drivers/net/wireless/wl12xx/wl1271_cmd.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009 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
  30 #include "wl1271.h"
  31 #include "wl1271_reg.h"
  32 #include "wl1271_spi.h"
  33 #include "wl1271_acx.h"
  34 #include "wl12xx_80211.h"
  35 #include "wl1271_cmd.h"
  36
  37 /*
  38  * send command to firmware
  39  *
  40  * @wl: wl struct
  41  * @id: command id
  42  * @buf: buffer containing the command, must work with dma
  43  * @len: length of the buffer
  44  */
  45 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
  46                     size_t res_len)
  47 {
  48         struct wl1271_cmd_header *cmd;
  49         unsigned long timeout;
  50         u32 intr;
  51         int ret = 0;
  52         u16 status;
  53
  54         cmd = buf;
  55         cmd->id = cpu_to_le16(id);
  56         cmd->status = 0;
  57
  58         WARN_ON(len % 4 != 0);
  59
  60         wl1271_spi_write(wl, wl->cmd_box_addr, buf, len, false);
  61
  62         wl1271_spi_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
  63
  64         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  65
  66         intr = wl1271_spi_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  67         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  68                 if (time_after(jiffies, timeout)) {
  69                         wl1271_error("command complete timeout");
  70                         ret = -ETIMEDOUT;
  71                         goto out;
  72                 }
  73
  74                 msleep(1);
  75
  76                 intr = wl1271_spi_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  77         }
  78
  79         /* read back the status code of the command */
  80         if (res_len == 0)
  81                 res_len = sizeof(struct wl1271_cmd_header);
  82         wl1271_spi_read(wl, wl->cmd_box_addr, cmd, res_len, false);
  83
  84         status = le16_to_cpu(cmd->status);
  85         if (status != CMD_STATUS_SUCCESS) {
  86                 wl1271_error("command execute failure %d", status);
  87                 ret = -EIO;
  88         }
  89
  90         wl1271_spi_write32(wl, ACX_REG_INTERRUPT_ACK,
  91                            WL1271_ACX_INTR_CMD_COMPLETE);
  92
  93 out:
  94         return ret;
  95 }
  96
  97 static int wl1271_cmd_cal_channel_tune(struct wl1271 *wl)
  98 {
  99         struct wl1271_cmd_cal_channel_tune *cmd;
 100         int ret = 0;
 101
 102         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 103         if (!cmd)
 104                 return -ENOMEM;
 105
 106         cmd->test.id = TEST_CMD_CHANNEL_TUNE;
 107
 108         cmd->band = WL1271_CHANNEL_TUNE_BAND_2_4;
 109         /* set up any channel, 7 is in the middle of the range */
 110         cmd->channel = 7;
 111
 112         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 113         if (ret < 0)
 114                 wl1271_warning("TEST_CMD_CHANNEL_TUNE failed");
 115
 116         kfree(cmd);
 117         return ret;
 118 }
 119
 120 static int wl1271_cmd_cal_update_ref_point(struct wl1271 *wl)
 121 {
 122         struct wl1271_cmd_cal_update_ref_point *cmd;
 123         int ret = 0;
 124
 125         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 126         if (!cmd)
 127                 return -ENOMEM;
 128
 129         cmd->test.id = TEST_CMD_UPDATE_PD_REFERENCE_POINT;
 130
 131         /* FIXME: still waiting for the correct values */
 132         cmd->ref_power    = 0;
 133         cmd->ref_detector = 0;
 134
 135         cmd->sub_band     = WL1271_PD_REFERENCE_POINT_BAND_B_G;
 136
 137         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 138         if (ret < 0)
 139                 wl1271_warning("TEST_CMD_UPDATE_PD_REFERENCE_POINT failed");
 140
 141         kfree(cmd);
 142         return ret;
 143 }
 144
 145 static int wl1271_cmd_cal_p2g(struct wl1271 *wl)
 146 {
 147         struct wl1271_cmd_cal_p2g *cmd;
 148         int ret = 0;
 149
 150         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 151         if (!cmd)
 152                 return -ENOMEM;
 153
 154         cmd->test.id = TEST_CMD_P2G_CAL;
 155
 156         cmd->sub_band_mask = WL1271_CAL_P2G_BAND_B_G;
 157
 158         ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
 159         if (ret < 0)
 160                 wl1271_warning("TEST_CMD_P2G_CAL failed");
 161
 162         kfree(cmd);
 163         return ret;
 164 }
 165
 166 static int wl1271_cmd_cal(struct wl1271 *wl)
 167 {
 168         /*
 169          * FIXME: we must make sure that we're not sleeping when calibration
 170          * is done
 171          */
 172         int ret;
 173
 174         wl1271_notice("performing tx calibration");
 175
 176         ret = wl1271_cmd_cal_channel_tune(wl);
 177         if (ret < 0)
 178                 return ret;
 179
 180         ret = wl1271_cmd_cal_update_ref_point(wl);
 181         if (ret < 0)
 182                 return ret;
 183
 184         ret = wl1271_cmd_cal_p2g(wl);
 185         if (ret < 0)
 186                 return ret;
 187
 188         return ret;
 189 }
 190
 191 int wl1271_cmd_general_parms(struct wl1271 *wl)
 192 {
 193         struct wl1271_general_parms_cmd *gen_parms;
 194         int ret;
 195
 196         if (!wl->nvs)
 197                 return -ENODEV;
 198
 199         gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
 200         if (!gen_parms)
 201                 return -ENOMEM;
 202
 203         gen_parms->test.id = TEST_CMD_INI_FILE_GENERAL_PARAM;
 204
 205         memcpy(gen_parms->params, wl->nvs->general_params,
 206                WL1271_NVS_GENERAL_PARAMS_SIZE);
 207
 208         ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), 0);
 209         if (ret < 0)
 210                 wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");
 211
 212         kfree(gen_parms);
 213         return ret;
 214 }
 215
 216 int wl1271_cmd_radio_parms(struct wl1271 *wl)
 217 {
 218         struct wl1271_radio_parms_cmd *radio_parms;
 219         struct conf_radio_parms *rparam = &wl->conf.init.radioparam;
 220         int ret;
 221
 222         if (!wl->nvs)
 223                 return -ENODEV;
 224
 225         radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
 226         if (!radio_parms)
 227                 return -ENOMEM;
 228
 229         radio_parms->test.id = TEST_CMD_INI_FILE_RADIO_PARAM;
 230
 231         memcpy(radio_parms->stat_radio_params, wl->nvs->stat_radio_params,
 232                WL1271_NVS_STAT_RADIO_PARAMS_SIZE);
 233         memcpy(radio_parms->dyn_radio_params,
 234                wl->nvs->dyn_radio_params[rparam->fem],
 235                WL1271_NVS_DYN_RADIO_PARAMS_SIZE);
 236
 237         /* FIXME: current NVS is missing 5GHz parameters */
 238
 239         wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_RADIO_PARAM: ",
 240                     radio_parms, sizeof(*radio_parms));
 241
 242         ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
 243         if (ret < 0)
 244                 wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");
 245
 246         kfree(radio_parms);
 247         return ret;
 248 }
 249
 250 int wl1271_cmd_join(struct wl1271 *wl)
 251 {
 252         static bool do_cal = true;
 253         struct wl1271_cmd_join *join;
 254         int ret, i;
 255         u8 *bssid;
 256
 257         /* FIXME: remove when we get calibration from the factory */
 258         if (do_cal) {
 259                 ret = wl1271_cmd_cal(wl);
 260                 if (ret < 0)
 261                         wl1271_warning("couldn't calibrate");
 262                 else
 263                         do_cal = false;
 264         }
 265
 266         join = kzalloc(sizeof(*join), GFP_KERNEL);
 267         if (!join) {
 268                 ret = -ENOMEM;
 269                 goto out;
 270         }
 271
 272         wl1271_debug(DEBUG_CMD, "cmd join");
 273
 274         /* Reverse order BSSID */
 275         bssid = (u8 *) &join->bssid_lsb;
 276         for (i = 0; i < ETH_ALEN; i++)
 277                 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
 278
 279         join->rx_config_options = cpu_to_le32(wl->rx_config);
 280         join->rx_filter_options = cpu_to_le32(wl->rx_filter);
 281         join->bss_type = wl->bss_type;
 282
 283         /*
 284          * FIXME: disable temporarily all filters because after commit
 285          * 9cef8737 "mac80211: fix managed mode BSSID handling" broke
 286          * association. The filter logic needs to be implemented properly
 287          * and once that is done, this hack can be removed.
 288          */
 289         join->rx_config_options = cpu_to_le32(0);
 290         join->rx_filter_options = cpu_to_le32(WL1271_DEFAULT_RX_FILTER);
 291
 292         if (wl->band == IEEE80211_BAND_2GHZ)
 293                 join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_1MBPS   |
 294                                                    CONF_HW_BIT_RATE_2MBPS   |
 295                                                    CONF_HW_BIT_RATE_5_5MBPS |
 296                                                    CONF_HW_BIT_RATE_11MBPS);
 297         else {
 298                 join->bss_type |= WL1271_JOIN_CMD_BSS_TYPE_5GHZ;
 299                 join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_6MBPS  |
 300                                                    CONF_HW_BIT_RATE_12MBPS |
 301                                                    CONF_HW_BIT_RATE_24MBPS);
 302         }
 303
 304         join->beacon_interval = cpu_to_le16(WL1271_DEFAULT_BEACON_INT);
 305         join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;
 306
 307         join->channel = wl->channel;
 308         join->ssid_len = wl->ssid_len;
 309         memcpy(join->ssid, wl->ssid, wl->ssid_len);
 310         join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;
 311
 312         /* increment the session counter */
 313         wl->session_counter++;
 314         if (wl->session_counter >= SESSION_COUNTER_MAX)
 315                 wl->session_counter = 0;
 316
 317         join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
 318
 319         /* reset TX security counters */
 320         wl->tx_security_last_seq = 0;
 321         wl->tx_security_seq_16 = 0;
 322         wl->tx_security_seq_32 = 0;
 323
 324         ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
 325         if (ret < 0) {
 326                 wl1271_error("failed to initiate cmd join");
 327                 goto out_free;
 328         }
 329
 330         /*
 331          * ugly hack: we should wait for JOIN_EVENT_COMPLETE_ID but to
 332          * simplify locking we just sleep instead, for now
 333          */
 334         msleep(10);
 335
 336 out_free:
 337         kfree(join);
 338
 339 out:
 340         return ret;
 341 }
 342
 343 /**
 344  * send test command to firmware
 345  *
 346  * @wl: wl struct
 347  * @buf: buffer containing the command, with all headers, must work with dma
 348  * @len: length of the buffer
 349  * @answer: is answer needed
 350  */
 351 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 352 {
 353         int ret;
 354         size_t res_len = 0;
 355
 356         wl1271_debug(DEBUG_CMD, "cmd test");
 357
 358         if (answer)
 359                 res_len = buf_len;
 360
 361         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 362
 363         if (ret < 0) {
 364                 wl1271_warning("TEST command failed");
 365                 return ret;
 366         }
 367
 368         return ret;
 369 }
 370
 371 /**
 372  * read acx from firmware
 373  *
 374  * @wl: wl struct
 375  * @id: acx id
 376  * @buf: buffer for the response, including all headers, must work with dma
 377  * @len: lenght of buf
 378  */
 379 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 380 {
 381         struct acx_header *acx = buf;
 382         int ret;
 383
 384         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 385
 386         acx->id = cpu_to_le16(id);
 387
 388         /* payload length, does not include any headers */
 389         acx->len = cpu_to_le16(len - sizeof(*acx));
 390
 391         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 392         if (ret < 0)
 393                 wl1271_error("INTERROGATE command failed");
 394
 395         return ret;
 396 }
 397
 398 /**
 399  * write acx value to firmware
 400  *
 401  * @wl: wl struct
 402  * @id: acx id
 403  * @buf: buffer containing acx, including all headers, must work with dma
 404  * @len: length of buf
 405  */
 406 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 407 {
 408         struct acx_header *acx = buf;
 409         int ret;
 410
 411         wl1271_debug(DEBUG_CMD, "cmd configure");
 412
 413         acx->id = cpu_to_le16(id);
 414
 415         /* payload length, does not include any headers */
 416         acx->len = cpu_to_le16(len - sizeof(*acx));
 417
 418         ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 419         if (ret < 0) {
 420                 wl1271_warning("CONFIGURE command NOK");
 421                 return ret;
 422         }
 423
 424         return 0;
 425 }
 426
 427 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 428 {
 429         struct cmd_enabledisable_path *cmd;
 430         int ret;
 431         u16 cmd_rx, cmd_tx;
 432
 433         wl1271_debug(DEBUG_CMD, "cmd data path");
 434
 435         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 436         if (!cmd) {
 437                 ret = -ENOMEM;
 438                 goto out;
 439         }
 440
 441         /* the channel here is only used for calibration, so hardcoded to 1 */
 442         cmd->channel = 1;
 443
 444         if (enable) {
 445                 cmd_rx = CMD_ENABLE_RX;
 446                 cmd_tx = CMD_ENABLE_TX;
 447         } else {
 448                 cmd_rx = CMD_DISABLE_RX;
 449                 cmd_tx = CMD_DISABLE_TX;
 450         }
 451
 452         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 453         if (ret < 0) {
 454                 wl1271_error("rx %s cmd for channel %d failed",
 455                              enable ? "start" : "stop", cmd->channel);
 456                 goto out;
 457         }
 458
 459         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 460                      enable ? "start" : "stop", cmd->channel);
 461
 462         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 463         if (ret < 0) {
 464                 wl1271_error("tx %s cmd for channel %d failed",
 465                              enable ? "start" : "stop", cmd->channel);
 466                 return ret;
 467         }
 468
 469         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 470                      enable ? "start" : "stop", cmd->channel);
 471
 472 out:
 473         kfree(cmd);
 474         return ret;
 475 }
 476
 477 int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode, bool send)
 478 {
 479         struct wl1271_cmd_ps_params *ps_params = NULL;
 480         int ret = 0;
 481
 482         /* FIXME: this should be in ps.c */
 483         ret = wl1271_acx_wake_up_conditions(wl);
 484         if (ret < 0) {
 485                 wl1271_error("couldn't set wake up conditions");
 486                 goto out;
 487         }
 488
 489         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 490
 491         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 492         if (!ps_params) {
 493                 ret = -ENOMEM;
 494                 goto out;
 495         }
 496
 497         ps_params->ps_mode = ps_mode;
 498         ps_params->send_null_data = send;
 499         ps_params->retries = 5;
 500         ps_params->hang_over_period = 128;
 501         ps_params->null_data_rate = cpu_to_le32(1); /* 1 Mbps */
 502
 503         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 504                               sizeof(*ps_params), 0);
 505         if (ret < 0) {
 506                 wl1271_error("cmd set_ps_mode failed");
 507                 goto out;
 508         }
 509
 510 out:
 511         kfree(ps_params);
 512         return ret;
 513 }
 514
 515 int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
 516                            size_t len)
 517 {
 518         struct cmd_read_write_memory *cmd;
 519         int ret = 0;
 520
 521         wl1271_debug(DEBUG_CMD, "cmd read memory");
 522
 523         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 524         if (!cmd) {
 525                 ret = -ENOMEM;
 526                 goto out;
 527         }
 528
 529         WARN_ON(len > MAX_READ_SIZE);
 530         len = min_t(size_t, len, MAX_READ_SIZE);
 531
 532         cmd->addr = cpu_to_le32(addr);
 533         cmd->size = cpu_to_le32(len);
 534
 535         ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd),
 536                               sizeof(*cmd));
 537         if (ret < 0) {
 538                 wl1271_error("read memory command failed: %d", ret);
 539                 goto out;
 540         }
 541
 542         /* the read command got in */
 543         memcpy(answer, cmd->value, len);
 544
 545 out:
 546         kfree(cmd);
 547         return ret;
 548 }
 549
 550 int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
 551                     u8 active_scan, u8 high_prio, u8 band,
 552                     u8 probe_requests)
 553 {
 554
 555         struct wl1271_cmd_trigger_scan_to *trigger = NULL;
 556         struct wl1271_cmd_scan *params = NULL;
 557         struct ieee80211_channel *channels;
 558         int i, j, n_ch, ret;
 559         u16 scan_options = 0;
 560         u8 ieee_band;
 561
 562         if (band == WL1271_SCAN_BAND_2_4_GHZ)
 563                 ieee_band = IEEE80211_BAND_2GHZ;
 564         else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled())
 565                 ieee_band = IEEE80211_BAND_2GHZ;
 566         else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled())
 567                 ieee_band = IEEE80211_BAND_5GHZ;
 568         else
 569                 return -EINVAL;
 570
 571         if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
 572                 return -EINVAL;
 573
 574         channels = wl->hw->wiphy->bands[ieee_band]->channels;
 575         n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;
 576
 577         if (test_bit(WL1271_FLAG_SCANNING, &wl->flags))
 578                 return -EINVAL;
 579
 580         params = kzalloc(sizeof(*params), GFP_KERNEL);
 581         if (!params)
 582                 return -ENOMEM;
 583
 584         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 585         params->params.rx_filter_options =
 586                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 587
 588         if (!active_scan)
 589                 scan_options |= WL1271_SCAN_OPT_PASSIVE;
 590         if (high_prio)
 591                 scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
 592         params->params.scan_options = cpu_to_le16(scan_options);
 593
 594         params->params.num_probe_requests = probe_requests;
 595         /* Let the fw autodetect suitable tx_rate for probes */
 596         params->params.tx_rate = 0;
 597         params->params.tid_trigger = 0;
 598         params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
 599
 600         if (band == WL1271_SCAN_BAND_DUAL)
 601                 params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
 602         else
 603                 params->params.band = band;
 604
 605         for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
 606                 if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
 607                         params->channels[j].min_duration =
 608                                 cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
 609                         params->channels[j].max_duration =
 610                                 cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
 611                         memset(&params->channels[j].bssid_lsb, 0xff, 4);
 612                         memset(&params->channels[j].bssid_msb, 0xff, 2);
 613                         params->channels[j].early_termination = 0;
 614                         params->channels[j].tx_power_att =
 615                                 WL1271_SCAN_CURRENT_TX_PWR;
 616                         params->channels[j].channel = channels[i].hw_value;
 617                         j++;
 618                 }
 619         }
 620
 621         params->params.num_channels = j;
 622
 623         if (len && ssid) {
 624                 params->params.ssid_len = len;
 625                 memcpy(params->params.ssid, ssid, len);
 626         }
 627
 628         ret = wl1271_cmd_build_probe_req(wl, ssid, len, ieee_band);
 629         if (ret < 0) {
 630                 wl1271_error("PROBE request template failed");
 631                 goto out;
 632         }
 633
 634         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
 635         if (!trigger) {
 636                 ret = -ENOMEM;
 637                 goto out;
 638         }
 639
 640         /* disable the timeout */
 641         trigger->timeout = 0;
 642
 643         ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
 644                               sizeof(*trigger), 0);
 645         if (ret < 0) {
 646                 wl1271_error("trigger scan to failed for hw scan");
 647                 goto out;
 648         }
 649
 650         wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 651
 652         set_bit(WL1271_FLAG_SCANNING, &wl->flags);
 653         if (wl1271_11a_enabled()) {
 654                 wl->scan.state = band;
 655                 if (band == WL1271_SCAN_BAND_DUAL) {
 656                         wl->scan.active = active_scan;
 657                         wl->scan.high_prio = high_prio;
 658                         wl->scan.probe_requests = probe_requests;
 659                         if (len && ssid) {
 660                                 wl->scan.ssid_len = len;
 661                                 memcpy(wl->scan.ssid, ssid, len);
 662                         } else
 663                                 wl->scan.ssid_len = 0;
 664                 }
 665         }
 666
 667         ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params), 0);
 668         if (ret < 0) {
 669                 wl1271_error("SCAN failed");
 670                 clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
 671                 goto out;
 672         }
 673
 674 out:
 675         kfree(params);
 676         return ret;
 677 }
 678
 679 int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
 680                             void *buf, size_t buf_len)
 681 {
 682         struct wl1271_cmd_template_set *cmd;
 683         int ret = 0;
 684
 685         wl1271_debug(DEBUG_CMD, "cmd template_set %d", template_id);
 686
 687         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
 688         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
 689
 690         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 691         if (!cmd) {
 692                 ret = -ENOMEM;
 693                 goto out;
 694         }
 695
 696         cmd->len = cpu_to_le16(buf_len);
 697         cmd->template_type = template_id;
 698         cmd->enabled_rates = cpu_to_le32(wl->conf.tx.rc_conf.enabled_rates);
 699         cmd->short_retry_limit = wl->conf.tx.rc_conf.short_retry_limit;
 700         cmd->long_retry_limit = wl->conf.tx.rc_conf.long_retry_limit;
 701
 702         if (buf)
 703                 memcpy(cmd->template_data, buf, buf_len);
 704
 705         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
 706         if (ret < 0) {
 707                 wl1271_warning("cmd set_template failed: %d", ret);
 708                 goto out_free;
 709         }
 710
 711 out_free:
 712         kfree(cmd);
 713
 714 out:
 715         return ret;
 716 }
 717
 718 static int wl1271_build_basic_rates(u8 *rates, u8 band)
 719 {
 720         u8 index = 0;
 721
 722         if (band == IEEE80211_BAND_2GHZ) {
 723                 rates[index++] =
 724                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 725                 rates[index++] =
 726                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 727                 rates[index++] =
 728                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 729                 rates[index++] =
 730                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 731         } else if (band == IEEE80211_BAND_5GHZ) {
 732                 rates[index++] =
 733                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB;
 734                 rates[index++] =
 735                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB;
 736                 rates[index++] =
 737                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
 738         } else {
 739                 wl1271_error("build_basic_rates invalid band: %d", band);
 740         }
 741
 742         return index;
 743 }
 744
 745 static int wl1271_build_extended_rates(u8 *rates, u8 band)
 746 {
 747         u8 index = 0;
 748
 749         if (band == IEEE80211_BAND_2GHZ) {
 750                 rates[index++] = IEEE80211_OFDM_RATE_6MB;
 751                 rates[index++] = IEEE80211_OFDM_RATE_9MB;
 752                 rates[index++] = IEEE80211_OFDM_RATE_12MB;
 753                 rates[index++] = IEEE80211_OFDM_RATE_18MB;
 754                 rates[index++] = IEEE80211_OFDM_RATE_24MB;
 755                 rates[index++] = IEEE80211_OFDM_RATE_36MB;
 756                 rates[index++] = IEEE80211_OFDM_RATE_48MB;
 757                 rates[index++] = IEEE80211_OFDM_RATE_54MB;
 758         } else if (band == IEEE80211_BAND_5GHZ) {
 759                 rates[index++] =
 760                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB;
 761                 rates[index++] =
 762                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB;
 763                 rates[index++] =
 764                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
 765                 rates[index++] =
 766                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB;
 767                 rates[index++] =
 768                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB;
 769                 rates[index++] =
 770                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB;
 771         } else {
 772                 wl1271_error("build_basic_rates invalid band: %d", band);
 773         }
 774
 775         return index;
 776 }
 777
 778 int wl1271_cmd_build_null_data(struct wl1271 *wl)
 779 {
 780         struct wl12xx_null_data_template template;
 781
 782         if (!is_zero_ether_addr(wl->bssid)) {
 783                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
 784                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
 785         } else {
 786                 memset(template.header.da, 0xff, ETH_ALEN);
 787                 memset(template.header.bssid, 0xff, ETH_ALEN);
 788         }
 789
 790         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 791         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
 792                                                 IEEE80211_STYPE_NULLFUNC |
 793                                                 IEEE80211_FCTL_TODS);
 794
 795         return wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, &template,
 796                                        sizeof(template));
 797
 798 }
 799
 800 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
 801 {
 802         struct wl12xx_ps_poll_template template;
 803
 804         memcpy(template.bssid, wl->bssid, ETH_ALEN);
 805         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
 806
 807         /* aid in PS-Poll has its two MSBs each set to 1 */
 808         template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
 809
 810         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 811
 812         return wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, &template,
 813                                        sizeof(template));
 814
 815 }
 816
 817 int wl1271_cmd_build_probe_req(struct wl1271 *wl, u8 *ssid, size_t ssid_len,
 818                                u8 band)
 819 {
 820         struct wl12xx_probe_req_template template;
 821         struct wl12xx_ie_rates *rates;
 822         char *ptr;
 823         u16 size;
 824         int ret;
 825
 826         ptr = (char *)&template;
 827         size = sizeof(struct ieee80211_header);
 828
 829         memset(template.header.da, 0xff, ETH_ALEN);
 830         memset(template.header.bssid, 0xff, ETH_ALEN);
 831         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 832         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 833
 834         /* IEs */
 835         /* SSID */
 836         template.ssid.header.id = WLAN_EID_SSID;
 837         template.ssid.header.len = ssid_len;
 838         if (ssid_len && ssid)
 839                 memcpy(template.ssid.ssid, ssid, ssid_len);
 840         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 841         ptr += size;
 842
 843         /* Basic Rates */
 844         rates = (struct wl12xx_ie_rates *)ptr;
 845         rates->header.id = WLAN_EID_SUPP_RATES;
 846         rates->header.len = wl1271_build_basic_rates(rates->rates, band);
 847         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 848         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 849
 850         /* Extended rates */
 851         rates = (struct wl12xx_ie_rates *)ptr;
 852         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 853         rates->header.len = wl1271_build_extended_rates(rates->rates, band);
 854         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 855
 856         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 857
 858         if (band == IEEE80211_BAND_2GHZ)
 859                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
 860                                               &template, size);
 861         else
 862                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
 863                                               &template, size);
 864         return ret;
 865 }
 866
 867 int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
 868 {
 869         struct wl1271_cmd_set_keys *cmd;
 870         int ret = 0;
 871
 872         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
 873
 874         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 875         if (!cmd) {
 876                 ret = -ENOMEM;
 877                 goto out;
 878         }
 879
 880         cmd->id = id;
 881         cmd->key_action = cpu_to_le16(KEY_SET_ID);
 882         cmd->key_type = KEY_WEP;
 883
 884         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 885         if (ret < 0) {
 886                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
 887                 goto out;
 888         }
 889
 890 out:
 891         kfree(cmd);
 892
 893         return ret;
 894 }
 895
 896 int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 897                        u8 key_size, const u8 *key, const u8 *addr,
 898                        u32 tx_seq_32, u16 tx_seq_16)
 899 {
 900         struct wl1271_cmd_set_keys *cmd;
 901         int ret = 0;
 902
 903         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 904         if (!cmd) {
 905                 ret = -ENOMEM;
 906                 goto out;
 907         }
 908
 909         if (key_type != KEY_WEP)
 910                 memcpy(cmd->addr, addr, ETH_ALEN);
 911
 912         cmd->key_action = cpu_to_le16(action);
 913         cmd->key_size = key_size;
 914         cmd->key_type = key_type;
 915
 916         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
 917         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
 918
 919         /* we have only one SSID profile */
 920         cmd->ssid_profile = 0;
 921
 922         cmd->id = id;
 923
 924         if (key_type == KEY_TKIP) {
 925                 /*
 926                  * We get the key in the following form:
 927                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 928                  * but the target is expecting:
 929                  * TKIP - RX MIC - TX MIC
 930                  */
 931                 memcpy(cmd->key, key, 16);
 932                 memcpy(cmd->key + 16, key + 24, 8);
 933                 memcpy(cmd->key + 24, key + 16, 8);
 934
 935         } else {
 936                 memcpy(cmd->key, key, key_size);
 937         }
 938
 939         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
 940
 941         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 942         if (ret < 0) {
 943                 wl1271_warning("could not set keys");
 944         goto out;
 945         }
 946
 947 out:
 948         kfree(cmd);
 949
 950         return ret;
 951 }
 952
 953 int wl1271_cmd_disconnect(struct wl1271 *wl)
 954 {
 955         struct wl1271_cmd_disconnect *cmd;
 956         int ret = 0;
 957
 958         wl1271_debug(DEBUG_CMD, "cmd disconnect");
 959
 960         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 961         if (!cmd) {
 962                 ret = -ENOMEM;
 963                 goto out;
 964         }
 965
 966         cmd->rx_config_options = cpu_to_le32(wl->rx_config);
 967         cmd->rx_filter_options = cpu_to_le32(wl->rx_filter);
 968         /* disconnect reason is not used in immediate disconnections */
 969         cmd->type = DISCONNECT_IMMEDIATE;
 970
 971         ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
 972         if (ret < 0) {
 973                 wl1271_error("failed to send disconnect command");
 974                 goto out_free;
 975         }
 976
 977 out_free:
 978         kfree(cmd);
 979
 980 out:
 981         return ret;
 982 }