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                      = 0,
 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                         .tcmd           = AR6004_HW_1_3_TCMD_FIRMWARE_FILE,
 160                         .utf            = AR6004_HW_1_3_UTF_FIRMWARE_FILE,
 161                         .testscript     = AR6004_HW_1_3_TESTSCRIPT_FILE,
 162                 },
 163
 164                 .fw_board               = AR6004_HW_1_3_BOARD_DATA_FILE,
 165                 .fw_default_board       = AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE,
 166         },
 167         {
 168                 .id                             = AR6004_HW_3_0_VERSION,
 169                 .name                           = "ar6004 hw 3.0",
 170                 .dataset_patch_addr             = 0,
 171                 .app_load_addr                  = 0x1234,
 172                 .board_ext_data_addr            = 0,
 173                 .reserved_ram_size              = 7168,
 174                 .board_addr                     = 0x436400,
 175                 .testscript_addr                = 0,
 176                 .flags                          = 0,
 177
 178                 .fw = {
 179                         .dir            = AR6004_HW_3_0_FW_DIR,
 180                         .fw             = AR6004_HW_3_0_FIRMWARE_FILE,
 181                         .tcmd           = AR6004_HW_3_0_TCMD_FIRMWARE_FILE,
 182                         .utf            = AR6004_HW_3_0_UTF_FIRMWARE_FILE,
 183                         .testscript     = AR6004_HW_3_0_TESTSCRIPT_FILE,
 184                 },
 185
 186                 .fw_board               = AR6004_HW_3_0_BOARD_DATA_FILE,
 187                 .fw_default_board       = AR6004_HW_3_0_DEFAULT_BOARD_DATA_FILE,
 188         },
 189 };
 190
 191 /*
 192  * Include definitions here that can be used to tune the WLAN module
 193  * behavior. Different customers can tune the behavior as per their needs,
 194  * here.
 195  */
 196
 197 /*
 198  * This configuration item enable/disable keepalive support.
 199  * Keepalive support: In the absence of any data traffic to AP, null
 200  * frames will be sent to the AP at periodic interval, to keep the association
 201  * active. This configuration item defines the periodic interval.
 202  * Use value of zero to disable keepalive support
 203  * Default: 60 seconds
 204  */
 205 #define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60
 206
 207 /*
 208  * This configuration item sets the value of disconnect timeout
 209  * Firmware delays sending the disconnec event to the host for this
 210  * timeout after is gets disconnected from the current AP.
 211  * If the firmware successly roams within the disconnect timeout
 212  * it sends a new connect event
 213  */
 214 #define WLAN_CONFIG_DISCONNECT_TIMEOUT 10
 215
 216
 217 #define ATH6KL_DATA_OFFSET    64
 218 struct sk_buff *ath6kl_buf_alloc(int size)
 219 {
 220         struct sk_buff *skb;
 221         u16 reserved;
 222
 223         /* Add chacheline space at front and back of buffer */
 224         reserved = roundup((2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET +
 225                    sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES, 4);
 226         skb = dev_alloc_skb(size + reserved);
 227
 228         if (skb)
 229                 skb_reserve(skb, reserved - L1_CACHE_BYTES);
 230         return skb;
 231 }
 232
 233 void ath6kl_init_profile_info(struct ath6kl_vif *vif)
 234 {
 235         vif->ssid_len = 0;
 236         memset(vif->ssid, 0, sizeof(vif->ssid));
 237
 238         vif->dot11_auth_mode = OPEN_AUTH;
 239         vif->auth_mode = NONE_AUTH;
 240         vif->prwise_crypto = NONE_CRYPT;
 241         vif->prwise_crypto_len = 0;
 242         vif->grp_crypto = NONE_CRYPT;
 243         vif->grp_crypto_len = 0;
 244         memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
 245         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
 246         memset(vif->bssid, 0, sizeof(vif->bssid));
 247         vif->bss_ch = 0;
 248 }
 249
 250 static int ath6kl_set_host_app_area(struct ath6kl *ar)
 251 {
 252         u32 address, data;
 253         struct host_app_area host_app_area;
 254
 255         /* Fetch the address of the host_app_area_s
 256          * instance in the host interest area */
 257         address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest));
 258         address = TARG_VTOP(ar->target_type, address);
 259
 260         if (ath6kl_diag_read32(ar, address, &data))
 261                 return -EIO;
 262
 263         address = TARG_VTOP(ar->target_type, data);
 264         host_app_area.wmi_protocol_ver = cpu_to_le32(WMI_PROTOCOL_VERSION);
 265         if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area,
 266                               sizeof(struct host_app_area)))
 267                 return -EIO;
 268
 269         return 0;
 270 }
 271
 272 static inline void set_ac2_ep_map(struct ath6kl *ar,
 273                                   u8 ac,
 274                                   enum htc_endpoint_id ep)
 275 {
 276         ar->ac2ep_map[ac] = ep;
 277         ar->ep2ac_map[ep] = ac;
 278 }
 279
 280 /* connect to a service */
 281 static int ath6kl_connectservice(struct ath6kl *ar,
 282                                  struct htc_service_connect_req  *con_req,
 283                                  char *desc)
 284 {
 285         int status;
 286         struct htc_service_connect_resp response;
 287
 288         memset(&response, 0, sizeof(response));
 289
 290         status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response);
 291         if (status) {
 292                 ath6kl_err("failed to connect to %s service status:%d\n",
 293                            desc, status);
 294                 return status;
 295         }
 296
 297         switch (con_req->svc_id) {
 298         case WMI_CONTROL_SVC:
 299                 if (test_bit(WMI_ENABLED, &ar->flag))
 300                         ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint);
 301                 ar->ctrl_ep = response.endpoint;
 302                 break;
 303         case WMI_DATA_BE_SVC:
 304                 set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint);
 305                 break;
 306         case WMI_DATA_BK_SVC:
 307                 set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint);
 308                 break;
 309         case WMI_DATA_VI_SVC:
 310                 set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint);
 311                 break;
 312         case WMI_DATA_VO_SVC:
 313                 set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint);
 314                 break;
 315         default:
 316                 ath6kl_err("service id is not mapped %d\n", con_req->svc_id);
 317                 return -EINVAL;
 318         }
 319
 320         return 0;
 321 }
 322
 323 static int ath6kl_init_service_ep(struct ath6kl *ar)
 324 {
 325         struct htc_service_connect_req connect;
 326
 327         memset(&connect, 0, sizeof(connect));
 328
 329         /* these fields are the same for all service endpoints */
 330         connect.ep_cb.tx_comp_multi = ath6kl_tx_complete;
 331         connect.ep_cb.rx = ath6kl_rx;
 332         connect.ep_cb.rx_refill = ath6kl_rx_refill;
 333         connect.ep_cb.tx_full = ath6kl_tx_queue_full;
 334
 335         /*
 336          * Set the max queue depth so that our ath6kl_tx_queue_full handler
 337          * gets called.
 338         */
 339         connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH;
 340         connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4;
 341         if (!connect.ep_cb.rx_refill_thresh)
 342                 connect.ep_cb.rx_refill_thresh++;
 343
 344         /* connect to control service */
 345         connect.svc_id = WMI_CONTROL_SVC;
 346         if (ath6kl_connectservice(ar, &connect, "WMI CONTROL"))
 347                 return -EIO;
 348
 349         connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN;
 350
 351         /*
 352          * Limit the HTC message size on the send path, although e can
 353          * receive A-MSDU frames of 4K, we will only send ethernet-sized
 354          * (802.3) frames on the send path.
 355          */
 356         connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH;
 357
 358         /*
 359          * To reduce the amount of committed memory for larger A_MSDU
 360          * frames, use the recv-alloc threshold mechanism for larger
 361          * packets.
 362          */
 363         connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE;
 364         connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf;
 365
 366         /*
 367          * For the remaining data services set the connection flag to
 368          * reduce dribbling, if configured to do so.
 369          */
 370         connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB;
 371         connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK;
 372         connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF;
 373
 374         connect.svc_id = WMI_DATA_BE_SVC;
 375
 376         if (ath6kl_connectservice(ar, &connect, "WMI DATA BE"))
 377                 return -EIO;
 378
 379         /* connect to back-ground map this to WMI LOW_PRI */
 380         connect.svc_id = WMI_DATA_BK_SVC;
 381         if (ath6kl_connectservice(ar, &connect, "WMI DATA BK"))
 382                 return -EIO;
 383
 384         /* connect to Video service, map this to HI PRI */
 385         connect.svc_id = WMI_DATA_VI_SVC;
 386         if (ath6kl_connectservice(ar, &connect, "WMI DATA VI"))
 387                 return -EIO;
 388
 389         /*
 390          * Connect to VO service, this is currently not mapped to a WMI
 391          * priority stream due to historical reasons. WMI originally
 392          * defined 3 priorities over 3 mailboxes We can change this when
 393          * WMI is reworked so that priorities are not dependent on
 394          * mailboxes.
 395          */
 396         connect.svc_id = WMI_DATA_VO_SVC;
 397         if (ath6kl_connectservice(ar, &connect, "WMI DATA VO"))
 398                 return -EIO;
 399
 400         return 0;
 401 }
 402
 403 void ath6kl_init_control_info(struct ath6kl_vif *vif)
 404 {
 405         ath6kl_init_profile_info(vif);
 406         vif->def_txkey_index = 0;
 407         memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
 408         vif->ch_hint = 0;
 409 }
 410
 411 /*
 412  * Set HTC/Mbox operational parameters, this can only be called when the
 413  * target is in the BMI phase.
 414  */
 415 static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val,
 416                                  u8 htc_ctrl_buf)
 417 {
 418         int status;
 419         u32 blk_size;
 420
 421         blk_size = ar->mbox_info.block_size;
 422
 423         if (htc_ctrl_buf)
 424                 blk_size |=  ((u32)htc_ctrl_buf) << 16;
 425
 426         /* set the host interest area for the block size */
 427         status = ath6kl_bmi_write_hi32(ar, hi_mbox_io_block_sz, blk_size);
 428         if (status) {
 429                 ath6kl_err("bmi_write_memory for IO block size failed\n");
 430                 goto out;
 431         }
 432
 433         ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n",
 434                    blk_size,
 435                    ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)));
 436
 437         if (mbox_isr_yield_val) {
 438                 /* set the host interest area for the mbox ISR yield limit */
 439                 status = ath6kl_bmi_write_hi32(ar, hi_mbox_isr_yield_limit,
 440                                                mbox_isr_yield_val);
 441                 if (status) {
 442                         ath6kl_err("bmi_write_memory for yield limit failed\n");
 443                         goto out;
 444                 }
 445         }
 446
 447 out:
 448         return status;
 449 }
 450
 451 static int ath6kl_target_config_wlan_params(struct ath6kl *ar, int idx)
 452 {
 453         int ret;
 454
 455         /*
 456          * Configure the device for rx dot11 header rules. "0,0" are the
 457          * default values. Required if checksum offload is needed. Set
 458          * RxMetaVersion to 2.
 459          */
 460         ret = ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, idx,
 461                                                  ar->rx_meta_ver, 0, 0);
 462         if (ret) {
 463                 ath6kl_err("unable to set the rx frame format: %d\n", ret);
 464                 return ret;
 465         }
 466
 467         if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) {
 468                 ret = ath6kl_wmi_pmparams_cmd(ar->wmi, idx, 0, 1, 0, 0, 1,
 469                                               IGNORE_PS_FAIL_DURING_SCAN);
 470                 if (ret) {
 471                         ath6kl_err("unable to set power save fail event policy: %d\n",
 472                                    ret);
 473                         return ret;
 474                 }
 475         }
 476
 477         if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) {
 478                 ret = ath6kl_wmi_set_lpreamble_cmd(ar->wmi, idx, 0,
 479                                                    WMI_FOLLOW_BARKER_IN_ERP);
 480                 if (ret) {
 481                         ath6kl_err("unable to set barker preamble policy: %d\n",
 482                                    ret);
 483                         return ret;
 484                 }
 485         }
 486
 487         ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, idx,
 488                                            WLAN_CONFIG_KEEP_ALIVE_INTERVAL);
 489         if (ret) {
 490                 ath6kl_err("unable to set keep alive interval: %d\n", ret);
 491                 return ret;
 492         }
 493
 494         ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, idx,
 495                                          WLAN_CONFIG_DISCONNECT_TIMEOUT);
 496         if (ret) {
 497                 ath6kl_err("unable to set disconnect timeout: %d\n", ret);
 498                 return ret;
 499         }
 500
 501         if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) {
 502                 ret = ath6kl_wmi_set_wmm_txop(ar->wmi, idx, WMI_TXOP_DISABLED);
 503                 if (ret) {
 504                         ath6kl_err("unable to set txop bursting: %d\n", ret);
 505                         return ret;
 506                 }
 507         }
 508
 509         if (ar->p2p && (ar->vif_max == 1 || idx)) {
 510                 ret = ath6kl_wmi_info_req_cmd(ar->wmi, idx,
 511                                               P2P_FLAG_CAPABILITIES_REQ |
 512                                               P2P_FLAG_MACADDR_REQ |
 513                                               P2P_FLAG_HMODEL_REQ);
 514                 if (ret) {
 515                         ath6kl_dbg(ATH6KL_DBG_TRC,
 516                                    "failed to request P2P capabilities (%d) - assuming P2P not supported\n",
 517                                    ret);
 518                         ar->p2p = false;
 519                 }
 520         }
 521
 522         if (ar->p2p && (ar->vif_max == 1 || idx)) {
 523                 /* Enable Probe Request reporting for P2P */
 524                 ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, idx, true);
 525                 if (ret) {
 526                         ath6kl_dbg(ATH6KL_DBG_TRC,
 527                                    "failed to enable Probe Request reporting (%d)\n",
 528                                    ret);
 529                 }
 530         }
 531
 532         return ret;
 533 }
 534
 535 int ath6kl_configure_target(struct ath6kl *ar)
 536 {
 537         u32 param, ram_reserved_size;
 538         u8 fw_iftype, fw_mode = 0, fw_submode = 0;
 539         int i, status;
 540
 541         param = !!(ar->conf_flags & ATH6KL_CONF_UART_DEBUG);
 542         if (ath6kl_bmi_write_hi32(ar, hi_serial_enable, param)) {
 543                 ath6kl_err("bmi_write_memory for uart debug failed\n");
 544                 return -EIO;
 545         }
 546
 547         /*
 548          * Note: Even though the firmware interface type is
 549          * chosen as BSS_STA for all three interfaces, can
 550          * be configured to IBSS/AP as long as the fw submode
 551          * remains normal mode (0 - AP, STA and IBSS). But
 552          * due to an target assert in firmware only one interface is
 553          * configured for now.
 554          */
 555         fw_iftype = HI_OPTION_FW_MODE_BSS_STA;
 556
 557         for (i = 0; i < ar->vif_max; i++)
 558                 fw_mode |= fw_iftype << (i * HI_OPTION_FW_MODE_BITS);
 559
 560         /*
 561          * Submodes when fw does not support dynamic interface
 562          * switching:
 563          *              vif[0] - AP/STA/IBSS
 564          *              vif[1] - "P2P dev"/"P2P GO"/"P2P Client"
 565          *              vif[2] - "P2P dev"/"P2P GO"/"P2P Client"
 566          * Otherwise, All the interface are initialized to p2p dev.
 567          */
 568
 569         if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
 570                      ar->fw_capabilities)) {
 571                 for (i = 0; i < ar->vif_max; i++)
 572                         fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
 573                                 (i * HI_OPTION_FW_SUBMODE_BITS);
 574         } else {
 575                 for (i = 0; i < ar->max_norm_iface; i++)
 576                         fw_submode |= HI_OPTION_FW_SUBMODE_NONE <<
 577                                 (i * HI_OPTION_FW_SUBMODE_BITS);
 578
 579                 for (i = ar->max_norm_iface; i < ar->vif_max; i++)
 580                         fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
 581                                 (i * HI_OPTION_FW_SUBMODE_BITS);
 582
 583                 if (ar->p2p && ar->vif_max == 1)
 584                         fw_submode = HI_OPTION_FW_SUBMODE_P2PDEV;
 585         }
 586
 587         if (ath6kl_bmi_write_hi32(ar, hi_app_host_interest,
 588                                   HTC_PROTOCOL_VERSION) != 0) {
 589                 ath6kl_err("bmi_write_memory for htc version failed\n");
 590                 return -EIO;
 591         }
 592
 593         /* set the firmware mode to STA/IBSS/AP */
 594         param = 0;
 595
 596         if (ath6kl_bmi_read_hi32(ar, hi_option_flag, &param) != 0) {
 597                 ath6kl_err("bmi_read_memory for setting fwmode failed\n");
 598                 return -EIO;
 599         }
 600
 601         param |= (ar->vif_max << HI_OPTION_NUM_DEV_SHIFT);
 602         param |= fw_mode << HI_OPTION_FW_MODE_SHIFT;
 603         param |= fw_submode << HI_OPTION_FW_SUBMODE_SHIFT;
 604
 605         param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
 606         param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
 607
 608         if (ath6kl_bmi_write_hi32(ar, hi_option_flag, param) != 0) {
 609                 ath6kl_err("bmi_write_memory for setting fwmode failed\n");
 610                 return -EIO;
 611         }
 612
 613         ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n");
 614
 615         /*
 616          * Hardcode the address use for the extended board data
 617          * Ideally this should be pre-allocate by the OS at boot time
 618          * But since it is a new feature and board data is loaded
 619          * at init time, we have to workaround this from host.
 620          * It is difficult to patch the firmware boot code,
 621          * but possible in theory.
 622          */
 623
 624         if ((ar->target_type == TARGET_TYPE_AR6003) ||
 625             (ar->version.target_ver == AR6004_HW_1_3_VERSION) ||
 626             (ar->version.target_ver == AR6004_HW_3_0_VERSION)) {
 627                 param = ar->hw.board_ext_data_addr;
 628                 ram_reserved_size = ar->hw.reserved_ram_size;
 629
 630                 if (ath6kl_bmi_write_hi32(ar, hi_board_ext_data, param) != 0) {
 631                         ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n");
 632                         return -EIO;
 633                 }
 634
 635                 if (ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz,
 636                                           ram_reserved_size) != 0) {
 637                         ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n");
 638                         return -EIO;
 639                 }
 640         }
 641
 642         /* set the block size for the target */
 643         if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0))
 644                 /* use default number of control buffers */
 645                 return -EIO;
 646
 647         /* Configure GPIO AR600x UART */
 648         status = ath6kl_bmi_write_hi32(ar, hi_dbg_uart_txpin,
 649                                        ar->hw.uarttx_pin);
 650         if (status)
 651                 return status;
 652
 653         /* Configure target refclk_hz */
 654         if (ar->hw.refclk_hz != 0) {
 655                 status = ath6kl_bmi_write_hi32(ar, hi_refclk_hz,
 656                                                ar->hw.refclk_hz);
 657                 if (status)
 658                         return status;
 659         }
 660
 661         return 0;
 662 }
 663
 664 /* firmware upload */
 665 static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
 666                          u8 **fw, size_t *fw_len)
 667 {
 668         const struct firmware *fw_entry;
 669         int ret;
 670
 671         ret = reject_firmware(&fw_entry, filename, ar->dev);
 672         if (ret)
 673                 return ret;
 674
 675         *fw_len = fw_entry->size;
 676         *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
 677
 678         if (*fw == NULL)
 679                 ret = -ENOMEM;
 680
 681         release_firmware(fw_entry);
 682
 683         return ret;
 684 }
 685
 686 #ifdef CONFIG_OF
 687 /*
 688  * Check the device tree for a board-id and use it to construct
 689  * the pathname to the firmware file.  /*(DEBLOBBED)*/
 690 static bool check_device_tree(struct ath6kl *ar)
 691 {
 692         static const char *board_id_prop = "atheros,board-id";
 693         struct device_node *node;
 694         char board_filename[64];
 695         const char *board_id;
 696         int ret;
 697
 698         for_each_compatible_node(node, NULL, "atheros,ath6kl") {
 699                 board_id = of_get_property(node, board_id_prop, NULL);
 700                 if (board_id == NULL) {
 701                         ath6kl_warn("No \"%s\" property on %s node.\n",
 702                                     board_id_prop, node->name);
 703                         continue;
 704                 }
 705                 snprintf(board_filename, sizeof(board_filename),
 706                          "/*(DEBLOBBED)*/", ar->hw.fw.dir, board_id);
 707
 708                 ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board,
 709                                     &ar->fw_board_len);
 710                 if (ret) {
 711                         ath6kl_err("Failed to get DT board file %s: %d\n",
 712                                    board_filename, ret);
 713                         continue;
 714                 }
 715                 of_node_put(node);
 716                 return true;
 717         }
 718         return false;
 719 }
 720 #else
 721 static bool check_device_tree(struct ath6kl *ar)
 722 {
 723         return false;
 724 }
 725 #endif /* CONFIG_OF */
 726
 727 static int ath6kl_fetch_board_file(struct ath6kl *ar)
 728 {
 729         const char *filename;
 730         int ret;
 731
 732         if (ar->fw_board != NULL)
 733                 return 0;
 734
 735         if (WARN_ON(ar->hw.fw_board == NULL))
 736                 return -EINVAL;
 737
 738         filename = ar->hw.fw_board;
 739
 740         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 741                             &ar->fw_board_len);
 742         if (ret == 0) {
 743                 /* managed to get proper board file */
 744                 return 0;
 745         }
 746
 747         if (check_device_tree(ar)) {
 748                 /* got board file from device tree */
 749                 return 0;
 750         }
 751
 752         /* there was no proper board file, try to use default instead */
 753         ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
 754                     filename, ret);
 755
 756         filename = ar->hw.fw_default_board;
 757
 758         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 759                             &ar->fw_board_len);
 760         if (ret) {
 761                 ath6kl_err("Failed to get default board file %s: %d\n",
 762                            filename, ret);
 763                 return ret;
 764         }
 765
 766         ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
 767         ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
 768
 769         return 0;
 770 }
 771
 772 static int ath6kl_fetch_otp_file(struct ath6kl *ar)
 773 {
 774         char filename[100];
 775         int ret;
 776
 777         if (ar->fw_otp != NULL)
 778                 return 0;
 779
 780         if (ar->hw.fw.otp == NULL) {
 781                 ath6kl_dbg(ATH6KL_DBG_BOOT,
 782                            "no OTP file configured for this hw\n");
 783                 return 0;
 784         }
 785
 786         snprintf(filename, sizeof(filename), "%s/%s",
 787                  ar->hw.fw.dir, ar->hw.fw.otp);
 788
 789         ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
 790                             &ar->fw_otp_len);
 791         if (ret) {
 792                 ath6kl_err("Failed to get OTP file %s: %d\n",
 793                            filename, ret);
 794                 return ret;
 795         }
 796
 797         return 0;
 798 }
 799
 800 static int ath6kl_fetch_testmode_file(struct ath6kl *ar)
 801 {
 802         char filename[100];
 803         int ret;
 804
 805         if (ar->testmode == 0)
 806                 return 0;
 807
 808         ath6kl_dbg(ATH6KL_DBG_BOOT, "testmode %d\n", ar->testmode);
 809
 810         if (ar->testmode == 2) {
 811                 if (ar->hw.fw.utf == NULL) {
 812                         ath6kl_warn("testmode 2 not supported\n");
 813                         return -EOPNOTSUPP;
 814                 }
 815
 816                 snprintf(filename, sizeof(filename), "%s/%s",
 817                          ar->hw.fw.dir, ar->hw.fw.utf);
 818         } else {
 819                 if (ar->hw.fw.tcmd == NULL) {
 820                         ath6kl_warn("testmode 1 not supported\n");
 821                         return -EOPNOTSUPP;
 822                 }
 823
 824                 snprintf(filename, sizeof(filename), "%s/%s",
 825                          ar->hw.fw.dir, ar->hw.fw.tcmd);
 826         }
 827
 828         set_bit(TESTMODE, &ar->flag);
 829
 830         ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
 831         if (ret) {
 832                 ath6kl_err("Failed to get testmode %d firmware file %s: %d\n",
 833                            ar->testmode, filename, ret);
 834                 return ret;
 835         }
 836
 837         return 0;
 838 }
 839
 840 static int ath6kl_fetch_fw_file(struct ath6kl *ar)
 841 {
 842         char filename[100];
 843         int ret;
 844
 845         if (ar->fw != NULL)
 846                 return 0;
 847
 848         /* FIXME: remove WARN_ON() as we won't support FW API 1 for long */
 849         if (WARN_ON(ar->hw.fw.fw == NULL))
 850                 return -EINVAL;
 851
 852         snprintf(filename, sizeof(filename), "%s/%s",
 853                  ar->hw.fw.dir, ar->hw.fw.fw);
 854
 855         ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
 856         if (ret) {
 857                 ath6kl_err("Failed to get firmware file %s: %d\n",
 858                            filename, ret);
 859                 return ret;
 860         }
 861
 862         return 0;
 863 }
 864
 865 static int ath6kl_fetch_patch_file(struct ath6kl *ar)
 866 {
 867         char filename[100];
 868         int ret;
 869
 870         if (ar->fw_patch != NULL)
 871                 return 0;
 872
 873         if (ar->hw.fw.patch == NULL)
 874                 return 0;
 875
 876         snprintf(filename, sizeof(filename), "%s/%s",
 877                  ar->hw.fw.dir, ar->hw.fw.patch);
 878
 879         ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
 880                             &ar->fw_patch_len);
 881         if (ret) {
 882                 ath6kl_err("Failed to get patch file %s: %d\n",
 883                            filename, ret);
 884                 return ret;
 885         }
 886
 887         return 0;
 888 }
 889
 890 static int ath6kl_fetch_testscript_file(struct ath6kl *ar)
 891 {
 892         char filename[100];
 893         int ret;
 894
 895         if (ar->testmode != 2)
 896                 return 0;
 897
 898         if (ar->fw_testscript != NULL)
 899                 return 0;
 900
 901         if (ar->hw.fw.testscript == NULL)
 902                 return 0;
 903
 904         snprintf(filename, sizeof(filename), "%s/%s",
 905                  ar->hw.fw.dir, ar->hw.fw.testscript);
 906
 907         ret = ath6kl_get_fw(ar, filename, &ar->fw_testscript,
 908                                 &ar->fw_testscript_len);
 909         if (ret) {
 910                 ath6kl_err("Failed to get testscript file %s: %d\n",
 911                            filename, ret);
 912                 return ret;
 913         }
 914
 915         return 0;
 916 }
 917
 918 static int ath6kl_fetch_fw_api1(struct ath6kl *ar)
 919 {
 920         int ret;
 921
 922         ret = ath6kl_fetch_otp_file(ar);
 923         if (ret)
 924                 return ret;
 925
 926         ret = ath6kl_fetch_fw_file(ar);
 927         if (ret)
 928                 return ret;
 929
 930         ret = ath6kl_fetch_patch_file(ar);
 931         if (ret)
 932                 return ret;
 933
 934         ret = ath6kl_fetch_testscript_file(ar);
 935         if (ret)
 936                 return ret;
 937
 938         return 0;
 939 }
 940
 941 static int ath6kl_fetch_fw_apin(struct ath6kl *ar, const char *name)
 942 {
 943         size_t magic_len, len, ie_len;
 944         const struct firmware *fw;
 945         struct ath6kl_fw_ie *hdr;
 946         char filename[100];
 947         const u8 *data;
 948         int ret, ie_id, i, index, bit;
 949         __le32 *val;
 950
 951         snprintf(filename, sizeof(filename), "%s/%s", ar->hw.fw.dir, name);
 952
 953         ret = reject_firmware(&fw, filename, ar->dev);
 954         if (ret)
 955                 return ret;
 956
 957         data = fw->data;
 958         len = fw->size;
 959
 960         /* magic also includes the null byte, check that as well */
 961         magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1;
 962
 963         if (len < magic_len) {
 964                 ret = -EINVAL;
 965                 goto out;
 966         }
 967
 968         if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) {
 969                 ret = -EINVAL;
 970                 goto out;
 971         }
 972
 973         len -= magic_len;
 974         data += magic_len;
 975
 976         /* loop elements */
 977         while (len > sizeof(struct ath6kl_fw_ie)) {
 978                 /* hdr is unaligned! */
 979                 hdr = (struct ath6kl_fw_ie *) data;
 980
 981                 ie_id = le32_to_cpup(&hdr->id);
 982                 ie_len = le32_to_cpup(&hdr->len);
 983
 984                 len -= sizeof(*hdr);
 985                 data += sizeof(*hdr);
 986
 987                 if (len < ie_len) {
 988                         ret = -EINVAL;
 989                         goto out;
 990                 }
 991
 992                 switch (ie_id) {
 993                 case ATH6KL_FW_IE_FW_VERSION:
 994                         strlcpy(ar->wiphy->fw_version, data,
 995                                 min(sizeof(ar->wiphy->fw_version), ie_len+1));
 996
 997                         ath6kl_dbg(ATH6KL_DBG_BOOT,
 998                                    "found fw version %s\n",
 999                                     ar->wiphy->fw_version);
1000                         break;
1001                 case ATH6KL_FW_IE_OTP_IMAGE:
1002                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n",
1003                                    ie_len);
1004
1005                         ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL);
1006
1007                         if (ar->fw_otp == NULL) {
1008                                 ret = -ENOMEM;
1009                                 goto out;
1010                         }
1011
1012                         ar->fw_otp_len = ie_len;
1013                         break;
1014                 case ATH6KL_FW_IE_FW_IMAGE:
1015                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n",
1016                                    ie_len);
1017
1018                         /* in testmode we already might have a fw file */
1019                         if (ar->fw != NULL)
1020                                 break;
1021
1022                         ar->fw = vmalloc(ie_len);
1023
1024                         if (ar->fw == NULL) {
1025                                 ret = -ENOMEM;
1026                                 goto out;
1027                         }
1028
1029                         memcpy(ar->fw, data, ie_len);
1030                         ar->fw_len = ie_len;
1031                         break;
1032                 case ATH6KL_FW_IE_PATCH_IMAGE:
1033                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n",
1034                                    ie_len);
1035
1036                         ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL);
1037
1038                         if (ar->fw_patch == NULL) {
1039                                 ret = -ENOMEM;
1040                                 goto out;
1041                         }
1042
1043                         ar->fw_patch_len = ie_len;
1044                         break;
1045                 case ATH6KL_FW_IE_RESERVED_RAM_SIZE:
1046                         val = (__le32 *) data;
1047                         ar->hw.reserved_ram_size = le32_to_cpup(val);
1048
1049                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1050                                    "found reserved ram size ie %d\n",
1051                                    ar->hw.reserved_ram_size);
1052                         break;
1053                 case ATH6KL_FW_IE_CAPABILITIES:
1054                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1055                                    "found firmware capabilities ie (%zd B)\n",
1056                                    ie_len);
1057
1058                         for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1059                                 index = i / 8;
1060                                 bit = i % 8;
1061
1062                                 if (index == ie_len)
1063                                         break;
1064
1065                                 if (data[index] & (1 << bit))
1066                                         __set_bit(i, ar->fw_capabilities);
1067                         }
1068
1069                         ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "",
1070                                         ar->fw_capabilities,
1071                                         sizeof(ar->fw_capabilities));
1072                         break;
1073                 case ATH6KL_FW_IE_PATCH_ADDR:
1074                         if (ie_len != sizeof(*val))
1075                                 break;
1076
1077                         val = (__le32 *) data;
1078                         ar->hw.dataset_patch_addr = le32_to_cpup(val);
1079
1080                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1081                                    "found patch address ie 0x%x\n",
1082                                    ar->hw.dataset_patch_addr);
1083                         break;
1084                 case ATH6KL_FW_IE_BOARD_ADDR:
1085                         if (ie_len != sizeof(*val))
1086                                 break;
1087
1088                         val = (__le32 *) data;
1089                         ar->hw.board_addr = le32_to_cpup(val);
1090
1091                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1092                                    "found board address ie 0x%x\n",
1093                                    ar->hw.board_addr);
1094                         break;
1095                 case ATH6KL_FW_IE_VIF_MAX:
1096                         if (ie_len != sizeof(*val))
1097                                 break;
1098
1099                         val = (__le32 *) data;
1100                         ar->vif_max = min_t(unsigned int, le32_to_cpup(val),
1101                                             ATH6KL_VIF_MAX);
1102
1103                         if (ar->vif_max > 1 && !ar->p2p)
1104                                 ar->max_norm_iface = 2;
1105
1106                         ath6kl_dbg(ATH6KL_DBG_BOOT,
1107                                    "found vif max ie %d\n", ar->vif_max);
1108                         break;
1109                 default:
1110                         ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n",
1111                                    le32_to_cpup(&hdr->id));
1112                         break;
1113                 }
1114
1115                 len -= ie_len;
1116                 data += ie_len;
1117         };
1118
1119         ret = 0;
1120 out:
1121         release_firmware(fw);
1122
1123         return ret;
1124 }
1125
1126 int ath6kl_init_fetch_firmwares(struct ath6kl *ar)
1127 {
1128         int ret;
1129
1130         ret = ath6kl_fetch_board_file(ar);
1131         if (ret)
1132                 return ret;
1133
1134         ret = ath6kl_fetch_testmode_file(ar);
1135         if (ret)
1136                 return ret;
1137
1138         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API5_FILE);
1139         if (ret == 0) {
1140                 ar->fw_api = 5;
1141                 goto out;
1142         }
1143
1144         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API4_FILE);
1145         if (ret == 0) {
1146                 ar->fw_api = 4;
1147                 goto out;
1148         }
1149
1150         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API3_FILE);
1151         if (ret == 0) {
1152                 ar->fw_api = 3;
1153                 goto out;
1154         }
1155
1156         ret = ath6kl_fetch_fw_apin(ar, ATH6KL_FW_API2_FILE);
1157         if (ret == 0) {
1158                 ar->fw_api = 2;
1159                 goto out;
1160         }
1161
1162         ret = ath6kl_fetch_fw_api1(ar);
1163         if (ret)
1164                 return ret;
1165
1166         ar->fw_api = 1;
1167
1168 out:
1169         ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api %d\n", ar->fw_api);
1170
1171         return 0;
1172 }
1173
1174 static int ath6kl_upload_board_file(struct ath6kl *ar)
1175 {
1176         u32 board_address, board_ext_address, param;
1177         u32 board_data_size, board_ext_data_size;
1178         int ret;
1179
1180         if (WARN_ON(ar->fw_board == NULL))
1181                 return -ENOENT;
1182
1183         /*
1184          * Determine where in Target RAM to write Board Data.
1185          * For AR6004, host determine Target RAM address for
1186          * writing board data.
1187          */
1188         if (ar->hw.board_addr != 0) {
1189                 board_address = ar->hw.board_addr;
1190                 ath6kl_bmi_write_hi32(ar, hi_board_data,
1191                                       board_address);
1192         } else {
1193                 ret = ath6kl_bmi_read_hi32(ar, hi_board_data, &board_address);
1194                 if (ret) {
1195                         ath6kl_err("Failed to get board file target address.\n");
1196                         return ret;
1197                 }
1198         }
1199
1200         /* determine where in target ram to write extended board data */
1201         ret = ath6kl_bmi_read_hi32(ar, hi_board_ext_data, &board_ext_address);
1202         if (ret) {
1203                 ath6kl_err("Failed to get extended board file target address.\n");
1204                 return ret;
1205         }
1206
1207         if (ar->target_type == TARGET_TYPE_AR6003 &&
1208             board_ext_address == 0) {
1209                 ath6kl_err("Failed to get board file target address.\n");
1210                 return -EINVAL;
1211         }
1212
1213         switch (ar->target_type) {
1214         case TARGET_TYPE_AR6003:
1215                 board_data_size = AR6003_BOARD_DATA_SZ;
1216                 board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ;
1217                 if (ar->fw_board_len > (board_data_size + board_ext_data_size))
1218                         board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ_V2;
1219                 break;
1220         case TARGET_TYPE_AR6004:
1221                 board_data_size = AR6004_BOARD_DATA_SZ;
1222                 board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ;
1223                 break;
1224         default:
1225                 WARN_ON(1);
1226                 return -EINVAL;
1227         }
1228
1229         if (board_ext_address &&
1230             ar->fw_board_len == (board_data_size + board_ext_data_size)) {
1231                 /* write extended board data */
1232                 ath6kl_dbg(ATH6KL_DBG_BOOT,
1233                            "writing extended board data to 0x%x (%d B)\n",
1234                            board_ext_address, board_ext_data_size);
1235
1236                 ret = ath6kl_bmi_write(ar, board_ext_address,
1237                                        ar->fw_board + board_data_size,
1238                                        board_ext_data_size);
1239                 if (ret) {
1240                         ath6kl_err("Failed to write extended board data: %d\n",
1241                                    ret);
1242                         return ret;
1243                 }
1244
1245                 /* record that extended board data is initialized */
1246                 param = (board_ext_data_size << 16) | 1;
1247
1248                 ath6kl_bmi_write_hi32(ar, hi_board_ext_data_config, param);
1249         }
1250
1251         if (ar->fw_board_len < board_data_size) {
1252                 ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
1253                 ret = -EINVAL;
1254                 return ret;
1255         }
1256
1257         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n",
1258                    board_address, board_data_size);
1259
1260         ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
1261                                board_data_size);
1262
1263         if (ret) {
1264                 ath6kl_err("Board file bmi write failed: %d\n", ret);
1265                 return ret;
1266         }
1267
1268         /* record the fact that Board Data IS initialized */
1269         if ((ar->version.target_ver == AR6004_HW_1_3_VERSION) ||
1270             (ar->version.target_ver == AR6004_HW_3_0_VERSION))
1271                 param = board_data_size;
1272         else
1273                 param = 1;
1274
1275         ath6kl_bmi_write_hi32(ar, hi_board_data_initialized, param);
1276
1277         return ret;
1278 }
1279
1280 static int ath6kl_upload_otp(struct ath6kl *ar)
1281 {
1282         u32 address, param;
1283         bool from_hw = false;
1284         int ret;
1285
1286         if (ar->fw_otp == NULL)
1287                 return 0;
1288
1289         address = ar->hw.app_load_addr;
1290
1291         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address,
1292                    ar->fw_otp_len);
1293
1294         ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
1295                                        ar->fw_otp_len);
1296         if (ret) {
1297                 ath6kl_err("Failed to upload OTP file: %d\n", ret);
1298                 return ret;
1299         }
1300
1301         /* read firmware start address */
1302         ret = ath6kl_bmi_read_hi32(ar, hi_app_start, &address);
1303
1304         if (ret) {
1305                 ath6kl_err("Failed to read hi_app_start: %d\n", ret);
1306                 return ret;
1307         }
1308
1309         if (ar->hw.app_start_override_addr == 0) {
1310                 ar->hw.app_start_override_addr = address;
1311                 from_hw = true;
1312         }
1313
1314         ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n",
1315                    from_hw ? " (from hw)" : "",
1316                    ar->hw.app_start_override_addr);
1317
1318         /* execute the OTP code */
1319         ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n",
1320                    ar->hw.app_start_override_addr);
1321         param = 0;
1322         ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, &param);
1323
1324         return ret;
1325 }
1326
1327 static int ath6kl_upload_firmware(struct ath6kl *ar)
1328 {
1329         u32 address;
1330         int ret;
1331
1332         if (WARN_ON(ar->fw == NULL))
1333                 return 0;
1334
1335         address = ar->hw.app_load_addr;
1336
1337         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n",
1338                    address, ar->fw_len);
1339
1340         ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
1341
1342         if (ret) {
1343                 ath6kl_err("Failed to write firmware: %d\n", ret);
1344                 return ret;
1345         }
1346
1347         /*
1348          * Set starting address for firmware
1349          * Don't need to setup app_start override addr on AR6004
1350          */
1351         if (ar->target_type != TARGET_TYPE_AR6004) {
1352                 address = ar->hw.app_start_override_addr;
1353                 ath6kl_bmi_set_app_start(ar, address);
1354         }
1355         return ret;
1356 }
1357
1358 static int ath6kl_upload_patch(struct ath6kl *ar)
1359 {
1360         u32 address;
1361         int ret;
1362
1363         if (ar->fw_patch == NULL)
1364                 return 0;
1365
1366         address = ar->hw.dataset_patch_addr;
1367
1368         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n",
1369                    address, ar->fw_patch_len);
1370
1371         ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
1372         if (ret) {
1373                 ath6kl_err("Failed to write patch file: %d\n", ret);
1374                 return ret;
1375         }
1376
1377         ath6kl_bmi_write_hi32(ar, hi_dset_list_head, address);
1378
1379         return 0;
1380 }
1381
1382 static int ath6kl_upload_testscript(struct ath6kl *ar)
1383 {
1384         u32 address;
1385         int ret;
1386
1387         if (ar->testmode != 2)
1388                 return 0;
1389
1390         if (ar->fw_testscript == NULL)
1391                 return 0;
1392
1393         address = ar->hw.testscript_addr;
1394
1395         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing testscript to 0x%x (%zd B)\n",
1396                    address, ar->fw_testscript_len);
1397
1398         ret = ath6kl_bmi_write(ar, address, ar->fw_testscript,
1399                 ar->fw_testscript_len);
1400         if (ret) {
1401                 ath6kl_err("Failed to write testscript file: %d\n", ret);
1402                 return ret;
1403         }
1404
1405         ath6kl_bmi_write_hi32(ar, hi_ota_testscript, address);
1406
1407         if ((ar->version.target_ver != AR6004_HW_1_3_VERSION) &&
1408             (ar->version.target_ver != AR6004_HW_3_0_VERSION))
1409                 ath6kl_bmi_write_hi32(ar, hi_end_ram_reserve_sz, 4096);
1410
1411         ath6kl_bmi_write_hi32(ar, hi_test_apps_related, 1);
1412
1413         return 0;
1414 }
1415
1416 static int ath6kl_init_upload(struct ath6kl *ar)
1417 {
1418         u32 param, options, sleep, address;
1419         int status = 0;
1420
1421         if (ar->target_type != TARGET_TYPE_AR6003 &&
1422             ar->target_type != TARGET_TYPE_AR6004)
1423                 return -EINVAL;
1424
1425         /* temporarily disable system sleep */
1426         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1427         status = ath6kl_bmi_reg_read(ar, address, &param);
1428         if (status)
1429                 return status;
1430
1431         options = param;
1432
1433         param |= ATH6KL_OPTION_SLEEP_DISABLE;
1434         status = ath6kl_bmi_reg_write(ar, address, param);
1435         if (status)
1436                 return status;
1437
1438         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1439         status = ath6kl_bmi_reg_read(ar, address, &param);
1440         if (status)
1441                 return status;
1442
1443         sleep = param;
1444
1445         param |= SM(SYSTEM_SLEEP_DISABLE, 1);
1446         status = ath6kl_bmi_reg_write(ar, address, param);
1447         if (status)
1448                 return status;
1449
1450         ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
1451                    options, sleep);
1452
1453         /* program analog PLL register */
1454         /* no need to control 40/44MHz clock on AR6004 */
1455         if (ar->target_type != TARGET_TYPE_AR6004) {
1456                 status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
1457                                               0xF9104001);
1458
1459                 if (status)
1460                         return status;
1461
1462                 /* Run at 80/88MHz by default */
1463                 param = SM(CPU_CLOCK_STANDARD, 1);
1464
1465                 address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
1466                 status = ath6kl_bmi_reg_write(ar, address, param);
1467                 if (status)
1468                         return status;
1469         }
1470
1471         param = 0;
1472         address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
1473         param = SM(LPO_CAL_ENABLE, 1);
1474         status = ath6kl_bmi_reg_write(ar, address, param);
1475         if (status)
1476                 return status;
1477
1478         /* WAR to avoid SDIO CRC err */
1479         if (ar->hw.flags & ATH6KL_HW_SDIO_CRC_ERROR_WAR) {
1480                 ath6kl_err("temporary war to avoid sdio crc error\n");
1481
1482                 param = 0x28;
1483                 address = GPIO_BASE_ADDRESS + GPIO_PIN9_ADDRESS;
1484                 status = ath6kl_bmi_reg_write(ar, address, param);
1485                 if (status)
1486                         return status;
1487
1488                 param = 0x20;
1489
1490                 address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
1491                 status = ath6kl_bmi_reg_write(ar, address, param);
1492                 if (status)
1493                         return status;
1494
1495                 address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
1496                 status = ath6kl_bmi_reg_write(ar, address, param);
1497                 if (status)
1498                         return status;
1499
1500                 address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
1501                 status = ath6kl_bmi_reg_write(ar, address, param);
1502                 if (status)
1503                         return status;
1504
1505                 address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
1506                 status = ath6kl_bmi_reg_write(ar, address, param);
1507                 if (status)
1508                         return status;
1509         }
1510
1511         /* write EEPROM data to Target RAM */
1512         status = ath6kl_upload_board_file(ar);
1513         if (status)
1514                 return status;
1515
1516         /* transfer One time Programmable data */
1517         status = ath6kl_upload_otp(ar);
1518         if (status)
1519                 return status;
1520
1521         /* Download Target firmware */
1522         status = ath6kl_upload_firmware(ar);
1523         if (status)
1524                 return status;
1525
1526         status = ath6kl_upload_patch(ar);
1527         if (status)
1528                 return status;
1529
1530         /* Download the test script */
1531         status = ath6kl_upload_testscript(ar);
1532         if (status)
1533                 return status;
1534
1535         /* Restore system sleep */
1536         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1537         status = ath6kl_bmi_reg_write(ar, address, sleep);
1538         if (status)
1539                 return status;
1540
1541         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1542         param = options | 0x20;
1543         status = ath6kl_bmi_reg_write(ar, address, param);
1544         if (status)
1545                 return status;
1546
1547         return status;
1548 }
1549
1550 int ath6kl_init_hw_params(struct ath6kl *ar)
1551 {
1552         const struct ath6kl_hw *uninitialized_var(hw);
1553         int i;
1554
1555         for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
1556                 hw = &hw_list[i];
1557
1558                 if (hw->id == ar->version.target_ver)
1559                         break;
1560         }
1561
1562         if (i == ARRAY_SIZE(hw_list)) {
1563                 ath6kl_err("Unsupported hardware version: 0x%x\n",
1564                            ar->version.target_ver);
1565                 return -EINVAL;
1566         }
1567
1568         ar->hw = *hw;
1569
1570         ath6kl_dbg(ATH6KL_DBG_BOOT,
1571                    "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n",
1572                    ar->version.target_ver, ar->target_type,
1573                    ar->hw.dataset_patch_addr, ar->hw.app_load_addr);
1574         ath6kl_dbg(ATH6KL_DBG_BOOT,
1575                    "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x",
1576                    ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr,
1577                    ar->hw.reserved_ram_size);
1578         ath6kl_dbg(ATH6KL_DBG_BOOT,
1579                    "refclk_hz %d uarttx_pin %d",
1580                    ar->hw.refclk_hz, ar->hw.uarttx_pin);
1581
1582         return 0;
1583 }
1584
1585 static const char *ath6kl_init_get_hif_name(enum ath6kl_hif_type type)
1586 {
1587         switch (type) {
1588         case ATH6KL_HIF_TYPE_SDIO:
1589                 return "sdio";
1590         case ATH6KL_HIF_TYPE_USB:
1591                 return "usb";
1592         }
1593
1594         return NULL;
1595 }
1596
1597
1598 static const struct fw_capa_str_map {
1599         int id;
1600         const char *name;
1601 } fw_capa_map[] = {
1602         { ATH6KL_FW_CAPABILITY_HOST_P2P, "host-p2p" },
1603         { ATH6KL_FW_CAPABILITY_SCHED_SCAN, "sched-scan" },
1604         { ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX, "sta-p2pdev-duplex" },
1605         { ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT, "inactivity-timeout" },
1606         { ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE, "rsn-cap-override" },
1607         { ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER, "wow-mc-filter" },
1608         { ATH6KL_FW_CAPABILITY_BMISS_ENHANCE, "bmiss-enhance" },
1609         { ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST, "sscan-match-list" },
1610         { ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD, "rssi-scan-thold" },
1611         { ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR, "custom-mac-addr" },
1612         { ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, "tx-err-notify" },
1613         { ATH6KL_FW_CAPABILITY_REGDOMAIN, "regdomain" },
1614         { ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, "sched-scan-v2" },
1615         { ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL, "hb-poll" },
1616         { ATH6KL_FW_CAPABILITY_64BIT_RATES, "64bit-rates" },
1617         { ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS, "ap-inactivity-mins" },
1618         { ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, "map-lp-endpoint" },
1619         { ATH6KL_FW_CAPABILITY_RATETABLE_MCS15, "ratetable-mcs15" },
1620         { ATH6KL_FW_CAPABILITY_NO_IP_CHECKSUM, "no-ip-checksum" },
1621 };
1622
1623 static const char *ath6kl_init_get_fw_capa_name(unsigned int id)
1624 {
1625         int i;
1626
1627         for (i = 0; i < ARRAY_SIZE(fw_capa_map); i++) {
1628                 if (fw_capa_map[i].id == id)
1629                         return fw_capa_map[i].name;
1630         }
1631
1632         return "<unknown>";
1633 }
1634
1635 static void ath6kl_init_get_fwcaps(struct ath6kl *ar, char *buf, size_t buf_len)
1636 {
1637         u8 *data = (u8 *) ar->fw_capabilities;
1638         size_t trunc_len, len = 0;
1639         int i, index, bit;
1640         char *trunc = "...";
1641
1642         for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
1643                 index = i / 8;
1644                 bit = i % 8;
1645
1646                 if (index >= sizeof(ar->fw_capabilities) * 4)
1647                         break;
1648
1649                 if (buf_len - len < 4) {
1650                         ath6kl_warn("firmware capability buffer too small!\n");
1651
1652                         /* add "..." to the end of string */
1653                         trunc_len = strlen(trunc) + 1;
1654                         strncpy(buf + buf_len - trunc_len, trunc, trunc_len);
1655
1656                         return;
1657                 }
1658
1659                 if (data[index] & (1 << bit)) {
1660                         len += scnprintf(buf + len, buf_len - len, "%s,",
1661                                             ath6kl_init_get_fw_capa_name(i));
1662                 }
1663         }
1664
1665         /* overwrite the last comma */
1666         if (len > 0)
1667                 len--;
1668
1669         buf[len] = '\0';
1670 }
1671
1672 static int ath6kl_init_hw_reset(struct ath6kl *ar)
1673 {
1674         ath6kl_dbg(ATH6KL_DBG_BOOT, "cold resetting the device");
1675
1676         return ath6kl_diag_write32(ar, RESET_CONTROL_ADDRESS,
1677                                    cpu_to_le32(RESET_CONTROL_COLD_RST));
1678 }
1679
1680 static int __ath6kl_init_hw_start(struct ath6kl *ar)
1681 {
1682         long timeleft;
1683         int ret, i;
1684         char buf[200];
1685
1686         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw start\n");
1687
1688         ret = ath6kl_hif_power_on(ar);
1689         if (ret)
1690                 return ret;
1691
1692         ret = ath6kl_configure_target(ar);
1693         if (ret)
1694                 goto err_power_off;
1695
1696         ret = ath6kl_init_upload(ar);
1697         if (ret)
1698                 goto err_power_off;
1699
1700         /* Do we need to finish the BMI phase */
1701         ret = ath6kl_bmi_done(ar);
1702         if (ret)
1703                 goto err_power_off;
1704
1705         /*
1706          * The reason we have to wait for the target here is that the
1707          * driver layer has to init BMI in order to set the host block
1708          * size.
1709          */
1710         ret = ath6kl_htc_wait_target(ar->htc_target);
1711
1712         if (ret == -ETIMEDOUT) {
1713                 /*
1714                  * Most likely USB target is in odd state after reboot and
1715                  * needs a reset. A cold reset makes the whole device
1716                  * disappear from USB bus and initialisation starts from
1717                  * beginning.
1718                  */
1719                 ath6kl_warn("htc wait target timed out, resetting device\n");
1720                 ath6kl_init_hw_reset(ar);
1721                 goto err_power_off;
1722         } else if (ret) {
1723                 ath6kl_err("htc wait target failed: %d\n", ret);
1724                 goto err_power_off;
1725         }
1726
1727         ret = ath6kl_init_service_ep(ar);
1728         if (ret) {
1729                 ath6kl_err("Endpoint service initilisation failed: %d\n", ret);
1730                 goto err_cleanup_scatter;
1731         }
1732
1733         /* setup credit distribution */
1734         ath6kl_htc_credit_setup(ar->htc_target, &ar->credit_state_info);
1735
1736         /* start HTC */
1737         ret = ath6kl_htc_start(ar->htc_target);
1738         if (ret) {
1739                 /* FIXME: call this */
1740                 ath6kl_cookie_cleanup(ar);
1741                 goto err_cleanup_scatter;
1742         }
1743
1744         /* Wait for Wmi event to be ready */
1745         timeleft = wait_event_interruptible_timeout(ar->event_wq,
1746                                                     test_bit(WMI_READY,
1747                                                              &ar->flag),
1748                                                     WMI_TIMEOUT);
1749         if (timeleft <= 0) {
1750                 clear_bit(WMI_READY, &ar->flag);
1751                 ath6kl_err("wmi is not ready or wait was interrupted: %ld\n",
1752                            timeleft);
1753                 ret = -EIO;
1754                 goto err_htc_stop;
1755         }
1756
1757         ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n");
1758
1759         if (test_and_clear_bit(FIRST_BOOT, &ar->flag)) {
1760                 ath6kl_info("%s %s fw %s api %d%s\n",
1761                             ar->hw.name,
1762                             ath6kl_init_get_hif_name(ar->hif_type),
1763                             ar->wiphy->fw_version,
1764                             ar->fw_api,
1765                             test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
1766                 ath6kl_init_get_fwcaps(ar, buf, sizeof(buf));
1767                 ath6kl_info("firmware supports: %s\n", buf);
1768         }
1769
1770         if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
1771                 ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n",
1772                            ATH6KL_ABI_VERSION, ar->version.abi_ver);
1773                 ret = -EIO;
1774                 goto err_htc_stop;
1775         }
1776
1777         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
1778
1779         /* communicate the wmi protocol verision to the target */
1780         /* FIXME: return error */
1781         if ((ath6kl_set_host_app_area(ar)) != 0)
1782                 ath6kl_err("unable to set the host app area\n");
1783
1784         for (i = 0; i < ar->vif_max; i++) {
1785                 ret = ath6kl_target_config_wlan_params(ar, i);
1786                 if (ret)
1787                         goto err_htc_stop;
1788         }
1789
1790         return 0;
1791
1792 err_htc_stop:
1793         ath6kl_htc_stop(ar->htc_target);
1794 err_cleanup_scatter:
1795         ath6kl_hif_cleanup_scatter(ar);
1796 err_power_off:
1797         ath6kl_hif_power_off(ar);
1798
1799         return ret;
1800 }
1801
1802 int ath6kl_init_hw_start(struct ath6kl *ar)
1803 {
1804         int err;
1805
1806         err = __ath6kl_init_hw_start(ar);
1807         if (err)
1808                 return err;
1809         ar->state = ATH6KL_STATE_ON;
1810         return 0;
1811 }
1812
1813 static int __ath6kl_init_hw_stop(struct ath6kl *ar)
1814 {
1815         int ret;
1816
1817         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw stop\n");
1818
1819         ath6kl_htc_stop(ar->htc_target);
1820
1821         ath6kl_hif_stop(ar);
1822
1823         ath6kl_bmi_reset(ar);
1824
1825         ret = ath6kl_hif_power_off(ar);
1826         if (ret)
1827                 ath6kl_warn("failed to power off hif: %d\n", ret);
1828
1829         return 0;
1830 }
1831
1832 int ath6kl_init_hw_stop(struct ath6kl *ar)
1833 {
1834         int err;
1835
1836         err = __ath6kl_init_hw_stop(ar);
1837         if (err)
1838                 return err;
1839         ar->state = ATH6KL_STATE_OFF;
1840         return 0;
1841 }
1842
1843 void ath6kl_init_hw_restart(struct ath6kl *ar)
1844 {
1845         clear_bit(WMI_READY, &ar->flag);
1846
1847         ath6kl_cfg80211_stop_all(ar);
1848
1849         if (__ath6kl_init_hw_stop(ar)) {
1850                 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to stop during fw error recovery\n");
1851                 return;
1852         }
1853
1854         if (__ath6kl_init_hw_start(ar)) {
1855                 ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n");
1856                 return;
1857         }
1858 }
1859
1860 void ath6kl_stop_txrx(struct ath6kl *ar)
1861 {
1862         struct ath6kl_vif *vif, *tmp_vif;
1863         int i;
1864
1865         set_bit(DESTROY_IN_PROGRESS, &ar->flag);
1866
1867         if (down_interruptible(&ar->sem)) {
1868                 ath6kl_err("down_interruptible failed\n");
1869                 return;
1870         }
1871
1872         for (i = 0; i < AP_MAX_NUM_STA; i++)
1873                 aggr_reset_state(ar->sta_list[i].aggr_conn);
1874
1875         spin_lock_bh(&ar->list_lock);
1876         list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) {
1877                 list_del(&vif->list);
1878                 spin_unlock_bh(&ar->list_lock);
1879                 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1880                 rtnl_lock();
1881                 ath6kl_cfg80211_vif_cleanup(vif);
1882                 rtnl_unlock();
1883                 spin_lock_bh(&ar->list_lock);
1884         }
1885         spin_unlock_bh(&ar->list_lock);
1886
1887         clear_bit(WMI_READY, &ar->flag);
1888
1889         if (ar->fw_recovery.enable)
1890                 del_timer_sync(&ar->fw_recovery.hb_timer);
1891
1892         /*
1893          * After wmi_shudown all WMI events will be dropped. We
1894          * need to cleanup the buffers allocated in AP mode and
1895          * give disconnect notification to stack, which usually
1896          * happens in the disconnect_event. Simulate the disconnect
1897          * event by calling the function directly. Sometimes
1898          * disconnect_event will be received when the debug logs
1899          * are collected.
1900          */
1901         ath6kl_wmi_shutdown(ar->wmi);
1902
1903         clear_bit(WMI_ENABLED, &ar->flag);
1904         if (ar->htc_target) {
1905                 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
1906                 ath6kl_htc_stop(ar->htc_target);
1907         }
1908
1909         /*
1910          * Try to reset the device if we can. The driver may have been
1911          * configure NOT to reset the target during a debug session.
1912          */
1913         ath6kl_init_hw_reset(ar);
1914
1915         up(&ar->sem);
1916 }
1917 EXPORT_SYMBOL(ath6kl_stop_txrx);