         params->params.scan_options = cpu_to_le16(scan_options);
 616
 617         params->params.num_probe_requests = probe_requests;
 618         params->params.tx_rate = cpu_to_le32(rate);
 619         params->params.tid_trigger = 0;
 620         params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
 621
 622         if (band == WL1271_SCAN_BAND_DUAL)
 623                 params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
 624         else
 625                 params->params.band = band;
 626
 627         for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
 628                 if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
 629                         params->channels[j].min_duration =
 630                                 cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
 631                         params->channels[j].max_duration =
 632                                 cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
 633                         memset(&params->channels[j].bssid_lsb, 0xff, 4);
 634                         memset(&params->channels[j].bssid_msb, 0xff, 2);
 635                         params->channels[j].early_termination = 0;
 636                         params->channels[j].tx_power_att =
 637                                 WL1271_SCAN_CURRENT_TX_PWR;
 638                         params->channels[j].channel = channels[i].hw_value;
 639                         j++;
 640                 }
 641         }
 642
 643         params->params.num_channels = j;
 644
 645         if (ssid_len && ssid) {
 646                 params->params.ssid_len = ssid_len;
 647                 memcpy(params->params.ssid, ssid, ssid_len);
 648         }
 649
 650         ret = wl1271_cmd_build_probe_req(wl, ssid, ssid_len,
 651                                          ie, ie_len, ieee_band);
 652         if (ret < 0) {
 653                 wl1271_error("PROBE request template failed");
 654                 goto out;
 655         }
 656
 657         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
 658         if (!trigger) {
 659                 ret = -ENOMEM;
 660                 goto out;
 661         }
 662
 663         /* disable the timeout */
 664         trigger->timeout = 0;
 665
 666         ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
 667                               sizeof(*trigger), 0);
 668         if (ret < 0) {
 669                 wl1271_error("trigger scan to failed for hw scan");
 670                 goto out;
 671         }
 672
 673         wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 674
 675         set_bit(WL1271_FLAG_SCANNING, &wl->flags);
 676         if (wl1271_11a_enabled()) {
 677                 wl->scan.state = band;
 678                 if (band == WL1271_SCAN_BAND_DUAL) {
 679                         wl->scan.active = active_scan;
 680                         wl->scan.high_prio = high_prio;
 681                         wl->scan.probe_requests = probe_requests;
 682                         if (ssid_len && ssid) {
 683                                 wl->scan.ssid_len = ssid_len;
 684                                 memcpy(wl->scan.ssid, ssid, ssid_len);
 685                         } else
 686                                 wl->scan.ssid_len = 0;
 687                 }
 688         }
 689
 690         ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params), 0);
 691         if (ret < 0) {
 692                 wl1271_error("SCAN failed");
 693                 clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
 694                 goto out;
 695         }
 696
 697 out:
 698         kfree(params);
 699         kfree(trigger);
 700         return ret;
 701 }
 702
 703 int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
 704                             void *buf, size_t buf_len, int index, u32 rates)
 705 {
 706         struct wl1271_cmd_template_set *cmd;
 707         int ret = 0;
 708
 709         wl1271_debug(DEBUG_CMD, "cmd template_set %d", template_id);
 710
 711         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
 712         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
 713
 714         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 715         if (!cmd) {
 716                 ret = -ENOMEM;
 717                 goto out;
 718         }
 719
 720         cmd->len = cpu_to_le16(buf_len);
 721         cmd->template_type = template_id;
 722         cmd->enabled_rates = cpu_to_le32(rates);
 723         cmd->short_retry_limit = wl->conf.tx.rc_conf.short_retry_limit;
 724         cmd->long_retry_limit = wl->conf.tx.rc_conf.long_retry_limit;
 725         cmd->index = index;
 726
 727         if (buf)
 728                 memcpy(cmd->template_data, buf, buf_len);
 729
 730         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
 731         if (ret < 0) {
 732                 wl1271_warning("cmd set_template failed: %d", ret);
 733                 goto out_free;
 734         }
 735
 736 out_free:
 737         kfree(cmd);
 738
 739 out:
 740         return ret;
 741 }
 742
 743 int wl1271_cmd_build_null_data(struct wl1271 *wl)
 744 {
 745         struct sk_buff *skb = NULL;
 746         int size;
 747         void *ptr;
 748         int ret = -ENOMEM;
 749
 750
 751         if (wl->bss_type == BSS_TYPE_IBSS) {
 752                 size = sizeof(struct wl12xx_null_data_template);
 753                 ptr = NULL;
 754         } else {
 755                 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 756                 if (!skb)
 757                         goto out;
 758                 size = skb->len;
 759                 ptr = skb->data;
 760         }
 761
 762         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, ptr, size, 0,
 763                                       WL1271_RATE_AUTOMATIC);
 764
 765 out:
 766         dev_kfree_skb(skb);
 767         if (ret)
 768                 wl1271_warning("cmd buld null data failed %d", ret);
 769
 770         return ret;
 771
 772 }
 773
 774 int wl1271_cmd_build_klv_null_data(struct wl1271 *wl)
 775 {
 776         struct sk_buff *skb = NULL;
 777         int ret = -ENOMEM;
 778
 779         skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 780         if (!skb)
 781                 goto out;
 782
 783         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_KLV,
 784                                       skb->data, skb->len,
 785                                       CMD_TEMPL_KLV_IDX_NULL_DATA,
 786                                       WL1271_RATE_AUTOMATIC);
 787
 788 out:
 789         dev_kfree_skb(skb);
 790         if (ret)
 791                 wl1271_warning("cmd build klv null data failed %d", ret);
 792
 793         return ret;
 794
 795 }
 796
 797 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
 798 {
 799         struct sk_buff *skb;
 800         int ret = 0;
 801
 802         skb = ieee80211_pspoll_get(wl->hw, wl->vif);
 803         if (!skb)
 804                 goto out;
 805
 806         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, skb->data,
 807                                       skb->len, 0, wl->basic_rate);
 808
 809 out:
 810         dev_kfree_skb(skb);
 811         return ret;
 812 }
 813
 814 int wl1271_cmd_build_probe_req(struct wl1271 *wl,
 815                                const u8 *ssid, size_t ssid_len,
 816                                const u8 *ie, size_t ie_len, u8 band)
 817 {
 818         struct sk_buff *skb;
 819         int ret;
 820
 821         skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
 822                                      ie, ie_len);
 823         if (!skb) {
 824                 ret = -ENOMEM;
 825                 goto out;
 826         }
 827
 828         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", skb->data, skb->len);
 829
 830         if (band == IEEE80211_BAND_2GHZ)
 831                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
 832                                               skb->data, skb->len, 0,
 833                                               wl->conf.tx.basic_rate);
 834         else
 835                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
 836                                               skb->data, skb->len, 0,
 837                                               wl->conf.tx.basic_rate_5);
 838
 839 out:
 840         dev_kfree_skb(skb);
 841         return ret;
 842 }
 843
 844 int wl1271_build_qos_null_data(struct wl1271 *wl)
 845 {
 846         struct ieee80211_qos_hdr template;
 847
 848         memset(&template, 0, sizeof(template));
 849
 850         memcpy(template.addr1, wl->bssid, ETH_ALEN);
 851         memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
 852         memcpy(template.addr3, wl->bssid, ETH_ALEN);
 853
 854         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 855                                              IEEE80211_STYPE_QOS_NULLFUNC |
 856                                              IEEE80211_FCTL_TODS);
 857
 858         /* FIXME: not sure what priority to use here */
 859         template.qos_ctrl = cpu_to_le16(0);
 860
 861         return wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, &template,
 862                                        sizeof(template), 0,
 863                                        WL1271_RATE_AUTOMATIC);
 864 }
 865
 866 int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
 867 {
 868         struct wl1271_cmd_set_keys *cmd;
 869         int ret = 0;
 870
 871         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
 872
 873         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 874         if (!cmd) {
 875                 ret = -ENOMEM;
 876                 goto out;
 877         }
 878
 879         cmd->id = id;
 880         cmd->key_action = cpu_to_le16(KEY_SET_ID);
 881         cmd->key_type = KEY_WEP;
 882
 883         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 884         if (ret < 0) {
 885                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
 886                 goto out;
 887         }
 888
 889 out:
 890         kfree(cmd);
 891
 892         return ret;
 893 }
 894
 895 int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 896                        u8 key_size, const u8 *key, const u8 *addr,
 897                        u32 tx_seq_32, u16 tx_seq_16)
 898 {
 899         struct wl1271_cmd_set_keys *cmd;
 900         int ret = 0;
 901
 902         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 903         if (!cmd) {
 904                 ret = -ENOMEM;
 905                 goto out;
 906         }
 907
 908         if (key_type != KEY_WEP)
 909                 memcpy(cmd->addr, addr, ETH_ALEN);
 910
 911         cmd->key_action = cpu_to_le16(action);
 912         cmd->key_size = key_size;
 913         cmd->key_type = key_type;
 914
 915         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
 916         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
 917
 918         /* we have only one SSID profile */
 919         cmd->ssid_profile = 0;
 920
 921         cmd->id = id;
 922
 923         if (key_type == KEY_TKIP) {
 924                 /*
 925                  * We get the key in the following form:
 926                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 927                  * but the target is expecting:
 928                  * TKIP - RX MIC - TX MIC
 929                  */
 930                 memcpy(cmd->key, key, 16);
 931                 memcpy(cmd->key + 16, key + 24, 8);
 932                 memcpy(cmd->key + 24, key + 16, 8);
 933
 934         } else {
 935                 memcpy(cmd->key, key, key_size);
 936         }
 937
 938         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
 939
 940         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 941         if (ret < 0) {
 942                 wl1271_warning("could not set keys");
 943         goto out;
 944         }
 945
 946 out:
 947         kfree(cmd);
 948
 949         return ret;
 950 }
 951
 952 int wl1271_cmd_disconnect(struct wl1271 *wl)
 953 {
 954         struct wl1271_cmd_disconnect *cmd;
 955         int ret = 0;
 956
 957         wl1271_debug(DEBUG_CMD, "cmd disconnect");
 958
 959         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 960         if (!cmd) {
 961                 ret = -ENOMEM;
 962                 goto out;
 963         }
 964
 965         cmd->rx_config_options = cpu_to_le32(wl->rx_config);
 966         cmd->rx_filter_options = cpu_to_le32(wl->rx_filter);
 967         /* disconnect reason is not used in immediate disconnections */
 968         cmd->type = DISCONNECT_IMMEDIATE;
 969
 970         ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
 971         if (ret < 0) {
 972                 wl1271_error("failed to send disconnect command");
 973                 goto out_free;
 974         }
 975
 976         ret = wl1271_cmd_wait_for_event(wl, DISCONNECT_EVENT_COMPLETE_ID);
 977         if (ret < 0)
 978                 wl1271_error("cmd disconnect event completion error");
 979
 980 out_free:
 981         kfree(cmd);
 982
 983 out:
 984         return ret;
 985 }