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         struct conf_general_parms *g = &wl->conf.init.genparam;
 195         int ret;
 196
 197         gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
 198         if (!gen_parms)
 199                 return -ENOMEM;
 200
 201         gen_parms->test.id = TEST_CMD_INI_FILE_GENERAL_PARAM;
 202
 203         gen_parms->ref_clk = g->ref_clk;
 204         gen_parms->settling_time = g->settling_time;
 205         gen_parms->clk_valid_on_wakeup = g->clk_valid_on_wakeup;
 206         gen_parms->dc2dcmode = g->dc2dcmode;
 207         gen_parms->single_dual_band = g->single_dual_band;
 208         gen_parms->tx_bip_fem_autodetect = g->tx_bip_fem_autodetect;
 209         gen_parms->tx_bip_fem_manufacturer = g->tx_bip_fem_manufacturer;
 210         gen_parms->settings = g->settings;
 211
 212         ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), 0);
 213         if (ret < 0)
 214                 wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");
 215
 216         kfree(gen_parms);
 217         return ret;
 218 }
 219
 220 int wl1271_cmd_radio_parms(struct wl1271 *wl)
 221 {
 222         struct wl1271_radio_parms_cmd *radio_parms;
 223         struct conf_radio_parms *r = &wl->conf.init.radioparam;
 224         int i, ret;
 225
 226         radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
 227         if (!radio_parms)
 228                 return -ENOMEM;
 229
 230         radio_parms->test.id = TEST_CMD_INI_FILE_RADIO_PARAM;
 231
 232         /* Static radio parameters */
 233         radio_parms->rx_trace_loss = r->rx_trace_loss;
 234         radio_parms->tx_trace_loss = r->tx_trace_loss;
 235         memcpy(radio_parms->rx_rssi_and_proc_compens,
 236                r->rx_rssi_and_proc_compens,
 237                CONF_RSSI_AND_PROCESS_COMPENSATION_SIZE);
 238
 239         memcpy(radio_parms->rx_trace_loss_5, r->rx_trace_loss_5,
 240                CONF_NUMBER_OF_SUB_BANDS_5);
 241         memcpy(radio_parms->tx_trace_loss_5, r->tx_trace_loss_5,
 242                CONF_NUMBER_OF_SUB_BANDS_5);
 243         memcpy(radio_parms->rx_rssi_and_proc_compens_5,
 244                r->rx_rssi_and_proc_compens_5,
 245                CONF_RSSI_AND_PROCESS_COMPENSATION_SIZE);
 246
 247         /* Dynamic radio parameters */
 248         radio_parms->tx_ref_pd_voltage = cpu_to_le16(r->tx_ref_pd_voltage);
 249         radio_parms->tx_ref_power = r->tx_ref_power;
 250         radio_parms->tx_offset_db = r->tx_offset_db;
 251
 252         memcpy(radio_parms->tx_rate_limits_normal, r->tx_rate_limits_normal,
 253                CONF_NUMBER_OF_RATE_GROUPS);
 254         memcpy(radio_parms->tx_rate_limits_degraded, r->tx_rate_limits_degraded,
 255                CONF_NUMBER_OF_RATE_GROUPS);
 256
 257         memcpy(radio_parms->tx_channel_limits_11b, r->tx_channel_limits_11b,
 258                CONF_NUMBER_OF_CHANNELS_2_4);
 259         memcpy(radio_parms->tx_channel_limits_ofdm, r->tx_channel_limits_ofdm,
 260                CONF_NUMBER_OF_CHANNELS_2_4);
 261         memcpy(radio_parms->tx_pdv_rate_offsets, r->tx_pdv_rate_offsets,
 262                CONF_NUMBER_OF_RATE_GROUPS);
 263         memcpy(radio_parms->tx_ibias, r->tx_ibias, CONF_NUMBER_OF_RATE_GROUPS);
 264
 265         radio_parms->rx_fem_insertion_loss = r->rx_fem_insertion_loss;
 266
 267         for (i = 0; i < CONF_NUMBER_OF_SUB_BANDS_5; i++)
 268                 radio_parms->tx_ref_pd_voltage_5[i] =
 269                         cpu_to_le16(r->tx_ref_pd_voltage_5[i]);
 270         memcpy(radio_parms->tx_ref_power_5, r->tx_ref_power_5,
 271                CONF_NUMBER_OF_SUB_BANDS_5);
 272         memcpy(radio_parms->tx_offset_db_5, r->tx_offset_db_5,
 273                CONF_NUMBER_OF_SUB_BANDS_5);
 274         memcpy(radio_parms->tx_rate_limits_normal_5,
 275                r->tx_rate_limits_normal_5, CONF_NUMBER_OF_RATE_GROUPS);
 276         memcpy(radio_parms->tx_rate_limits_degraded_5,
 277                r->tx_rate_limits_degraded_5, CONF_NUMBER_OF_RATE_GROUPS);
 278         memcpy(radio_parms->tx_channel_limits_ofdm_5,
 279                r->tx_channel_limits_ofdm_5, CONF_NUMBER_OF_CHANNELS_5);
 280         memcpy(radio_parms->tx_pdv_rate_offsets_5, r->tx_pdv_rate_offsets_5,
 281                CONF_NUMBER_OF_RATE_GROUPS);
 282         memcpy(radio_parms->tx_ibias_5, r->tx_ibias_5,
 283                CONF_NUMBER_OF_RATE_GROUPS);
 284         memcpy(radio_parms->rx_fem_insertion_loss_5,
 285                r->rx_fem_insertion_loss_5, CONF_NUMBER_OF_SUB_BANDS_5);
 286
 287         wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_RADIO_PARAM: ",
 288                     radio_parms, sizeof(*radio_parms));
 289
 290         ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
 291         if (ret < 0)
 292                 wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");
 293
 294         kfree(radio_parms);
 295         return ret;
 296 }
 297
 298 int wl1271_cmd_join(struct wl1271 *wl)
 299 {
 300         static bool do_cal = true;
 301         struct wl1271_cmd_join *join;
 302         int ret, i;
 303         u8 *bssid;
 304
 305         /* FIXME: remove when we get calibration from the factory */
 306         if (do_cal) {
 307                 ret = wl1271_cmd_cal(wl);
 308                 if (ret < 0)
 309                         wl1271_warning("couldn't calibrate");
 310                 else
 311                         do_cal = false;
 312         }
 313
 314         /* FIXME: This is a workaround, because with the current stack, we
 315          * cannot know when we have disassociated.  So, if we have already
 316          * joined, we disconnect before joining again. */
 317         if (wl->joined) {
 318                 ret = wl1271_cmd_disconnect(wl);
 319                 if (ret < 0) {
 320                         wl1271_error("failed to disconnect before rejoining");
 321                         goto out;
 322                 }
 323
 324                 wl->joined = false;
 325         }
 326
 327         join = kzalloc(sizeof(*join), GFP_KERNEL);
 328         if (!join) {
 329                 ret = -ENOMEM;
 330                 goto out;
 331         }
 332
 333         wl1271_debug(DEBUG_CMD, "cmd join");
 334
 335         /* Reverse order BSSID */
 336         bssid = (u8 *) &join->bssid_lsb;
 337         for (i = 0; i < ETH_ALEN; i++)
 338                 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
 339
 340         join->rx_config_options = cpu_to_le32(wl->rx_config);
 341         join->rx_filter_options = cpu_to_le32(wl->rx_filter);
 342         join->bss_type = wl->bss_type;
 343
 344         /*
 345          * FIXME: disable temporarily all filters because after commit
 346          * 9cef8737 "mac80211: fix managed mode BSSID handling" broke
 347          * association. The filter logic needs to be implemented properly
 348          * and once that is done, this hack can be removed.
 349          */
 350         join->rx_config_options = cpu_to_le32(0);
 351         join->rx_filter_options = cpu_to_le32(WL1271_DEFAULT_RX_FILTER);
 352
 353         if (wl->band == IEEE80211_BAND_2GHZ)
 354                 join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_1MBPS   |
 355                                                    CONF_HW_BIT_RATE_2MBPS   |
 356                                                    CONF_HW_BIT_RATE_5_5MBPS |
 357                                                    CONF_HW_BIT_RATE_11MBPS);
 358         else {
 359                 join->bss_type |= WL1271_JOIN_CMD_BSS_TYPE_5GHZ;
 360                 join->basic_rate_set = cpu_to_le32(CONF_HW_BIT_RATE_6MBPS  |
 361                                                    CONF_HW_BIT_RATE_12MBPS |
 362                                                    CONF_HW_BIT_RATE_24MBPS);
 363         }
 364
 365         join->beacon_interval = cpu_to_le16(WL1271_DEFAULT_BEACON_INT);
 366         join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;
 367
 368         join->channel = wl->channel;
 369         join->ssid_len = wl->ssid_len;
 370         memcpy(join->ssid, wl->ssid, wl->ssid_len);
 371         join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;
 372
 373         /* increment the session counter */
 374         wl->session_counter++;
 375         if (wl->session_counter >= SESSION_COUNTER_MAX)
 376                 wl->session_counter = 0;
 377
 378         join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
 379
 380         /* reset TX security counters */
 381         wl->tx_security_last_seq = 0;
 382         wl->tx_security_seq_16 = 0;
 383         wl->tx_security_seq_32 = 0;
 384
 385         ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
 386         if (ret < 0) {
 387                 wl1271_error("failed to initiate cmd join");
 388                 goto out_free;
 389         }
 390
 391         wl->joined = true;
 392
 393         /*
 394          * ugly hack: we should wait for JOIN_EVENT_COMPLETE_ID but to
 395          * simplify locking we just sleep instead, for now
 396          */
 397         msleep(10);
 398
 399 out_free:
 400         kfree(join);
 401
 402 out:
 403         return ret;
 404 }
 405
 406 /**
 407  * send test command to firmware
 408  *
 409  * @wl: wl struct
 410  * @buf: buffer containing the command, with all headers, must work with dma
 411  * @len: length of the buffer
 412  * @answer: is answer needed
 413  */
 414 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 415 {
 416         int ret;
 417         size_t res_len = 0;
 418
 419         wl1271_debug(DEBUG_CMD, "cmd test");
 420
 421         if (answer)
 422                 res_len = buf_len;
 423
 424         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 425
 426         if (ret < 0) {
 427                 wl1271_warning("TEST command failed");
 428                 return ret;
 429         }
 430
 431         return ret;
 432 }
 433
 434 /**
 435  * read acx from firmware
 436  *
 437  * @wl: wl struct
 438  * @id: acx id
 439  * @buf: buffer for the response, including all headers, must work with dma
 440  * @len: lenght of buf
 441  */
 442 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 443 {
 444         struct acx_header *acx = buf;
 445         int ret;
 446
 447         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 448
 449         acx->id = cpu_to_le16(id);
 450
 451         /* payload length, does not include any headers */
 452         acx->len = cpu_to_le16(len - sizeof(*acx));
 453
 454         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 455         if (ret < 0)
 456                 wl1271_error("INTERROGATE command failed");
 457
 458         return ret;
 459 }
 460
 461 /**
 462  * write acx value to firmware
 463  *
 464  * @wl: wl struct
 465  * @id: acx id
 466  * @buf: buffer containing acx, including all headers, must work with dma
 467  * @len: length of buf
 468  */
 469 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 470 {
 471         struct acx_header *acx = buf;
 472         int ret;
 473
 474         wl1271_debug(DEBUG_CMD, "cmd configure");
 475
 476         acx->id = cpu_to_le16(id);
 477
 478         /* payload length, does not include any headers */
 479         acx->len = cpu_to_le16(len - sizeof(*acx));
 480
 481         ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 482         if (ret < 0) {
 483                 wl1271_warning("CONFIGURE command NOK");
 484                 return ret;
 485         }
 486
 487         return 0;
 488 }
 489
 490 int wl1271_cmd_data_path(struct wl1271 *wl, u8 channel, bool enable)
 491 {
 492         struct cmd_enabledisable_path *cmd;
 493         int ret;
 494         u16 cmd_rx, cmd_tx;
 495
 496         wl1271_debug(DEBUG_CMD, "cmd data path");
 497
 498         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 499         if (!cmd) {
 500                 ret = -ENOMEM;
 501                 goto out;
 502         }
 503
 504         cmd->channel = channel;
 505
 506         if (enable) {
 507                 cmd_rx = CMD_ENABLE_RX;
 508                 cmd_tx = CMD_ENABLE_TX;
 509         } else {
 510                 cmd_rx = CMD_DISABLE_RX;
 511                 cmd_tx = CMD_DISABLE_TX;
 512         }
 513
 514         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 515         if (ret < 0) {
 516                 wl1271_error("rx %s cmd for channel %d failed",
 517                              enable ? "start" : "stop", channel);
 518                 goto out;
 519         }
 520
 521         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 522                      enable ? "start" : "stop", channel);
 523
 524         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 525         if (ret < 0) {
 526                 wl1271_error("tx %s cmd for channel %d failed",
 527                              enable ? "start" : "stop", channel);
 528                 return ret;
 529         }
 530
 531         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 532                      enable ? "start" : "stop", channel);
 533
 534 out:
 535         kfree(cmd);
 536         return ret;
 537 }
 538
 539 int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode)
 540 {
 541         struct wl1271_cmd_ps_params *ps_params = NULL;
 542         int ret = 0;
 543
 544         /* FIXME: this should be in ps.c */
 545         ret = wl1271_acx_wake_up_conditions(wl);
 546         if (ret < 0) {
 547                 wl1271_error("couldn't set wake up conditions");
 548                 goto out;
 549         }
 550
 551         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 552
 553         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 554         if (!ps_params) {
 555                 ret = -ENOMEM;
 556                 goto out;
 557         }
 558
 559         ps_params->ps_mode = ps_mode;
 560         ps_params->send_null_data = 1;
 561         ps_params->retries = 5;
 562         ps_params->hang_over_period = 128;
 563         ps_params->null_data_rate = cpu_to_le32(1); /* 1 Mbps */
 564
 565         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 566                               sizeof(*ps_params), 0);
 567         if (ret < 0) {
 568                 wl1271_error("cmd set_ps_mode failed");
 569                 goto out;
 570         }
 571
 572 out:
 573         kfree(ps_params);
 574         return ret;
 575 }
 576
 577 int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
 578                            size_t len)
 579 {
 580         struct cmd_read_write_memory *cmd;
 581         int ret = 0;
 582
 583         wl1271_debug(DEBUG_CMD, "cmd read memory");
 584
 585         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 586         if (!cmd) {
 587                 ret = -ENOMEM;
 588                 goto out;
 589         }
 590
 591         WARN_ON(len > MAX_READ_SIZE);
 592         len = min_t(size_t, len, MAX_READ_SIZE);
 593
 594         cmd->addr = cpu_to_le32(addr);
 595         cmd->size = cpu_to_le32(len);
 596
 597         ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd),
 598                               sizeof(*cmd));
 599         if (ret < 0) {
 600                 wl1271_error("read memory command failed: %d", ret);
 601                 goto out;
 602         }
 603
 604         /* the read command got in */
 605         memcpy(answer, cmd->value, len);
 606
 607 out:
 608         kfree(cmd);
 609         return ret;
 610 }
 611
 612 int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
 613                     u8 active_scan, u8 high_prio, u8 band,
 614                     u8 probe_requests)
 615 {
 616
 617         struct wl1271_cmd_trigger_scan_to *trigger = NULL;
 618         struct wl1271_cmd_scan *params = NULL;
 619         struct ieee80211_channel *channels;
 620         int i, j, n_ch, ret;
 621         u16 scan_options = 0;
 622         u8 ieee_band;
 623
 624         if (band == WL1271_SCAN_BAND_2_4_GHZ)
 625                 ieee_band = IEEE80211_BAND_2GHZ;
 626         else if (band == WL1271_SCAN_BAND_DUAL && wl1271_11a_enabled())
 627                 ieee_band = IEEE80211_BAND_2GHZ;
 628         else if (band == WL1271_SCAN_BAND_5_GHZ && wl1271_11a_enabled())
 629                 ieee_band = IEEE80211_BAND_5GHZ;
 630         else
 631                 return -EINVAL;
 632
 633         if (wl->hw->wiphy->bands[ieee_band]->channels == NULL)
 634                 return -EINVAL;
 635
 636         channels = wl->hw->wiphy->bands[ieee_band]->channels;
 637         n_ch = wl->hw->wiphy->bands[ieee_band]->n_channels;
 638
 639         if (wl->scanning)
 640                 return -EINVAL;
 641
 642         params = kzalloc(sizeof(*params), GFP_KERNEL);
 643         if (!params)
 644                 return -ENOMEM;
 645
 646         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
 647         params->params.rx_filter_options =
 648                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
 649
 650         if (!active_scan)
 651                 scan_options |= WL1271_SCAN_OPT_PASSIVE;
 652         if (high_prio)
 653                 scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
 654         params->params.scan_options = cpu_to_le16(scan_options);
 655
 656         params->params.num_probe_requests = probe_requests;
 657         /* Let the fw autodetect suitable tx_rate for probes */
 658         params->params.tx_rate = 0;
 659         params->params.tid_trigger = 0;
 660         params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
 661
 662         if (band == WL1271_SCAN_BAND_DUAL)
 663                 params->params.band = WL1271_SCAN_BAND_2_4_GHZ;
 664         else
 665                 params->params.band = band;
 666
 667         for (i = 0, j = 0; i < n_ch && i < WL1271_SCAN_MAX_CHANNELS; i++) {
 668                 if (!(channels[i].flags & IEEE80211_CHAN_DISABLED)) {
 669                         params->channels[j].min_duration =
 670                                 cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
 671                         params->channels[j].max_duration =
 672                                 cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
 673                         memset(&params->channels[j].bssid_lsb, 0xff, 4);
 674                         memset(&params->channels[j].bssid_msb, 0xff, 2);
 675                         params->channels[j].early_termination = 0;
 676                         params->channels[j].tx_power_att =
 677                                 WL1271_SCAN_CURRENT_TX_PWR;
 678                         params->channels[j].channel = channels[i].hw_value;
 679                         j++;
 680                 }
 681         }
 682
 683         params->params.num_channels = j;
 684
 685         if (len && ssid) {
 686                 params->params.ssid_len = len;
 687                 memcpy(params->params.ssid, ssid, len);
 688         }
 689
 690         ret = wl1271_cmd_build_probe_req(wl, ssid, len, ieee_band);
 691         if (ret < 0) {
 692                 wl1271_error("PROBE request template failed");
 693                 goto out;
 694         }
 695
 696         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
 697         if (!trigger) {
 698                 ret = -ENOMEM;
 699                 goto out;
 700         }
 701
 702         /* disable the timeout */
 703         trigger->timeout = 0;
 704
 705         ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
 706                               sizeof(*trigger), 0);
 707         if (ret < 0) {
 708                 wl1271_error("trigger scan to failed for hw scan");
 709                 goto out;
 710         }
 711
 712         wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
 713
 714         wl->scanning = true;
 715         if (wl1271_11a_enabled()) {
 716                 wl->scan.state = band;
 717                 if (band == WL1271_SCAN_BAND_DUAL) {
 718                         wl->scan.active = active_scan;
 719                         wl->scan.high_prio = high_prio;
 720                         wl->scan.probe_requests = probe_requests;
 721                         if (len && ssid) {
 722                                 wl->scan.ssid_len = len;
 723                                 memcpy(wl->scan.ssid, ssid, len);
 724                         } else
 725                                 wl->scan.ssid_len = 0;
 726                 }
 727         }
 728
 729         ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params), 0);
 730         if (ret < 0) {
 731                 wl1271_error("SCAN failed");
 732                 wl->scanning = false;
 733                 goto out;
 734         }
 735
 736 out:
 737         kfree(params);
 738         return ret;
 739 }
 740
 741 int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
 742                             void *buf, size_t buf_len)
 743 {
 744         struct wl1271_cmd_template_set *cmd;
 745         int ret = 0;
 746
 747         wl1271_debug(DEBUG_CMD, "cmd template_set %d", template_id);
 748
 749         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
 750         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
 751
 752         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 753         if (!cmd) {
 754                 ret = -ENOMEM;
 755                 goto out;
 756         }
 757
 758         cmd->len = cpu_to_le16(buf_len);
 759         cmd->template_type = template_id;
 760         cmd->enabled_rates = cpu_to_le32(wl->conf.tx.rc_conf.enabled_rates);
 761         cmd->short_retry_limit = wl->conf.tx.rc_conf.short_retry_limit;
 762         cmd->long_retry_limit = wl->conf.tx.rc_conf.long_retry_limit;
 763
 764         if (buf)
 765                 memcpy(cmd->template_data, buf, buf_len);
 766
 767         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
 768         if (ret < 0) {
 769                 wl1271_warning("cmd set_template failed: %d", ret);
 770                 goto out_free;
 771         }
 772
 773 out_free:
 774         kfree(cmd);
 775
 776 out:
 777         return ret;
 778 }
 779
 780 static int wl1271_build_basic_rates(u8 *rates, u8 band)
 781 {
 782         u8 index = 0;
 783
 784         if (band == IEEE80211_BAND_2GHZ) {
 785                 rates[index++] =
 786                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
 787                 rates[index++] =
 788                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
 789                 rates[index++] =
 790                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
 791                 rates[index++] =
 792                         IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
 793         } else if (band == IEEE80211_BAND_5GHZ) {
 794                 rates[index++] =
 795                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_6MB;
 796                 rates[index++] =
 797                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_12MB;
 798                 rates[index++] =
 799                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
 800         } else {
 801                 wl1271_error("build_basic_rates invalid band: %d", band);
 802         }
 803
 804         return index;
 805 }
 806
 807 static int wl1271_build_extended_rates(u8 *rates, u8 band)
 808 {
 809         u8 index = 0;
 810
 811         if (band == IEEE80211_BAND_2GHZ) {
 812                 rates[index++] = IEEE80211_OFDM_RATE_6MB;
 813                 rates[index++] = IEEE80211_OFDM_RATE_9MB;
 814                 rates[index++] = IEEE80211_OFDM_RATE_12MB;
 815                 rates[index++] = IEEE80211_OFDM_RATE_18MB;
 816                 rates[index++] = IEEE80211_OFDM_RATE_24MB;
 817                 rates[index++] = IEEE80211_OFDM_RATE_36MB;
 818                 rates[index++] = IEEE80211_OFDM_RATE_48MB;
 819                 rates[index++] = IEEE80211_OFDM_RATE_54MB;
 820         } else if (band == IEEE80211_BAND_5GHZ) {
 821                 rates[index++] =
 822                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_9MB;
 823                 rates[index++] =
 824                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_18MB;
 825                 rates[index++] =
 826                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_24MB;
 827                 rates[index++] =
 828                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_36MB;
 829                 rates[index++] =
 830                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_48MB;
 831                 rates[index++] =
 832                         IEEE80211_BASIC_RATE_MASK | IEEE80211_OFDM_RATE_54MB;
 833         } else {
 834                 wl1271_error("build_basic_rates invalid band: %d", band);
 835         }
 836
 837         return index;
 838 }
 839
 840 int wl1271_cmd_build_null_data(struct wl1271 *wl)
 841 {
 842         struct wl12xx_null_data_template template;
 843
 844         if (!is_zero_ether_addr(wl->bssid)) {
 845                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
 846                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
 847         } else {
 848                 memset(template.header.da, 0xff, ETH_ALEN);
 849                 memset(template.header.bssid, 0xff, ETH_ALEN);
 850         }
 851
 852         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 853         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
 854                                                 IEEE80211_STYPE_NULLFUNC |
 855                                                 IEEE80211_FCTL_TODS);
 856
 857         return wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, &template,
 858                                        sizeof(template));
 859
 860 }
 861
 862 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
 863 {
 864         struct wl12xx_ps_poll_template template;
 865
 866         memcpy(template.bssid, wl->bssid, ETH_ALEN);
 867         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
 868
 869         /* aid in PS-Poll has its two MSBs each set to 1 */
 870         template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
 871
 872         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 873
 874         return wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, &template,
 875                                        sizeof(template));
 876
 877 }
 878
 879 int wl1271_cmd_build_probe_req(struct wl1271 *wl, u8 *ssid, size_t ssid_len,
 880                                u8 band)
 881 {
 882         struct wl12xx_probe_req_template template;
 883         struct wl12xx_ie_rates *rates;
 884         char *ptr;
 885         u16 size;
 886         int ret;
 887
 888         ptr = (char *)&template;
 889         size = sizeof(struct ieee80211_header);
 890
 891         memset(template.header.da, 0xff, ETH_ALEN);
 892         memset(template.header.bssid, 0xff, ETH_ALEN);
 893         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
 894         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 895
 896         /* IEs */
 897         /* SSID */
 898         template.ssid.header.id = WLAN_EID_SSID;
 899         template.ssid.header.len = ssid_len;
 900         if (ssid_len && ssid)
 901                 memcpy(template.ssid.ssid, ssid, ssid_len);
 902         size += sizeof(struct wl12xx_ie_header) + ssid_len;
 903         ptr += size;
 904
 905         /* Basic Rates */
 906         rates = (struct wl12xx_ie_rates *)ptr;
 907         rates->header.id = WLAN_EID_SUPP_RATES;
 908         rates->header.len = wl1271_build_basic_rates(rates->rates, band);
 909         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 910         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
 911
 912         /* Extended rates */
 913         rates = (struct wl12xx_ie_rates *)ptr;
 914         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
 915         rates->header.len = wl1271_build_extended_rates(rates->rates, band);
 916         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
 917
 918         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
 919
 920         if (band == IEEE80211_BAND_2GHZ)
 921                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
 922                                               &template, size);
 923         else
 924                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
 925                                               &template, size);
 926         return ret;
 927 }
 928
 929 int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
 930 {
 931         struct wl1271_cmd_set_keys *cmd;
 932         int ret = 0;
 933
 934         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
 935
 936         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 937         if (!cmd) {
 938                 ret = -ENOMEM;
 939                 goto out;
 940         }
 941
 942         cmd->id = id;
 943         cmd->key_action = cpu_to_le16(KEY_SET_ID);
 944         cmd->key_type = KEY_WEP;
 945
 946         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 947         if (ret < 0) {
 948                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
 949                 goto out;
 950         }
 951
 952 out:
 953         kfree(cmd);
 954
 955         return ret;
 956 }
 957
 958 int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 959                        u8 key_size, const u8 *key, const u8 *addr,
 960                        u32 tx_seq_32, u16 tx_seq_16)
 961 {
 962         struct wl1271_cmd_set_keys *cmd;
 963         int ret = 0;
 964
 965         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 966         if (!cmd) {
 967                 ret = -ENOMEM;
 968                 goto out;
 969         }
 970
 971         if (key_type != KEY_WEP)
 972                 memcpy(cmd->addr, addr, ETH_ALEN);
 973
 974         cmd->key_action = cpu_to_le16(action);
 975         cmd->key_size = key_size;
 976         cmd->key_type = key_type;
 977
 978         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
 979         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
 980
 981         /* we have only one SSID profile */
 982         cmd->ssid_profile = 0;
 983
 984         cmd->id = id;
 985
 986         if (key_type == KEY_TKIP) {
 987                 /*
 988                  * We get the key in the following form:
 989                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 990                  * but the target is expecting:
 991                  * TKIP - RX MIC - TX MIC
 992                  */
 993                 memcpy(cmd->key, key, 16);
 994                 memcpy(cmd->key + 16, key + 24, 8);
 995                 memcpy(cmd->key + 24, key + 16, 8);
 996
 997         } else {
 998                 memcpy(cmd->key, key, key_size);
 999         }
1000
1001         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
1002
1003         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
1004         if (ret < 0) {
1005                 wl1271_warning("could not set keys");
1006                 goto out;
1007         }
1008
1009 out:
1010         kfree(cmd);
1011
1012         return ret;
1013 }
1014
1015 int wl1271_cmd_disconnect(struct wl1271 *wl)
1016 {
1017         struct wl1271_cmd_disconnect *cmd;
1018         int ret = 0;
1019
1020         wl1271_debug(DEBUG_CMD, "cmd disconnect");
1021
1022         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1023         if (!cmd) {
1024                 ret = -ENOMEM;
1025                 goto out;
1026         }
1027
1028         cmd->rx_config_options = cpu_to_le32(wl->rx_config);
1029         cmd->rx_filter_options = cpu_to_le32(wl->rx_filter);
1030         /* disconnect reason is not used in immediate disconnections */
1031         cmd->type = DISCONNECT_IMMEDIATE;
1032
1033         ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
1034         if (ret < 0) {
1035                 wl1271_error("failed to send disconnect command");
1036                 goto out_free;
1037         }
1038
1039 out_free:
1040         kfree(cmd);
1041
1042 out:
1043         return ret;
1044 }