drivers/net/wireless/wl12xx/cmd.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2009-2010 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/crc7.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/ieee80211.h>
  30 #include <linux/slab.h>
  31
  32 #include "wl12xx.h"
  33 #include "reg.h"
  34 #include "io.h"
  35 #include "acx.h"
  36 #include "wl12xx_80211.h"
  37 #include "cmd.h"
  38 #include "event.h"
  39 #include "tx.h"
  40
  41 #define WL1271_CMD_FAST_POLL_COUNT       50
  42
  43 /*
  44  * send command to firmware
  45  *
  46  * @wl: wl struct
  47  * @id: command id
  48  * @buf: buffer containing the command, must work with dma
  49  * @len: length of the buffer
  50  */
  51 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
  52                     size_t res_len)
  53 {
  54         struct wl1271_cmd_header *cmd;
  55         unsigned long timeout;
  56         u32 intr;
  57         int ret = 0;
  58         u16 status;
  59         u16 poll_count = 0;
  60
  61         cmd = buf;
  62         cmd->id = cpu_to_le16(id);
  63         cmd->status = 0;
  64
  65         WARN_ON(len % 4 != 0);
  66         WARN_ON(test_bit(WL1271_FLAG_IN_ELP, &wl->flags));
  67
  68         wl1271_write(wl, wl->cmd_box_addr, buf, len, false);
  69
  70         wl1271_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
  71
  72         timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
  73
  74         intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  75         while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
  76                 if (time_after(jiffies, timeout)) {
  77                         wl1271_error("command complete timeout");
  78                         ret = -ETIMEDOUT;
  79                         goto fail;
  80                 }
  81
  82                 poll_count++;
  83                 if (poll_count < WL1271_CMD_FAST_POLL_COUNT)
  84                         udelay(10);
  85                 else
  86                         msleep(1);
  87
  88                 intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
  89         }
  90
  91         /* read back the status code of the command */
  92         if (res_len == 0)
  93                 res_len = sizeof(struct wl1271_cmd_header);
  94         wl1271_read(wl, wl->cmd_box_addr, cmd, res_len, false);
  95
  96         status = le16_to_cpu(cmd->status);
  97         if (status != CMD_STATUS_SUCCESS) {
  98                 wl1271_error("command execute failure %d", status);
  99                 ret = -EIO;
 100                 goto fail;
 101         }
 102
 103         wl1271_write32(wl, ACX_REG_INTERRUPT_ACK,
 104                        WL1271_ACX_INTR_CMD_COMPLETE);
 105         return 0;
 106
 107 fail:
 108         WARN_ON(1);
 109         ieee80211_queue_work(wl->hw, &wl->recovery_work);
 110         return ret;
 111 }
 112
 113 int wl1271_cmd_general_parms(struct wl1271 *wl)
 114 {
 115         struct wl1271_general_parms_cmd *gen_parms;
 116         struct wl1271_ini_general_params *gp =
 117                 &((struct wl1271_nvs_file *)wl->nvs)->general_params;
 118         bool answer = false;
 119         int ret;
 120
 121         if (!wl->nvs)
 122                 return -ENODEV;
 123
 124         gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
 125         if (!gen_parms)
 126                 return -ENOMEM;
 127
 128         gen_parms->test.id = TEST_CMD_INI_FILE_GENERAL_PARAM;
 129
 130         memcpy(&gen_parms->general_params, gp, sizeof(*gp));
 131
 132         if (gp->tx_bip_fem_auto_detect)
 133                 answer = true;
 134
 135         /* Override the REF CLK from the NVS with the one from platform data */
 136         gen_parms->general_params.ref_clock = wl->ref_clock;
 137
 138         ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), answer);
 139         if (ret < 0) {
 140                 wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");
 141                 goto out;
 142         }
 143
 144         gp->tx_bip_fem_manufacturer =
 145                 gen_parms->general_params.tx_bip_fem_manufacturer;
 146
 147         wl1271_debug(DEBUG_CMD, "FEM autodetect: %s, manufacturer: %d\n",
 148                      answer ? "auto" : "manual", gp->tx_bip_fem_manufacturer);
 149
 150 out:
 151         kfree(gen_parms);
 152         return ret;
 153 }
 154
 155 int wl128x_cmd_general_parms(struct wl1271 *wl)
 156 {
 157         struct wl128x_general_parms_cmd *gen_parms;
 158         struct wl128x_ini_general_params *gp =
 159                 &((struct wl128x_nvs_file *)wl->nvs)->general_params;
 160         bool answer = false;
 161         int ret;
 162
 163         if (!wl->nvs)
 164                 return -ENODEV;
 165
 166         gen_parms = kzalloc(sizeof(*gen_parms), GFP_KERNEL);
 167         if (!gen_parms)
 168                 return -ENOMEM;
 169
 170         gen_parms->test.id = TEST_CMD_INI_FILE_GENERAL_PARAM;
 171
 172         memcpy(&gen_parms->general_params, gp, sizeof(*gp));
 173
 174         if (gp->tx_bip_fem_auto_detect)
 175                 answer = true;
 176
 177         /* Replace REF and TCXO CLKs with the ones from platform data */
 178         gen_parms->general_params.ref_clock = wl->ref_clock;
 179         gen_parms->general_params.tcxo_ref_clock = wl->tcxo_clock;
 180
 181         ret = wl1271_cmd_test(wl, gen_parms, sizeof(*gen_parms), answer);
 182         if (ret < 0) {
 183                 wl1271_warning("CMD_INI_FILE_GENERAL_PARAM failed");
 184                 goto out;
 185         }
 186
 187         gp->tx_bip_fem_manufacturer =
 188                 gen_parms->general_params.tx_bip_fem_manufacturer;
 189
 190         wl1271_debug(DEBUG_CMD, "FEM autodetect: %s, manufacturer: %d\n",
 191                      answer ? "auto" : "manual", gp->tx_bip_fem_manufacturer);
 192
 193 out:
 194         kfree(gen_parms);
 195         return ret;
 196 }
 197
 198 int wl1271_cmd_radio_parms(struct wl1271 *wl)
 199 {
 200         struct wl1271_nvs_file *nvs = (struct wl1271_nvs_file *)wl->nvs;
 201         struct wl1271_radio_parms_cmd *radio_parms;
 202         struct wl1271_ini_general_params *gp = &nvs->general_params;
 203         int ret;
 204
 205         if (!wl->nvs)
 206                 return -ENODEV;
 207
 208         radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
 209         if (!radio_parms)
 210                 return -ENOMEM;
 211
 212         radio_parms->test.id = TEST_CMD_INI_FILE_RADIO_PARAM;
 213
 214         /* 2.4GHz parameters */
 215         memcpy(&radio_parms->static_params_2, &nvs->stat_radio_params_2,
 216                sizeof(struct wl1271_ini_band_params_2));
 217         memcpy(&radio_parms->dyn_params_2,
 218                &nvs->dyn_radio_params_2[gp->tx_bip_fem_manufacturer].params,
 219                sizeof(struct wl1271_ini_fem_params_2));
 220
 221         /* 5GHz parameters */
 222         memcpy(&radio_parms->static_params_5,
 223                &nvs->stat_radio_params_5,
 224                sizeof(struct wl1271_ini_band_params_5));
 225         memcpy(&radio_parms->dyn_params_5,
 226                &nvs->dyn_radio_params_5[gp->tx_bip_fem_manufacturer].params,
 227                sizeof(struct wl1271_ini_fem_params_5));
 228
 229         wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_RADIO_PARAM: ",
 230                     radio_parms, sizeof(*radio_parms));
 231
 232         ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
 233         if (ret < 0)
 234                 wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");
 235
 236         kfree(radio_parms);
 237         return ret;
 238 }
 239
 240 int wl128x_cmd_radio_parms(struct wl1271 *wl)
 241 {
 242         struct wl128x_nvs_file *nvs = (struct wl128x_nvs_file *)wl->nvs;
 243         struct wl128x_radio_parms_cmd *radio_parms;
 244         struct wl128x_ini_general_params *gp = &nvs->general_params;
 245         int ret;
 246
 247         if (!wl->nvs)
 248                 return -ENODEV;
 249
 250         radio_parms = kzalloc(sizeof(*radio_parms), GFP_KERNEL);
 251         if (!radio_parms)
 252                 return -ENOMEM;
 253
 254         radio_parms->test.id = TEST_CMD_INI_FILE_RADIO_PARAM;
 255
 256         /* 2.4GHz parameters */
 257         memcpy(&radio_parms->static_params_2, &nvs->stat_radio_params_2,
 258                sizeof(struct wl128x_ini_band_params_2));
 259         memcpy(&radio_parms->dyn_params_2,
 260                &nvs->dyn_radio_params_2[gp->tx_bip_fem_manufacturer].params,
 261                sizeof(struct wl128x_ini_fem_params_2));
 262
 263         /* 5GHz parameters */
 264         memcpy(&radio_parms->static_params_5,
 265                &nvs->stat_radio_params_5,
 266                sizeof(struct wl128x_ini_band_params_5));
 267         memcpy(&radio_parms->dyn_params_5,
 268                &nvs->dyn_radio_params_5[gp->tx_bip_fem_manufacturer].params,
 269                sizeof(struct wl128x_ini_fem_params_5));
 270
 271         radio_parms->fem_vendor_and_options = nvs->fem_vendor_and_options;
 272
 273         wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_RADIO_PARAM: ",
 274                     radio_parms, sizeof(*radio_parms));
 275
 276         ret = wl1271_cmd_test(wl, radio_parms, sizeof(*radio_parms), 0);
 277         if (ret < 0)
 278                 wl1271_warning("CMD_INI_FILE_RADIO_PARAM failed");
 279
 280         kfree(radio_parms);
 281         return ret;
 282 }
 283
 284 int wl1271_cmd_ext_radio_parms(struct wl1271 *wl)
 285 {
 286         struct wl1271_ext_radio_parms_cmd *ext_radio_parms;
 287         struct conf_rf_settings *rf = &wl->conf.rf;
 288         int ret;
 289
 290         if (!wl->nvs)
 291                 return -ENODEV;
 292
 293         ext_radio_parms = kzalloc(sizeof(*ext_radio_parms), GFP_KERNEL);
 294         if (!ext_radio_parms)
 295                 return -ENOMEM;
 296
 297         ext_radio_parms->test.id = TEST_CMD_INI_FILE_RF_EXTENDED_PARAM;
 298
 299         memcpy(ext_radio_parms->tx_per_channel_power_compensation_2,
 300                rf->tx_per_channel_power_compensation_2,
 301                CONF_TX_PWR_COMPENSATION_LEN_2);
 302         memcpy(ext_radio_parms->tx_per_channel_power_compensation_5,
 303                rf->tx_per_channel_power_compensation_5,
 304                CONF_TX_PWR_COMPENSATION_LEN_5);
 305
 306         wl1271_dump(DEBUG_CMD, "TEST_CMD_INI_FILE_EXT_RADIO_PARAM: ",
 307                     ext_radio_parms, sizeof(*ext_radio_parms));
 308
 309         ret = wl1271_cmd_test(wl, ext_radio_parms, sizeof(*ext_radio_parms), 0);
 310         if (ret < 0)
 311                 wl1271_warning("TEST_CMD_INI_FILE_RF_EXTENDED_PARAM failed");
 312
 313         kfree(ext_radio_parms);
 314         return ret;
 315 }
 316
 317 /*
 318  * Poll the mailbox event field until any of the bits in the mask is set or a
 319  * timeout occurs (WL1271_EVENT_TIMEOUT in msecs)
 320  */
 321 static int wl1271_cmd_wait_for_event_or_timeout(struct wl1271 *wl, u32 mask)
 322 {
 323         u32 events_vector, event;
 324         unsigned long timeout;
 325
 326         timeout = jiffies + msecs_to_jiffies(WL1271_EVENT_TIMEOUT);
 327
 328         do {
 329                 if (time_after(jiffies, timeout)) {
 330                         wl1271_debug(DEBUG_CMD, "timeout waiting for event %d",
 331                                      (int)mask);
 332                         return -ETIMEDOUT;
 333                 }
 334
 335                 msleep(1);
 336
 337                 /* read from both event fields */
 338                 wl1271_read(wl, wl->mbox_ptr[0], &events_vector,
 339                             sizeof(events_vector), false);
 340                 event = events_vector & mask;
 341                 wl1271_read(wl, wl->mbox_ptr[1], &events_vector,
 342                             sizeof(events_vector), false);
 343                 event |= events_vector & mask;
 344         } while (!event);
 345
 346         return 0;
 347 }
 348
 349 static int wl1271_cmd_wait_for_event(struct wl1271 *wl, u32 mask)
 350 {
 351         int ret;
 352
 353         ret = wl1271_cmd_wait_for_event_or_timeout(wl, mask);
 354         if (ret != 0) {
 355                 ieee80211_queue_work(wl->hw, &wl->recovery_work);
 356                 return ret;
 357         }
 358
 359         return 0;
 360 }
 361
 362 int wl1271_cmd_join(struct wl1271 *wl, u8 bss_type)
 363 {
 364         struct wl1271_cmd_join *join;
 365         int ret, i;
 366         u8 *bssid;
 367
 368         join = kzalloc(sizeof(*join), GFP_KERNEL);
 369         if (!join) {
 370                 ret = -ENOMEM;
 371                 goto out;
 372         }
 373
 374         wl1271_debug(DEBUG_CMD, "cmd join");
 375
 376         /* Reverse order BSSID */
 377         bssid = (u8 *) &join->bssid_lsb;
 378         for (i = 0; i < ETH_ALEN; i++)
 379                 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
 380
 381         join->rx_config_options = cpu_to_le32(wl->rx_config);
 382         join->rx_filter_options = cpu_to_le32(wl->rx_filter);
 383         join->bss_type = bss_type;
 384         join->basic_rate_set = cpu_to_le32(wl->basic_rate_set);
 385         join->supported_rate_set = cpu_to_le32(wl->rate_set);
 386
 387         if (wl->band == IEEE80211_BAND_5GHZ)
 388                 join->bss_type |= WL1271_JOIN_CMD_BSS_TYPE_5GHZ;
 389
 390         join->beacon_interval = cpu_to_le16(wl->beacon_int);
 391         join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;
 392
 393         join->channel = wl->channel;
 394         join->ssid_len = wl->ssid_len;
 395         memcpy(join->ssid, wl->ssid, wl->ssid_len);
 396
 397         join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
 398
 399         /* reset TX security counters */
 400         wl->tx_security_last_seq = 0;
 401         wl->tx_security_seq = 0;
 402
 403         wl1271_debug(DEBUG_CMD, "cmd join: basic_rate_set=0x%x, rate_set=0x%x",
 404                 join->basic_rate_set, join->supported_rate_set);
 405
 406         ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
 407         if (ret < 0) {
 408                 wl1271_error("failed to initiate cmd join");
 409                 goto out_free;
 410         }
 411
 412         ret = wl1271_cmd_wait_for_event(wl, JOIN_EVENT_COMPLETE_ID);
 413         if (ret < 0)
 414                 wl1271_error("cmd join event completion error");
 415
 416 out_free:
 417         kfree(join);
 418
 419 out:
 420         return ret;
 421 }
 422
 423 /**
 424  * send test command to firmware
 425  *
 426  * @wl: wl struct
 427  * @buf: buffer containing the command, with all headers, must work with dma
 428  * @len: length of the buffer
 429  * @answer: is answer needed
 430  */
 431 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 432 {
 433         int ret;
 434         size_t res_len = 0;
 435
 436         wl1271_debug(DEBUG_CMD, "cmd test");
 437
 438         if (answer)
 439                 res_len = buf_len;
 440
 441         ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 442
 443         if (ret < 0) {
 444                 wl1271_warning("TEST command failed");
 445                 return ret;
 446         }
 447
 448         return ret;
 449 }
 450
 451 /**
 452  * read acx from firmware
 453  *
 454  * @wl: wl struct
 455  * @id: acx id
 456  * @buf: buffer for the response, including all headers, must work with dma
 457  * @len: length of buf
 458  */
 459 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 460 {
 461         struct acx_header *acx = buf;
 462         int ret;
 463
 464         wl1271_debug(DEBUG_CMD, "cmd interrogate");
 465
 466         acx->id = cpu_to_le16(id);
 467
 468         /* payload length, does not include any headers */
 469         acx->len = cpu_to_le16(len - sizeof(*acx));
 470
 471         ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
 472         if (ret < 0)
 473                 wl1271_error("INTERROGATE command failed");
 474
 475         return ret;
 476 }
 477
 478 /**
 479  * write acx value to firmware
 480  *
 481  * @wl: wl struct
 482  * @id: acx id
 483  * @buf: buffer containing acx, including all headers, must work with dma
 484  * @len: length of buf
 485  */
 486 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 487 {
 488         struct acx_header *acx = buf;
 489         int ret;
 490
 491         wl1271_debug(DEBUG_CMD, "cmd configure");
 492
 493         acx->id = cpu_to_le16(id);
 494
 495         /* payload length, does not include any headers */
 496         acx->len = cpu_to_le16(len - sizeof(*acx));
 497
 498         ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 499         if (ret < 0) {
 500                 wl1271_warning("CONFIGURE command NOK");
 501                 return ret;
 502         }
 503
 504         return 0;
 505 }
 506
 507 int wl1271_cmd_data_path(struct wl1271 *wl, bool enable)
 508 {
 509         struct cmd_enabledisable_path *cmd;
 510         int ret;
 511         u16 cmd_rx, cmd_tx;
 512
 513         wl1271_debug(DEBUG_CMD, "cmd data path");
 514
 515         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 516         if (!cmd) {
 517                 ret = -ENOMEM;
 518                 goto out;
 519         }
 520
 521         /* the channel here is only used for calibration, so hardcoded to 1 */
 522         cmd->channel = 1;
 523
 524         if (enable) {
 525                 cmd_rx = CMD_ENABLE_RX;
 526                 cmd_tx = CMD_ENABLE_TX;
 527         } else {
 528                 cmd_rx = CMD_DISABLE_RX;
 529                 cmd_tx = CMD_DISABLE_TX;
 530         }
 531
 532         ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 533         if (ret < 0) {
 534                 wl1271_error("rx %s cmd for channel %d failed",
 535                              enable ? "start" : "stop", cmd->channel);
 536                 goto out;
 537         }
 538
 539         wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 540                      enable ? "start" : "stop", cmd->channel);
 541
 542         ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 543         if (ret < 0) {
 544                 wl1271_error("tx %s cmd for channel %d failed",
 545                              enable ? "start" : "stop", cmd->channel);
 546                 goto out;
 547         }
 548
 549         wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
 550                      enable ? "start" : "stop", cmd->channel);
 551
 552 out:
 553         kfree(cmd);
 554         return ret;
 555 }
 556
 557 int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode)
 558 {
 559         struct wl1271_cmd_ps_params *ps_params = NULL;
 560         int ret = 0;
 561
 562         wl1271_debug(DEBUG_CMD, "cmd set ps mode");
 563
 564         ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
 565         if (!ps_params) {
 566                 ret = -ENOMEM;
 567                 goto out;
 568         }
 569
 570         ps_params->ps_mode = ps_mode;
 571
 572         ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
 573                               sizeof(*ps_params), 0);
 574         if (ret < 0) {
 575                 wl1271_error("cmd set_ps_mode failed");
 576                 goto out;
 577         }
 578
 579 out:
 580         kfree(ps_params);
 581         return ret;
 582 }
 583
 584 int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
 585                             void *buf, size_t buf_len, int index, u32 rates)
 586 {
 587         struct wl1271_cmd_template_set *cmd;
 588         int ret = 0;
 589
 590         wl1271_debug(DEBUG_CMD, "cmd template_set %d", template_id);
 591
 592         WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
 593         buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
 594
 595         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 596         if (!cmd) {
 597                 ret = -ENOMEM;
 598                 goto out;
 599         }
 600
 601         cmd->len = cpu_to_le16(buf_len);
 602         cmd->template_type = template_id;
 603         cmd->enabled_rates = cpu_to_le32(rates);
 604         cmd->short_retry_limit = wl->conf.tx.tmpl_short_retry_limit;
 605         cmd->long_retry_limit = wl->conf.tx.tmpl_long_retry_limit;
 606         cmd->index = index;
 607
 608         if (buf)
 609                 memcpy(cmd->template_data, buf, buf_len);
 610
 611         ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
 612         if (ret < 0) {
 613                 wl1271_warning("cmd set_template failed: %d", ret);
 614                 goto out_free;
 615         }
 616
 617 out_free:
 618         kfree(cmd);
 619
 620 out:
 621         return ret;
 622 }
 623
 624 int wl1271_cmd_build_null_data(struct wl1271 *wl)
 625 {
 626         struct sk_buff *skb = NULL;
 627         int size;
 628         void *ptr;
 629         int ret = -ENOMEM;
 630
 631
 632         if (wl->bss_type == BSS_TYPE_IBSS) {
 633                 size = sizeof(struct wl12xx_null_data_template);
 634                 ptr = NULL;
 635         } else {
 636                 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 637                 if (!skb)
 638                         goto out;
 639                 size = skb->len;
 640                 ptr = skb->data;
 641         }
 642
 643         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, ptr, size, 0,
 644                                       wl->basic_rate);
 645
 646 out:
 647         dev_kfree_skb(skb);
 648         if (ret)
 649                 wl1271_warning("cmd buld null data failed %d", ret);
 650
 651         return ret;
 652
 653 }
 654
 655 int wl1271_cmd_build_klv_null_data(struct wl1271 *wl)
 656 {
 657         struct sk_buff *skb = NULL;
 658         int ret = -ENOMEM;
 659
 660         skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
 661         if (!skb)
 662                 goto out;
 663
 664         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_KLV,
 665                                       skb->data, skb->len,
 666                                       CMD_TEMPL_KLV_IDX_NULL_DATA,
 667                                       wl->basic_rate);
 668
 669 out:
 670         dev_kfree_skb(skb);
 671         if (ret)
 672                 wl1271_warning("cmd build klv null data failed %d", ret);
 673
 674         return ret;
 675
 676 }
 677
 678 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
 679 {
 680         struct sk_buff *skb;
 681         int ret = 0;
 682
 683         skb = ieee80211_pspoll_get(wl->hw, wl->vif);
 684         if (!skb)
 685                 goto out;
 686
 687         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, skb->data,
 688                                       skb->len, 0, wl->basic_rate_set);
 689
 690 out:
 691         dev_kfree_skb(skb);
 692         return ret;
 693 }
 694
 695 int wl1271_cmd_build_probe_req(struct wl1271 *wl,
 696                                const u8 *ssid, size_t ssid_len,
 697                                const u8 *ie, size_t ie_len, u8 band)
 698 {
 699         struct sk_buff *skb;
 700         int ret;
 701
 702         skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
 703                                      ie, ie_len);
 704         if (!skb) {
 705                 ret = -ENOMEM;
 706                 goto out;
 707         }
 708
 709         wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", skb->data, skb->len);
 710
 711         if (band == IEEE80211_BAND_2GHZ)
 712                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
 713                                               skb->data, skb->len, 0,
 714                                               wl->conf.tx.basic_rate);
 715         else
 716                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
 717                                               skb->data, skb->len, 0,
 718                                               wl->conf.tx.basic_rate_5);
 719
 720 out:
 721         dev_kfree_skb(skb);
 722         return ret;
 723 }
 724
 725 struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,
 726                                               struct sk_buff *skb)
 727 {
 728         int ret;
 729
 730         if (!skb)
 731                 skb = ieee80211_ap_probereq_get(wl->hw, wl->vif);
 732         if (!skb)
 733                 goto out;
 734
 735         wl1271_dump(DEBUG_SCAN, "AP PROBE REQ: ", skb->data, skb->len);
 736
 737         if (wl->band == IEEE80211_BAND_2GHZ)
 738                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
 739                                               skb->data, skb->len, 0,
 740                                               wl->conf.tx.basic_rate);
 741         else
 742                 ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,
 743                                               skb->data, skb->len, 0,
 744                                               wl->conf.tx.basic_rate_5);
 745
 746         if (ret < 0)
 747                 wl1271_error("Unable to set ap probe request template.");
 748
 749 out:
 750         return skb;
 751 }
 752
 753 int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, __be32 ip_addr)
 754 {
 755         int ret;
 756         struct wl12xx_arp_rsp_template tmpl;
 757         struct ieee80211_hdr_3addr *hdr;
 758         struct arphdr *arp_hdr;
 759
 760         memset(&tmpl, 0, sizeof(tmpl));
 761
 762         /* mac80211 header */
 763         hdr = &tmpl.hdr;
 764         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 765                                          IEEE80211_STYPE_DATA |
 766                                          IEEE80211_FCTL_TODS);
 767         memcpy(hdr->addr1, wl->vif->bss_conf.bssid, ETH_ALEN);
 768         memcpy(hdr->addr2, wl->vif->addr, ETH_ALEN);
 769         memset(hdr->addr3, 0xff, ETH_ALEN);
 770
 771         /* llc layer */
 772         memcpy(tmpl.llc_hdr, rfc1042_header, sizeof(rfc1042_header));
 773         tmpl.llc_type = cpu_to_be16(ETH_P_ARP);
 774
 775         /* arp header */
 776         arp_hdr = &tmpl.arp_hdr;
 777         arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);
 778         arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);
 779         arp_hdr->ar_hln = ETH_ALEN;
 780         arp_hdr->ar_pln = 4;
 781         arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);
 782
 783         /* arp payload */
 784         memcpy(tmpl.sender_hw, wl->vif->addr, ETH_ALEN);
 785         tmpl.sender_ip = ip_addr;
 786
 787         ret = wl1271_cmd_template_set(wl, CMD_TEMPL_ARP_RSP,
 788                                       &tmpl, sizeof(tmpl), 0,
 789                                       wl->basic_rate);
 790
 791         return ret;
 792 }
 793
 794 int wl1271_build_qos_null_data(struct wl1271 *wl)
 795 {
 796         struct ieee80211_qos_hdr template;
 797
 798         memset(&template, 0, sizeof(template));
 799
 800         memcpy(template.addr1, wl->bssid, ETH_ALEN);
 801         memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
 802         memcpy(template.addr3, wl->bssid, ETH_ALEN);
 803
 804         template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 805                                              IEEE80211_STYPE_QOS_NULLFUNC |
 806                                              IEEE80211_FCTL_TODS);
 807
 808         /* FIXME: not sure what priority to use here */
 809         template.qos_ctrl = cpu_to_le16(0);
 810
 811         return wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, &template,
 812                                        sizeof(template), 0,
 813                                        wl->basic_rate);
 814 }
 815
 816 int wl1271_cmd_set_sta_default_wep_key(struct wl1271 *wl, u8 id)
 817 {
 818         struct wl1271_cmd_set_sta_keys *cmd;
 819         int ret = 0;
 820
 821         wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
 822
 823         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 824         if (!cmd) {
 825                 ret = -ENOMEM;
 826                 goto out;
 827         }
 828
 829         cmd->id = id;
 830         cmd->key_action = cpu_to_le16(KEY_SET_ID);
 831         cmd->key_type = KEY_WEP;
 832
 833         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 834         if (ret < 0) {
 835                 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
 836                 goto out;
 837         }
 838
 839 out:
 840         kfree(cmd);
 841
 842         return ret;
 843 }
 844
 845 int wl1271_cmd_set_ap_default_wep_key(struct wl1271 *wl, u8 id)
 846 {
 847         struct wl1271_cmd_set_ap_keys *cmd;
 848         int ret = 0;
 849
 850         wl1271_debug(DEBUG_CMD, "cmd set_ap_default_wep_key %d", id);
 851
 852         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 853         if (!cmd) {
 854                 ret = -ENOMEM;
 855                 goto out;
 856         }
 857
 858         cmd->hlid = WL1271_AP_BROADCAST_HLID;
 859         cmd->key_id = id;
 860         cmd->lid_key_type = WEP_DEFAULT_LID_TYPE;
 861         cmd->key_action = cpu_to_le16(KEY_SET_ID);
 862         cmd->key_type = KEY_WEP;
 863
 864         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 865         if (ret < 0) {
 866                 wl1271_warning("cmd set_ap_default_wep_key failed: %d", ret);
 867                 goto out;
 868         }
 869
 870 out:
 871         kfree(cmd);
 872
 873         return ret;
 874 }
 875
 876 int wl1271_cmd_set_sta_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 877                        u8 key_size, const u8 *key, const u8 *addr,
 878                        u32 tx_seq_32, u16 tx_seq_16)
 879 {
 880         struct wl1271_cmd_set_sta_keys *cmd;
 881         int ret = 0;
 882
 883         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 884         if (!cmd) {
 885                 ret = -ENOMEM;
 886                 goto out;
 887         }
 888
 889         if (key_type != KEY_WEP)
 890                 memcpy(cmd->addr, addr, ETH_ALEN);
 891
 892         cmd->key_action = cpu_to_le16(action);
 893         cmd->key_size = key_size;
 894         cmd->key_type = key_type;
 895
 896         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
 897         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
 898
 899         /* we have only one SSID profile */
 900         cmd->ssid_profile = 0;
 901
 902         cmd->id = id;
 903
 904         if (key_type == KEY_TKIP) {
 905                 /*
 906                  * We get the key in the following form:
 907                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 908                  * but the target is expecting:
 909                  * TKIP - RX MIC - TX MIC
 910                  */
 911                 memcpy(cmd->key, key, 16);
 912                 memcpy(cmd->key + 16, key + 24, 8);
 913                 memcpy(cmd->key + 24, key + 16, 8);
 914
 915         } else {
 916                 memcpy(cmd->key, key, key_size);
 917         }
 918
 919         wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
 920
 921         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 922         if (ret < 0) {
 923                 wl1271_warning("could not set keys");
 924         goto out;
 925         }
 926
 927 out:
 928         kfree(cmd);
 929
 930         return ret;
 931 }
 932
 933 int wl1271_cmd_set_ap_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 934                         u8 key_size, const u8 *key, u8 hlid, u32 tx_seq_32,
 935                         u16 tx_seq_16)
 936 {
 937         struct wl1271_cmd_set_ap_keys *cmd;
 938         int ret = 0;
 939         u8 lid_type;
 940
 941         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
 942         if (!cmd)
 943                 return -ENOMEM;
 944
 945         if (hlid == WL1271_AP_BROADCAST_HLID) {
 946                 if (key_type == KEY_WEP)
 947                         lid_type = WEP_DEFAULT_LID_TYPE;
 948                 else
 949                         lid_type = BROADCAST_LID_TYPE;
 950         } else {
 951                 lid_type = UNICAST_LID_TYPE;
 952         }
 953
 954         wl1271_debug(DEBUG_CRYPT, "ap key action: %d id: %d lid: %d type: %d"
 955                      " hlid: %d", (int)action, (int)id, (int)lid_type,
 956                      (int)key_type, (int)hlid);
 957
 958         cmd->lid_key_type = lid_type;
 959         cmd->hlid = hlid;
 960         cmd->key_action = cpu_to_le16(action);
 961         cmd->key_size = key_size;
 962         cmd->key_type = key_type;
 963         cmd->key_id = id;
 964         cmd->ac_seq_num16[0] = cpu_to_le16(tx_seq_16);
 965         cmd->ac_seq_num32[0] = cpu_to_le32(tx_seq_32);
 966
 967         if (key_type == KEY_TKIP) {
 968                 /*
 969                  * We get the key in the following form:
 970                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
 971                  * but the target is expecting:
 972                  * TKIP - RX MIC - TX MIC
 973                  */
 974                 memcpy(cmd->key, key, 16);
 975                 memcpy(cmd->key + 16, key + 24, 8);
 976                 memcpy(cmd->key + 24, key + 16, 8);
 977         } else {
 978                 memcpy(cmd->key, key, key_size);
 979         }
 980
 981         wl1271_dump(DEBUG_CRYPT, "TARGET AP KEY: ", cmd, sizeof(*cmd));
 982
 983         ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 984         if (ret < 0) {
 985                 wl1271_warning("could not set ap keys");
 986                 goto out;
 987         }
 988
 989 out:
 990         kfree(cmd);
 991         return ret;
 992 }
 993
 994 int wl1271_cmd_disconnect(struct wl1271 *wl)
 995 {
 996         struct wl1271_cmd_disconnect *cmd;
 997         int ret = 0;
 998
 999         wl1271_debug(DEBUG_CMD, "cmd disconnect");
1000
1001         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1002         if (!cmd) {
1003                 ret = -ENOMEM;
1004                 goto out;
1005         }
1006
1007         cmd->rx_config_options = cpu_to_le32(wl->rx_config);
1008         cmd->rx_filter_options = cpu_to_le32(wl->rx_filter);
1009         /* disconnect reason is not used in immediate disconnections */
1010         cmd->type = DISCONNECT_IMMEDIATE;
1011
1012         ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
1013         if (ret < 0) {
1014                 wl1271_error("failed to send disconnect command");
1015                 goto out_free;
1016         }
1017
1018         ret = wl1271_cmd_wait_for_event(wl, DISCONNECT_EVENT_COMPLETE_ID);
1019         if (ret < 0)
1020                 wl1271_error("cmd disconnect event completion error");
1021
1022 out_free:
1023         kfree(cmd);
1024
1025 out:
1026         return ret;
1027 }
1028
1029 int wl1271_cmd_set_sta_state(struct wl1271 *wl)
1030 {
1031         struct wl1271_cmd_set_sta_state *cmd;
1032         int ret = 0;
1033
1034         wl1271_debug(DEBUG_CMD, "cmd set sta state");
1035
1036         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1037         if (!cmd) {
1038                 ret = -ENOMEM;
1039                 goto out;
1040         }
1041
1042         cmd->state = WL1271_CMD_STA_STATE_CONNECTED;
1043
1044         ret = wl1271_cmd_send(wl, CMD_SET_STA_STATE, cmd, sizeof(*cmd), 0);
1045         if (ret < 0) {
1046                 wl1271_error("failed to send set STA state command");
1047                 goto out_free;
1048         }
1049
1050 out_free:
1051         kfree(cmd);
1052
1053 out:
1054         return ret;
1055 }
1056
1057 int wl1271_cmd_start_bss(struct wl1271 *wl)
1058 {
1059         struct wl1271_cmd_bss_start *cmd;
1060         struct ieee80211_bss_conf *bss_conf = &wl->vif->bss_conf;
1061         int ret;
1062
1063         wl1271_debug(DEBUG_CMD, "cmd start bss");
1064
1065         /*
1066          * FIXME: We currently do not support hidden SSID. The real SSID
1067          * should be fetched from mac80211 first.
1068          */
1069         if (wl->ssid_len == 0) {
1070                 wl1271_warning("Hidden SSID currently not supported for AP");
1071                 ret = -EINVAL;
1072                 goto out;
1073         }
1074
1075         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1076         if (!cmd) {
1077                 ret = -ENOMEM;
1078                 goto out;
1079         }
1080
1081         memcpy(cmd->bssid, bss_conf->bssid, ETH_ALEN);
1082
1083         cmd->aging_period = cpu_to_le16(WL1271_AP_DEF_INACTIV_SEC);
1084         cmd->bss_index = WL1271_AP_BSS_INDEX;
1085         cmd->global_hlid = WL1271_AP_GLOBAL_HLID;
1086         cmd->broadcast_hlid = WL1271_AP_BROADCAST_HLID;
1087         cmd->basic_rate_set = cpu_to_le32(wl->basic_rate_set);
1088         cmd->beacon_interval = cpu_to_le16(wl->beacon_int);
1089         cmd->dtim_interval = bss_conf->dtim_period;
1090         cmd->beacon_expiry = WL1271_AP_DEF_BEACON_EXP;
1091         cmd->channel = wl->channel;
1092         cmd->ssid_len = wl->ssid_len;
1093         cmd->ssid_type = SSID_TYPE_PUBLIC;
1094         memcpy(cmd->ssid, wl->ssid, wl->ssid_len);
1095
1096         switch (wl->band) {
1097         case IEEE80211_BAND_2GHZ:
1098                 cmd->band = RADIO_BAND_2_4GHZ;
1099                 break;
1100         case IEEE80211_BAND_5GHZ:
1101                 cmd->band = RADIO_BAND_5GHZ;
1102                 break;
1103         default:
1104                 wl1271_warning("bss start - unknown band: %d", (int)wl->band);
1105                 cmd->band = RADIO_BAND_2_4GHZ;
1106                 break;
1107         }
1108
1109         ret = wl1271_cmd_send(wl, CMD_BSS_START, cmd, sizeof(*cmd), 0);
1110         if (ret < 0) {
1111                 wl1271_error("failed to initiate cmd start bss");
1112                 goto out_free;
1113         }
1114
1115 out_free:
1116         kfree(cmd);
1117
1118 out:
1119         return ret;
1120 }
1121
1122 int wl1271_cmd_stop_bss(struct wl1271 *wl)
1123 {
1124         struct wl1271_cmd_bss_start *cmd;
1125         int ret;
1126
1127         wl1271_debug(DEBUG_CMD, "cmd stop bss");
1128
1129         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1130         if (!cmd) {
1131                 ret = -ENOMEM;
1132                 goto out;
1133         }
1134
1135         cmd->bss_index = WL1271_AP_BSS_INDEX;
1136
1137         ret = wl1271_cmd_send(wl, CMD_BSS_STOP, cmd, sizeof(*cmd), 0);
1138         if (ret < 0) {
1139                 wl1271_error("failed to initiate cmd stop bss");
1140                 goto out_free;
1141         }
1142
1143 out_free:
1144         kfree(cmd);
1145
1146 out:
1147         return ret;
1148 }
1149
1150 int wl1271_cmd_add_sta(struct wl1271 *wl, struct ieee80211_sta *sta, u8 hlid)
1151 {
1152         struct wl1271_cmd_add_sta *cmd;
1153         int ret;
1154
1155         wl1271_debug(DEBUG_CMD, "cmd add sta %d", (int)hlid);
1156
1157         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1158         if (!cmd) {
1159                 ret = -ENOMEM;
1160                 goto out;
1161         }
1162
1163         /* currently we don't support UAPSD */
1164         cmd->sp_len = 0;
1165
1166         memcpy(cmd->addr, sta->addr, ETH_ALEN);
1167         cmd->bss_index = WL1271_AP_BSS_INDEX;
1168         cmd->aid = sta->aid;
1169         cmd->hlid = hlid;
1170
1171         /*
1172          * FIXME: Does STA support QOS? We need to propagate this info from
1173          * hostapd. Currently not that important since this is only used for
1174          * sending the correct flavor of null-data packet in response to a
1175          * trigger.
1176          */
1177         cmd->wmm = 0;
1178
1179         cmd->supported_rates = cpu_to_le32(wl1271_tx_enabled_rates_get(wl,
1180                                                 sta->supp_rates[wl->band]));
1181
1182         wl1271_debug(DEBUG_CMD, "new sta rates: 0x%x", cmd->supported_rates);
1183
1184         ret = wl1271_cmd_send(wl, CMD_ADD_STA, cmd, sizeof(*cmd), 0);
1185         if (ret < 0) {
1186                 wl1271_error("failed to initiate cmd add sta");
1187                 goto out_free;
1188         }
1189
1190 out_free:
1191         kfree(cmd);
1192
1193 out:
1194         return ret;
1195 }
1196
1197 int wl1271_cmd_remove_sta(struct wl1271 *wl, u8 hlid)
1198 {
1199         struct wl1271_cmd_remove_sta *cmd;
1200         int ret;
1201
1202         wl1271_debug(DEBUG_CMD, "cmd remove sta %d", (int)hlid);
1203
1204         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1205         if (!cmd) {
1206                 ret = -ENOMEM;
1207                 goto out;
1208         }
1209
1210         cmd->hlid = hlid;
1211         /* We never send a deauth, mac80211 is in charge of this */
1212         cmd->reason_opcode = 0;
1213         cmd->send_deauth_flag = 0;
1214
1215         ret = wl1271_cmd_send(wl, CMD_REMOVE_STA, cmd, sizeof(*cmd), 0);
1216         if (ret < 0) {
1217                 wl1271_error("failed to initiate cmd remove sta");
1218                 goto out_free;
1219         }
1220
1221         /*
1222          * We are ok with a timeout here. The event is sometimes not sent
1223          * due to a firmware bug.
1224          */
1225         wl1271_cmd_wait_for_event_or_timeout(wl, STA_REMOVE_COMPLETE_EVENT_ID);
1226
1227 out_free:
1228         kfree(cmd);
1229
1230 out:
1231         return ret;
1232 }