drivers/net/wireless/iwmc3200wifi/commands.c

   1 /*
   2  * Intel Wireless Multicomm 3200 WiFi driver
   3  *
   4  * Copyright (C) 2009 Intel Corporation. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  *   * Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *   * Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in
  14  *     the documentation and/or other materials provided with the
  15  *     distribution.
  16  *   * Neither the name of Intel Corporation nor the names of its
  17  *     contributors may be used to endorse or promote products derived
  18  *     from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  *
  33  * Intel Corporation <ilw@linux.intel.com>
  34  * Samuel Ortiz <samuel.ortiz@intel.com>
  35  * Zhu Yi <yi.zhu@intel.com>
  36  *
  37  */
  38
  39 #include <linux/kernel.h>
  40 #include <linux/wireless.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/ieee80211.h>
  43
  44 #include "iwm.h"
  45 #include "bus.h"
  46 #include "hal.h"
  47 #include "umac.h"
  48 #include "commands.h"
  49 #include "debug.h"
  50
  51 static int iwm_send_lmac_ptrough_cmd(struct iwm_priv *iwm,
  52                                      u8 lmac_cmd_id,
  53                                      const void *lmac_payload,
  54                                      u16 lmac_payload_size,
  55                                      u8 resp)
  56 {
  57         struct iwm_udma_wifi_cmd udma_cmd = UDMA_LMAC_INIT;
  58         struct iwm_umac_cmd umac_cmd;
  59         struct iwm_lmac_cmd lmac_cmd;
  60
  61         lmac_cmd.id = lmac_cmd_id;
  62
  63         umac_cmd.id = UMAC_CMD_OPCODE_WIFI_PASS_THROUGH;
  64         umac_cmd.resp = resp;
  65
  66         return iwm_hal_send_host_cmd(iwm, &udma_cmd, &umac_cmd, &lmac_cmd,
  67                                      lmac_payload, lmac_payload_size);
  68 }
  69
  70 int iwm_send_wifi_if_cmd(struct iwm_priv *iwm, void *payload, u16 payload_size,
  71                          bool resp)
  72 {
  73         struct iwm_umac_wifi_if *hdr = (struct iwm_umac_wifi_if *)payload;
  74         struct iwm_udma_wifi_cmd udma_cmd = UDMA_UMAC_INIT;
  75         struct iwm_umac_cmd umac_cmd;
  76         int ret;
  77         u8 oid = hdr->oid;
  78
  79         umac_cmd.id = UMAC_CMD_OPCODE_WIFI_IF_WRAPPER;
  80         umac_cmd.resp = resp;
  81
  82         ret = iwm_hal_send_umac_cmd(iwm, &udma_cmd, &umac_cmd,
  83                                     payload, payload_size);
  84
  85         if (resp) {
  86                 ret = wait_event_interruptible_timeout(iwm->wifi_ntfy_queue,
  87                                    test_and_clear_bit(oid, &iwm->wifi_ntfy[0]),
  88                                    3 * HZ);
  89
  90                 if (!ret)
  91                         ret = -EBUSY;
  92         }
  93
  94         return ret;
  95 }
  96
  97 static struct coex_event iwm_sta_xor_prio_tbl[COEX_EVENTS_NUM] =
  98 {
  99         {4, 3, 0, COEX_UNASSOC_IDLE_FLAGS},
 100         {4, 3, 0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
 101         {4, 3, 0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
 102         {4, 3, 0, COEX_CALIBRATION_FLAGS},
 103         {4, 3, 0, COEX_PERIODIC_CALIBRATION_FLAGS},
 104         {4, 3, 0, COEX_CONNECTION_ESTAB_FLAGS},
 105         {4, 3, 0, COEX_ASSOCIATED_IDLE_FLAGS},
 106         {4, 3, 0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
 107         {4, 3, 0, COEX_ASSOC_AUTO_SCAN_FLAGS},
 108         {4, 3, 0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
 109         {6, 3, 0, COEX_XOR_RF_ON_FLAGS},
 110         {4, 3, 0, COEX_RF_OFF_FLAGS},
 111         {6, 6, 0, COEX_STAND_ALONE_DEBUG_FLAGS},
 112         {4, 3, 0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
 113         {4, 3, 0, COEX_RSRVD1_FLAGS},
 114         {4, 3, 0, COEX_RSRVD2_FLAGS}
 115 };
 116
 117 static struct coex_event iwm_sta_cm_prio_tbl[COEX_EVENTS_NUM] =
 118 {
 119         {1, 1, 0, COEX_UNASSOC_IDLE_FLAGS},
 120         {4, 3, 0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
 121         {3, 3, 0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
 122         {5, 5, 0, COEX_CALIBRATION_FLAGS},
 123         {4, 4, 0, COEX_PERIODIC_CALIBRATION_FLAGS},
 124         {5, 4, 0, COEX_CONNECTION_ESTAB_FLAGS},
 125         {4, 4, 0, COEX_ASSOCIATED_IDLE_FLAGS},
 126         {4, 4, 0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
 127         {4, 4, 0, COEX_ASSOC_AUTO_SCAN_FLAGS},
 128         {4, 4, 0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
 129         {1, 1, 0, COEX_RF_ON_FLAGS},
 130         {1, 1, 0, COEX_RF_OFF_FLAGS},
 131         {6, 6, 0, COEX_STAND_ALONE_DEBUG_FLAGS},
 132         {5, 4, 0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
 133         {1, 1, 0, COEX_RSRVD1_FLAGS},
 134         {1, 1, 0, COEX_RSRVD2_FLAGS}
 135 };
 136
 137 int iwm_send_prio_table(struct iwm_priv *iwm)
 138 {
 139         struct iwm_coex_prio_table_cmd coex_table_cmd;
 140         u32 coex_enabled, mode_enabled;
 141
 142         memset(&coex_table_cmd, 0, sizeof(struct iwm_coex_prio_table_cmd));
 143
 144         coex_table_cmd.flags = COEX_FLAGS_STA_TABLE_VALID_MSK;
 145
 146         switch (iwm->conf.coexist_mode) {
 147         case COEX_MODE_XOR:
 148         case COEX_MODE_CM:
 149                 coex_enabled = 1;
 150                 break;
 151         default:
 152                 coex_enabled = 0;
 153                 break;
 154         }
 155
 156         switch (iwm->conf.mode) {
 157         case UMAC_MODE_BSS:
 158         case UMAC_MODE_IBSS:
 159                 mode_enabled = 1;
 160                 break;
 161         default:
 162                 mode_enabled = 0;
 163                 break;
 164         }
 165
 166         if (coex_enabled && mode_enabled) {
 167                 coex_table_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK |
 168                                         COEX_FLAGS_ASSOC_WAKEUP_UMASK_MSK |
 169                                         COEX_FLAGS_UNASSOC_WAKEUP_UMASK_MSK;
 170
 171                 switch (iwm->conf.coexist_mode) {
 172                 case COEX_MODE_XOR:
 173                         memcpy(coex_table_cmd.sta_prio, iwm_sta_xor_prio_tbl,
 174                                sizeof(iwm_sta_xor_prio_tbl));
 175                         break;
 176                 case COEX_MODE_CM:
 177                         memcpy(coex_table_cmd.sta_prio, iwm_sta_cm_prio_tbl,
 178                                sizeof(iwm_sta_cm_prio_tbl));
 179                         break;
 180                 default:
 181                         IWM_ERR(iwm, "Invalid coex_mode 0x%x\n",
 182                                 iwm->conf.coexist_mode);
 183                         break;
 184                 }
 185         } else
 186                 IWM_WARN(iwm, "coexistense disabled\n");
 187
 188         return iwm_send_lmac_ptrough_cmd(iwm, COEX_PRIORITY_TABLE_CMD,
 189                                 &coex_table_cmd,
 190                                 sizeof(struct iwm_coex_prio_table_cmd), 1);
 191 }
 192
 193 int iwm_send_init_calib_cfg(struct iwm_priv *iwm, u8 calib_requested)
 194 {
 195         struct iwm_lmac_cal_cfg_cmd cal_cfg_cmd;
 196
 197         memset(&cal_cfg_cmd, 0, sizeof(struct iwm_lmac_cal_cfg_cmd));
 198
 199         cal_cfg_cmd.ucode_cfg.init.enable = cpu_to_le32(calib_requested);
 200         cal_cfg_cmd.ucode_cfg.init.start = cpu_to_le32(calib_requested);
 201         cal_cfg_cmd.ucode_cfg.init.send_res = cpu_to_le32(calib_requested);
 202         cal_cfg_cmd.ucode_cfg.flags =
 203                 cpu_to_le32(CALIB_CFG_FLAG_SEND_COMPLETE_NTFY_AFTER_MSK);
 204
 205         return iwm_send_lmac_ptrough_cmd(iwm, CALIBRATION_CFG_CMD, &cal_cfg_cmd,
 206                                 sizeof(struct iwm_lmac_cal_cfg_cmd), 1);
 207 }
 208
 209 int iwm_send_periodic_calib_cfg(struct iwm_priv *iwm, u8 calib_requested)
 210 {
 211         struct iwm_lmac_cal_cfg_cmd cal_cfg_cmd;
 212
 213         memset(&cal_cfg_cmd, 0, sizeof(struct iwm_lmac_cal_cfg_cmd));
 214
 215         cal_cfg_cmd.ucode_cfg.periodic.enable = cpu_to_le32(calib_requested);
 216         cal_cfg_cmd.ucode_cfg.periodic.start = cpu_to_le32(calib_requested);
 217
 218         return iwm_send_lmac_ptrough_cmd(iwm, CALIBRATION_CFG_CMD, &cal_cfg_cmd,
 219                                 sizeof(struct iwm_lmac_cal_cfg_cmd), 0);
 220 }
 221
 222 int iwm_store_rxiq_calib_result(struct iwm_priv *iwm)
 223 {
 224         struct iwm_calib_rxiq *rxiq;
 225         u8 *eeprom_rxiq = iwm_eeprom_access(iwm, IWM_EEPROM_CALIB_RXIQ);
 226         int grplen = sizeof(struct iwm_calib_rxiq_group);
 227
 228         rxiq = kzalloc(sizeof(struct iwm_calib_rxiq), GFP_KERNEL);
 229         if (!rxiq) {
 230                 IWM_ERR(iwm, "Couldn't alloc memory for RX IQ\n");
 231                 return -ENOMEM;
 232         }
 233
 234         eeprom_rxiq = iwm_eeprom_access(iwm, IWM_EEPROM_CALIB_RXIQ);
 235         if (IS_ERR(eeprom_rxiq)) {
 236                 IWM_ERR(iwm, "Couldn't access EEPROM RX IQ entry\n");
 237                 return PTR_ERR(eeprom_rxiq);
 238         }
 239
 240         iwm->calib_res[SHILOH_PHY_CALIBRATE_RX_IQ_CMD].buf = (u8 *)rxiq;
 241         iwm->calib_res[SHILOH_PHY_CALIBRATE_RX_IQ_CMD].size = sizeof(*rxiq);
 242
 243         rxiq->hdr.opcode = SHILOH_PHY_CALIBRATE_RX_IQ_CMD;
 244         rxiq->hdr.first_grp = 0;
 245         rxiq->hdr.grp_num = 1;
 246         rxiq->hdr.all_data_valid = 1;
 247
 248         memcpy(&rxiq->group[0], eeprom_rxiq, 4 * grplen);
 249         memcpy(&rxiq->group[4], eeprom_rxiq + 6 * grplen, grplen);
 250
 251         return 0;
 252 }
 253
 254 int iwm_send_calib_results(struct iwm_priv *iwm)
 255 {
 256         int i, ret = 0;
 257
 258         for (i = PHY_CALIBRATE_OPCODES_NUM; i < CALIBRATION_CMD_NUM; i++) {
 259                 if (test_bit(i - PHY_CALIBRATE_OPCODES_NUM,
 260                              &iwm->calib_done_map)) {
 261                         IWM_DBG_CMD(iwm, DBG,
 262                                     "Send calibration %d result\n", i);
 263                         ret |= iwm_send_lmac_ptrough_cmd(iwm,
 264                                         REPLY_PHY_CALIBRATION_CMD,
 265                                         iwm->calib_res[i].buf,
 266                                         iwm->calib_res[i].size, 0);
 267
 268                         kfree(iwm->calib_res[i].buf);
 269                         iwm->calib_res[i].buf = NULL;
 270                         iwm->calib_res[i].size = 0;
 271                 }
 272         }
 273
 274         return ret;
 275 }
 276
 277 int iwm_send_umac_reset(struct iwm_priv *iwm, __le32 reset_flags, bool resp)
 278 {
 279         struct iwm_udma_wifi_cmd udma_cmd = UDMA_UMAC_INIT;
 280         struct iwm_umac_cmd umac_cmd;
 281         struct iwm_umac_cmd_reset reset;
 282
 283         reset.flags = reset_flags;
 284
 285         umac_cmd.id = UMAC_CMD_OPCODE_RESET;
 286         umac_cmd.resp = resp;
 287
 288         return iwm_hal_send_umac_cmd(iwm, &udma_cmd, &umac_cmd, &reset,
 289                                      sizeof(struct iwm_umac_cmd_reset));
 290 }
 291
 292 int iwm_umac_set_config_fix(struct iwm_priv *iwm, u16 tbl, u16 key, u32 value)
 293 {
 294         struct iwm_udma_wifi_cmd udma_cmd = UDMA_UMAC_INIT;
 295         struct iwm_umac_cmd umac_cmd;
 296         struct iwm_umac_cmd_set_param_fix param;
 297
 298         if ((tbl != UMAC_PARAM_TBL_CFG_FIX) &&
 299             (tbl != UMAC_PARAM_TBL_FA_CFG_FIX))
 300                 return -EINVAL;
 301
 302         umac_cmd.id = UMAC_CMD_OPCODE_SET_PARAM_FIX;
 303         umac_cmd.resp = 0;
 304
 305         param.tbl = cpu_to_le16(tbl);
 306         param.key = cpu_to_le16(key);
 307         param.value = cpu_to_le32(value);
 308
 309         return iwm_hal_send_umac_cmd(iwm, &udma_cmd, &umac_cmd, &param,
 310                                      sizeof(struct iwm_umac_cmd_set_param_fix));
 311 }
 312
 313 int iwm_umac_set_config_var(struct iwm_priv *iwm, u16 key,
 314                             void *payload, u16 payload_size)
 315 {
 316         struct iwm_udma_wifi_cmd udma_cmd = UDMA_UMAC_INIT;
 317         struct iwm_umac_cmd umac_cmd;
 318         struct iwm_umac_cmd_set_param_var *param_hdr;
 319         u8 *param;
 320         int ret;
 321
 322         param = kzalloc(payload_size +
 323                         sizeof(struct iwm_umac_cmd_set_param_var), GFP_KERNEL);
 324         if (!param) {
 325                 IWM_ERR(iwm, "Couldn't allocate param\n");
 326                 return -ENOMEM;
 327         }
 328
 329         param_hdr = (struct iwm_umac_cmd_set_param_var *)param;
 330
 331         umac_cmd.id = UMAC_CMD_OPCODE_SET_PARAM_VAR;
 332         umac_cmd.resp = 0;
 333
 334         param_hdr->tbl = cpu_to_le16(UMAC_PARAM_TBL_CFG_VAR);
 335         param_hdr->key = cpu_to_le16(key);
 336         param_hdr->len = cpu_to_le16(payload_size);
 337         memcpy(param + sizeof(struct iwm_umac_cmd_set_param_var),
 338                payload, payload_size);
 339
 340         ret = iwm_hal_send_umac_cmd(iwm, &udma_cmd, &umac_cmd, param,
 341                                     sizeof(struct iwm_umac_cmd_set_param_var) +
 342                                     payload_size);
 343         kfree(param);
 344
 345         return ret;
 346 }
 347
 348 int iwm_send_umac_config(struct iwm_priv *iwm,
 349                          __le32 reset_flags)
 350 {
 351         int ret;
 352
 353         /* Use UMAC default values */
 354         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 355                                       CFG_POWER_INDEX, iwm->conf.power_index);
 356         if (ret < 0)
 357                 return ret;
 358
 359         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_FA_CFG_FIX,
 360                                       CFG_FRAG_THRESHOLD,
 361                                       iwm->conf.frag_threshold);
 362         if (ret < 0)
 363                 return ret;
 364
 365         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 366                                       CFG_RTS_THRESHOLD,
 367                                       iwm->conf.rts_threshold);
 368         if (ret < 0)
 369                 return ret;
 370
 371         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 372                                       CFG_CTS_TO_SELF, iwm->conf.cts_to_self);
 373         if (ret < 0)
 374                 return ret;
 375
 376         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 377                                       CFG_COEX_MODE, iwm->conf.coexist_mode);
 378         if (ret < 0)
 379                 return ret;
 380
 381         /*
 382         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 383                                       CFG_ASSOCIATION_TIMEOUT,
 384                                       iwm->conf.assoc_timeout);
 385         if (ret < 0)
 386                 return ret;
 387
 388         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 389                                       CFG_ROAM_TIMEOUT,
 390                                       iwm->conf.roam_timeout);
 391         if (ret < 0)
 392                 return ret;
 393
 394         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 395                                       CFG_WIRELESS_MODE,
 396                                       WIRELESS_MODE_11A | WIRELESS_MODE_11G);
 397         if (ret < 0)
 398                 return ret;
 399         */
 400
 401         ret = iwm_umac_set_config_var(iwm, CFG_NET_ADDR,
 402                                       iwm_to_ndev(iwm)->dev_addr, ETH_ALEN);
 403         if (ret < 0)
 404                 return ret;
 405
 406         /* UMAC PM static configurations */
 407         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 408                                       CFG_PM_LEGACY_RX_TIMEOUT, 0x12C);
 409         if (ret < 0)
 410                 return ret;
 411
 412         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 413                                       CFG_PM_LEGACY_TX_TIMEOUT, 0x15E);
 414         if (ret < 0)
 415                 return ret;
 416
 417         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 418                                       CFG_PM_CTRL_FLAGS, 0x30001);
 419         if (ret < 0)
 420                 return ret;
 421
 422         ret = iwm_umac_set_config_fix(iwm, UMAC_PARAM_TBL_CFG_FIX,
 423                                       CFG_PM_KEEP_ALIVE_IN_BEACONS, 0x80);
 424         if (ret < 0)
 425                 return ret;
 426
 427         /* reset UMAC */
 428         ret = iwm_send_umac_reset(iwm, reset_flags, 1);
 429         if (ret < 0)
 430                 return ret;
 431
 432         ret = iwm_notif_handle(iwm, UMAC_CMD_OPCODE_RESET, IWM_SRC_UMAC,
 433                                WAIT_NOTIF_TIMEOUT);
 434         if (ret) {
 435                 IWM_ERR(iwm, "Wait for UMAC RESET timeout\n");
 436                 return ret;
 437         }
 438
 439         return ret;
 440 }
 441
 442 int iwm_send_packet(struct iwm_priv *iwm, struct sk_buff *skb, int pool_id)
 443 {
 444         struct iwm_udma_wifi_cmd udma_cmd;
 445         struct iwm_umac_cmd umac_cmd;
 446         struct iwm_tx_info *tx_info = skb_to_tx_info(skb);
 447
 448         udma_cmd.eop = 1; /* always set eop for non-concatenated Tx */
 449         udma_cmd.credit_group = pool_id;
 450         udma_cmd.ra_tid = tx_info->sta << 4 | tx_info->tid;
 451         udma_cmd.lmac_offset = 0;
 452
 453         umac_cmd.id = REPLY_TX;
 454         umac_cmd.color = tx_info->color;
 455         umac_cmd.resp = 0;
 456
 457         return iwm_hal_send_umac_cmd(iwm, &udma_cmd, &umac_cmd,
 458                                      skb->data, skb->len);
 459 }
 460
 461 static int iwm_target_read(struct iwm_priv *iwm, __le32 address,
 462                            u8 *response, u32 resp_size)
 463 {
 464         struct iwm_udma_nonwifi_cmd target_cmd;
 465         struct iwm_nonwifi_cmd *cmd;
 466         u16 seq_num;
 467         int ret = 0;
 468
 469         target_cmd.opcode = UMAC_HDI_OUT_OPCODE_READ;
 470         target_cmd.addr = address;
 471         target_cmd.op1_sz = cpu_to_le32(resp_size);
 472         target_cmd.op2 = 0;
 473         target_cmd.handle_by_hw = 0;
 474         target_cmd.resp = 1;
 475         target_cmd.eop = 1;
 476
 477         ret = iwm_hal_send_target_cmd(iwm, &target_cmd, NULL);
 478         if (ret < 0)
 479                 IWM_ERR(iwm, "Couldn't send READ command\n");
 480
 481         /* When succeding, the send_target routine returns the seq number */
 482         seq_num = ret;
 483
 484         ret = wait_event_interruptible_timeout(iwm->nonwifi_queue,
 485                 (cmd = iwm_get_pending_nonwifi_cmd(iwm, seq_num,
 486                                           UMAC_HDI_OUT_OPCODE_READ)) != NULL,
 487                                                2 * HZ);
 488
 489         if (!ret) {
 490                 IWM_ERR(iwm, "Didn't receive a target READ answer\n");
 491                 return ret;
 492         }
 493
 494         memcpy(response, cmd->buf.hdr + sizeof(struct iwm_udma_in_hdr),
 495                resp_size);
 496
 497         kfree(cmd);
 498
 499         return ret;
 500 }
 501
 502 int iwm_read_mac(struct iwm_priv *iwm, u8 *mac)
 503 {
 504         int ret;
 505         u8 mac_align[ALIGN(ETH_ALEN, 8)];
 506
 507         ret = iwm_target_read(iwm, cpu_to_le32(WICO_MAC_ADDRESS_ADDR),
 508                               mac_align, sizeof(mac_align));
 509         if (ret < 0)
 510                 return ret;
 511
 512         if (is_valid_ether_addr(mac_align))
 513                 memcpy(mac, mac_align, ETH_ALEN);
 514         else {
 515                 IWM_ERR(iwm, "Invalid EEPROM MAC\n");
 516                 memcpy(mac, iwm->conf.mac_addr, ETH_ALEN);
 517                 get_random_bytes(&mac[3], 3);
 518         }
 519
 520         return 0;
 521 }
 522
 523 int iwm_set_tx_key(struct iwm_priv *iwm, u8 key_idx)
 524 {
 525         struct iwm_umac_tx_key_id tx_key_id;
 526
 527         if (!iwm->default_key || !iwm->default_key->in_use)
 528                 return -EINVAL;
 529
 530         tx_key_id.hdr.oid = UMAC_WIFI_IF_CMD_GLOBAL_TX_KEY_ID;
 531         tx_key_id.hdr.buf_size = cpu_to_le16(sizeof(struct iwm_umac_tx_key_id) -
 532                                              sizeof(struct iwm_umac_wifi_if));
 533
 534         tx_key_id.key_idx = key_idx;
 535
 536         return iwm_send_wifi_if_cmd(iwm, &tx_key_id, sizeof(tx_key_id), 1);
 537 }
 538
 539 static int iwm_check_profile(struct iwm_priv *iwm)
 540 {
 541         if (!iwm->umac_profile_active)
 542                 return -EAGAIN;
 543
 544         if (iwm->umac_profile->sec.ucast_cipher != UMAC_CIPHER_TYPE_WEP_40 &&
 545             iwm->umac_profile->sec.ucast_cipher != UMAC_CIPHER_TYPE_WEP_104 &&
 546             iwm->umac_profile->sec.ucast_cipher != UMAC_CIPHER_TYPE_TKIP &&
 547             iwm->umac_profile->sec.ucast_cipher != UMAC_CIPHER_TYPE_CCMP) {
 548                 IWM_ERR(iwm, "Wrong unicast cipher: 0x%x\n",
 549                         iwm->umac_profile->sec.ucast_cipher);
 550                 return -EAGAIN;
 551         }
 552
 553         if (iwm->umac_profile->sec.mcast_cipher != UMAC_CIPHER_TYPE_WEP_40 &&
 554             iwm->umac_profile->sec.mcast_cipher != UMAC_CIPHER_TYPE_WEP_104 &&
 555             iwm->umac_profile->sec.mcast_cipher != UMAC_CIPHER_TYPE_TKIP &&
 556             iwm->umac_profile->sec.mcast_cipher != UMAC_CIPHER_TYPE_CCMP) {
 557                 IWM_ERR(iwm, "Wrong multicast cipher: 0x%x\n",
 558                         iwm->umac_profile->sec.mcast_cipher);
 559                 return -EAGAIN;
 560         }
 561
 562         if ((iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_40 ||
 563              iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_104) &&
 564             (iwm->umac_profile->sec.ucast_cipher !=
 565              iwm->umac_profile->sec.mcast_cipher)) {
 566                 IWM_ERR(iwm, "Unicast and multicast ciphers differ for WEP\n");
 567         }
 568
 569         return 0;
 570 }
 571
 572 int iwm_set_key(struct iwm_priv *iwm, bool remove, bool set_tx_key,
 573                 struct iwm_key *key)
 574 {
 575         int ret;
 576         u8 cmd[64], *sta_addr, *key_data, key_len;
 577         s8 key_idx;
 578         u16 cmd_size = 0;
 579         struct iwm_umac_key_hdr *key_hdr = &key->hdr;
 580         struct iwm_umac_key_wep40 *wep40 = (struct iwm_umac_key_wep40 *)cmd;
 581         struct iwm_umac_key_wep104 *wep104 = (struct iwm_umac_key_wep104 *)cmd;
 582         struct iwm_umac_key_tkip *tkip = (struct iwm_umac_key_tkip *)cmd;
 583         struct iwm_umac_key_ccmp *ccmp = (struct iwm_umac_key_ccmp *)cmd;
 584
 585         if (set_tx_key)
 586                 iwm->default_key = key;
 587
 588         /*
 589          * We check if our current profile is valid.
 590          * If not, we dont push the key, we just cache them,
 591          * so that with the next siwsessid call, the keys
 592          * will be actually pushed.
 593          */
 594         if (!remove) {
 595                 ret = iwm_check_profile(iwm);
 596                 if (ret < 0)
 597                         return ret;
 598         }
 599
 600         sta_addr = key->hdr.mac;
 601         key_data = key->key;
 602         key_len = key->key_len;
 603         key_idx = key->hdr.key_idx;
 604
 605         if (!remove) {
 606                 IWM_DBG_WEXT(iwm, DBG, "key_idx:%d set tx key:%d\n",
 607                              key_idx, set_tx_key);
 608                 IWM_DBG_WEXT(iwm, DBG, "key_len:%d\n", key_len);
 609                 IWM_DBG_WEXT(iwm, DBG, "MAC:%pM, idx:%d, multicast:%d\n",
 610                        key_hdr->mac, key_hdr->key_idx, key_hdr->multicast);
 611
 612                 IWM_DBG_WEXT(iwm, DBG, "profile: mcast:0x%x, ucast:0x%x\n",
 613                              iwm->umac_profile->sec.mcast_cipher,
 614                              iwm->umac_profile->sec.ucast_cipher);
 615                 IWM_DBG_WEXT(iwm, DBG, "profile: auth_type:0x%x, flags:0x%x\n",
 616                              iwm->umac_profile->sec.auth_type,
 617                              iwm->umac_profile->sec.flags);
 618
 619                 switch (key->alg) {
 620                 case UMAC_CIPHER_TYPE_WEP_40:
 621                         wep40->hdr.oid = UMAC_WIFI_IF_CMD_ADD_WEP40_KEY;
 622                         wep40->hdr.buf_size =
 623                                 cpu_to_le16(sizeof(struct iwm_umac_key_wep40) -
 624                                             sizeof(struct iwm_umac_wifi_if));
 625
 626                         memcpy(&wep40->key_hdr, key_hdr,
 627                                sizeof(struct iwm_umac_key_hdr));
 628                         memcpy(wep40->key, key_data, key_len);
 629                         wep40->static_key = 1;
 630
 631                         cmd_size = sizeof(struct iwm_umac_key_wep40);
 632                         break;
 633
 634                 case UMAC_CIPHER_TYPE_WEP_104:
 635                         wep104->hdr.oid = UMAC_WIFI_IF_CMD_ADD_WEP104_KEY;
 636                         wep104->hdr.buf_size =
 637                                 cpu_to_le16(sizeof(struct iwm_umac_key_wep104) -
 638                                             sizeof(struct iwm_umac_wifi_if));
 639
 640                         memcpy(&wep104->key_hdr, key_hdr,
 641                                sizeof(struct iwm_umac_key_hdr));
 642                         memcpy(wep104->key, key_data, key_len);
 643                         wep104->static_key = 1;
 644
 645                         cmd_size = sizeof(struct iwm_umac_key_wep104);
 646                         break;
 647
 648                 case UMAC_CIPHER_TYPE_CCMP:
 649                         key_hdr->key_idx++;
 650                         ccmp->hdr.oid = UMAC_WIFI_IF_CMD_ADD_CCMP_KEY;
 651                         ccmp->hdr.buf_size =
 652                                 cpu_to_le16(sizeof(struct iwm_umac_key_ccmp) -
 653                                             sizeof(struct iwm_umac_wifi_if));
 654
 655                         memcpy(&ccmp->key_hdr, key_hdr,
 656                                sizeof(struct iwm_umac_key_hdr));
 657
 658                         memcpy(ccmp->key, key_data, key_len);
 659
 660                         if (key->flags & IW_ENCODE_EXT_RX_SEQ_VALID)
 661                                 memcpy(ccmp->iv_count, key->rx_seq, 6);
 662
 663                         cmd_size = sizeof(struct iwm_umac_key_ccmp);
 664                         break;
 665
 666                 case UMAC_CIPHER_TYPE_TKIP:
 667                         key_hdr->key_idx++;
 668                         tkip->hdr.oid = UMAC_WIFI_IF_CMD_ADD_TKIP_KEY;
 669                         tkip->hdr.buf_size =
 670                                 cpu_to_le16(sizeof(struct iwm_umac_key_tkip) -
 671                                             sizeof(struct iwm_umac_wifi_if));
 672
 673                         memcpy(&tkip->key_hdr, key_hdr,
 674                                sizeof(struct iwm_umac_key_hdr));
 675
 676                         memcpy(tkip->tkip_key, key_data, IWM_TKIP_KEY_SIZE);
 677                         memcpy(tkip->mic_tx_key, key_data + IWM_TKIP_KEY_SIZE,
 678                                IWM_TKIP_MIC_SIZE);
 679                         memcpy(tkip->mic_rx_key,
 680                                key_data + IWM_TKIP_KEY_SIZE + IWM_TKIP_MIC_SIZE,
 681                                IWM_TKIP_MIC_SIZE);
 682
 683                         if (key->flags & IW_ENCODE_EXT_RX_SEQ_VALID)
 684                                 memcpy(ccmp->iv_count, key->rx_seq, 6);
 685
 686                         cmd_size = sizeof(struct iwm_umac_key_tkip);
 687                         break;
 688
 689                 default:
 690                         return -ENOTSUPP;
 691                 }
 692
 693                 if ((key->alg == UMAC_CIPHER_TYPE_CCMP) ||
 694                     (key->alg == UMAC_CIPHER_TYPE_TKIP))
 695                         /*
 696                          * UGLY_UGLY_UGLY
 697                          * Copied HACK from the MWG driver.
 698                          * Without it, the key is set before the second
 699                          * EAPOL frame is sent, and the latter is thus
 700                          * encrypted.
 701                          */
 702                         schedule_timeout_interruptible(usecs_to_jiffies(300));
 703
 704                 ret =  iwm_send_wifi_if_cmd(iwm, cmd, cmd_size, 1);
 705                 if (ret < 0)
 706                         goto err;
 707
 708                 /*
 709                  * We need a default key only if it is set and
 710                  * if we're doing WEP.
 711                  */
 712                 if (iwm->default_key == key &&
 713                         ((key->alg == UMAC_CIPHER_TYPE_WEP_40) ||
 714                          (key->alg == UMAC_CIPHER_TYPE_WEP_104))) {
 715                         ret = iwm_set_tx_key(iwm, key_idx);
 716                         if (ret < 0)
 717                                 goto err;
 718                 }
 719         } else {
 720                 struct iwm_umac_key_remove key_remove;
 721
 722                 key_remove.hdr.oid = UMAC_WIFI_IF_CMD_REMOVE_KEY;
 723                 key_remove.hdr.buf_size =
 724                         cpu_to_le16(sizeof(struct iwm_umac_key_remove) -
 725                                     sizeof(struct iwm_umac_wifi_if));
 726                 memcpy(&key_remove.key_hdr, key_hdr,
 727                        sizeof(struct iwm_umac_key_hdr));
 728
 729                 ret =  iwm_send_wifi_if_cmd(iwm, &key_remove,
 730                                             sizeof(struct iwm_umac_key_remove),
 731                                             1);
 732                 if (ret < 0)
 733                         return ret;
 734
 735                 iwm->keys[key_idx].in_use = 0;
 736         }
 737
 738         return 0;
 739
 740  err:
 741         kfree(key);
 742         return ret;
 743 }
 744
 745
 746 int iwm_send_mlme_profile(struct iwm_priv *iwm)
 747 {
 748         int ret, i;
 749         struct iwm_umac_profile profile;
 750
 751         memcpy(&profile, iwm->umac_profile, sizeof(profile));
 752
 753         profile.hdr.oid = UMAC_WIFI_IF_CMD_SET_PROFILE;
 754         profile.hdr.buf_size = cpu_to_le16(sizeof(struct iwm_umac_profile) -
 755                                            sizeof(struct iwm_umac_wifi_if));
 756
 757         ret = iwm_send_wifi_if_cmd(iwm, &profile, sizeof(profile), 1);
 758         if (ret < 0) {
 759                 IWM_ERR(iwm, "Send profile command failed\n");
 760                 return ret;
 761         }
 762
 763         for (i = 0; i < IWM_NUM_KEYS; i++)
 764                 if (iwm->keys[i].in_use) {
 765                         int default_key = 0;
 766                         struct iwm_key *key = &iwm->keys[i];
 767
 768                         if (key == iwm->default_key)
 769                                 default_key = 1;
 770
 771                         /* Wait for the profile before sending the keys */
 772                         wait_event_interruptible_timeout(iwm->mlme_queue,
 773                              (test_bit(IWM_STATUS_ASSOCIATING, &iwm->status) ||
 774                               test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)),
 775                                                          3 * HZ);
 776
 777                         ret = iwm_set_key(iwm, 0, default_key, key);
 778                         if (ret < 0)
 779                                 return ret;
 780                 }
 781
 782         return 0;
 783 }
 784
 785 int iwm_invalidate_mlme_profile(struct iwm_priv *iwm)
 786 {
 787         struct iwm_umac_invalidate_profile invalid;
 788         int ret;
 789
 790         invalid.hdr.oid = UMAC_WIFI_IF_CMD_INVALIDATE_PROFILE;
 791         invalid.hdr.buf_size =
 792                 cpu_to_le16(sizeof(struct iwm_umac_invalidate_profile) -
 793                             sizeof(struct iwm_umac_wifi_if));
 794
 795         invalid.reason = WLAN_REASON_UNSPECIFIED;
 796
 797         ret = iwm_send_wifi_if_cmd(iwm, &invalid, sizeof(invalid), 1);
 798         if (ret < 0)
 799                 return ret;
 800
 801         ret = wait_event_interruptible_timeout(iwm->mlme_queue,
 802                                 (iwm->umac_profile_active == 0), 2 * HZ);
 803         if (!ret)
 804                 return -EBUSY;
 805
 806         return 0;
 807 }
 808
 809 int iwm_send_umac_stats_req(struct iwm_priv *iwm, u32 flags)
 810 {
 811         struct iwm_udma_wifi_cmd udma_cmd = UDMA_UMAC_INIT;
 812         struct iwm_umac_cmd umac_cmd;
 813         struct iwm_umac_cmd_stats_req stats_req;
 814
 815         stats_req.flags = cpu_to_le32(flags);
 816
 817         umac_cmd.id = UMAC_CMD_OPCODE_STATISTIC_REQUEST;
 818         umac_cmd.resp = 0;
 819
 820         return iwm_hal_send_umac_cmd(iwm, &udma_cmd, &umac_cmd, &stats_req,
 821                                      sizeof(struct iwm_umac_cmd_stats_req));
 822 }
 823
 824 int iwm_send_umac_channel_list(struct iwm_priv *iwm)
 825 {
 826         struct iwm_udma_wifi_cmd udma_cmd = UDMA_UMAC_INIT;
 827         struct iwm_umac_cmd umac_cmd;
 828         struct iwm_umac_cmd_get_channel_list *ch_list;
 829         int size = sizeof(struct iwm_umac_cmd_get_channel_list) +
 830                    sizeof(struct iwm_umac_channel_info) * 4;
 831         int ret;
 832
 833         ch_list = kzalloc(size, GFP_KERNEL);
 834         if (!ch_list) {
 835                 IWM_ERR(iwm, "Couldn't allocate channel list cmd\n");
 836                 return -ENOMEM;
 837         }
 838
 839         ch_list->ch[0].band = UMAC_BAND_2GHZ;
 840         ch_list->ch[0].type = UMAC_CHANNEL_WIDTH_20MHZ;
 841         ch_list->ch[0].flags = UMAC_CHANNEL_FLAG_VALID;
 842
 843         ch_list->ch[1].band = UMAC_BAND_5GHZ;
 844         ch_list->ch[1].type = UMAC_CHANNEL_WIDTH_20MHZ;
 845         ch_list->ch[1].flags = UMAC_CHANNEL_FLAG_VALID;
 846
 847         ch_list->ch[2].band = UMAC_BAND_2GHZ;
 848         ch_list->ch[2].type = UMAC_CHANNEL_WIDTH_20MHZ;
 849         ch_list->ch[2].flags = UMAC_CHANNEL_FLAG_VALID | UMAC_CHANNEL_FLAG_IBSS;
 850
 851         ch_list->ch[3].band = UMAC_BAND_5GHZ;
 852         ch_list->ch[3].type = UMAC_CHANNEL_WIDTH_20MHZ;
 853         ch_list->ch[3].flags = UMAC_CHANNEL_FLAG_VALID | UMAC_CHANNEL_FLAG_IBSS;
 854
 855         ch_list->count = cpu_to_le16(4);
 856
 857         umac_cmd.id = UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST;
 858         umac_cmd.resp = 1;
 859
 860         ret = iwm_hal_send_umac_cmd(iwm, &udma_cmd, &umac_cmd, ch_list, size);
 861
 862         kfree(ch_list);
 863
 864         return ret;
 865 }
 866
 867 int iwm_scan_ssids(struct iwm_priv *iwm, struct cfg80211_ssid *ssids,
 868                    int ssid_num)
 869 {
 870         struct iwm_umac_cmd_scan_request req;
 871         int i, ret;
 872
 873         memset(&req, 0, sizeof(struct iwm_umac_cmd_scan_request));
 874
 875         req.hdr.oid = UMAC_WIFI_IF_CMD_SCAN_REQUEST;
 876         req.hdr.buf_size = cpu_to_le16(sizeof(struct iwm_umac_cmd_scan_request)
 877                                        - sizeof(struct iwm_umac_wifi_if));
 878         req.type = UMAC_WIFI_IF_SCAN_TYPE_USER;
 879         req.timeout = 2;
 880         req.seq_num = iwm->scan_id;
 881         req.ssid_num = min(ssid_num, UMAC_WIFI_IF_PROBE_OPTION_MAX);
 882
 883         for (i = 0; i < req.ssid_num; i++) {
 884                 memcpy(req.ssids[i].ssid, ssids[i].ssid, ssids[i].ssid_len);
 885                 req.ssids[i].ssid_len = ssids[i].ssid_len;
 886         }
 887
 888         ret = iwm_send_wifi_if_cmd(iwm, &req, sizeof(req), 0);
 889         if (ret < 0) {
 890                 IWM_ERR(iwm, "Couldn't send scan request\n");
 891                 return ret;
 892         }
 893
 894         iwm->scan_id = iwm->scan_id++ % IWM_SCAN_ID_MAX;
 895
 896         return 0;
 897 }
 898
 899 int iwm_scan_one_ssid(struct iwm_priv *iwm, u8 *ssid, int ssid_len)
 900 {
 901         struct cfg80211_ssid one_ssid;
 902
 903         if (test_and_set_bit(IWM_STATUS_SCANNING, &iwm->status))
 904                 return 0;
 905
 906         one_ssid.ssid_len = min(ssid_len, IEEE80211_MAX_SSID_LEN);
 907         memcpy(&one_ssid.ssid, ssid, one_ssid.ssid_len);
 908
 909         return iwm_scan_ssids(iwm, &one_ssid, 1);
 910 }
 911
 912 int iwm_target_reset(struct iwm_priv *iwm)
 913 {
 914         struct iwm_udma_nonwifi_cmd target_cmd;
 915
 916         target_cmd.opcode = UMAC_HDI_OUT_OPCODE_REBOOT;
 917         target_cmd.addr = 0;
 918         target_cmd.op1_sz = 0;
 919         target_cmd.op2 = 0;
 920         target_cmd.handle_by_hw = 0;
 921         target_cmd.resp = 0;
 922         target_cmd.eop = 1;
 923
 924         return iwm_hal_send_target_cmd(iwm, &target_cmd, NULL);
 925 }