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