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         if (ar->hw.refclk_hz != 0) {
 628                 status = ath6kl_bmi_write_hi32(ar, hi_refclk_hz,
 629                                                ar->hw.refclk_hz);
 630                 if (status)
 631                         return status;
 632         }
 633
 634         return 0;
 635 }
 636
 637 /* firmware upload */
 638 static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
 639                          u8 **fw, size_t *fw_len)
 640 {
 641         const struct firmware *fw_entry;
 642         int ret;
 643
 644         ret = request_firmware(&fw_entry, filename, ar->dev);
 645         if (ret)
 646                 return ret;
 647
 648         *fw_len = fw_entry->size;
 649         *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
 650
 651         if (*fw == NULL)
 652                 ret = -ENOMEM;
 653
 654         release_firmware(fw_entry);
 655
 656         return ret;
 657 }
 658
 659 #ifdef CONFIG_OF
 660 /*
 661  * Check the device tree for a board-id and use it to construct
 662  * the pathname to the firmware file.  Used (for now) to find a
 663  * fallback to the "bdata.bin" file--typically a symlink to the
 664  * appropriate board-specific file.
 665  */
 666 static bool check_device_tree(struct ath6kl *ar)
 667 {
 668         static const char *board_id_prop = "atheros,board-id";
 669         struct device_node *node;
 670         char board_filename[64];
 671         const char *board_id;
 672         int ret;
 673
 674         for_each_compatible_node(node, NULL, "atheros,ath6kl") {
 675                 board_id = of_get_property(node, board_id_prop, NULL);
 676                 if (board_id == NULL) {
 677                         ath6kl_warn("No \"%s\" property on %s node.\n",
 678                                     board_id_prop, node->name);
 679                         continue;
 680                 }
 681                 snprintf(board_filename, sizeof(board_filename),
 682                          "%s/bdata.%s.bin", ar->hw.fw.dir, board_id);
 683
 684                 ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board,
 685                                     &ar->fw_board_len);
 686                 if (ret) {
 687                         ath6kl_err("Failed to get DT board file %s: %d\n",
 688                                    board_filename, ret);
 689                         continue;
 690                 }
 691                 return true;
 692         }
 693         return false;
 694 }
 695 #else
 696 static bool check_device_tree(struct ath6kl *ar)
 697 {
 698         return false;
 699 }
 700 #endif /* CONFIG_OF */
 701
 702 static int ath6kl_fetch_board_file(struct ath6kl *ar)
 703 {
 704         const char *filename;
 705         int ret;
 706
 707         if (ar->fw_board != NULL)
 708                 return 0;
 709
 710         if (WARN_ON(ar->hw.fw_board == NULL))
 711                 return -EINVAL;
 712
 713         filename = ar->hw.fw_board;
 714
 715         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 716                             &ar->fw_board_len);
 717         if (ret == 0) {
 718                 /* managed to get proper board file */
 719                 return 0;
 720         }
 721
 722         if (check_device_tree(ar)) {
 723                 /* got board file from device tree */
 724                 return 0;
 725         }
 726
 727         /* there was no proper board file, try to use default instead */
 728         ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
 729                     filename, ret);
 730
 731         filename = ar->hw.fw_default_board;
 732
 733         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 734                             &ar->fw_board_len);
 735         if (ret) {
 736                 ath6kl_err("Failed to get default board file %s: %d\n",
 737                            filename, ret);
 738                 return ret;
 739         }
 740
 741         ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
 742         ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
 743
 744         return 0;
 745 }
 746
 747 static int ath6kl_fetch_otp_file(struct ath6kl *ar)
 748 {
 749         char filename[100];
 750         int ret;
 751
 752         if (ar->fw_otp != NULL)
 753                 return 0;
 754
 755         if (ar->hw.fw.otp == NULL) {
 756                 ath6kl_dbg(ATH6KL_DBG_BOOT,
 757                            "no OTP file configured for this hw\n");
 758                 return 0;
 759         }
 760
 761         snprintf(filename, sizeof(filename), "%s/%s",
 762                  ar->hw.fw.dir, ar->hw.fw.otp);
 763
 764         ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
 765                             &ar->fw_otp_len);
 766         if (ret) {
 767                 ath6kl_err("Failed to get OTP file %s: %d\n",
 768                            filename, ret);
 769                 return ret;
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int ath6kl_fetch_testmode_file(struct ath6kl *ar)
 776 {
 777         char filename[100];
 778         int ret;
 779
 780         if (ar->testmode == 0)
 781                 return 0;
 782
 783         ath6kl_dbg(ATH6KL_DBG_BOOT, "testmode %d\n", ar->testmode);
 784
 785         if (ar->testmode == 2) {
 786                 if (ar->hw.fw.utf == NULL) {
 787                         ath6kl_warn("testmode 2 not supported\n");
 788                         return -EOPNOTSUPP;
 789                 }
 790
 791                 snprintf(filename, sizeof(filename), "%s/%s",
 792                          ar->hw.fw.dir, ar->hw.fw.utf);
 793         } else {
 794                 if (ar->hw.fw.tcmd == NULL) {
 795                         ath6kl_warn("testmode 1 not supported\n");
 796                         return -EOPNOTSUPP;
 797                 }
 798
 799                 snprintf(filename, sizeof(filename), "%s/%s",
 800                          ar->hw.fw.dir, ar->hw.fw.tcmd);
 801         }
 802
 803         set_bit(TESTMODE, &ar->flag);
 804
 805         ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
 806         if (ret) {
 807                 ath6kl_err("Failed to get testmode %d firmware file %s: %d\n",
 808                            ar->testmode, filename, ret);
 809                 return ret;
 810         }
 811
 812         return 0;
 813 }
 814
 815 static int ath6kl_fetch_fw_file(struct ath6kl *ar)
 816 {
 817         char filename[100];
 818         int ret;
 819
 820         if (ar->fw != NULL)
 821                 return 0;
 822
 823         /* FIXME: remove WARN_ON() as we won't support FW API 1 for long */
 824         if (WARN_ON(ar->hw.fw.fw == NULL))
 825                 return -EINVAL;
 826
 827         snprintf(filename, sizeof(filename), "%s/%s",
 828                  ar->hw.fw.dir, ar->hw.fw.fw);
 829
 830         ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
 831         if (ret) {
 832                 ath6kl_err("Failed to get firmware file %s: %d\n",
 833                            filename, ret);
 834                 return ret;
 835         }
 836
 837         return 0;
 838 }
 839
 840 static int ath6kl_fetch_patch_file(struct ath6kl *ar)
 841 {
 842         char filename[100];
 843         int ret;
 844
 845         if (ar->fw_patch != NULL)
 846                 return 0;
 847
 848         if (ar->hw.fw.patch == NULL)
 849                 return 0;
 850
 851         snprintf(filename, sizeof(filename), "%s/%s",
 852                  ar->hw.fw.dir, ar->hw.fw.patch);
 853
 854         ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
 855                             &ar->fw_patch_len);
 856         if (ret) {
 857                 ath6kl_err("Failed to get patch file %s: %d\n",
 858                            filename, ret);
 859                 return ret;
 860         }
 861
 862         return 0;
 863 }
 864
 865 static int ath6kl_fetch_testscript_file(struct ath6kl *ar)
 866 {
 867         char filename[100];
 868         int ret;
 869
 870         if (ar->testmode != 2)
 871                 return 0;
 872
 873         if (ar->fw_testscript != NULL)
 874                 return 0;
 875
 876         if (ar->hw.fw.testscript == NULL)
 877                 return 0;
 878
 879         snprintf(filename, sizeof(filename), "%s/%s",
 880                  ar->hw.fw.dir, ar->hw.fw.testscript);
 881
 882         ret = ath6kl_get_fw(ar, filename, &ar->fw_testscript,
 883                                 &ar->fw_testscript_len);
 884         if (ret) {
 885                 ath6kl_err("Failed to get testscript file %s: %d\n",
 886                            filename, ret);
 887                 return ret;
 888         }
 889
 890         return 0;
 891 }
 892
 893 static int ath6kl_fetch_fw_api1(struct ath6kl *ar)
 894 {
 895         int ret;
 896
 897         ret = ath6kl_fetch_otp_file(ar);
 898         if (ret)
 899                 return ret;
 900
 901         ret = ath6kl_fetch_fw_file(ar);
 902         if (ret)
 903                 return ret;
 904
 905         ret = ath6kl_fetch_patch_file(ar);
 906         if (ret)
 907                 return ret;
 908
 909         ret = ath6kl_fetch_testscript_file(ar);
 910         if (ret)
 911                 return ret;
 912
 913         return 0;
 914 }
 915
 916 static int ath6kl_fetch_fw_apin(struct ath6kl *ar, const char *name)
 917 {
 918         size_t magic_len, len, ie_len;
 919         const struct firmware *fw;
 920         struct ath6kl_fw_ie *hdr;
 921         char filename[100];
 922         const u8 *data;
 923         int ret, ie_id, i, index, bit;
 924         __le32 *val;
 925
 926         snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, name);
 927
 928         ret = request_firmware(&fw, filename, ar->dev);
 929         if (ret)
 930                 return ret;
 931
 932         data = fw->data;
 933         len = fw->size;
 934
 935         /* magic also includes the null byte, check that as well */
 936         magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1;
 937
 938         if (len < magic_len) {
 939                 ret = -EINVAL;
 940                 goto out;
 941         }
 942
 943         if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) {
 944                 ret = -EINVAL;
 945                 goto out;
 946         }
 947
 948         len -= magic_len;
 949         data += magic_len;
 950
 951         /* loop elements */
 952         while (len > sizeof(struct ath6kl_fw_ie)) {
 953                 /* hdr is unaligned! */
 954                 hdr = (struct ath6kl_fw_ie *) data;
 955
 956                 ie_id = le32_to_cpup(&hdr->id);
 957                 ie_len = le32_to_cpup(&hdr->len);
 958
 959                 len -= sizeof(*hdr);
 960                 data += sizeof(*hdr);
 961
 962                 if (len < ie_len) {
 963                         ret = -EINVAL;
 964                         goto out;
 965                 }
 966
 967                 switch (ie_id) {
 968                 case ATH6KL_FW_IE_FW_VERSION:
 969                         strlcpy(ar->wiphy->fw_version, data,
 970                                 sizeof(ar->wiphy->fw_version));
 971
 972                         ath6kl_dbg(ATH6KL_DBG_BOOT,
 973                                    "found fw version %s\n",
 974                                     ar->wiphy->fw_version);
 975                         break;
 976                 case ATH6KL_FW_IE_OTP_IMAGE:
 977                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n",
 978                                    ie_len);
 979
 980                         ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL);
 981
 982                         if (ar->fw_otp == NULL) {
 983                                 ret = -ENOMEM;
 984                                 goto out;
 985                         }
 986
 987                         ar->fw_otp_len = ie_len;
 988                         break;
 989                 case ATH6KL_FW_IE_FW_IMAGE:
 990                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n",
 991                                    ie_len);
 992
 993                         /* in testmode we already might have a fw file */
 994                         if (ar->fw != NULL)
 995                                 break;
 996
 997                         ar->fw = vmalloc(ie_len);
 998
 999                         if (ar->fw == NULL) {
1000                                 ret = -ENOMEM;
1001                                 goto out;
1002                         }
1003
1004                         memcpy(ar->fw, data, ie_len);
1005                         ar->fw_len = ie_len;
1006                         break;
1007                 case ATH6KL_FW_IE_PATCH_IMAGE:
1008                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n",
1009                                    ie_len);
1010
1011                         ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL);
1012
1013                         if (ar->fw_patch == NULL) {
1014                                 ret = -ENOMEM;
1015                                 goto out;
1016                         }
1017
1018                         ar->fw_patch_len = ie_len;
1019                         break;
1020                 case ATH6KL_FW_IE_RESERVED_RAM_SIZE:
1021                         val = (__le32 *) data;
1022                         ar->hw.reserved_ram_size = le32_to_cpup(val);
1023
1024                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1025                                    "found reserved ram size ie 0x%d\n",
1026                                    ar->hw.reserved_ram_size);
1027                         break;
1028                 case ATH6KL_FW_IE_CAPABILITIES:
1029                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1030                                    "found firmware capabilities ie (%zd B)\n",
1031                                    ie_len);
1032
1033                         for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1034                                 index = i / 8;
1035                                 bit = i % 8;
1036
1037                                 if (index == ie_len)
1038                                         break;
1039
1040                                 if (data[index] & (1 << bit))
1041                                         __set_bit(i, ar->fw_capabilities);
1042                         }
1043
1044                         ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "",
1045                                         ar->fw_capabilities,
1046                                         sizeof(ar->fw_capabilities));
1047                         break;
1048                 case ATH6KL_FW_IE_PATCH_ADDR:
1049                         if (ie_len != sizeof(*val))
1050                                 break;
1051
1052                         val = (__le32 *) data;
1053                         ar->hw.dataset_patch_addr = le32_to_cpup(val);
1054
1055                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1056                                    "found patch address ie 0x%x\n",
1057                                    ar->hw.dataset_patch_addr);
1058                         break;
1059                 case ATH6KL_FW_IE_BOARD_ADDR:
1060                         if (ie_len != sizeof(*val))
1061                                 break;
1062
1063                         val = (__le32 *) data;
1064                         ar->hw.board_addr = le32_to_cpup(val);
1065
1066                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1067                                    "found board address ie 0x%x\n",
1068                                    ar->hw.board_addr);
1069                         break;
1070                 case ATH6KL_FW_IE_VIF_MAX:
1071                         if (ie_len != sizeof(*val))
1072                                 break;
1073
1074                         val = (__le32 *) data;
1075                         ar->vif_max = min_t(unsigned int, le32_to_cpup(val),
1076                                             ATH6KL_VIF_MAX);
1077
1078                         if (ar->vif_max > 1 && !ar->p2p)
1079                                 ar->max_norm_iface = 2;
1080
1081                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1082                                    "found vif max ie %d\n", ar->vif_max);
1083                         break;
1084                 default:
1085                         ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n",
1086                                    le32_to_cpup(&hdr->id));
1087                         break;
1088                 }
1089
1090                 len -= ie_len;
1091                 data += ie_len;
1092         };
1093
1094         ret = 0;
1095 out:
1096         release_firmware(fw);
1097
1098         return ret;
1099 }
1100
1101 int ath6kl_init_fetch_firmwares(struct ath6kl *ar)
1102 {
1103         int ret;
1104
1105         ret = ath6kl_fetch_board_file(ar);
1106         if (ret)
1107                 return ret;
1108
1109         ret = ath6kl_fetch_testmode_file(ar);
1110         if (ret)
1111                 return ret;
1112
1113         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API4_FILE);
1114         if (ret == 0) {
1115                 ar->fw_api = 4;
1116                 goto out;
1117         }
1118
1119         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API3_FILE);
1120         if (ret == 0) {
1121                 ar->fw_api = 3;
1122                 goto out;
1123         }
1124
1125         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API2_FILE);
1126         if (ret == 0) {
1127                 ar->fw_api = 2;
1128                 goto out;
1129         }
1130
1131         ret = ath6kl_fetch_fw_api1(ar);
1132         if (ret)
1133                 return ret;
1134
1135         ar->fw_api = 1;
1136
1137 out:
1138         ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api %d\n", ar->fw_api);
1139
1140         return 0;
1141 }
1142
1143 static int ath6kl_upload_board_file(struct ath6kl *ar)
1144 {
1145         u32 board_address, board_ext_address, param;
1146         u32 board_data_size, board_ext_data_size;
1147         int ret;
1148
1149         if (WARN_ON(ar->fw_board == NULL))
1150                 return -ENOENT;
1151
1152         /*
1153          * Determine where in Target RAM to write Board Data.
1154          * For AR6004, host determine Target RAM address for
1155          * writing board data.
1156          */
1157         if (ar->hw.board_addr != 0) {
1158                 board_address = ar->hw.board_addr;
1159                 ath6kl_bmi_write_hi32(ar, hi_board_data,
1160                                       board_address);
1161         } else {
1162                 ret = ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address);
1163                 if (ret) {
1164                         ath6kl_err("Failed to get board file target address.\n");
1165                         return ret;
1166                 }
1167         }
1168
1169         /* determine where in target ram to write extended board data */
1170         ret = ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address);
1171         if (ret) {
1172                 ath6kl_err("Failed to get extended board file target address.\n");
1173                 return ret;
1174         }
1175
1176         if (ar->target_type == TARGET_TYPE_AR6003 &&
1177             board_ext_address == 0) {
1178                 ath6kl_err("Failed to get board file target address.\n");
1179                 return -EINVAL;
1180         }
1181
1182         switch (ar->target_type) {
1183         case TARGET_TYPE_AR6003:
1184                 board_data_size = AR6003_BOARD_DATA_SZ;
1185                 board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ;
1186                 if (ar->fw_board_len > (board_data_size + board_ext_data_size))
1187                         board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ_V2;
1188                 break;
1189         case TARGET_TYPE_AR6004:
1190                 board_data_size = AR6004_BOARD_DATA_SZ;
1191                 board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ;
1192                 break;
1193         default:
1194                 WARN_ON(1);
1195                 return -EINVAL;
1196                 break;
1197         }
1198
1199         if (board_ext_address &&
1200             ar->fw_board_len == (board_data_size + board_ext_data_size)) {
1201                 /* write extended board data */
1202                 ath6kl_dbg(ATH6KL_DBG_BOOT,
1203                            "writing extended board data to 0x%x (%d B)\n",
1204                            board_ext_address, board_ext_data_size);
1205
1206                 ret = ath6kl_bmi_write(ar, board_ext_address,
1207                                        ar->fw_board + board_data_size,
1208                                        board_ext_data_size);
1209                 if (ret) {
1210                         ath6kl_err("Failed to write extended board data: %d\n",
1211                                    ret);
1212                         return ret;
1213                 }
1214
1215                 /* record that extended board data is initialized */
1216                 param = (board_ext_data_size << 16) | 1;
1217
1218                 ath6kl_bmi_write_hi32(ar, hi_board_ext_data_config, param);
1219         }
1220
1221         if (ar->fw_board_len < board_data_size) {
1222                 ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
1223                 ret = -EINVAL;
1224                 return ret;
1225         }
1226
1227         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n",
1228                    board_address, board_data_size);
1229
1230         ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
1231                                board_data_size);
1232
1233         if (ret) {
1234                 ath6kl_err("Board file bmi write failed: %d\n", ret);
1235                 return ret;
1236         }
1237
1238         /* record the fact that Board Data IS initialized */
1239         ath6kl_bmi_write_hi32(ar, hi_board_data_initialized, 1);
1240
1241         return ret;
1242 }
1243
1244 static int ath6kl_upload_otp(struct ath6kl *ar)
1245 {
1246         u32 address, param;
1247         bool from_hw = false;
1248         int ret;
1249
1250         if (ar->fw_otp == NULL)
1251                 return 0;
1252
1253         address = ar->hw.app_load_addr;
1254
1255         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address,
1256                    ar->fw_otp_len);
1257
1258         ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
1259                                        ar->fw_otp_len);
1260         if (ret) {
1261                 ath6kl_err("Failed to upload OTP file: %d\n", ret);
1262                 return ret;
1263         }
1264
1265         /* read firmware start address */
1266         ret = ath6kl_bmi_read_hi32(ar, hi_app_start, &address);
1267
1268         if (ret) {
1269                 ath6kl_err("Failed to read hi_app_start: %d\n", ret);
1270                 return ret;
1271         }
1272
1273         if (ar->hw.app_start_override_addr == 0) {
1274                 ar->hw.app_start_override_addr = address;
1275                 from_hw = true;
1276         }
1277
1278         ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n",
1279                    from_hw ? " (from hw)" : "",
1280                    ar->hw.app_start_override_addr);
1281
1282         /* execute the OTP code */
1283         ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n",
1284                    ar->hw.app_start_override_addr);
1285         param = 0;
1286         ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, &param);
1287
1288         return ret;
1289 }
1290
1291 static int ath6kl_upload_firmware(struct ath6kl *ar)
1292 {
1293         u32 address;
1294         int ret;
1295
1296         if (WARN_ON(ar->fw == NULL))
1297                 return 0;
1298
1299         address = ar->hw.app_load_addr;
1300
1301         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n",
1302                    address, ar->fw_len);
1303
1304         ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
1305
1306         if (ret) {
1307                 ath6kl_err("Failed to write firmware: %d\n", ret);
1308                 return ret;
1309         }
1310
1311         /*
1312          * Set starting address for firmware
1313          * Don't need to setup app_start override addr on AR6004
1314          */
1315         if (ar->target_type != TARGET_TYPE_AR6004) {
1316                 address = ar->hw.app_start_override_addr;
1317                 ath6kl_bmi_set_app_start(ar, address);
1318         }
1319         return ret;
1320 }
1321
1322 static int ath6kl_upload_patch(struct ath6kl *ar)
1323 {
1324         u32 address;
1325         int ret;
1326
1327         if (ar->fw_patch == NULL)
1328                 return 0;
1329
1330         address = ar->hw.dataset_patch_addr;
1331
1332         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n",
1333                    address, ar->fw_patch_len);
1334
1335         ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
1336         if (ret) {
1337                 ath6kl_err("Failed to write patch file: %d\n", ret);
1338                 return ret;
1339         }
1340
1341         ath6kl_bmi_write_hi32(ar, hi_dset_list_head, address);
1342
1343         return 0;
1344 }
1345
1346 static int ath6kl_upload_testscript(struct ath6kl *ar)
1347 {
1348         u32 address;
1349         int ret;
1350
1351         if (ar->testmode != 2)
1352                 return 0;
1353
1354         if (ar->fw_testscript == NULL)
1355                 return 0;
1356
1357         address = ar->hw.testscript_addr;
1358
1359         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing testscript to 0x%x (%zd B)\n",
1360                    address, ar->fw_testscript_len);
1361
1362         ret = ath6kl_bmi_write(ar, address, ar->fw_testscript,
1363                 ar->fw_testscript_len);
1364         if (ret) {
1365                 ath6kl_err("Failed to write testscript file: %d\n", ret);
1366                 return ret;
1367         }
1368
1369         ath6kl_bmi_write_hi32(ar, hi_ota_testscript, address);
1370         ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz, 4096);
1371         ath6kl_bmi_write_hi32(ar, hi_test_apps_related, 1);
1372
1373         return 0;
1374 }
1375
1376 static int ath6kl_init_upload(struct ath6kl *ar)
1377 {
1378         u32 param, options, sleep, address;
1379         int status = 0;
1380
1381         if (ar->target_type != TARGET_TYPE_AR6003 &&
1382             ar->target_type != TARGET_TYPE_AR6004)
1383                 return -EINVAL;
1384
1385         /* temporarily disable system sleep */
1386         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1387         status = ath6kl_bmi_reg_read(ar, address, &param);
1388         if (status)
1389                 return status;
1390
1391         options = param;
1392
1393         param |= ATH6KL_OPTION_SLEEP_DISABLE;
1394         status = ath6kl_bmi_reg_write(ar, address, param);
1395         if (status)
1396                 return status;
1397
1398         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1399         status = ath6kl_bmi_reg_read(ar, address, &param);
1400         if (status)
1401                 return status;
1402
1403         sleep = param;
1404
1405         param |= SM(SYSTEM_SLEEP_DISABLE, 1);
1406         status = ath6kl_bmi_reg_write(ar, address, param);
1407         if (status)
1408                 return status;
1409
1410         ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
1411                    options, sleep);
1412
1413         /* program analog PLL register */
1414         /* no need to control 40/44MHz clock on AR6004 */
1415         if (ar->target_type != TARGET_TYPE_AR6004) {
1416                 status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
1417                                               0xF9104001);
1418
1419                 if (status)
1420                         return status;
1421
1422                 /* Run at 80/88MHz by default */
1423                 param = SM(CPU_CLOCK_STANDARD, 1);
1424
1425                 address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
1426                 status = ath6kl_bmi_reg_write(ar, address, param);
1427                 if (status)
1428                         return status;
1429         }
1430
1431         param = 0;
1432         address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
1433         param = SM(LPO_CAL_ENABLE, 1);
1434         status = ath6kl_bmi_reg_write(ar, address, param);
1435         if (status)
1436                 return status;
1437
1438         /* WAR to avoid SDIO CRC err */
1439         if (ar->hw.flags & ATH6KL_HW_SDIO_CRC_ERROR_WAR) {
1440                 ath6kl_err("temporary war to avoid sdio crc error\n");
1441
1442                 param = 0x28;
1443                 address = GPIO_BASE_ADDRESS + GPIO_PIN9_ADDRESS;
1444                 status = ath6kl_bmi_reg_write(ar, address, param);
1445                 if (status)
1446                         return status;
1447
1448                 param = 0x20;
1449
1450                 address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
1451                 status = ath6kl_bmi_reg_write(ar, address, param);
1452                 if (status)
1453                         return status;
1454
1455                 address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
1456                 status = ath6kl_bmi_reg_write(ar, address, param);
1457                 if (status)
1458                         return status;
1459
1460                 address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
1461                 status = ath6kl_bmi_reg_write(ar, address, param);
1462                 if (status)
1463                         return status;
1464
1465                 address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
1466                 status = ath6kl_bmi_reg_write(ar, address, param);
1467                 if (status)
1468                         return status;
1469         }
1470
1471         /* write EEPROM data to Target RAM */
1472         status = ath6kl_upload_board_file(ar);
1473         if (status)
1474                 return status;
1475
1476         /* transfer One time Programmable data */
1477         status = ath6kl_upload_otp(ar);
1478         if (status)
1479                 return status;
1480
1481         /* Download Target firmware */
1482         status = ath6kl_upload_firmware(ar);
1483         if (status)
1484                 return status;
1485
1486         status = ath6kl_upload_patch(ar);
1487         if (status)
1488                 return status;
1489
1490         /* Download the test script */
1491         status = ath6kl_upload_testscript(ar);
1492         if (status)
1493                 return status;
1494
1495         /* Restore system sleep */
1496         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1497         status = ath6kl_bmi_reg_write(ar, address, sleep);
1498         if (status)
1499                 return status;
1500
1501         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1502         param = options | 0x20;
1503         status = ath6kl_bmi_reg_write(ar, address, param);
1504         if (status)
1505                 return status;
1506
1507         return status;
1508 }
1509
1510 int ath6kl_init_hw_params(struct ath6kl *ar)
1511 {
1512         const struct ath6kl_hw *uninitialized_var(hw);
1513         int i;
1514
1515         for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
1516                 hw = &hw_list[i];
1517
1518                 if (hw->id == ar->version.target_ver)
1519                         break;
1520         }
1521
1522         if (i == ARRAY_SIZE(hw_list)) {
1523                 ath6kl_err("Unsupported hardware version: 0x%x\n",
1524                            ar->version.target_ver);
1525                 return -EINVAL;
1526         }
1527
1528         ar->hw = *hw;
1529
1530         ath6kl_dbg(ATH6KL_DBG_BOOT,
1531                    "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n",
1532                    ar->version.target_ver, ar->target_type,
1533                    ar->hw.dataset_patch_addr, ar->hw.app_load_addr);
1534         ath6kl_dbg(ATH6KL_DBG_BOOT,
1535                    "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x",
1536                    ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr,
1537                    ar->hw.reserved_ram_size);
1538         ath6kl_dbg(ATH6KL_DBG_BOOT,
1539                    "refclk_hz %d uarttx_pin %d",
1540                    ar->hw.refclk_hz, ar->hw.uarttx_pin);
1541
1542         return 0;
1543 }
1544
1545 static const char *ath6kl_init_get_hif_name(enum ath6kl_hif_type type)
1546 {
1547         switch (type) {
1548         case ATH6KL_HIF_TYPE_SDIO:
1549                 return "sdio";
1550         case ATH6KL_HIF_TYPE_USB:
1551                 return "usb";
1552         }
1553
1554         return NULL;
1555 }
1556
1557
1558 static const struct fw_capa_str_map {
1559         int id;
1560         const char *name;
1561 } fw_capa_map[] = {
1562         { ATH6KL_FW_CAPABILITY_HOST_P2P, "host-p2p" },
1563         { ATH6KL_FW_CAPABILITY_SCHED_SCAN, "sched-scan" },
1564         { ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, "sta-p2pdev-duplex" },
1565         { ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, "inactivity-timeout" },
1566         { ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, "rsn-cap-override" },
1567         { ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, "wow-mc-filter" },
1568         { ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, "bmiss-enhance" },
1569         { ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, "sscan-match-list" },
1570         { ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, "rssi-scan-thold" },
1571         { ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, "custom-mac-addr" },
1572         { ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, "tx-err-notify" },
1573         { ATH6KL_FW_CAPABILITY_REGDOMAIN, "regdomain" },
1574         { ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, "sched-scan-v2" },
1575         { ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL, "hb-poll" },
1576         { ATH6KL_FW_CAPABILITY_64BIT_RATES, "64bit-rates" },
1577         { ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS, "ap-inactivity-mins" },
1578         { ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, "map-lp-endpoint" },
1579 };
1580
1581 static const char *ath6kl_init_get_fw_capa_name(unsigned int id)
1582 {
1583         int i;
1584
1585         for (i = 0; i < ARRAY_SIZE(fw_capa_map); i++) {
1586                 if (fw_capa_map[i].id == id)
1587                         return fw_capa_map[i].name;
1588         }
1589
1590         return "<unknown>";
1591 }
1592
1593 static void ath6kl_init_get_fwcaps(struct ath6kl *ar, char *buf, size_t buf_len)
1594 {
1595         u8 *data = (u8 *) ar->fw_capabilities;
1596         size_t trunc_len, len = 0;
1597         int i, index, bit;
1598         char *trunc = "...";
1599
1600         for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1601                 index = i / 8;
1602                 bit = i % 8;
1603
1604                 if (index >= sizeof(ar->fw_capabilities) * 4)
1605                         break;
1606
1607                 if (buf_len - len < 4) {
1608                         ath6kl_warn("firmware capability buffer too small!\n");
1609
1610                         /* add "..." to the end of string */
1611                         trunc_len = strlen(trunc) + 1;
1612                         strncpy(buf + buf_len - trunc_len, trunc, trunc_len);
1613
1614                         return;
1615                 }
1616
1617                 if (data[index] & (1 << bit)) {
1618                         len += scnprintf(buf + len, buf_len - len, "%s,",
1619                                             ath6kl_init_get_fw_capa_name(i));
1620                 }
1621         }
1622
1623         /* overwrite the last comma */
1624         if (len > 0)
1625                 len--;
1626
1627         buf[len] = '\0';
1628 }
1629
1630 static int ath6kl_init_hw_reset(struct ath6kl *ar)
1631 {
1632         ath6kl_dbg(ATH6KL_DBG_BOOT, "cold resetting the device");
1633
1634         return ath6kl_diag_write32(ar, RESET_CONTROL_ADDRESS,
1635                                    cpu_to_le32(RESET_CONTROL_COLD_RST));
1636 }
1637
1638 static int __ath6kl_init_hw_start(struct ath6kl *ar)
1639 {
1640         long timeleft;
1641         int ret, i;
1642         char buf[200];
1643
1644         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw start\n");
1645
1646         ret = ath6kl_hif_power_on(ar);
1647         if (ret)
1648                 return ret;
1649
1650         ret = ath6kl_configure_target(ar);
1651         if (ret)
1652                 goto err_power_off;
1653
1654         ret = ath6kl_init_upload(ar);
1655         if (ret)
1656                 goto err_power_off;
1657
1658         /* Do we need to finish the BMI phase */
1659         ret = ath6kl_bmi_done(ar);
1660         if (ret)
1661                 goto err_power_off;
1662
1663         /*
1664          * The reason we have to wait for the target here is that the
1665          * driver layer has to init BMI in order to set the host block
1666          * size.
1667          */
1668         ret = ath6kl_htc_wait_target(ar->htc_target);
1669
1670         if (ret == -ETIMEDOUT) {
1671                 /*
1672                  * Most likely USB target is in odd state after reboot and
1673                  * needs a reset. A cold reset makes the whole device
1674                  * disappear from USB bus and initialisation starts from
1675                  * beginning.
1676                  */
1677                 ath6kl_warn("htc wait target timed out, resetting device\n");
1678                 ath6kl_init_hw_reset(ar);
1679                 goto err_power_off;
1680         } else if (ret) {
1681                 ath6kl_err("htc wait target failed: %d\n", ret);
1682                 goto err_power_off;
1683         }
1684
1685         ret = ath6kl_init_service_ep(ar);
1686         if (ret) {
1687                 ath6kl_err("Endpoint service initilisation failed: %d\n", ret);
1688                 goto err_cleanup_scatter;
1689         }
1690
1691         /* setup credit distribution */
1692         ath6kl_htc_credit_setup(ar->htc_target, &ar->credit_state_info);
1693
1694         /* start HTC */
1695         ret = ath6kl_htc_start(ar->htc_target);
1696         if (ret) {
1697                 /* FIXME: call this */
1698                 ath6kl_cookie_cleanup(ar);
1699                 goto err_cleanup_scatter;
1700         }
1701
1702         /* Wait for Wmi event to be ready */
1703         timeleft = wait_event_interruptible_timeout(ar->event_wq,
1704                                                     test_bit(WMI_READY,
1705                                                              &ar->flag),
1706                                                     WMI_TIMEOUT);
1707         if (timeleft <= 0) {
1708                 clear_bit(WMI_READY, &ar->flag);
1709                 ath6kl_err("wmi is not ready or wait was interrupted: %ld\n",
1710                            timeleft);
1711                 ret = -EIO;
1712                 goto err_htc_stop;
1713         }
1714
1715         ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n");
1716
1717         if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) {
1718                 ath6kl_info("%s %s fw %s api %d%s\n",
1719                             ar->hw.name,
1720                             ath6kl_init_get_hif_name(ar->hif_type),
1721                             ar->wiphy->fw_version,
1722                             ar->fw_api,
1723                             test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
1724                 ath6kl_init_get_fwcaps(ar, buf, sizeof(buf));
1725                 ath6kl_info("firmware supports: %s\n", buf);
1726         }
1727
1728         if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
1729                 ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n",
1730                            ATH6KL_ABI_VERSION, ar->version.abi_ver);
1731                 ret = -EIO;
1732                 goto err_htc_stop;
1733         }
1734
1735         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
1736
1737         /* communicate the wmi protocol verision to the target */
1738         /* FIXME: return error */
1739         if ((ath6kl_set_host_app_area(ar)) != 0)
1740                 ath6kl_err("unable to set the host app area\n");
1741
1742         for (i = 0; i < ar->vif_max; i++) {
1743                 ret = ath6kl_target_config_wlan_params(ar, i);
1744                 if (ret)
1745                         goto err_htc_stop;
1746         }
1747
1748         return 0;
1749
1750 err_htc_stop:
1751         ath6kl_htc_stop(ar->htc_target);
1752 err_cleanup_scatter:
1753         ath6kl_hif_cleanup_scatter(ar);
1754 err_power_off:
1755         ath6kl_hif_power_off(ar);
1756
1757         return ret;
1758 }
1759
1760 int ath6kl_init_hw_start(struct ath6kl *ar)
1761 {
1762         int err;
1763
1764         err = __ath6kl_init_hw_start(ar);
1765         if (err)
1766                 return err;
1767         ar->state = ATH6KL_STATE_ON;
1768         return 0;
1769 }
1770
1771 static int __ath6kl_init_hw_stop(struct ath6kl *ar)
1772 {
1773         int ret;
1774
1775         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw stop\n");
1776
1777         ath6kl_htc_stop(ar->htc_target);
1778
1779         ath6kl_hif_stop(ar);
1780
1781         ath6kl_bmi_reset(ar);
1782
1783         ret = ath6kl_hif_power_off(ar);
1784         if (ret)
1785                 ath6kl_warn("failed to power off hif: %d\n", ret);
1786
1787         return 0;
1788 }
1789
1790 int ath6kl_init_hw_stop(struct ath6kl *ar)
1791 {
1792         int err;
1793
1794         err = __ath6kl_init_hw_stop(ar);
1795         if (err)
1796                 return err;
1797         ar->state = ATH6KL_STATE_OFF;
1798         return 0;
1799 }
1800
1801 void ath6kl_init_hw_restart(struct ath6kl *ar)
1802 {
1803         clear_bit(WMI_READY, &ar->flag);
1804
1805         ath6kl_cfg80211_stop_all(ar);
1806
1807         if (__ath6kl_init_hw_stop(ar)) {
1808                 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to stop during fw error recovery\n");
1809                 return;
1810         }
1811
1812         if (__ath6kl_init_hw_start(ar)) {
1813                 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n");
1814                 return;
1815         }
1816 }
1817
1818 void ath6kl_stop_txrx(struct ath6kl *ar)
1819 {
1820         struct ath6kl_vif *vif, *tmp_vif;
1821         int i;
1822
1823         set_bit(DESTROY_IN_PROGRESS, &ar->flag);
1824
1825         if (down_interruptible(&ar->sem)) {
1826                 ath6kl_err("down_interruptible failed\n");
1827                 return;
1828         }
1829
1830         for (i = 0; i < AP_MAX_NUM_STA; i++)
1831                 aggr_reset_state(ar->sta_list[i].aggr_conn);
1832
1833         spin_lock_bh(&ar->list_lock);
1834         list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) {
1835                 list_del(&vif->list);
1836                 spin_unlock_bh(&ar->list_lock);
1837                 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1838                 rtnl_lock();
1839                 ath6kl_cfg80211_vif_cleanup(vif);
1840                 rtnl_unlock();
1841                 spin_lock_bh(&ar->list_lock);
1842         }
1843         spin_unlock_bh(&ar->list_lock);
1844
1845         clear_bit(WMI_READY, &ar->flag);
1846
1847         if (ar->fw_recovery.enable)
1848                 del_timer_sync(&ar->fw_recovery.hb_timer);
1849
1850         /*
1851          * After wmi_shudown all WMI events will be dropped. We
1852          * need to cleanup the buffers allocated in AP mode and
1853          * give disconnect notification to stack, which usually
1854          * happens in the disconnect_event. Simulate the disconnect
1855          * event by calling the function directly. Sometimes
1856          * disconnect_event will be received when the debug logs
1857          * are collected.
1858          */
1859         ath6kl_wmi_shutdown(ar->wmi);
1860
1861         clear_bit(WMI_ENABLED, &ar->flag);
1862         if (ar->htc_target) {
1863                 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
1864                 ath6kl_htc_stop(ar->htc_target);
1865         }
1866
1867         /*
1868          * Try to reset the device if we can. The driver may have been
1869          * configure NOT to reset the target during a debug session.
1870          */
1871         ath6kl_init_hw_reset(ar);
1872
1873         up(&ar->sem);
1874 }
1875 EXPORT_SYMBOL(ath6kl_stop_txrx);