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 <[email protected]>
   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_io.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_write(wl, wl->cmd_box_addr, buf, len, false);
  61
  62         wl1271_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
  63
  64         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  65
  66         intr = wl1271_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_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_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_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, u8 bss_type)
 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 = 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 = 0;
 322
 323         ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
 324         if (ret < 0) {
 325                 wl1271_error("failed to initiate cmd join");
 326                 goto out_free;
 327         }
 328
 329         /*
 330          * ugly hack: we should wait for JOIN_EVENT_COMPLETE_ID but to
 331          * simplify locking we just sleep instead, for now
 332          */
 333         msleep(10);
 334
 335 out_free:
 336         kfree(join);
 337
 338 out:
 339         return ret;
 340 }
 341
 342 /**
 343  * send test command to firmware
 344  *
 345  * @wl: wl struct
 346  * @buf: buffer containing the command, with all headers, must work with dma
 347  * @len: length of the buffer
 348  * @answer: is answer needed
 349  */
 350 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 351 {
 352         int ret;
 353         size_t res_len = 0;
 354
 355         wl1271_debug(DEBUG_CMD, "cmd test");
 356
 357         if (answer)
 358                 res_len = buf_len;
 359
 360         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 361
 362         if (ret < 0) {
 363                 wl1271_warning("TEST command failed");
 364                 return ret;
 365         }
 366
 367         return ret;
 368 }
 369
 370 /**
 371  * read acx from firmware
 372  *
 373  * @wl: wl struct
 374  * @id: acx id
 375  * @buf: buffer for the response, including all headers, must work with dma
 376  * @len: lenght of buf
 377  */
 378 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 379 {
 380         struct acx_header *acx = buf;
 381         int ret;
 382
 383         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 384
 385         acx->id = cpu_to_le16(id);
 386
 387         /* payload length, does not include any headers */
 388         acx->len = cpu_to_le16(len - sizeof(*acx));
 389
 390         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 391         if (ret < 0)
 392                 wl1271_error("INTERROGATE command failed");
 393
 394         return ret;
 395 }
 396
 397 /**
 398  * write acx value to firmware
 399  *
 400  * @wl: wl struct
 401  * @id: acx id
 402  * @buf: buffer containing acx, including all headers, must work with dma
 403  * @len: length of buf
 404  */
 405 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 406 {
 407         struct acx_header *acx = buf;
 408         int ret;
 409
 410         wl1271_debug(DEBUG_CMD, "cmd configure");
 411
 412         acx->id = cpu_to_le16(id);
 413
 414         /* payload length, does not include any headers */
 415         acx->len = cpu_to_le16(len - sizeof(*acx));
 416
 417         ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 418         if (ret < 0) {
 419                 wl1271_warning("CONFIGURE command NOK");
 420                 return ret;
 421         }
 422
 423         return 0;
 424 }
 425
 426 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 427 {
 428         struct cmd_enabledisable_path *cmd;
 429         int ret;
 430         u16 cmd_rx, cmd_tx;
 431
 432         wl1271_debug(DEBUG_CMD, "cmd data path");
 433
 434         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 435         if (!cmd) {
 436                 ret = -ENOMEM;
 437                 goto out;
 438         }
 439
 440         /* the channel here is only used for calibration, so hardcoded to 1 */
 441         cmd->channel = 1;
 442
 443         if (enable) {
 444                 cmd_rx = CMD_ENABLE_RX;
 445                 cmd_tx = CMD_ENABLE_TX;
 446         } else {
 447                 cmd_rx = CMD_DISABLE_RX;
 448                 cmd_tx = CMD_DISABLE_TX;
 449         }
 450
 451         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 452         if (ret < 0) {
 453                 wl1271_error("rx %s cmd for channel %d failed",
 454                              enable ? "start" : "stop", cmd->channel);
 455                 goto out;
 456         }
 457
 458         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 459                      enable ? "start" : "stop", cmd->channel);
 460
 461         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 462         if (ret < 0) {
 463                 wl1271_error("tx %s cmd for channel %d failed",
 464                              enable ? "start" : "stop", cmd->channel);
 465                 return ret;
 466         }
 467
 468         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 469                      enable ? "start" : "stop", cmd->channel);
 470
 471 out:
 472         kfree(cmd);
 473         return ret;
 474 }
 475
 476 int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode, bool send)
 477 {
 478         struct wl1271_cmd_ps_params *ps_params = NULL;
 479         int ret = 0;
 480
 481         /* FIXME: this should be in ps.c */
 482         ret = wl1271_acx_wake_up_conditions(wl);
 483         if (ret < 0) {
 484                 wl1271_error("couldn't set wake up conditions");
 485                 goto out;
 486         }
 487
 488         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 489
 490         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 491         if (!ps_params) {
 492                 ret = -ENOMEM;
 493                 goto out;
 494         }
 495
 496         ps_params->ps_mode = ps_mode;
 497         ps_params->send_null_data = send;
 498         ps_params->retries = 5;
 499         ps_params->hang_over_period = 128;
 500         ps_params->null_data_rate = cpu_to_le32(1); /* 1 Mbps */
 501
 502         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 503                               sizeof(*ps_params), 0);
 504         if (ret < 0) {
 505                 wl1271_error("cmd set_ps_mode failed");
 506                 goto out;
 507         }
 508
 509 out:
 510         kfree(ps_params);
 511         return ret;
 512 }
 513
 514 int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
 515                            size_t len)
 516 {
 517         struct cmd_read_write_memory *cmd;
 518         int ret = 0;
 519
 520         wl1271_debug(DEBUG_CMD, "cmd read memory");
 521
 522         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 523         if (!cmd) {
 524                 ret = -ENOMEM;
 525                 goto out;
 526         }
 527
 528         WARN_ON(len > MAX_READ_SIZE);
 529         len = min_t(size_t, len, MAX_READ_SIZE);
 530
 531         cmd->addr = cpu_to_le32(addr);
 532         cmd->size = cpu_to_le32(len);
 533
 534         ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd),
 535                               sizeof(*cmd));
 536         if (ret < 0) {
 537                 wl1271_error("read memory command failed: %d", ret);
 538                 goto out;
 539         }
 540
 541         /* the read command got in */
 542         memcpy(answer, cmd->value, len);
 543
 544 out:
 545         kfree(cmd);
 546         return ret;
 547 }
 548
 549 int wl1271_cmd_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
 550                     const u8 *ie, size_t ie_len, u8 active_scan,
 551                     u8 high_prio, u8 band, u8 probe_requests)
 552 {
 553
 554         struct wl1271_cmd_trigger_scan_to *trigger = NULL;
 555         struct wl1271_cmd_scan *params = NULL;
 556         struct ieee80211_channel *channels;
 557         int i, j, n_ch, ret;
 558         u16 scan_options = 0;
 559         u8 ieee_band;
 560
 561         if (band == WL1271_SCAN_BAND_2_4_GHZ)
 562                 ieee_band = IEEE80211_BAND_2GHZ;
 563         else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled())
 564                 ieee_band = IEEE80211_BAND_2GHZ;
 565         else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled())
 566                 ieee_band = IEEE80211_BAND_5GHZ;
 567         else
 568                 return -EINVAL;
 569
 570         if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
 571                 return -EINVAL;
 572
 573         channels = wl->hw->wiphy->bands[ieee_band]->channels;
 574         n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;
 575
 576         if (test_bit(WL1271_FLAG_SCANNING, &wl->flags))
 577                 return -EINVAL;
 578
 579         params = kzalloc(sizeof(*params), GFP_KERNEL);
 580         if (!params)
 581                 return -ENOMEM;
 582
 583         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 584         params->params.rx_filter_options =
 585                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 586
 587         if (!active_scan)
 588                 scan_options |= WL1271_SCAN_OPT_PASSIVE;
 589         if (high_prio)
 590                 scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
 591         params->params.scan_options = cpu_to_le16(scan_options);
 592
 593         params->params.num_probe_requests = probe_requests;
 594         /* Let the fw autodetect suitable tx_rate for probes */
 595         params->params.tx_rate = 0;
 596         params->params.tid_trigger = 0;
 597         params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
 598
 599         if (band == WL1271_SCAN_BAND_DUAL)
 600                 params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
 601         else
 602                 params->params.band = band;
 603
 604         for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
 605                 if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
 606                         params->channels[j].min_duration =
 607                                 cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
 608                         params->channels[j].max_duration =
 609                                 cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
 610                         memset(&params->channels[j].bssid_lsb, 0xff, 4);
 611                         memset(&params->channels[j].bssid_msb, 0xff, 2);
 612                         params->channels[j].early_termination = 0;
 613                         params->channels[j].tx_power_att =
 614                                 WL1271_SCAN_CURRENT_TX_PWR;
 615                         params->channels[j].channel = channels[i].hw_value;
 616                         j++;
 617                 }
 618         }
 619
 620         params->params.num_channels = j;
 621
 622         if (ssid_len && ssid) {
 623                 params->params.ssid_len = ssid_len;
 624                 memcpy(params->params.ssid, ssid, ssid_len);
 625         }
 626
 627         ret = wl1271_cmd_build_probe_req(wl, ssid, ssid_len,
 628                                          ie, ie_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 (ssid_len && ssid) {
 660                                 wl->scan.ssid_len = ssid_len;
 661                                 memcpy(wl->scan.ssid, 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 int wl1271_cmd_build_null_data(struct wl1271 *wl)
 719 {
 720         struct sk_buff *skb;
 721         int ret = 0;
 722
 723         skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 724         if (!skb)
 725                 goto out;
 726
 727         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, skb->data,
 728                                       skb->len);
 729
 730 out:
 731         dev_kfree_skb(skb);
 732         return ret;
 733
 734 }
 735
 736 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
 737 {
 738         struct sk_buff *skb;
 739         int ret = 0;
 740
 741         skb = ieee80211_pspoll_get(wl->hw, wl->vif);
 742         if (!skb)
 743                 goto out;
 744
 745         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, skb->data,
 746                                       skb->len);
 747
 748 out:
 749         dev_kfree_skb(skb);
 750         return ret;
 751 }
 752
 753 int wl1271_cmd_build_probe_req(struct wl1271 *wl,
 754                                const u8 *ssid, size_t ssid_len,
 755                                const u8 *ie, size_t ie_len, u8 band)
 756 {
 757         struct sk_buff *skb;
 758         int ret;
 759
 760         skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
 761                                      ie, ie_len);
 762         if (!skb) {
 763                 ret = -ENOMEM;
 764                 goto out;
 765         }
 766
 767         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", skb->data, skb->len);
 768
 769         if (band == IEEE80211_BAND_2GHZ)
 770                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
 771                                               skb->data, skb->len);
 772         else
 773                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
 774                                               skb->data, skb->len);
 775
 776 out:
 777         dev_kfree_skb(skb);
 778         return ret;
 779 }
 780
 781 int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
 782 {
 783         struct wl1271_cmd_set_keys *cmd;
 784         int ret = 0;
 785
 786         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
 787
 788         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 789         if (!cmd) {
 790                 ret = -ENOMEM;
 791                 goto out;
 792         }
 793
 794         cmd->id = id;
 795         cmd->key_action = cpu_to_le16(KEY_SET_ID);
 796         cmd->key_type = KEY_WEP;
 797
 798         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 799         if (ret < 0) {
 800                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
 801                 goto out;
 802         }
 803
 804 out:
 805         kfree(cmd);
 806
 807         return ret;
 808 }
 809
 810 int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 811                        u8 key_size, const u8 *key, const u8 *addr,
 812                        u32 tx_seq_32, u16 tx_seq_16)
 813 {
 814         struct wl1271_cmd_set_keys *cmd;
 815         int ret = 0;
 816
 817         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 818         if (!cmd) {
 819                 ret = -ENOMEM;
 820                 goto out;
 821         }
 822
 823         if (key_type != KEY_WEP)
 824                 memcpy(cmd->addr, addr, ETH_ALEN);
 825
 826         cmd->key_action = cpu_to_le16(action);
 827         cmd->key_size = key_size;
 828         cmd->key_type = key_type;
 829
 830         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
 831         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
 832
 833         /* we have only one SSID profile */
 834         cmd->ssid_profile = 0;
 835
 836         cmd->id = id;
 837
 838         if (key_type == KEY_TKIP) {
 839                 /*
 840                  * We get the key in the following form:
 841                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 842                  * but the target is expecting:
 843                  * TKIP - RX MIC - TX MIC
 844                  */
 845                 memcpy(cmd->key, key, 16);
 846                 memcpy(cmd->key + 16, key + 24, 8);
 847                 memcpy(cmd->key + 24, key + 16, 8);
 848
 849         } else {
 850                 memcpy(cmd->key, key, key_size);
 851         }
 852
 853         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
 854
 855         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 856         if (ret < 0) {
 857                 wl1271_warning("could not set keys");
 858         goto out;
 859         }
 860
 861 out:
 862         kfree(cmd);
 863
 864         return ret;
 865 }
 866
 867 int wl1271_cmd_disconnect(struct wl1271 *wl)
 868 {
 869         struct wl1271_cmd_disconnect *cmd;
 870         int ret = 0;
 871
 872         wl1271_debug(DEBUG_CMD, "cmd disconnect");
 873
 874         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 875         if (!cmd) {
 876                 ret = -ENOMEM;
 877                 goto out;
 878         }
 879
 880         cmd->rx_config_options = cpu_to_le32(wl->rx_config);
 881         cmd->rx_filter_options = cpu_to_le32(wl->rx_filter);
 882         /* disconnect reason is not used in immediate disconnections */
 883         cmd->type = DISCONNECT_IMMEDIATE;
 884
 885         ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
 886         if (ret < 0) {
 887                 wl1271_error("failed to send disconnect command");
 888                 goto out_free;
 889         }
 890
 891 out_free:
 892         kfree(cmd);
 893
 894 out:
 895         return ret;
 896 }