drivers/net/wireless/ath/ath6kl/init.c

   1
   2 /*
   3  * Copyright (c) 2011 Atheros Communications Inc.
   4  * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/moduleparam.h>
  22 #include <linux/errno.h>
  23 #include <linux/export.h>
  24 #include <linux/of.h>
  25 #include <linux/mmc/sdio_func.h>
  26 #include <linux/vmalloc.h>
  27
  28 #include "core.h"
  29 #include "cfg80211.h"
  30 #include "target.h"
  31 #include "debug.h"
  32 #include "hif-ops.h"
  33 #include "htc-ops.h"
  34
  35 static const struct ath6kl_hw hw_list[] = {
  36         {
  37                 .id                             = AR6003_HW_2_0_VERSION,
  38                 .name                           = "ar6003 hw 2.0",
  39                 .dataset_patch_addr             = 0x57e884,
  40                 .app_load_addr                  = 0x543180,
  41                 .board_ext_data_addr            = 0x57e500,
  42                 .reserved_ram_size              = 6912,
  43                 .refclk_hz                      = 26000000,
  44                 .uarttx_pin                     = 8,
  45                 .flags                          = ATH6KL_HW_SDIO_CRC_ERROR_WAR,
  46
  47                 /* hw2.0 needs override address hardcoded */
  48                 .app_start_override_addr        = 0x944C00,
  49
  50                 .fw = {
  51                         .dir            = AR6003_HW_2_0_FW_DIR,
  52                         .otp            = AR6003_HW_2_0_OTP_FILE,
  53                         .fw             = AR6003_HW_2_0_FIRMWARE_FILE,
  54                         .tcmd           = AR6003_HW_2_0_TCMD_FIRMWARE_FILE,
  55                         .patch          = AR6003_HW_2_0_PATCH_FILE,
  56                 },
  57
  58                 .fw_board               = AR6003_HW_2_0_BOARD_DATA_FILE,
  59                 .fw_default_board       = AR6003_HW_2_0_DEFAULT_BOARD_DATA_FILE,
  60         },
  61         {
  62                 .id                             = AR6003_HW_2_1_1_VERSION,
  63                 .name                           = "ar6003 hw 2.1.1",
  64                 .dataset_patch_addr             = 0x57ff74,
  65                 .app_load_addr                  = 0x1234,
  66                 .board_ext_data_addr            = 0x542330,
  67                 .reserved_ram_size              = 512,
  68                 .refclk_hz                      = 26000000,
  69                 .uarttx_pin                     = 8,
  70                 .testscript_addr                = 0x57ef74,
  71                 .flags                          = ATH6KL_HW_SDIO_CRC_ERROR_WAR,
  72
  73                 .fw = {
  74                         .dir            = AR6003_HW_2_1_1_FW_DIR,
  75                         .otp            = AR6003_HW_2_1_1_OTP_FILE,
  76                         .fw             = AR6003_HW_2_1_1_FIRMWARE_FILE,
  77                         .tcmd           = AR6003_HW_2_1_1_TCMD_FIRMWARE_FILE,
  78                         .patch          = AR6003_HW_2_1_1_PATCH_FILE,
  79                         .utf            = AR6003_HW_2_1_1_UTF_FIRMWARE_FILE,
  80                         .testscript     = AR6003_HW_2_1_1_TESTSCRIPT_FILE,
  81                 },
  82
  83                 .fw_board               = AR6003_HW_2_1_1_BOARD_DATA_FILE,
  84                 .fw_default_board = AR6003_HW_2_1_1_DEFAULT_BOARD_DATA_FILE,
  85         },
  86         {
  87                 .id                             = AR6004_HW_1_0_VERSION,
  88                 .name                           = "ar6004 hw 1.0",
  89                 .dataset_patch_addr             = 0x57e884,
  90                 .app_load_addr                  = 0x1234,
  91                 .board_ext_data_addr            = 0x437000,
  92                 .reserved_ram_size              = 19456,
  93                 .board_addr                     = 0x433900,
  94                 .refclk_hz                      = 26000000,
  95                 .uarttx_pin                     = 11,
  96                 .flags                          = 0,
  97
  98                 .fw = {
  99                         .dir            = AR6004_HW_1_0_FW_DIR,
 100                         .fw             = AR6004_HW_1_0_FIRMWARE_FILE,
 101                 },
 102
 103                 .fw_board               = AR6004_HW_1_0_BOARD_DATA_FILE,
 104                 .fw_default_board       = AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE,
 105         },
 106         {
 107                 .id                             = AR6004_HW_1_1_VERSION,
 108                 .name                           = "ar6004 hw 1.1",
 109                 .dataset_patch_addr             = 0x57e884,
 110                 .app_load_addr                  = 0x1234,
 111                 .board_ext_data_addr            = 0x437000,
 112                 .reserved_ram_size              = 11264,
 113                 .board_addr                     = 0x43d400,
 114                 .refclk_hz                      = 40000000,
 115                 .uarttx_pin                     = 11,
 116                 .flags                          = 0,
 117                 .fw = {
 118                         .dir            = AR6004_HW_1_1_FW_DIR,
 119                         .fw             = AR6004_HW_1_1_FIRMWARE_FILE,
 120                 },
 121
 122                 .fw_board               = AR6004_HW_1_1_BOARD_DATA_FILE,
 123                 .fw_default_board       = AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE,
 124         },
 125         {
 126                 .id                             = AR6004_HW_1_2_VERSION,
 127                 .name                           = "ar6004 hw 1.2",
 128                 .dataset_patch_addr             = 0x436ecc,
 129                 .app_load_addr                  = 0x1234,
 130                 .board_ext_data_addr            = 0x437000,
 131                 .reserved_ram_size              = 9216,
 132                 .board_addr                     = 0x435c00,
 133                 .refclk_hz                      = 40000000,
 134                 .uarttx_pin                     = 11,
 135                 .flags                          = 0,
 136
 137                 .fw = {
 138                         .dir            = AR6004_HW_1_2_FW_DIR,
 139                         .fw             = AR6004_HW_1_2_FIRMWARE_FILE,
 140                 },
 141                 .fw_board               = AR6004_HW_1_2_BOARD_DATA_FILE,
 142                 .fw_default_board       = AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE,
 143         },
 144         {
 145                 .id                             = AR6004_HW_1_3_VERSION,
 146                 .name                           = "ar6004 hw 1.3",
 147                 .dataset_patch_addr             = 0x437860,
 148                 .app_load_addr                  = 0x1234,
 149                 .board_ext_data_addr            = 0x437000,
 150                 .reserved_ram_size              = 7168,
 151                 .board_addr                     = 0x436400,
 152                 .refclk_hz                      = 40000000,
 153                 .uarttx_pin                     = 11,
 154                 .flags                          = 0,
 155
 156                 .fw = {
 157                         .dir            = AR6004_HW_1_3_FW_DIR,
 158                         .fw             = AR6004_HW_1_3_FIRMWARE_FILE,
 159                 },
 160
 161                 .fw_board               = AR6004_HW_1_3_BOARD_DATA_FILE,
 162                 .fw_default_board       = AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE,
 163         },
 164 };
 165
 166 /*
 167  * Include definitions here that can be used to tune the WLAN module
 168  * behavior. Different customers can tune the behavior as per their needs,
 169  * here.
 170  */
 171
 172 /*
 173  * This configuration item enable/disable keepalive support.
 174  * Keepalive support: In the absence of any data traffic to AP, null
 175  * frames will be sent to the AP at periodic interval, to keep the association
 176  * active. This configuration item defines the periodic interval.
 177  * Use value of zero to disable keepalive support
 178  * Default: 60 seconds
 179  */
 180 #define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60
 181
 182 /*
 183  * This configuration item sets the value of disconnect timeout
 184  * Firmware delays sending the disconnec event to the host for this
 185  * timeout after is gets disconnected from the current AP.
 186  * If the firmware successly roams within the disconnect timeout
 187  * it sends a new connect event
 188  */
 189 #define WLAN_CONFIG_DISCONNECT_TIMEOUT 10
 190
 191
 192 #define ATH6KL_DATA_OFFSET    64
 193 struct sk_buff *ath6kl_buf_alloc(int size)
 194 {
 195         struct sk_buff *skb;
 196         u16 reserved;
 197
 198         /* Add chacheline space at front and back of buffer */
 199         reserved = roundup((2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET +
 200                    sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES, 4);
 201         skb = dev_alloc_skb(size + reserved);
 202
 203         if (skb)
 204                 skb_reserve(skb, reserved - L1_CACHE_BYTES);
 205         return skb;
 206 }
 207
 208 void ath6kl_init_profile_info(struct ath6kl_vif *vif)
 209 {
 210         vif->ssid_len = 0;
 211         memset(vif->ssid, 0, sizeof(vif->ssid));
 212
 213         vif->dot11_auth_mode = OPEN_AUTH;
 214         vif->auth_mode = NONE_AUTH;
 215         vif->prwise_crypto = NONE_CRYPT;
 216         vif->prwise_crypto_len = 0;
 217         vif->grp_crypto = NONE_CRYPT;
 218         vif->grp_crypto_len = 0;
 219         memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
 220         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
 221         memset(vif->bssid, 0, sizeof(vif->bssid));
 222         vif->bss_ch = 0;
 223 }
 224
 225 static int ath6kl_set_host_app_area(struct ath6kl *ar)
 226 {
 227         u32 address, data;
 228         struct host_app_area host_app_area;
 229
 230         /* Fetch the address of the host_app_area_s
 231          * instance in the host interest area */
 232         address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest));
 233         address = TARG_VTOP(ar->target_type, address);
 234
 235         if (ath6kl_diag_read32(ar, address, &data))
 236                 return -EIO;
 237
 238         address = TARG_VTOP(ar->target_type, data);
 239         host_app_area.wmi_protocol_ver = cpu_to_le32(WMI_PROTOCOL_VERSION);
 240         if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area,
 241                               sizeof(struct host_app_area)))
 242                 return -EIO;
 243
 244         return 0;
 245 }
 246
 247 static inline void set_ac2_ep_map(struct ath6kl *ar,
 248                                   u8 ac,
 249                                   enum htc_endpoint_id ep)
 250 {
 251         ar->ac2ep_map[ac] = ep;
 252         ar->ep2ac_map[ep] = ac;
 253 }
 254
 255 /* connect to a service */
 256 static int ath6kl_connectservice(struct ath6kl *ar,
 257                                  struct htc_service_connect_req  *con_req,
 258                                  char *desc)
 259 {
 260         int status;
 261         struct htc_service_connect_resp response;
 262
 263         memset(&response, 0, sizeof(response));
 264
 265         status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response);
 266         if (status) {
 267                 ath6kl_err("failed to connect to %s service status:%d\n",
 268                            desc, status);
 269                 return status;
 270         }
 271
 272         switch (con_req->svc_id) {
 273         case WMI_CONTROL_SVC:
 274                 if (test_bit(WMI_ENABLED, &ar->flag))
 275                         ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint);
 276                 ar->ctrl_ep = response.endpoint;
 277                 break;
 278         case WMI_DATA_BE_SVC:
 279                 set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint);
 280                 break;
 281         case WMI_DATA_BK_SVC:
 282                 set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint);
 283                 break;
 284         case WMI_DATA_VI_SVC:
 285                 set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint);
 286                 break;
 287         case WMI_DATA_VO_SVC:
 288                 set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint);
 289                 break;
 290         default:
 291                 ath6kl_err("service id is not mapped %d\n", con_req->svc_id);
 292                 return -EINVAL;
 293         }
 294
 295         return 0;
 296 }
 297
 298 static int ath6kl_init_service_ep(struct ath6kl *ar)
 299 {
 300         struct htc_service_connect_req connect;
 301
 302         memset(&connect, 0, sizeof(connect));
 303
 304         /* these fields are the same for all service endpoints */
 305         connect.ep_cb.tx_comp_multi = ath6kl_tx_complete;
 306         connect.ep_cb.rx = ath6kl_rx;
 307         connect.ep_cb.rx_refill = ath6kl_rx_refill;
 308         connect.ep_cb.tx_full = ath6kl_tx_queue_full;
 309
 310         /*
 311          * Set the max queue depth so that our ath6kl_tx_queue_full handler
 312          * gets called.
 313         */
 314         connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH;
 315         connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4;
 316         if (!connect.ep_cb.rx_refill_thresh)
 317                 connect.ep_cb.rx_refill_thresh++;
 318
 319         /* connect to control service */
 320         connect.svc_id = WMI_CONTROL_SVC;
 321         if (ath6kl_connectservice(ar, &connect, "WMI CONTROL"))
 322                 return -EIO;
 323
 324         connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN;
 325
 326         /*
 327          * Limit the HTC message size on the send path, although e can
 328          * receive A-MSDU frames of 4K, we will only send ethernet-sized
 329          * (802.3) frames on the send path.
 330          */
 331         connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH;
 332
 333         /*
 334          * To reduce the amount of committed memory for larger A_MSDU
 335          * frames, use the recv-alloc threshold mechanism for larger
 336          * packets.
 337          */
 338         connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE;
 339         connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf;
 340
 341         /*
 342          * For the remaining data services set the connection flag to
 343          * reduce dribbling, if configured to do so.
 344          */
 345         connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB;
 346         connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK;
 347         connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF;
 348
 349         connect.svc_id = WMI_DATA_BE_SVC;
 350
 351         if (ath6kl_connectservice(ar, &connect, "WMI DATA BE"))
 352                 return -EIO;
 353
 354         /* connect to back-ground map this to WMI LOW_PRI */
 355         connect.svc_id = WMI_DATA_BK_SVC;
 356         if (ath6kl_connectservice(ar, &connect, "WMI DATA BK"))
 357                 return -EIO;
 358
 359         /* connect to Video service, map this to HI PRI */
 360         connect.svc_id = WMI_DATA_VI_SVC;
 361         if (ath6kl_connectservice(ar, &connect, "WMI DATA VI"))
 362                 return -EIO;
 363
 364         /*
 365          * Connect to VO service, this is currently not mapped to a WMI
 366          * priority stream due to historical reasons. WMI originally
 367          * defined 3 priorities over 3 mailboxes We can change this when
 368          * WMI is reworked so that priorities are not dependent on
 369          * mailboxes.
 370          */
 371         connect.svc_id = WMI_DATA_VO_SVC;
 372         if (ath6kl_connectservice(ar, &connect, "WMI DATA VO"))
 373                 return -EIO;
 374
 375         return 0;
 376 }
 377
 378 void ath6kl_init_control_info(struct ath6kl_vif *vif)
 379 {
 380         ath6kl_init_profile_info(vif);
 381         vif->def_txkey_index = 0;
 382         memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
 383         vif->ch_hint = 0;
 384 }
 385
 386 /*
 387  * Set HTC/Mbox operational parameters, this can only be called when the
 388  * target is in the BMI phase.
 389  */
 390 static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val,
 391                                  u8 htc_ctrl_buf)
 392 {
 393         int status;
 394         u32 blk_size;
 395
 396         blk_size = ar->mbox_info.block_size;
 397
 398         if (htc_ctrl_buf)
 399                 blk_size |=  ((u32)htc_ctrl_buf) << 16;
 400
 401         /* set the host interest area for the block size */
 402         status = ath6kl_bmi_write_hi32(ar, hi_mbox_io_block_sz, blk_size);
 403         if (status) {
 404                 ath6kl_err("bmi_write_memory for IO block size failed\n");
 405                 goto out;
 406         }
 407
 408         ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n",
 409                    blk_size,
 410                    ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)));
 411
 412         if (mbox_isr_yield_val) {
 413                 /* set the host interest area for the mbox ISR yield limit */
 414                 status = ath6kl_bmi_write_hi32(ar, hi_mbox_isr_yield_limit,
 415                                                mbox_isr_yield_val);
 416                 if (status) {
 417                         ath6kl_err("bmi_write_memory for yield limit failed\n");
 418                         goto out;
 419                 }
 420         }
 421
 422 out:
 423         return status;
 424 }
 425
 426 static int ath6kl_target_config_wlan_params(struct ath6kl *ar, int idx)
 427 {
 428         int ret;
 429
 430         /*
 431          * Configure the device for rx dot11 header rules. "0,0" are the
 432          * default values. Required if checksum offload is needed. Set
 433          * RxMetaVersion to 2.
 434          */
 435         ret = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, idx,
 436                                                  ar->rx_meta_ver, 0, 0);
 437         if (ret) {
 438                 ath6kl_err("unable to set the rx frame format: %d\n", ret);
 439                 return ret;
 440         }
 441
 442         if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) {
 443                 ret = ath6kl_wmi_pmparams_cmd(ar->wmi, idx, 0, 1, 0, 0, 1,
 444                                               IGNORE_PS_FAIL_DURING_SCAN);
 445                 if (ret) {
 446                         ath6kl_err("unable to set power save fail event policy: %d\n",
 447                                    ret);
 448                         return ret;
 449                 }
 450         }
 451
 452         if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) {
 453                 ret = ath6kl_wmi_set_lpreamble_cmd(ar->wmi, idx, 0,
 454                                                    WMI_FOLLOW_BARKER_IN_ERP);
 455                 if (ret) {
 456                         ath6kl_err("unable to set barker preamble policy: %d\n",
 457                                    ret);
 458                         return ret;
 459                 }
 460         }
 461
 462         ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, idx,
 463                                            WLAN_CONFIG_KEEP_ALIVE_INTERVAL);
 464         if (ret) {
 465                 ath6kl_err("unable to set keep alive interval: %d\n", ret);
 466                 return ret;
 467         }
 468
 469         ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, idx,
 470                                          WLAN_CONFIG_DISCONNECT_TIMEOUT);
 471         if (ret) {
 472                 ath6kl_err("unable to set disconnect timeout: %d\n", ret);
 473                 return ret;
 474         }
 475
 476         if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) {
 477                 ret = ath6kl_wmi_set_wmm_txop(ar->wmi, idx, WMI_TXOP_DISABLED);
 478                 if (ret) {
 479                         ath6kl_err("unable to set txop bursting: %d\n", ret);
 480                         return ret;
 481                 }
 482         }
 483
 484         if (ar->p2p && (ar->vif_max == 1 || idx)) {
 485                 ret = ath6kl_wmi_info_req_cmd(ar->wmi, idx,
 486                                               P2P_FLAG_CAPABILITIES_REQ |
 487                                               P2P_FLAG_MACADDR_REQ |
 488                                               P2P_FLAG_HMODEL_REQ);
 489                 if (ret) {
 490                         ath6kl_dbg(ATH6KL_DBG_TRC,
 491                                    "failed to request P2P capabilities (%d) - assuming P2P not supported\n",
 492                                    ret);
 493                         ar->p2p = false;
 494                 }
 495         }
 496
 497         if (ar->p2p && (ar->vif_max == 1 || idx)) {
 498                 /* Enable Probe Request reporting for P2P */
 499                 ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, idx, true);
 500                 if (ret) {
 501                         ath6kl_dbg(ATH6KL_DBG_TRC,
 502                                    "failed to enable Probe Request reporting (%d)\n",
 503                                    ret);
 504                 }
 505         }
 506
 507         return ret;
 508 }
 509
 510 int ath6kl_configure_target(struct ath6kl *ar)
 511 {
 512         u32 param, ram_reserved_size;
 513         u8 fw_iftype, fw_mode = 0, fw_submode = 0;
 514         int i, status;
 515
 516         param = !!(ar->conf_flags & ATH6KL_CONF_UART_DEBUG);
 517         if (ath6kl_bmi_write_hi32(ar, hi_serial_enable, param)) {
 518                 ath6kl_err("bmi_write_memory for uart debug failed\n");
 519                 return -EIO;
 520         }
 521
 522         /*
 523          * Note: Even though the firmware interface type is
 524          * chosen as BSS_STA for all three interfaces, can
 525          * be configured to IBSS/AP as long as the fw submode
 526          * remains normal mode (0 - AP, STA and IBSS). But
 527          * due to an target assert in firmware only one interface is
 528          * configured for now.
 529          */
 530         fw_iftype = HI_OPTION_FW_MODE_BSS_STA;
 531
 532         for (i = 0; i < ar->vif_max; i++)
 533                 fw_mode |= fw_iftype << (i * HI_OPTION_FW_MODE_BITS);
 534
 535         /*
 536          * Submodes when fw does not support dynamic interface
 537          * switching:
 538          *              vif[0] - AP/STA/IBSS
 539          *              vif[1] - "P2P dev"/"P2P GO"/"P2P Client"
 540          *              vif[2] - "P2P dev"/"P2P GO"/"P2P Client"
 541          * Otherwise, All the interface are initialized to p2p dev.
 542          */
 543
 544         if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
 545                      ar->fw_capabilities)) {
 546                 for (i = 0; i < ar->vif_max; i++)
 547                         fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
 548                                 (i * HI_OPTION_FW_SUBMODE_BITS);
 549         } else {
 550                 for (i = 0; i < ar->max_norm_iface; i++)
 551                         fw_submode |= HI_OPTION_FW_SUBMODE_NONE <<
 552                                 (i * HI_OPTION_FW_SUBMODE_BITS);
 553
 554                 for (i = ar->max_norm_iface; i < ar->vif_max; i++)
 555                         fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
 556                                 (i * HI_OPTION_FW_SUBMODE_BITS);
 557
 558                 if (ar->p2p && ar->vif_max == 1)
 559                         fw_submode = HI_OPTION_FW_SUBMODE_P2PDEV;
 560         }
 561
 562         if (ath6kl_bmi_write_hi32(ar, hi_app_host_interest,
 563                                   HTC_PROTOCOL_VERSION) != 0) {
 564                 ath6kl_err("bmi_write_memory for htc version failed\n");
 565                 return -EIO;
 566         }
 567
 568         /* set the firmware mode to STA/IBSS/AP */
 569         param = 0;
 570
 571         if (ath6kl_bmi_read_hi32(ar, hi_option_flag, &param) != 0) {
 572                 ath6kl_err("bmi_read_memory for setting fwmode failed\n");
 573                 return -EIO;
 574         }
 575
 576         param |= (ar->vif_max << HI_OPTION_NUM_DEV_SHIFT);
 577         param |= fw_mode << HI_OPTION_FW_MODE_SHIFT;
 578         param |= fw_submode << HI_OPTION_FW_SUBMODE_SHIFT;
 579
 580         param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
 581         param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
 582
 583         if (ath6kl_bmi_write_hi32(ar, hi_option_flag, param) != 0) {
 584                 ath6kl_err("bmi_write_memory for setting fwmode failed\n");
 585                 return -EIO;
 586         }
 587
 588         ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n");
 589
 590         /*
 591          * Hardcode the address use for the extended board data
 592          * Ideally this should be pre-allocate by the OS at boot time
 593          * But since it is a new feature and board data is loaded
 594          * at init time, we have to workaround this from host.
 595          * It is difficult to patch the firmware boot code,
 596          * but possible in theory.
 597          */
 598
 599         if (ar->target_type == TARGET_TYPE_AR6003) {
 600                 param = ar->hw.board_ext_data_addr;
 601                 ram_reserved_size = ar->hw.reserved_ram_size;
 602
 603                 if (ath6kl_bmi_write_hi32(ar, hi_board_ext_data, param) != 0) {
 604                         ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n");
 605                         return -EIO;
 606                 }
 607
 608                 if (ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz,
 609                                           ram_reserved_size) != 0) {
 610                         ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n");
 611                         return -EIO;
 612                 }
 613         }
 614
 615         /* set the block size for the target */
 616         if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0))
 617                 /* use default number of control buffers */
 618                 return -EIO;
 619
 620         /* Configure GPIO AR600x UART */
 621         status = ath6kl_bmi_write_hi32(ar, hi_dbg_uart_txpin,
 622                                        ar->hw.uarttx_pin);
 623         if (status)
 624                 return status;
 625
 626         /* Configure target refclk_hz */
 627         status = ath6kl_bmi_write_hi32(ar, hi_refclk_hz, ar->hw.refclk_hz);
 628         if (status)
 629                 return status;
 630
 631         return 0;
 632 }
 633
 634 /* firmware upload */
 635 static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
 636                          u8 **fw, size_t *fw_len)
 637 {
 638         const struct firmware *fw_entry;
 639         int ret;
 640
 641         ret = request_firmware(&fw_entry, filename, ar->dev);
 642         if (ret)
 643                 return ret;
 644
 645         *fw_len = fw_entry->size;
 646         *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
 647
 648         if (*fw == NULL)
 649                 ret = -ENOMEM;
 650
 651         release_firmware(fw_entry);
 652
 653         return ret;
 654 }
 655
 656 #ifdef CONFIG_OF
 657 /*
 658  * Check the device tree for a board-id and use it to construct
 659  * the pathname to the firmware file.  Used (for now) to find a
 660  * fallback to the "bdata.bin" file--typically a symlink to the
 661  * appropriate board-specific file.
 662  */
 663 static bool check_device_tree(struct ath6kl *ar)
 664 {
 665         static const char *board_id_prop = "atheros,board-id";
 666         struct device_node *node;
 667         char board_filename[64];
 668         const char *board_id;
 669         int ret;
 670
 671         for_each_compatible_node(node, NULL, "atheros,ath6kl") {
 672                 board_id = of_get_property(node, board_id_prop, NULL);
 673                 if (board_id == NULL) {
 674                         ath6kl_warn("No \"%s\" property on %s node.\n",
 675                                     board_id_prop, node->name);
 676                         continue;
 677                 }
 678                 snprintf(board_filename, sizeof(board_filename),
 679                          "%s/bdata.%s.bin", ar->hw.fw.dir, board_id);
 680
 681                 ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board,
 682                                     &ar->fw_board_len);
 683                 if (ret) {
 684                         ath6kl_err("Failed to get DT board file %s: %d\n",
 685                                    board_filename, ret);
 686                         continue;
 687                 }
 688                 return true;
 689         }
 690         return false;
 691 }
 692 #else
 693 static bool check_device_tree(struct ath6kl *ar)
 694 {
 695         return false;
 696 }
 697 #endif /* CONFIG_OF */
 698
 699 static int ath6kl_fetch_board_file(struct ath6kl *ar)
 700 {
 701         const char *filename;
 702         int ret;
 703
 704         if (ar->fw_board != NULL)
 705                 return 0;
 706
 707         if (WARN_ON(ar->hw.fw_board == NULL))
 708                 return -EINVAL;
 709
 710         filename = ar->hw.fw_board;
 711
 712         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 713                             &ar->fw_board_len);
 714         if (ret == 0) {
 715                 /* managed to get proper board file */
 716                 return 0;
 717         }
 718
 719         if (check_device_tree(ar)) {
 720                 /* got board file from device tree */
 721                 return 0;
 722         }
 723
 724         /* there was no proper board file, try to use default instead */
 725         ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
 726                     filename, ret);
 727
 728         filename = ar->hw.fw_default_board;
 729
 730         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 731                             &ar->fw_board_len);
 732         if (ret) {
 733                 ath6kl_err("Failed to get default board file %s: %d\n",
 734                            filename, ret);
 735                 return ret;
 736         }
 737
 738         ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
 739         ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
 740
 741         return 0;
 742 }
 743
 744 static int ath6kl_fetch_otp_file(struct ath6kl *ar)
 745 {
 746         char filename[100];
 747         int ret;
 748
 749         if (ar->fw_otp != NULL)
 750                 return 0;
 751
 752         if (ar->hw.fw.otp == NULL) {
 753                 ath6kl_dbg(ATH6KL_DBG_BOOT,
 754                            "no OTP file configured for this hw\n");
 755                 return 0;
 756         }
 757
 758         snprintf(filename, sizeof(filename), "%s/%s",
 759                  ar->hw.fw.dir, ar->hw.fw.otp);
 760
 761         ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
 762                             &ar->fw_otp_len);
 763         if (ret) {
 764                 ath6kl_err("Failed to get OTP file %s: %d\n",
 765                            filename, ret);
 766                 return ret;
 767         }
 768
 769         return 0;
 770 }
 771
 772 static int ath6kl_fetch_testmode_file(struct ath6kl *ar)
 773 {
 774         char filename[100];
 775         int ret;
 776
 777         if (ar->testmode == 0)
 778                 return 0;
 779
 780         ath6kl_dbg(ATH6KL_DBG_BOOT, "testmode %d\n", ar->testmode);
 781
 782         if (ar->testmode == 2) {
 783                 if (ar->hw.fw.utf == NULL) {
 784                         ath6kl_warn("testmode 2 not supported\n");
 785                         return -EOPNOTSUPP;
 786                 }
 787
 788                 snprintf(filename, sizeof(filename), "%s/%s",
 789                          ar->hw.fw.dir, ar->hw.fw.utf);
 790         } else {
 791                 if (ar->hw.fw.tcmd == NULL) {
 792                         ath6kl_warn("testmode 1 not supported\n");
 793                         return -EOPNOTSUPP;
 794                 }
 795
 796                 snprintf(filename, sizeof(filename), "%s/%s",
 797                          ar->hw.fw.dir, ar->hw.fw.tcmd);
 798         }
 799
 800         set_bit(TESTMODE, &ar->flag);
 801
 802         ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
 803         if (ret) {
 804                 ath6kl_err("Failed to get testmode %d firmware file %s: %d\n",
 805                            ar->testmode, filename, ret);
 806                 return ret;
 807         }
 808
 809         return 0;
 810 }
 811
 812 static int ath6kl_fetch_fw_file(struct ath6kl *ar)
 813 {
 814         char filename[100];
 815         int ret;
 816
 817         if (ar->fw != NULL)
 818                 return 0;
 819
 820         /* FIXME: remove WARN_ON() as we won't support FW API 1 for long */
 821         if (WARN_ON(ar->hw.fw.fw == NULL))
 822                 return -EINVAL;
 823
 824         snprintf(filename, sizeof(filename), "%s/%s",
 825                  ar->hw.fw.dir, ar->hw.fw.fw);
 826
 827         ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
 828         if (ret) {
 829                 ath6kl_err("Failed to get firmware file %s: %d\n",
 830                            filename, ret);
 831                 return ret;
 832         }
 833
 834         return 0;
 835 }
 836
 837 static int ath6kl_fetch_patch_file(struct ath6kl *ar)
 838 {
 839         char filename[100];
 840         int ret;
 841
 842         if (ar->fw_patch != NULL)
 843                 return 0;
 844
 845         if (ar->hw.fw.patch == NULL)
 846                 return 0;
 847
 848         snprintf(filename, sizeof(filename), "%s/%s",
 849                  ar->hw.fw.dir, ar->hw.fw.patch);
 850
 851         ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
 852                             &ar->fw_patch_len);
 853         if (ret) {
 854                 ath6kl_err("Failed to get patch file %s: %d\n",
 855                            filename, ret);
 856                 return ret;
 857         }
 858
 859         return 0;
 860 }
 861
 862 static int ath6kl_fetch_testscript_file(struct ath6kl *ar)
 863 {
 864         char filename[100];
 865         int ret;
 866
 867         if (ar->testmode != 2)
 868                 return 0;
 869
 870         if (ar->fw_testscript != NULL)
 871                 return 0;
 872
 873         if (ar->hw.fw.testscript == NULL)
 874                 return 0;
 875
 876         snprintf(filename, sizeof(filename), "%s/%s",
 877                  ar->hw.fw.dir, ar->hw.fw.testscript);
 878
 879         ret = ath6kl_get_fw(ar, filename, &ar->fw_testscript,
 880                                 &ar->fw_testscript_len);
 881         if (ret) {
 882                 ath6kl_err("Failed to get testscript file %s: %d\n",
 883                            filename, ret);
 884                 return ret;
 885         }
 886
 887         return 0;
 888 }
 889
 890 static int ath6kl_fetch_fw_api1(struct ath6kl *ar)
 891 {
 892         int ret;
 893
 894         ret = ath6kl_fetch_otp_file(ar);
 895         if (ret)
 896                 return ret;
 897
 898         ret = ath6kl_fetch_fw_file(ar);
 899         if (ret)
 900                 return ret;
 901
 902         ret = ath6kl_fetch_patch_file(ar);
 903         if (ret)
 904                 return ret;
 905
 906         ret = ath6kl_fetch_testscript_file(ar);
 907         if (ret)
 908                 return ret;
 909
 910         return 0;
 911 }
 912
 913 static int ath6kl_fetch_fw_apin(struct ath6kl *ar, const char *name)
 914 {
 915         size_t magic_len, len, ie_len;
 916         const struct firmware *fw;
 917         struct ath6kl_fw_ie *hdr;
 918         char filename[100];
 919         const u8 *data;
 920         int ret, ie_id, i, index, bit;
 921         __le32 *val;
 922
 923         snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, name);
 924
 925         ret = request_firmware(&fw, filename, ar->dev);
 926         if (ret)
 927                 return ret;
 928
 929         data = fw->data;
 930         len = fw->size;
 931
 932         /* magic also includes the null byte, check that as well */
 933         magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1;
 934
 935         if (len < magic_len) {
 936                 ret = -EINVAL;
 937                 goto out;
 938         }
 939
 940         if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) {
 941                 ret = -EINVAL;
 942                 goto out;
 943         }
 944
 945         len -= magic_len;
 946         data += magic_len;
 947
 948         /* loop elements */
 949         while (len > sizeof(struct ath6kl_fw_ie)) {
 950                 /* hdr is unaligned! */
 951                 hdr = (struct ath6kl_fw_ie *) data;
 952
 953                 ie_id = le32_to_cpup(&hdr->id);
 954                 ie_len = le32_to_cpup(&hdr->len);
 955
 956                 len -= sizeof(*hdr);
 957                 data += sizeof(*hdr);
 958
 959                 if (len < ie_len) {
 960                         ret = -EINVAL;
 961                         goto out;
 962                 }
 963
 964                 switch (ie_id) {
 965                 case ATH6KL_FW_IE_FW_VERSION:
 966                         strlcpy(ar->wiphy->fw_version, data,
 967                                 sizeof(ar->wiphy->fw_version));
 968
 969                         ath6kl_dbg(ATH6KL_DBG_BOOT,
 970                                    "found fw version %s\n",
 971                                     ar->wiphy->fw_version);
 972                         break;
 973                 case ATH6KL_FW_IE_OTP_IMAGE:
 974                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n",
 975                                    ie_len);
 976
 977                         ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL);
 978
 979                         if (ar->fw_otp == NULL) {
 980                                 ret = -ENOMEM;
 981                                 goto out;
 982                         }
 983
 984                         ar->fw_otp_len = ie_len;
 985                         break;
 986                 case ATH6KL_FW_IE_FW_IMAGE:
 987                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n",
 988                                    ie_len);
 989
 990                         /* in testmode we already might have a fw file */
 991                         if (ar->fw != NULL)
 992                                 break;
 993
 994                         ar->fw = vmalloc(ie_len);
 995
 996                         if (ar->fw == NULL) {
 997                                 ret = -ENOMEM;
 998                                 goto out;
 999                         }
1000
1001                         memcpy(ar->fw, data, ie_len);
1002                         ar->fw_len = ie_len;
1003                         break;
1004                 case ATH6KL_FW_IE_PATCH_IMAGE:
1005                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n",
1006                                    ie_len);
1007
1008                         ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL);
1009
1010                         if (ar->fw_patch == NULL) {
1011                                 ret = -ENOMEM;
1012                                 goto out;
1013                         }
1014
1015                         ar->fw_patch_len = ie_len;
1016                         break;
1017                 case ATH6KL_FW_IE_RESERVED_RAM_SIZE:
1018                         val = (__le32 *) data;
1019                         ar->hw.reserved_ram_size = le32_to_cpup(val);
1020
1021                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1022                                    "found reserved ram size ie 0x%d\n",
1023                                    ar->hw.reserved_ram_size);
1024                         break;
1025                 case ATH6KL_FW_IE_CAPABILITIES:
1026                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1027                                    "found firmware capabilities ie (%zd B)\n",
1028                                    ie_len);
1029
1030                         for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1031                                 index = i / 8;
1032                                 bit = i % 8;
1033
1034                                 if (index == ie_len)
1035                                         break;
1036
1037                                 if (data[index] & (1 << bit))
1038                                         __set_bit(i, ar->fw_capabilities);
1039                         }
1040
1041                         ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "",
1042                                         ar->fw_capabilities,
1043                                         sizeof(ar->fw_capabilities));
1044                         break;
1045                 case ATH6KL_FW_IE_PATCH_ADDR:
1046                         if (ie_len != sizeof(*val))
1047                                 break;
1048
1049                         val = (__le32 *) data;
1050                         ar->hw.dataset_patch_addr = le32_to_cpup(val);
1051
1052                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1053                                    "found patch address ie 0x%x\n",
1054                                    ar->hw.dataset_patch_addr);
1055                         break;
1056                 case ATH6KL_FW_IE_BOARD_ADDR:
1057                         if (ie_len != sizeof(*val))
1058                                 break;
1059
1060                         val = (__le32 *) data;
1061                         ar->hw.board_addr = le32_to_cpup(val);
1062
1063                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1064                                    "found board address ie 0x%x\n",
1065                                    ar->hw.board_addr);
1066                         break;
1067                 case ATH6KL_FW_IE_VIF_MAX:
1068                         if (ie_len != sizeof(*val))
1069                                 break;
1070
1071                         val = (__le32 *) data;
1072                         ar->vif_max = min_t(unsigned int, le32_to_cpup(val),
1073                                             ATH6KL_VIF_MAX);
1074
1075                         if (ar->vif_max > 1 && !ar->p2p)
1076                                 ar->max_norm_iface = 2;
1077
1078                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1079                                    "found vif max ie %d\n", ar->vif_max);
1080                         break;
1081                 default:
1082                         ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n",
1083                                    le32_to_cpup(&hdr->id));
1084                         break;
1085                 }
1086
1087                 len -= ie_len;
1088                 data += ie_len;
1089         };
1090
1091         ret = 0;
1092 out:
1093         release_firmware(fw);
1094
1095         return ret;
1096 }
1097
1098 int ath6kl_init_fetch_firmwares(struct ath6kl *ar)
1099 {
1100         int ret;
1101
1102         ret = ath6kl_fetch_board_file(ar);
1103         if (ret)
1104                 return ret;
1105
1106         ret = ath6kl_fetch_testmode_file(ar);
1107         if (ret)
1108                 return ret;
1109
1110         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API4_FILE);
1111         if (ret == 0) {
1112                 ar->fw_api = 4;
1113                 goto out;
1114         }
1115
1116         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API3_FILE);
1117         if (ret == 0) {
1118                 ar->fw_api = 3;
1119                 goto out;
1120         }
1121
1122         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API2_FILE);
1123         if (ret == 0) {
1124                 ar->fw_api = 2;
1125                 goto out;
1126         }
1127
1128         ret = ath6kl_fetch_fw_api1(ar);
1129         if (ret)
1130                 return ret;
1131
1132         ar->fw_api = 1;
1133
1134 out:
1135         ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api %d\n", ar->fw_api);
1136
1137         return 0;
1138 }
1139
1140 static int ath6kl_upload_board_file(struct ath6kl *ar)
1141 {
1142         u32 board_address, board_ext_address, param;
1143         u32 board_data_size, board_ext_data_size;
1144         int ret;
1145
1146         if (WARN_ON(ar->fw_board == NULL))
1147                 return -ENOENT;
1148
1149         /*
1150          * Determine where in Target RAM to write Board Data.
1151          * For AR6004, host determine Target RAM address for
1152          * writing board data.
1153          */
1154         if (ar->hw.board_addr != 0) {
1155                 board_address = ar->hw.board_addr;
1156                 ath6kl_bmi_write_hi32(ar, hi_board_data,
1157                                       board_address);
1158         } else {
1159                 ret = ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address);
1160                 if (ret) {
1161                         ath6kl_err("Failed to get board file target address.\n");
1162                         return ret;
1163                 }
1164         }
1165
1166         /* determine where in target ram to write extended board data */
1167         ret = ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address);
1168         if (ret) {
1169                 ath6kl_err("Failed to get extended board file target address.\n");
1170                 return ret;
1171         }
1172
1173         if (ar->target_type == TARGET_TYPE_AR6003 &&
1174             board_ext_address == 0) {
1175                 ath6kl_err("Failed to get board file target address.\n");
1176                 return -EINVAL;
1177         }
1178
1179         switch (ar->target_type) {
1180         case TARGET_TYPE_AR6003:
1181                 board_data_size = AR6003_BOARD_DATA_SZ;
1182                 board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ;
1183                 if (ar->fw_board_len > (board_data_size + board_ext_data_size))
1184                         board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ_V2;
1185                 break;
1186         case TARGET_TYPE_AR6004:
1187                 board_data_size = AR6004_BOARD_DATA_SZ;
1188                 board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ;
1189                 break;
1190         default:
1191                 WARN_ON(1);
1192                 return -EINVAL;
1193                 break;
1194         }
1195
1196         if (board_ext_address &&
1197             ar->fw_board_len == (board_data_size + board_ext_data_size)) {
1198                 /* write extended board data */
1199                 ath6kl_dbg(ATH6KL_DBG_BOOT,
1200                            "writing extended board data to 0x%x (%d B)\n",
1201                            board_ext_address, board_ext_data_size);
1202
1203                 ret = ath6kl_bmi_write(ar, board_ext_address,
1204                                        ar->fw_board + board_data_size,
1205                                        board_ext_data_size);
1206                 if (ret) {
1207                         ath6kl_err("Failed to write extended board data: %d\n",
1208                                    ret);
1209                         return ret;
1210                 }
1211
1212                 /* record that extended board data is initialized */
1213                 param = (board_ext_data_size << 16) | 1;
1214
1215                 ath6kl_bmi_write_hi32(ar, hi_board_ext_data_config, param);
1216         }
1217
1218         if (ar->fw_board_len < board_data_size) {
1219                 ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
1220                 ret = -EINVAL;
1221                 return ret;
1222         }
1223
1224         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n",
1225                    board_address, board_data_size);
1226
1227         ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
1228                                board_data_size);
1229
1230         if (ret) {
1231                 ath6kl_err("Board file bmi write failed: %d\n", ret);
1232                 return ret;
1233         }
1234
1235         /* record the fact that Board Data IS initialized */
1236         ath6kl_bmi_write_hi32(ar, hi_board_data_initialized, 1);
1237
1238         return ret;
1239 }
1240
1241 static int ath6kl_upload_otp(struct ath6kl *ar)
1242 {
1243         u32 address, param;
1244         bool from_hw = false;
1245         int ret;
1246
1247         if (ar->fw_otp == NULL)
1248                 return 0;
1249
1250         address = ar->hw.app_load_addr;
1251
1252         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address,
1253                    ar->fw_otp_len);
1254
1255         ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
1256                                        ar->fw_otp_len);
1257         if (ret) {
1258                 ath6kl_err("Failed to upload OTP file: %d\n", ret);
1259                 return ret;
1260         }
1261
1262         /* read firmware start address */
1263         ret = ath6kl_bmi_read_hi32(ar, hi_app_start, &address);
1264
1265         if (ret) {
1266                 ath6kl_err("Failed to read hi_app_start: %d\n", ret);
1267                 return ret;
1268         }
1269
1270         if (ar->hw.app_start_override_addr == 0) {
1271                 ar->hw.app_start_override_addr = address;
1272                 from_hw = true;
1273         }
1274
1275         ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n",
1276                    from_hw ? " (from hw)" : "",
1277                    ar->hw.app_start_override_addr);
1278
1279         /* execute the OTP code */
1280         ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n",
1281                    ar->hw.app_start_override_addr);
1282         param = 0;
1283         ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, &param);
1284
1285         return ret;
1286 }
1287
1288 static int ath6kl_upload_firmware(struct ath6kl *ar)
1289 {
1290         u32 address;
1291         int ret;
1292
1293         if (WARN_ON(ar->fw == NULL))
1294                 return 0;
1295
1296         address = ar->hw.app_load_addr;
1297
1298         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n",
1299                    address, ar->fw_len);
1300
1301         ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
1302
1303         if (ret) {
1304                 ath6kl_err("Failed to write firmware: %d\n", ret);
1305                 return ret;
1306         }
1307
1308         /*
1309          * Set starting address for firmware
1310          * Don't need to setup app_start override addr on AR6004
1311          */
1312         if (ar->target_type != TARGET_TYPE_AR6004) {
1313                 address = ar->hw.app_start_override_addr;
1314                 ath6kl_bmi_set_app_start(ar, address);
1315         }
1316         return ret;
1317 }
1318
1319 static int ath6kl_upload_patch(struct ath6kl *ar)
1320 {
1321         u32 address;
1322         int ret;
1323
1324         if (ar->fw_patch == NULL)
1325                 return 0;
1326
1327         address = ar->hw.dataset_patch_addr;
1328
1329         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n",
1330                    address, ar->fw_patch_len);
1331
1332         ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
1333         if (ret) {
1334                 ath6kl_err("Failed to write patch file: %d\n", ret);
1335                 return ret;
1336         }
1337
1338         ath6kl_bmi_write_hi32(ar, hi_dset_list_head, address);
1339
1340         return 0;
1341 }
1342
1343 static int ath6kl_upload_testscript(struct ath6kl *ar)
1344 {
1345         u32 address;
1346         int ret;
1347
1348         if (ar->testmode != 2)
1349                 return 0;
1350
1351         if (ar->fw_testscript == NULL)
1352                 return 0;
1353
1354         address = ar->hw.testscript_addr;
1355
1356         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing testscript to 0x%x (%zd B)\n",
1357                    address, ar->fw_testscript_len);
1358
1359         ret = ath6kl_bmi_write(ar, address, ar->fw_testscript,
1360                 ar->fw_testscript_len);
1361         if (ret) {
1362                 ath6kl_err("Failed to write testscript file: %d\n", ret);
1363                 return ret;
1364         }
1365
1366         ath6kl_bmi_write_hi32(ar, hi_ota_testscript, address);
1367         ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz, 4096);
1368         ath6kl_bmi_write_hi32(ar, hi_test_apps_related, 1);
1369
1370         return 0;
1371 }
1372
1373 static int ath6kl_init_upload(struct ath6kl *ar)
1374 {
1375         u32 param, options, sleep, address;
1376         int status = 0;
1377
1378         if (ar->target_type != TARGET_TYPE_AR6003 &&
1379             ar->target_type != TARGET_TYPE_AR6004)
1380                 return -EINVAL;
1381
1382         /* temporarily disable system sleep */
1383         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1384         status = ath6kl_bmi_reg_read(ar, address, &param);
1385         if (status)
1386                 return status;
1387
1388         options = param;
1389
1390         param |= ATH6KL_OPTION_SLEEP_DISABLE;
1391         status = ath6kl_bmi_reg_write(ar, address, param);
1392         if (status)
1393                 return status;
1394
1395         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1396         status = ath6kl_bmi_reg_read(ar, address, &param);
1397         if (status)
1398                 return status;
1399
1400         sleep = param;
1401
1402         param |= SM(SYSTEM_SLEEP_DISABLE, 1);
1403         status = ath6kl_bmi_reg_write(ar, address, param);
1404         if (status)
1405                 return status;
1406
1407         ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
1408                    options, sleep);
1409
1410         /* program analog PLL register */
1411         /* no need to control 40/44MHz clock on AR6004 */
1412         if (ar->target_type != TARGET_TYPE_AR6004) {
1413                 status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
1414                                               0xF9104001);
1415
1416                 if (status)
1417                         return status;
1418
1419                 /* Run at 80/88MHz by default */
1420                 param = SM(CPU_CLOCK_STANDARD, 1);
1421
1422                 address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
1423                 status = ath6kl_bmi_reg_write(ar, address, param);
1424                 if (status)
1425                         return status;
1426         }
1427
1428         param = 0;
1429         address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
1430         param = SM(LPO_CAL_ENABLE, 1);
1431         status = ath6kl_bmi_reg_write(ar, address, param);
1432         if (status)
1433                 return status;
1434
1435         /* WAR to avoid SDIO CRC err */
1436         if (ar->hw.flags & ATH6KL_HW_SDIO_CRC_ERROR_WAR) {
1437                 ath6kl_err("temporary war to avoid sdio crc error\n");
1438
1439                 param = 0x28;
1440                 address = GPIO_BASE_ADDRESS + GPIO_PIN9_ADDRESS;
1441                 status = ath6kl_bmi_reg_write(ar, address, param);
1442                 if (status)
1443                         return status;
1444
1445                 param = 0x20;
1446
1447                 address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
1448                 status = ath6kl_bmi_reg_write(ar, address, param);
1449                 if (status)
1450                         return status;
1451
1452                 address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
1453                 status = ath6kl_bmi_reg_write(ar, address, param);
1454                 if (status)
1455                         return status;
1456
1457                 address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
1458                 status = ath6kl_bmi_reg_write(ar, address, param);
1459                 if (status)
1460                         return status;
1461
1462                 address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
1463                 status = ath6kl_bmi_reg_write(ar, address, param);
1464                 if (status)
1465                         return status;
1466         }
1467
1468         /* write EEPROM data to Target RAM */
1469         status = ath6kl_upload_board_file(ar);
1470         if (status)
1471                 return status;
1472
1473         /* transfer One time Programmable data */
1474         status = ath6kl_upload_otp(ar);
1475         if (status)
1476                 return status;
1477
1478         /* Download Target firmware */
1479         status = ath6kl_upload_firmware(ar);
1480         if (status)
1481                 return status;
1482
1483         status = ath6kl_upload_patch(ar);
1484         if (status)
1485                 return status;
1486
1487         /* Download the test script */
1488         status = ath6kl_upload_testscript(ar);
1489         if (status)
1490                 return status;
1491
1492         /* Restore system sleep */
1493         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1494         status = ath6kl_bmi_reg_write(ar, address, sleep);
1495         if (status)
1496                 return status;
1497
1498         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1499         param = options | 0x20;
1500         status = ath6kl_bmi_reg_write(ar, address, param);
1501         if (status)
1502                 return status;
1503
1504         return status;
1505 }
1506
1507 int ath6kl_init_hw_params(struct ath6kl *ar)
1508 {
1509         const struct ath6kl_hw *uninitialized_var(hw);
1510         int i;
1511
1512         for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
1513                 hw = &hw_list[i];
1514
1515                 if (hw->id == ar->version.target_ver)
1516                         break;
1517         }
1518
1519         if (i == ARRAY_SIZE(hw_list)) {
1520                 ath6kl_err("Unsupported hardware version: 0x%x\n",
1521                            ar->version.target_ver);
1522                 return -EINVAL;
1523         }
1524
1525         ar->hw = *hw;
1526
1527         ath6kl_dbg(ATH6KL_DBG_BOOT,
1528                    "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n",
1529                    ar->version.target_ver, ar->target_type,
1530                    ar->hw.dataset_patch_addr, ar->hw.app_load_addr);
1531         ath6kl_dbg(ATH6KL_DBG_BOOT,
1532                    "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x",
1533                    ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr,
1534                    ar->hw.reserved_ram_size);
1535         ath6kl_dbg(ATH6KL_DBG_BOOT,
1536                    "refclk_hz %d uarttx_pin %d",
1537                    ar->hw.refclk_hz, ar->hw.uarttx_pin);
1538
1539         return 0;
1540 }
1541
1542 static const char *ath6kl_init_get_hif_name(enum ath6kl_hif_type type)
1543 {
1544         switch (type) {
1545         case ATH6KL_HIF_TYPE_SDIO:
1546                 return "sdio";
1547         case ATH6KL_HIF_TYPE_USB:
1548                 return "usb";
1549         }
1550
1551         return NULL;
1552 }
1553
1554
1555 static const struct fw_capa_str_map {
1556         int id;
1557         const char *name;
1558 } fw_capa_map[] = {
1559         { ATH6KL_FW_CAPABILITY_HOST_P2P, "host-p2p" },
1560         { ATH6KL_FW_CAPABILITY_SCHED_SCAN, "sched-scan" },
1561         { ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, "sta-p2pdev-duplex" },
1562         { ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, "inactivity-timeout" },
1563         { ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, "rsn-cap-override" },
1564         { ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, "wow-mc-filter" },
1565         { ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, "bmiss-enhance" },
1566         { ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, "sscan-match-list" },
1567         { ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, "rssi-scan-thold" },
1568         { ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, "custom-mac-addr" },
1569         { ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, "tx-err-notify" },
1570         { ATH6KL_FW_CAPABILITY_REGDOMAIN, "regdomain" },
1571         { ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, "sched-scan-v2" },
1572         { ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL, "hb-poll" },
1573         { ATH6KL_FW_CAPABILITY_64BIT_RATES, "64bit-rates" },
1574         { ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS, "ap-inactivity-mins" },
1575         { ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, "map-lp-endpoint" },
1576 };
1577
1578 static const char *ath6kl_init_get_fw_capa_name(unsigned int id)
1579 {
1580         int i;
1581
1582         for (i = 0; i < ARRAY_SIZE(fw_capa_map); i++) {
1583                 if (fw_capa_map[i].id == id)
1584                         return fw_capa_map[i].name;
1585         }
1586
1587         return "<unknown>";
1588 }
1589
1590 static void ath6kl_init_get_fwcaps(struct ath6kl *ar, char *buf, size_t buf_len)
1591 {
1592         u8 *data = (u8 *) ar->fw_capabilities;
1593         size_t trunc_len, len = 0;
1594         int i, index, bit;
1595         char *trunc = "...";
1596
1597         for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1598                 index = i / 8;
1599                 bit = i % 8;
1600
1601                 if (index >= sizeof(ar->fw_capabilities) * 4)
1602                         break;
1603
1604                 if (buf_len - len < 4) {
1605                         ath6kl_warn("firmware capability buffer too small!\n");
1606
1607                         /* add "..." to the end of string */
1608                         trunc_len = strlen(trunc) + 1;
1609                         strncpy(buf + buf_len - trunc_len, trunc, trunc_len);
1610
1611                         return;
1612                 }
1613
1614                 if (data[index] & (1 << bit)) {
1615                         len += scnprintf(buf + len, buf_len - len, "%s,",
1616                                             ath6kl_init_get_fw_capa_name(i));
1617                 }
1618         }
1619
1620         /* overwrite the last comma */
1621         if (len > 0)
1622                 len--;
1623
1624         buf[len] = '\0';
1625 }
1626
1627 static int ath6kl_init_hw_reset(struct ath6kl *ar)
1628 {
1629         ath6kl_dbg(ATH6KL_DBG_BOOT, "cold resetting the device");
1630
1631         return ath6kl_diag_write32(ar, RESET_CONTROL_ADDRESS,
1632                                    cpu_to_le32(RESET_CONTROL_COLD_RST));
1633 }
1634
1635 static int __ath6kl_init_hw_start(struct ath6kl *ar)
1636 {
1637         long timeleft;
1638         int ret, i;
1639         char buf[200];
1640
1641         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw start\n");
1642
1643         ret = ath6kl_hif_power_on(ar);
1644         if (ret)
1645                 return ret;
1646
1647         ret = ath6kl_configure_target(ar);
1648         if (ret)
1649                 goto err_power_off;
1650
1651         ret = ath6kl_init_upload(ar);
1652         if (ret)
1653                 goto err_power_off;
1654
1655         /* Do we need to finish the BMI phase */
1656         ret = ath6kl_bmi_done(ar);
1657         if (ret)
1658                 goto err_power_off;
1659
1660         /*
1661          * The reason we have to wait for the target here is that the
1662          * driver layer has to init BMI in order to set the host block
1663          * size.
1664          */
1665         ret = ath6kl_htc_wait_target(ar->htc_target);
1666
1667         if (ret == -ETIMEDOUT) {
1668                 /*
1669                  * Most likely USB target is in odd state after reboot and
1670                  * needs a reset. A cold reset makes the whole device
1671                  * disappear from USB bus and initialisation starts from
1672                  * beginning.
1673                  */
1674                 ath6kl_warn("htc wait target timed out, resetting device\n");
1675                 ath6kl_init_hw_reset(ar);
1676                 goto err_power_off;
1677         } else if (ret) {
1678                 ath6kl_err("htc wait target failed: %d\n", ret);
1679                 goto err_power_off;
1680         }
1681
1682         ret = ath6kl_init_service_ep(ar);
1683         if (ret) {
1684                 ath6kl_err("Endpoint service initilisation failed: %d\n", ret);
1685                 goto err_cleanup_scatter;
1686         }
1687
1688         /* setup credit distribution */
1689         ath6kl_htc_credit_setup(ar->htc_target, &ar->credit_state_info);
1690
1691         /* start HTC */
1692         ret = ath6kl_htc_start(ar->htc_target);
1693         if (ret) {
1694                 /* FIXME: call this */
1695                 ath6kl_cookie_cleanup(ar);
1696                 goto err_cleanup_scatter;
1697         }
1698
1699         /* Wait for Wmi event to be ready */
1700         timeleft = wait_event_interruptible_timeout(ar->event_wq,
1701                                                     test_bit(WMI_READY,
1702                                                              &ar->flag),
1703                                                     WMI_TIMEOUT);
1704         if (timeleft <= 0) {
1705                 clear_bit(WMI_READY, &ar->flag);
1706                 ath6kl_err("wmi is not ready or wait was interrupted: %ld\n",
1707                            timeleft);
1708                 ret = -EIO;
1709                 goto err_htc_stop;
1710         }
1711
1712         ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n");
1713
1714         if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) {
1715                 ath6kl_info("%s %s fw %s api %d%s\n",
1716                             ar->hw.name,
1717                             ath6kl_init_get_hif_name(ar->hif_type),
1718                             ar->wiphy->fw_version,
1719                             ar->fw_api,
1720                             test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
1721                 ath6kl_init_get_fwcaps(ar, buf, sizeof(buf));
1722                 ath6kl_info("firmware supports: %s\n", buf);
1723         }
1724
1725         if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
1726                 ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n",
1727                            ATH6KL_ABI_VERSION, ar->version.abi_ver);
1728                 ret = -EIO;
1729                 goto err_htc_stop;
1730         }
1731
1732         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
1733
1734         /* communicate the wmi protocol verision to the target */
1735         /* FIXME: return error */
1736         if ((ath6kl_set_host_app_area(ar)) != 0)
1737                 ath6kl_err("unable to set the host app area\n");
1738
1739         for (i = 0; i < ar->vif_max; i++) {
1740                 ret = ath6kl_target_config_wlan_params(ar, i);
1741                 if (ret)
1742                         goto err_htc_stop;
1743         }
1744
1745         return 0;
1746
1747 err_htc_stop:
1748         ath6kl_htc_stop(ar->htc_target);
1749 err_cleanup_scatter:
1750         ath6kl_hif_cleanup_scatter(ar);
1751 err_power_off:
1752         ath6kl_hif_power_off(ar);
1753
1754         return ret;
1755 }
1756
1757 int ath6kl_init_hw_start(struct ath6kl *ar)
1758 {
1759         int err;
1760
1761         err = __ath6kl_init_hw_start(ar);
1762         if (err)
1763                 return err;
1764         ar->state = ATH6KL_STATE_ON;
1765         return 0;
1766 }
1767
1768 static int __ath6kl_init_hw_stop(struct ath6kl *ar)
1769 {
1770         int ret;
1771
1772         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw stop\n");
1773
1774         ath6kl_htc_stop(ar->htc_target);
1775
1776         ath6kl_hif_stop(ar);
1777
1778         ath6kl_bmi_reset(ar);
1779
1780         ret = ath6kl_hif_power_off(ar);
1781         if (ret)
1782                 ath6kl_warn("failed to power off hif: %d\n", ret);
1783
1784         return 0;
1785 }
1786
1787 int ath6kl_init_hw_stop(struct ath6kl *ar)
1788 {
1789         int err;
1790
1791         err = __ath6kl_init_hw_stop(ar);
1792         if (err)
1793                 return err;
1794         ar->state = ATH6KL_STATE_OFF;
1795         return 0;
1796 }
1797
1798 void ath6kl_init_hw_restart(struct ath6kl *ar)
1799 {
1800         clear_bit(WMI_READY, &ar->flag);
1801
1802         ath6kl_cfg80211_stop_all(ar);
1803
1804         if (__ath6kl_init_hw_stop(ar)) {
1805                 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to stop during fw error recovery\n");
1806                 return;
1807         }
1808
1809         if (__ath6kl_init_hw_start(ar)) {
1810                 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n");
1811                 return;
1812         }
1813 }
1814
1815 void ath6kl_stop_txrx(struct ath6kl *ar)
1816 {
1817         struct ath6kl_vif *vif, *tmp_vif;
1818         int i;
1819
1820         set_bit(DESTROY_IN_PROGRESS, &ar->flag);
1821
1822         if (down_interruptible(&ar->sem)) {
1823                 ath6kl_err("down_interruptible failed\n");
1824                 return;
1825         }
1826
1827         for (i = 0; i < AP_MAX_NUM_STA; i++)
1828                 aggr_reset_state(ar->sta_list[i].aggr_conn);
1829
1830         spin_lock_bh(&ar->list_lock);
1831         list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) {
1832                 list_del(&vif->list);
1833                 spin_unlock_bh(&ar->list_lock);
1834                 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1835                 rtnl_lock();
1836                 ath6kl_cfg80211_vif_cleanup(vif);
1837                 rtnl_unlock();
1838                 spin_lock_bh(&ar->list_lock);
1839         }
1840         spin_unlock_bh(&ar->list_lock);
1841
1842         clear_bit(WMI_READY, &ar->flag);
1843
1844         if (ar->fw_recovery.enable)
1845                 del_timer_sync(&ar->fw_recovery.hb_timer);
1846
1847         /*
1848          * After wmi_shudown all WMI events will be dropped. We
1849          * need to cleanup the buffers allocated in AP mode and
1850          * give disconnect notification to stack, which usually
1851          * happens in the disconnect_event. Simulate the disconnect
1852          * event by calling the function directly. Sometimes
1853          * disconnect_event will be received when the debug logs
1854          * are collected.
1855          */
1856         ath6kl_wmi_shutdown(ar->wmi);
1857
1858         clear_bit(WMI_ENABLED, &ar->flag);
1859         if (ar->htc_target) {
1860                 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
1861                 ath6kl_htc_stop(ar->htc_target);
1862         }
1863
1864         /*
1865          * Try to reset the device if we can. The driver may have been
1866          * configure NOT to reset the target during a debug session.
1867          */
1868         ath6kl_init_hw_reset(ar);
1869
1870         up(&ar->sem);
1871 }
1872 EXPORT_SYMBOL(ath6kl_stop_txrx);