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

   1
   2 /*
   3  * Copyright (c) 2011 Atheros Communications Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include <linux/moduleparam.h>
  19 #include <linux/errno.h>
  20 #include <linux/of.h>
  21 #include <linux/mmc/sdio_func.h>
  22 #include "core.h"
  23 #include "cfg80211.h"
  24 #include "target.h"
  25 #include "debug.h"
  26 #include "hif-ops.h"
  27
  28 unsigned int debug_mask;
  29 static unsigned int testmode;
  30 static bool suspend_cutpower;
  31
  32 module_param(debug_mask, uint, 0644);
  33 module_param(testmode, uint, 0644);
  34 module_param(suspend_cutpower, bool, 0444);
  35
  36 static const struct ath6kl_hw hw_list[] = {
  37         {
  38                 .id                             = AR6003_REV2_VERSION,
  39                 .dataset_patch_addr             = 0x57e884,
  40                 .app_load_addr                  = 0x543180,
  41                 .board_ext_data_addr            = 0x57e500,
  42                 .reserved_ram_size              = 6912,
  43
  44                 /* hw2.0 needs override address hardcoded */
  45                 .app_start_override_addr        = 0x944C00,
  46         },
  47         {
  48                 .id                             = AR6003_REV3_VERSION,
  49                 .dataset_patch_addr             = 0x57ff74,
  50                 .app_load_addr                  = 0x1234,
  51                 .board_ext_data_addr            = 0x542330,
  52                 .reserved_ram_size              = 512,
  53         },
  54         {
  55                 .id                             = AR6004_REV1_VERSION,
  56                 .dataset_patch_addr             = 0x57e884,
  57                 .app_load_addr                  = 0x1234,
  58                 .board_ext_data_addr            = 0x437000,
  59                 .reserved_ram_size              = 19456,
  60         },
  61         {
  62                 .id                             = AR6004_REV2_VERSION,
  63                 .dataset_patch_addr             = 0x57e884,
  64                 .app_load_addr                  = 0x1234,
  65                 .board_ext_data_addr            = 0x437000,
  66                 .reserved_ram_size              = 11264,
  67         },
  68 };
  69
  70 /*
  71  * Include definitions here that can be used to tune the WLAN module
  72  * behavior. Different customers can tune the behavior as per their needs,
  73  * here.
  74  */
  75
  76 /*
  77  * This configuration item enable/disable keepalive support.
  78  * Keepalive support: In the absence of any data traffic to AP, null
  79  * frames will be sent to the AP at periodic interval, to keep the association
  80  * active. This configuration item defines the periodic interval.
  81  * Use value of zero to disable keepalive support
  82  * Default: 60 seconds
  83  */
  84 #define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60
  85
  86 /*
  87  * This configuration item sets the value of disconnect timeout
  88  * Firmware delays sending the disconnec event to the host for this
  89  * timeout after is gets disconnected from the current AP.
  90  * If the firmware successly roams within the disconnect timeout
  91  * it sends a new connect event
  92  */
  93 #define WLAN_CONFIG_DISCONNECT_TIMEOUT 10
  94
  95 #define CONFIG_AR600x_DEBUG_UART_TX_PIN 8
  96
  97 #define ATH6KL_DATA_OFFSET    64
  98 struct sk_buff *ath6kl_buf_alloc(int size)
  99 {
 100         struct sk_buff *skb;
 101         u16 reserved;
 102
 103         /* Add chacheline space at front and back of buffer */
 104         reserved = (2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET +
 105                    sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES;
 106         skb = dev_alloc_skb(size + reserved);
 107
 108         if (skb)
 109                 skb_reserve(skb, reserved - L1_CACHE_BYTES);
 110         return skb;
 111 }
 112
 113 void ath6kl_init_profile_info(struct ath6kl_vif *vif)
 114 {
 115         vif->ssid_len = 0;
 116         memset(vif->ssid, 0, sizeof(vif->ssid));
 117
 118         vif->dot11_auth_mode = OPEN_AUTH;
 119         vif->auth_mode = NONE_AUTH;
 120         vif->prwise_crypto = NONE_CRYPT;
 121         vif->prwise_crypto_len = 0;
 122         vif->grp_crypto = NONE_CRYPT;
 123         vif->grp_crypto_len = 0;
 124         memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
 125         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
 126         memset(vif->bssid, 0, sizeof(vif->bssid));
 127         vif->bss_ch = 0;
 128 }
 129
 130 static int ath6kl_set_host_app_area(struct ath6kl *ar)
 131 {
 132         u32 address, data;
 133         struct host_app_area host_app_area;
 134
 135         /* Fetch the address of the host_app_area_s
 136          * instance in the host interest area */
 137         address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest));
 138         address = TARG_VTOP(ar->target_type, address);
 139
 140         if (ath6kl_diag_read32(ar, address, &data))
 141                 return -EIO;
 142
 143         address = TARG_VTOP(ar->target_type, data);
 144         host_app_area.wmi_protocol_ver = cpu_to_le32(WMI_PROTOCOL_VERSION);
 145         if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area,
 146                               sizeof(struct host_app_area)))
 147                 return -EIO;
 148
 149         return 0;
 150 }
 151
 152 static inline void set_ac2_ep_map(struct ath6kl *ar,
 153                                   u8 ac,
 154                                   enum htc_endpoint_id ep)
 155 {
 156         ar->ac2ep_map[ac] = ep;
 157         ar->ep2ac_map[ep] = ac;
 158 }
 159
 160 /* connect to a service */
 161 static int ath6kl_connectservice(struct ath6kl *ar,
 162                                  struct htc_service_connect_req  *con_req,
 163                                  char *desc)
 164 {
 165         int status;
 166         struct htc_service_connect_resp response;
 167
 168         memset(&response, 0, sizeof(response));
 169
 170         status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response);
 171         if (status) {
 172                 ath6kl_err("failed to connect to %s service status:%d\n",
 173                            desc, status);
 174                 return status;
 175         }
 176
 177         switch (con_req->svc_id) {
 178         case WMI_CONTROL_SVC:
 179                 if (test_bit(WMI_ENABLED, &ar->flag))
 180                         ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint);
 181                 ar->ctrl_ep = response.endpoint;
 182                 break;
 183         case WMI_DATA_BE_SVC:
 184                 set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint);
 185                 break;
 186         case WMI_DATA_BK_SVC:
 187                 set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint);
 188                 break;
 189         case WMI_DATA_VI_SVC:
 190                 set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint);
 191                 break;
 192         case WMI_DATA_VO_SVC:
 193                 set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint);
 194                 break;
 195         default:
 196                 ath6kl_err("service id is not mapped %d\n", con_req->svc_id);
 197                 return -EINVAL;
 198         }
 199
 200         return 0;
 201 }
 202
 203 static int ath6kl_init_service_ep(struct ath6kl *ar)
 204 {
 205         struct htc_service_connect_req connect;
 206
 207         memset(&connect, 0, sizeof(connect));
 208
 209         /* these fields are the same for all service endpoints */
 210         connect.ep_cb.rx = ath6kl_rx;
 211         connect.ep_cb.rx_refill = ath6kl_rx_refill;
 212         connect.ep_cb.tx_full = ath6kl_tx_queue_full;
 213
 214         /*
 215          * Set the max queue depth so that our ath6kl_tx_queue_full handler
 216          * gets called.
 217         */
 218         connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH;
 219         connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4;
 220         if (!connect.ep_cb.rx_refill_thresh)
 221                 connect.ep_cb.rx_refill_thresh++;
 222
 223         /* connect to control service */
 224         connect.svc_id = WMI_CONTROL_SVC;
 225         if (ath6kl_connectservice(ar, &connect, "WMI CONTROL"))
 226                 return -EIO;
 227
 228         connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN;
 229
 230         /*
 231          * Limit the HTC message size on the send path, although e can
 232          * receive A-MSDU frames of 4K, we will only send ethernet-sized
 233          * (802.3) frames on the send path.
 234          */
 235         connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH;
 236
 237         /*
 238          * To reduce the amount of committed memory for larger A_MSDU
 239          * frames, use the recv-alloc threshold mechanism for larger
 240          * packets.
 241          */
 242         connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE;
 243         connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf;
 244
 245         /*
 246          * For the remaining data services set the connection flag to
 247          * reduce dribbling, if configured to do so.
 248          */
 249         connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB;
 250         connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK;
 251         connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF;
 252
 253         connect.svc_id = WMI_DATA_BE_SVC;
 254
 255         if (ath6kl_connectservice(ar, &connect, "WMI DATA BE"))
 256                 return -EIO;
 257
 258         /* connect to back-ground map this to WMI LOW_PRI */
 259         connect.svc_id = WMI_DATA_BK_SVC;
 260         if (ath6kl_connectservice(ar, &connect, "WMI DATA BK"))
 261                 return -EIO;
 262
 263         /* connect to Video service, map this to to HI PRI */
 264         connect.svc_id = WMI_DATA_VI_SVC;
 265         if (ath6kl_connectservice(ar, &connect, "WMI DATA VI"))
 266                 return -EIO;
 267
 268         /*
 269          * Connect to VO service, this is currently not mapped to a WMI
 270          * priority stream due to historical reasons. WMI originally
 271          * defined 3 priorities over 3 mailboxes We can change this when
 272          * WMI is reworked so that priorities are not dependent on
 273          * mailboxes.
 274          */
 275         connect.svc_id = WMI_DATA_VO_SVC;
 276         if (ath6kl_connectservice(ar, &connect, "WMI DATA VO"))
 277                 return -EIO;
 278
 279         return 0;
 280 }
 281
 282 void ath6kl_init_control_info(struct ath6kl_vif *vif)
 283 {
 284         ath6kl_init_profile_info(vif);
 285         vif->def_txkey_index = 0;
 286         memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list));
 287         vif->ch_hint = 0;
 288 }
 289
 290 /*
 291  * Set HTC/Mbox operational parameters, this can only be called when the
 292  * target is in the BMI phase.
 293  */
 294 static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val,
 295                                  u8 htc_ctrl_buf)
 296 {
 297         int status;
 298         u32 blk_size;
 299
 300         blk_size = ar->mbox_info.block_size;
 301
 302         if (htc_ctrl_buf)
 303                 blk_size |=  ((u32)htc_ctrl_buf) << 16;
 304
 305         /* set the host interest area for the block size */
 306         status = ath6kl_bmi_write(ar,
 307                         ath6kl_get_hi_item_addr(ar,
 308                         HI_ITEM(hi_mbox_io_block_sz)),
 309                         (u8 *)&blk_size,
 310                         4);
 311         if (status) {
 312                 ath6kl_err("bmi_write_memory for IO block size failed\n");
 313                 goto out;
 314         }
 315
 316         ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n",
 317                    blk_size,
 318                    ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)));
 319
 320         if (mbox_isr_yield_val) {
 321                 /* set the host interest area for the mbox ISR yield limit */
 322                 status = ath6kl_bmi_write(ar,
 323                                 ath6kl_get_hi_item_addr(ar,
 324                                 HI_ITEM(hi_mbox_isr_yield_limit)),
 325                                 (u8 *)&mbox_isr_yield_val,
 326                                 4);
 327                 if (status) {
 328                         ath6kl_err("bmi_write_memory for yield limit failed\n");
 329                         goto out;
 330                 }
 331         }
 332
 333 out:
 334         return status;
 335 }
 336
 337 static int ath6kl_target_config_wlan_params(struct ath6kl *ar, int idx)
 338 {
 339         int status = 0;
 340         int ret;
 341
 342         /*
 343          * Configure the device for rx dot11 header rules. "0,0" are the
 344          * default values. Required if checksum offload is needed. Set
 345          * RxMetaVersion to 2.
 346          */
 347         if (ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, idx,
 348                                                ar->rx_meta_ver, 0, 0)) {
 349                 ath6kl_err("unable to set the rx frame format\n");
 350                 status = -EIO;
 351         }
 352
 353         if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN)
 354                 if ((ath6kl_wmi_pmparams_cmd(ar->wmi, idx, 0, 1, 0, 0, 1,
 355                      IGNORE_POWER_SAVE_FAIL_EVENT_DURING_SCAN)) != 0) {
 356                         ath6kl_err("unable to set power save fail event policy\n");
 357                         status = -EIO;
 358                 }
 359
 360         if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER))
 361                 if ((ath6kl_wmi_set_lpreamble_cmd(ar->wmi, idx, 0,
 362                      WMI_DONOT_IGNORE_BARKER_IN_ERP)) != 0) {
 363                         ath6kl_err("unable to set barker preamble policy\n");
 364                         status = -EIO;
 365                 }
 366
 367         if (ath6kl_wmi_set_keepalive_cmd(ar->wmi, idx,
 368                         WLAN_CONFIG_KEEP_ALIVE_INTERVAL)) {
 369                 ath6kl_err("unable to set keep alive interval\n");
 370                 status = -EIO;
 371         }
 372
 373         if (ath6kl_wmi_disctimeout_cmd(ar->wmi, idx,
 374                         WLAN_CONFIG_DISCONNECT_TIMEOUT)) {
 375                 ath6kl_err("unable to set disconnect timeout\n");
 376                 status = -EIO;
 377         }
 378
 379         if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST))
 380                 if (ath6kl_wmi_set_wmm_txop(ar->wmi, idx, WMI_TXOP_DISABLED)) {
 381                         ath6kl_err("unable to set txop bursting\n");
 382                         status = -EIO;
 383                 }
 384
 385         /*
 386          * FIXME: Make sure p2p configurations are not applied to
 387          * non-p2p capable interfaces when multivif support is enabled.
 388          */
 389         if (ar->p2p) {
 390                 ret = ath6kl_wmi_info_req_cmd(ar->wmi, idx,
 391                                               P2P_FLAG_CAPABILITIES_REQ |
 392                                               P2P_FLAG_MACADDR_REQ |
 393                                               P2P_FLAG_HMODEL_REQ);
 394                 if (ret) {
 395                         ath6kl_dbg(ATH6KL_DBG_TRC, "failed to request P2P "
 396                                    "capabilities (%d) - assuming P2P not "
 397                                    "supported\n", ret);
 398                         ar->p2p = 0;
 399                 }
 400         }
 401
 402         /*
 403          * FIXME: Make sure p2p configurations are not applied to
 404          * non-p2p capable interfaces when multivif support is enabled.
 405          */
 406         if (ar->p2p) {
 407                 /* Enable Probe Request reporting for P2P */
 408                 ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, idx, true);
 409                 if (ret) {
 410                         ath6kl_dbg(ATH6KL_DBG_TRC, "failed to enable Probe "
 411                                    "Request reporting (%d)\n", ret);
 412                 }
 413         }
 414
 415         return status;
 416 }
 417
 418 int ath6kl_configure_target(struct ath6kl *ar)
 419 {
 420         u32 param, ram_reserved_size;
 421         u8 fw_iftype, fw_mode = 0, fw_submode = 0;
 422         int i;
 423
 424         /*
 425          * Note: Even though the firmware interface type is
 426          * chosen as BSS_STA for all three interfaces, can
 427          * be configured to IBSS/AP as long as the fw submode
 428          * remains normal mode (0 - AP, STA and IBSS). But
 429          * due to an target assert in firmware only one interface is
 430          * configured for now.
 431          */
 432         fw_iftype = HI_OPTION_FW_MODE_BSS_STA;
 433
 434         for (i = 0; i < MAX_NUM_VIF; i++)
 435                 fw_mode |= fw_iftype << (i * HI_OPTION_FW_MODE_BITS);
 436
 437         /*
 438          * By default, submodes :
 439          *              vif[0] - AP/STA/IBSS
 440          *              vif[1] - "P2P dev"/"P2P GO"/"P2P Client"
 441          *              vif[2] - "P2P dev"/"P2P GO"/"P2P Client"
 442          */
 443
 444         for (i = 0; i < ar->max_norm_iface; i++)
 445                 fw_submode |= HI_OPTION_FW_SUBMODE_NONE <<
 446                               (i * HI_OPTION_FW_SUBMODE_BITS);
 447
 448         for (i = ar->max_norm_iface; i < MAX_NUM_VIF; i++)
 449                 fw_submode |= HI_OPTION_FW_SUBMODE_P2PDEV <<
 450                               (i * HI_OPTION_FW_SUBMODE_BITS);
 451
 452         /*
 453          * FIXME: This needs to be removed once the multivif
 454          * support is enabled.
 455          */
 456         if (ar->p2p)
 457                 fw_submode = HI_OPTION_FW_SUBMODE_P2PDEV;
 458
 459         param = HTC_PROTOCOL_VERSION;
 460         if (ath6kl_bmi_write(ar,
 461                              ath6kl_get_hi_item_addr(ar,
 462                              HI_ITEM(hi_app_host_interest)),
 463                              (u8 *)&param, 4) != 0) {
 464                 ath6kl_err("bmi_write_memory for htc version failed\n");
 465                 return -EIO;
 466         }
 467
 468         /* set the firmware mode to STA/IBSS/AP */
 469         param = 0;
 470
 471         if (ath6kl_bmi_read(ar,
 472                             ath6kl_get_hi_item_addr(ar,
 473                             HI_ITEM(hi_option_flag)),
 474                             (u8 *)&param, 4) != 0) {
 475                 ath6kl_err("bmi_read_memory for setting fwmode failed\n");
 476                 return -EIO;
 477         }
 478
 479         param |= (MAX_NUM_VIF << HI_OPTION_NUM_DEV_SHIFT);
 480         param |= fw_mode << HI_OPTION_FW_MODE_SHIFT;
 481         param |= fw_submode << HI_OPTION_FW_SUBMODE_SHIFT;
 482
 483         param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
 484         param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
 485
 486         if (ath6kl_bmi_write(ar,
 487                              ath6kl_get_hi_item_addr(ar,
 488                              HI_ITEM(hi_option_flag)),
 489                              (u8 *)&param,
 490                              4) != 0) {
 491                 ath6kl_err("bmi_write_memory for setting fwmode failed\n");
 492                 return -EIO;
 493         }
 494
 495         ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n");
 496
 497         /*
 498          * Hardcode the address use for the extended board data
 499          * Ideally this should be pre-allocate by the OS at boot time
 500          * But since it is a new feature and board data is loaded
 501          * at init time, we have to workaround this from host.
 502          * It is difficult to patch the firmware boot code,
 503          * but possible in theory.
 504          */
 505
 506         param = ar->hw.board_ext_data_addr;
 507         ram_reserved_size = ar->hw.reserved_ram_size;
 508
 509         if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar,
 510                                         HI_ITEM(hi_board_ext_data)),
 511                              (u8 *)&param, 4) != 0) {
 512                 ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n");
 513                 return -EIO;
 514         }
 515
 516         if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar,
 517                                         HI_ITEM(hi_end_ram_reserve_sz)),
 518                              (u8 *)&ram_reserved_size, 4) != 0) {
 519                 ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n");
 520                 return -EIO;
 521         }
 522
 523         /* set the block size for the target */
 524         if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0))
 525                 /* use default number of control buffers */
 526                 return -EIO;
 527
 528         return 0;
 529 }
 530
 531 void ath6kl_core_free(struct ath6kl *ar)
 532 {
 533         wiphy_free(ar->wiphy);
 534 }
 535
 536 void ath6kl_core_cleanup(struct ath6kl *ar)
 537 {
 538         ath6kl_hif_power_off(ar);
 539
 540         destroy_workqueue(ar->ath6kl_wq);
 541
 542         if (ar->htc_target)
 543                 ath6kl_htc_cleanup(ar->htc_target);
 544
 545         ath6kl_cookie_cleanup(ar);
 546
 547         ath6kl_cleanup_amsdu_rxbufs(ar);
 548
 549         ath6kl_bmi_cleanup(ar);
 550
 551         ath6kl_debug_cleanup(ar);
 552
 553         kfree(ar->fw_board);
 554         kfree(ar->fw_otp);
 555         kfree(ar->fw);
 556         kfree(ar->fw_patch);
 557
 558         ath6kl_deinit_ieee80211_hw(ar);
 559 }
 560
 561 /* firmware upload */
 562 static int ath6kl_get_fw(struct ath6kl *ar, const char *filename,
 563                          u8 **fw, size_t *fw_len)
 564 {
 565         const struct firmware *fw_entry;
 566         int ret;
 567
 568         ret = request_firmware(&fw_entry, filename, ar->dev);
 569         if (ret)
 570                 return ret;
 571
 572         *fw_len = fw_entry->size;
 573         *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL);
 574
 575         if (*fw == NULL)
 576                 ret = -ENOMEM;
 577
 578         release_firmware(fw_entry);
 579
 580         return ret;
 581 }
 582
 583 #ifdef CONFIG_OF
 584 static const char *get_target_ver_dir(const struct ath6kl *ar)
 585 {
 586         switch (ar->version.target_ver) {
 587         case AR6003_REV1_VERSION:
 588                 return "ath6k/AR6003/hw1.0";
 589         case AR6003_REV2_VERSION:
 590                 return "ath6k/AR6003/hw2.0";
 591         case AR6003_REV3_VERSION:
 592                 return "ath6k/AR6003/hw2.1.1";
 593         }
 594         ath6kl_warn("%s: unsupported target version 0x%x.\n", __func__,
 595                     ar->version.target_ver);
 596         return NULL;
 597 }
 598
 599 /*
 600  * Check the device tree for a board-id and use it to construct
 601  * the pathname to the firmware file.  Used (for now) to find a
 602  * fallback to the "bdata.bin" file--typically a symlink to the
 603  * appropriate board-specific file.
 604  */
 605 static bool check_device_tree(struct ath6kl *ar)
 606 {
 607         static const char *board_id_prop = "atheros,board-id";
 608         struct device_node *node;
 609         char board_filename[64];
 610         const char *board_id;
 611         int ret;
 612
 613         for_each_compatible_node(node, NULL, "atheros,ath6kl") {
 614                 board_id = of_get_property(node, board_id_prop, NULL);
 615                 if (board_id == NULL) {
 616                         ath6kl_warn("No \"%s\" property on %s node.\n",
 617                                     board_id_prop, node->name);
 618                         continue;
 619                 }
 620                 snprintf(board_filename, sizeof(board_filename),
 621                          "%s/bdata.%s.bin", get_target_ver_dir(ar), board_id);
 622
 623                 ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board,
 624                                     &ar->fw_board_len);
 625                 if (ret) {
 626                         ath6kl_err("Failed to get DT board file %s: %d\n",
 627                                    board_filename, ret);
 628                         continue;
 629                 }
 630                 return true;
 631         }
 632         return false;
 633 }
 634 #else
 635 static bool check_device_tree(struct ath6kl *ar)
 636 {
 637         return false;
 638 }
 639 #endif /* CONFIG_OF */
 640
 641 static int ath6kl_fetch_board_file(struct ath6kl *ar)
 642 {
 643         const char *filename;
 644         int ret;
 645
 646         if (ar->fw_board != NULL)
 647                 return 0;
 648
 649         switch (ar->version.target_ver) {
 650         case AR6003_REV2_VERSION:
 651                 filename = AR6003_REV2_BOARD_DATA_FILE;
 652                 break;
 653         case AR6004_REV1_VERSION:
 654                 filename = AR6004_REV1_BOARD_DATA_FILE;
 655                 break;
 656         default:
 657                 filename = AR6003_REV3_BOARD_DATA_FILE;
 658                 break;
 659         }
 660
 661         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 662                             &ar->fw_board_len);
 663         if (ret == 0) {
 664                 /* managed to get proper board file */
 665                 return 0;
 666         }
 667
 668         if (check_device_tree(ar)) {
 669                 /* got board file from device tree */
 670                 return 0;
 671         }
 672
 673         /* there was no proper board file, try to use default instead */
 674         ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n",
 675                     filename, ret);
 676
 677         switch (ar->version.target_ver) {
 678         case AR6003_REV2_VERSION:
 679                 filename = AR6003_REV2_DEFAULT_BOARD_DATA_FILE;
 680                 break;
 681         case AR6004_REV1_VERSION:
 682                 filename = AR6004_REV1_DEFAULT_BOARD_DATA_FILE;
 683                 break;
 684         default:
 685                 filename = AR6003_REV3_DEFAULT_BOARD_DATA_FILE;
 686                 break;
 687         }
 688
 689         ret = ath6kl_get_fw(ar, filename, &ar->fw_board,
 690                             &ar->fw_board_len);
 691         if (ret) {
 692                 ath6kl_err("Failed to get default board file %s: %d\n",
 693                            filename, ret);
 694                 return ret;
 695         }
 696
 697         ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n");
 698         ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n");
 699
 700         return 0;
 701 }
 702
 703 static int ath6kl_fetch_otp_file(struct ath6kl *ar)
 704 {
 705         const char *filename;
 706         int ret;
 707
 708         if (ar->fw_otp != NULL)
 709                 return 0;
 710
 711         switch (ar->version.target_ver) {
 712         case AR6003_REV2_VERSION:
 713                 filename = AR6003_REV2_OTP_FILE;
 714                 break;
 715         case AR6004_REV1_VERSION:
 716                 ath6kl_dbg(ATH6KL_DBG_TRC, "AR6004 doesn't need OTP file\n");
 717                 return 0;
 718                 break;
 719         default:
 720                 filename = AR6003_REV3_OTP_FILE;
 721                 break;
 722         }
 723
 724         ret = ath6kl_get_fw(ar, filename, &ar->fw_otp,
 725                             &ar->fw_otp_len);
 726         if (ret) {
 727                 ath6kl_err("Failed to get OTP file %s: %d\n",
 728                            filename, ret);
 729                 return ret;
 730         }
 731
 732         return 0;
 733 }
 734
 735 static int ath6kl_fetch_fw_file(struct ath6kl *ar)
 736 {
 737         const char *filename;
 738         int ret;
 739
 740         if (ar->fw != NULL)
 741                 return 0;
 742
 743         if (testmode) {
 744                 switch (ar->version.target_ver) {
 745                 case AR6003_REV2_VERSION:
 746                         filename = AR6003_REV2_TCMD_FIRMWARE_FILE;
 747                         break;
 748                 case AR6003_REV3_VERSION:
 749                         filename = AR6003_REV3_TCMD_FIRMWARE_FILE;
 750                         break;
 751                 case AR6004_REV1_VERSION:
 752                         ath6kl_warn("testmode not supported with ar6004\n");
 753                         return -EOPNOTSUPP;
 754                 default:
 755                         ath6kl_warn("unknown target version: 0x%x\n",
 756                                        ar->version.target_ver);
 757                         return -EINVAL;
 758                 }
 759
 760                 set_bit(TESTMODE, &ar->flag);
 761
 762                 goto get_fw;
 763         }
 764
 765         switch (ar->version.target_ver) {
 766         case AR6003_REV2_VERSION:
 767                 filename = AR6003_REV2_FIRMWARE_FILE;
 768                 break;
 769         case AR6004_REV1_VERSION:
 770                 filename = AR6004_REV1_FIRMWARE_FILE;
 771                 break;
 772         default:
 773                 filename = AR6003_REV3_FIRMWARE_FILE;
 774                 break;
 775         }
 776
 777 get_fw:
 778         ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len);
 779         if (ret) {
 780                 ath6kl_err("Failed to get firmware file %s: %d\n",
 781                            filename, ret);
 782                 return ret;
 783         }
 784
 785         return 0;
 786 }
 787
 788 static int ath6kl_fetch_patch_file(struct ath6kl *ar)
 789 {
 790         const char *filename;
 791         int ret;
 792
 793         switch (ar->version.target_ver) {
 794         case AR6003_REV2_VERSION:
 795                 filename = AR6003_REV2_PATCH_FILE;
 796                 break;
 797         case AR6004_REV1_VERSION:
 798                 /* FIXME: implement for AR6004 */
 799                 return 0;
 800                 break;
 801         default:
 802                 filename = AR6003_REV3_PATCH_FILE;
 803                 break;
 804         }
 805
 806         if (ar->fw_patch == NULL) {
 807                 ret = ath6kl_get_fw(ar, filename, &ar->fw_patch,
 808                                     &ar->fw_patch_len);
 809                 if (ret) {
 810                         ath6kl_err("Failed to get patch file %s: %d\n",
 811                                    filename, ret);
 812                         return ret;
 813                 }
 814         }
 815
 816         return 0;
 817 }
 818
 819 static int ath6kl_fetch_fw_api1(struct ath6kl *ar)
 820 {
 821         int ret;
 822
 823         ret = ath6kl_fetch_otp_file(ar);
 824         if (ret)
 825                 return ret;
 826
 827         ret = ath6kl_fetch_fw_file(ar);
 828         if (ret)
 829                 return ret;
 830
 831         ret = ath6kl_fetch_patch_file(ar);
 832         if (ret)
 833                 return ret;
 834
 835         return 0;
 836 }
 837
 838 static int ath6kl_fetch_fw_api2(struct ath6kl *ar)
 839 {
 840         size_t magic_len, len, ie_len;
 841         const struct firmware *fw;
 842         struct ath6kl_fw_ie *hdr;
 843         const char *filename;
 844         const u8 *data;
 845         int ret, ie_id, i, index, bit;
 846         __le32 *val;
 847
 848         switch (ar->version.target_ver) {
 849         case AR6003_REV2_VERSION:
 850                 filename = AR6003_REV2_FIRMWARE_2_FILE;
 851                 break;
 852         case AR6003_REV3_VERSION:
 853                 filename = AR6003_REV3_FIRMWARE_2_FILE;
 854                 break;
 855         case AR6004_REV1_VERSION:
 856                 filename = AR6004_REV1_FIRMWARE_2_FILE;
 857                 break;
 858         case AR6004_REV2_VERSION:
 859                 filename = AR6004_REV2_FIRMWARE_2_FILE;
 860                 break;
 861         default:
 862                 return -EOPNOTSUPP;
 863         }
 864
 865         ret = request_firmware(&fw, filename, ar->dev);
 866         if (ret)
 867                 return ret;
 868
 869         data = fw->data;
 870         len = fw->size;
 871
 872         /* magic also includes the null byte, check that as well */
 873         magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1;
 874
 875         if (len < magic_len) {
 876                 ret = -EINVAL;
 877                 goto out;
 878         }
 879
 880         if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) {
 881                 ret = -EINVAL;
 882                 goto out;
 883         }
 884
 885         len -= magic_len;
 886         data += magic_len;
 887
 888         /* loop elements */
 889         while (len > sizeof(struct ath6kl_fw_ie)) {
 890                 /* hdr is unaligned! */
 891                 hdr = (struct ath6kl_fw_ie *) data;
 892
 893                 ie_id = le32_to_cpup(&hdr->id);
 894                 ie_len = le32_to_cpup(&hdr->len);
 895
 896                 len -= sizeof(*hdr);
 897                 data += sizeof(*hdr);
 898
 899                 if (len < ie_len) {
 900                         ret = -EINVAL;
 901                         goto out;
 902                 }
 903
 904                 switch (ie_id) {
 905                 case ATH6KL_FW_IE_OTP_IMAGE:
 906                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n",
 907                                 ie_len);
 908
 909                         ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL);
 910
 911                         if (ar->fw_otp == NULL) {
 912                                 ret = -ENOMEM;
 913                                 goto out;
 914                         }
 915
 916                         ar->fw_otp_len = ie_len;
 917                         break;
 918                 case ATH6KL_FW_IE_FW_IMAGE:
 919                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n",
 920                                 ie_len);
 921
 922                         ar->fw = kmemdup(data, ie_len, GFP_KERNEL);
 923
 924                         if (ar->fw == NULL) {
 925                                 ret = -ENOMEM;
 926                                 goto out;
 927                         }
 928
 929                         ar->fw_len = ie_len;
 930                         break;
 931                 case ATH6KL_FW_IE_PATCH_IMAGE:
 932                         ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n",
 933                                 ie_len);
 934
 935                         ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL);
 936
 937                         if (ar->fw_patch == NULL) {
 938                                 ret = -ENOMEM;
 939                                 goto out;
 940                         }
 941
 942                         ar->fw_patch_len = ie_len;
 943                         break;
 944                 case ATH6KL_FW_IE_RESERVED_RAM_SIZE:
 945                         val = (__le32 *) data;
 946                         ar->hw.reserved_ram_size = le32_to_cpup(val);
 947
 948                         ath6kl_dbg(ATH6KL_DBG_BOOT,
 949                                    "found reserved ram size ie 0x%d\n",
 950                                    ar->hw.reserved_ram_size);
 951                         break;
 952                 case ATH6KL_FW_IE_CAPABILITIES:
 953                         ath6kl_dbg(ATH6KL_DBG_BOOT,
 954                                    "found firmware capabilities ie (%zd B)\n",
 955                                    ie_len);
 956
 957                         for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) {
 958                                 index = ALIGN(i, 8) / 8;
 959                                 bit = i % 8;
 960
 961                                 if (data[index] & (1 << bit))
 962                                         __set_bit(i, ar->fw_capabilities);
 963                         }
 964
 965                         ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "",
 966                                         ar->fw_capabilities,
 967                                         sizeof(ar->fw_capabilities));
 968                         break;
 969                 case ATH6KL_FW_IE_PATCH_ADDR:
 970                         if (ie_len != sizeof(*val))
 971                                 break;
 972
 973                         val = (__le32 *) data;
 974                         ar->hw.dataset_patch_addr = le32_to_cpup(val);
 975
 976                         ath6kl_dbg(ATH6KL_DBG_BOOT,
 977                                    "found patch address ie 0x%d\n",
 978                                    ar->hw.dataset_patch_addr);
 979                         break;
 980                 default:
 981                         ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n",
 982                                    le32_to_cpup(&hdr->id));
 983                         break;
 984                 }
 985
 986                 len -= ie_len;
 987                 data += ie_len;
 988         };
 989
 990         ret = 0;
 991 out:
 992         release_firmware(fw);
 993
 994         return ret;
 995 }
 996
 997 static int ath6kl_fetch_firmwares(struct ath6kl *ar)
 998 {
 999         int ret;
1000
1001         ret = ath6kl_fetch_board_file(ar);
1002         if (ret)
1003                 return ret;
1004
1005         ret = ath6kl_fetch_fw_api2(ar);
1006         if (ret == 0) {
1007                 ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api 2\n");
1008                 return 0;
1009         }
1010
1011         ret = ath6kl_fetch_fw_api1(ar);
1012         if (ret)
1013                 return ret;
1014
1015         ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api 1\n");
1016
1017         return 0;
1018 }
1019
1020 static int ath6kl_upload_board_file(struct ath6kl *ar)
1021 {
1022         u32 board_address, board_ext_address, param;
1023         u32 board_data_size, board_ext_data_size;
1024         int ret;
1025
1026         if (WARN_ON(ar->fw_board == NULL))
1027                 return -ENOENT;
1028
1029         /*
1030          * Determine where in Target RAM to write Board Data.
1031          * For AR6004, host determine Target RAM address for
1032          * writing board data.
1033          */
1034         if (ar->target_type == TARGET_TYPE_AR6004) {
1035                 if (ar->version.target_ver == AR6004_REV1_VERSION)
1036                         board_address = AR6004_REV1_BOARD_DATA_ADDRESS;
1037                 else
1038                         board_address = AR6004_REV2_BOARD_DATA_ADDRESS;
1039
1040                 ath6kl_bmi_write(ar,
1041                                 ath6kl_get_hi_item_addr(ar,
1042                                 HI_ITEM(hi_board_data)),
1043                                 (u8 *) &board_address, 4);
1044         } else {
1045                 ath6kl_bmi_read(ar,
1046                                 ath6kl_get_hi_item_addr(ar,
1047                                 HI_ITEM(hi_board_data)),
1048                                 (u8 *) &board_address, 4);
1049         }
1050
1051         /* determine where in target ram to write extended board data */
1052         ath6kl_bmi_read(ar,
1053                         ath6kl_get_hi_item_addr(ar,
1054                         HI_ITEM(hi_board_ext_data)),
1055                         (u8 *) &board_ext_address, 4);
1056
1057         if (ar->target_type == TARGET_TYPE_AR6003 &&
1058             board_ext_address == 0) {
1059                 ath6kl_err("Failed to get board file target address.\n");
1060                 return -EINVAL;
1061         }
1062
1063         switch (ar->target_type) {
1064         case TARGET_TYPE_AR6003:
1065                 board_data_size = AR6003_BOARD_DATA_SZ;
1066                 board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ;
1067                 break;
1068         case TARGET_TYPE_AR6004:
1069                 board_data_size = AR6004_BOARD_DATA_SZ;
1070                 board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ;
1071                 break;
1072         default:
1073                 WARN_ON(1);
1074                 return -EINVAL;
1075                 break;
1076         }
1077
1078         if (board_ext_address &&
1079             ar->fw_board_len == (board_data_size + board_ext_data_size)) {
1080
1081                 /* write extended board data */
1082                 ath6kl_dbg(ATH6KL_DBG_BOOT,
1083                            "writing extended board data to 0x%x (%d B)\n",
1084                            board_ext_address, board_ext_data_size);
1085
1086                 ret = ath6kl_bmi_write(ar, board_ext_address,
1087                                        ar->fw_board + board_data_size,
1088                                        board_ext_data_size);
1089                 if (ret) {
1090                         ath6kl_err("Failed to write extended board data: %d\n",
1091                                    ret);
1092                         return ret;
1093                 }
1094
1095                 /* record that extended board data is initialized */
1096                 param = (board_ext_data_size << 16) | 1;
1097
1098                 ath6kl_bmi_write(ar,
1099                                  ath6kl_get_hi_item_addr(ar,
1100                                  HI_ITEM(hi_board_ext_data_config)),
1101                                  (unsigned char *) &param, 4);
1102         }
1103
1104         if (ar->fw_board_len < board_data_size) {
1105                 ath6kl_err("Too small board file: %zu\n", ar->fw_board_len);
1106                 ret = -EINVAL;
1107                 return ret;
1108         }
1109
1110         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n",
1111                    board_address, board_data_size);
1112
1113         ret = ath6kl_bmi_write(ar, board_address, ar->fw_board,
1114                                board_data_size);
1115
1116         if (ret) {
1117                 ath6kl_err("Board file bmi write failed: %d\n", ret);
1118                 return ret;
1119         }
1120
1121         /* record the fact that Board Data IS initialized */
1122         param = 1;
1123         ath6kl_bmi_write(ar,
1124                          ath6kl_get_hi_item_addr(ar,
1125                          HI_ITEM(hi_board_data_initialized)),
1126                          (u8 *)&param, 4);
1127
1128         return ret;
1129 }
1130
1131 static int ath6kl_upload_otp(struct ath6kl *ar)
1132 {
1133         u32 address, param;
1134         bool from_hw = false;
1135         int ret;
1136
1137         if (ar->fw_otp == NULL)
1138                 return 0;
1139
1140         address = ar->hw.app_load_addr;
1141
1142         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address,
1143                    ar->fw_otp_len);
1144
1145         ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp,
1146                                        ar->fw_otp_len);
1147         if (ret) {
1148                 ath6kl_err("Failed to upload OTP file: %d\n", ret);
1149                 return ret;
1150         }
1151
1152         /* read firmware start address */
1153         ret = ath6kl_bmi_read(ar,
1154                               ath6kl_get_hi_item_addr(ar,
1155                                                       HI_ITEM(hi_app_start)),
1156                               (u8 *) &address, sizeof(address));
1157
1158         if (ret) {
1159                 ath6kl_err("Failed to read hi_app_start: %d\n", ret);
1160                 return ret;
1161         }
1162
1163         if (ar->hw.app_start_override_addr == 0) {
1164                 ar->hw.app_start_override_addr = address;
1165                 from_hw = true;
1166         }
1167
1168         ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n",
1169                    from_hw ? " (from hw)" : "",
1170                    ar->hw.app_start_override_addr);
1171
1172         /* execute the OTP code */
1173         ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n",
1174                    ar->hw.app_start_override_addr);
1175         param = 0;
1176         ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, &param);
1177
1178         return ret;
1179 }
1180
1181 static int ath6kl_upload_firmware(struct ath6kl *ar)
1182 {
1183         u32 address;
1184         int ret;
1185
1186         if (WARN_ON(ar->fw == NULL))
1187                 return 0;
1188
1189         address = ar->hw.app_load_addr;
1190
1191         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n",
1192                    address, ar->fw_len);
1193
1194         ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len);
1195
1196         if (ret) {
1197                 ath6kl_err("Failed to write firmware: %d\n", ret);
1198                 return ret;
1199         }
1200
1201         /*
1202          * Set starting address for firmware
1203          * Don't need to setup app_start override addr on AR6004
1204          */
1205         if (ar->target_type != TARGET_TYPE_AR6004) {
1206                 address = ar->hw.app_start_override_addr;
1207                 ath6kl_bmi_set_app_start(ar, address);
1208         }
1209         return ret;
1210 }
1211
1212 static int ath6kl_upload_patch(struct ath6kl *ar)
1213 {
1214         u32 address, param;
1215         int ret;
1216
1217         if (ar->fw_patch == NULL)
1218                 return 0;
1219
1220         address = ar->hw.dataset_patch_addr;
1221
1222         ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n",
1223                    address, ar->fw_patch_len);
1224
1225         ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len);
1226         if (ret) {
1227                 ath6kl_err("Failed to write patch file: %d\n", ret);
1228                 return ret;
1229         }
1230
1231         param = address;
1232         ath6kl_bmi_write(ar,
1233                          ath6kl_get_hi_item_addr(ar,
1234                          HI_ITEM(hi_dset_list_head)),
1235                          (unsigned char *) &param, 4);
1236
1237         return 0;
1238 }
1239
1240 static int ath6kl_init_upload(struct ath6kl *ar)
1241 {
1242         u32 param, options, sleep, address;
1243         int status = 0;
1244
1245         if (ar->target_type != TARGET_TYPE_AR6003 &&
1246                 ar->target_type != TARGET_TYPE_AR6004)
1247                 return -EINVAL;
1248
1249         /* temporarily disable system sleep */
1250         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1251         status = ath6kl_bmi_reg_read(ar, address, &param);
1252         if (status)
1253                 return status;
1254
1255         options = param;
1256
1257         param |= ATH6KL_OPTION_SLEEP_DISABLE;
1258         status = ath6kl_bmi_reg_write(ar, address, param);
1259         if (status)
1260                 return status;
1261
1262         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1263         status = ath6kl_bmi_reg_read(ar, address, &param);
1264         if (status)
1265                 return status;
1266
1267         sleep = param;
1268
1269         param |= SM(SYSTEM_SLEEP_DISABLE, 1);
1270         status = ath6kl_bmi_reg_write(ar, address, param);
1271         if (status)
1272                 return status;
1273
1274         ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n",
1275                    options, sleep);
1276
1277         /* program analog PLL register */
1278         /* no need to control 40/44MHz clock on AR6004 */
1279         if (ar->target_type != TARGET_TYPE_AR6004) {
1280                 status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER,
1281                                               0xF9104001);
1282
1283                 if (status)
1284                         return status;
1285
1286                 /* Run at 80/88MHz by default */
1287                 param = SM(CPU_CLOCK_STANDARD, 1);
1288
1289                 address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS;
1290                 status = ath6kl_bmi_reg_write(ar, address, param);
1291                 if (status)
1292                         return status;
1293         }
1294
1295         param = 0;
1296         address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS;
1297         param = SM(LPO_CAL_ENABLE, 1);
1298         status = ath6kl_bmi_reg_write(ar, address, param);
1299         if (status)
1300                 return status;
1301
1302         /* WAR to avoid SDIO CRC err */
1303         if (ar->version.target_ver == AR6003_REV2_VERSION) {
1304                 ath6kl_err("temporary war to avoid sdio crc error\n");
1305
1306                 param = 0x20;
1307
1308                 address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS;
1309                 status = ath6kl_bmi_reg_write(ar, address, param);
1310                 if (status)
1311                         return status;
1312
1313                 address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS;
1314                 status = ath6kl_bmi_reg_write(ar, address, param);
1315                 if (status)
1316                         return status;
1317
1318                 address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS;
1319                 status = ath6kl_bmi_reg_write(ar, address, param);
1320                 if (status)
1321                         return status;
1322
1323                 address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS;
1324                 status = ath6kl_bmi_reg_write(ar, address, param);
1325                 if (status)
1326                         return status;
1327         }
1328
1329         /* write EEPROM data to Target RAM */
1330         status = ath6kl_upload_board_file(ar);
1331         if (status)
1332                 return status;
1333
1334         /* transfer One time Programmable data */
1335         status = ath6kl_upload_otp(ar);
1336         if (status)
1337                 return status;
1338
1339         /* Download Target firmware */
1340         status = ath6kl_upload_firmware(ar);
1341         if (status)
1342                 return status;
1343
1344         status = ath6kl_upload_patch(ar);
1345         if (status)
1346                 return status;
1347
1348         /* Restore system sleep */
1349         address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS;
1350         status = ath6kl_bmi_reg_write(ar, address, sleep);
1351         if (status)
1352                 return status;
1353
1354         address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS;
1355         param = options | 0x20;
1356         status = ath6kl_bmi_reg_write(ar, address, param);
1357         if (status)
1358                 return status;
1359
1360         /* Configure GPIO AR6003 UART */
1361         param = CONFIG_AR600x_DEBUG_UART_TX_PIN;
1362         status = ath6kl_bmi_write(ar,
1363                                   ath6kl_get_hi_item_addr(ar,
1364                                   HI_ITEM(hi_dbg_uart_txpin)),
1365                                   (u8 *)&param, 4);
1366
1367         return status;
1368 }
1369
1370 static int ath6kl_init_hw_params(struct ath6kl *ar)
1371 {
1372         const struct ath6kl_hw *hw;
1373         int i;
1374
1375         for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
1376                 hw = &hw_list[i];
1377
1378                 if (hw->id == ar->version.target_ver)
1379                         break;
1380         }
1381
1382         if (i == ARRAY_SIZE(hw_list)) {
1383                 ath6kl_err("Unsupported hardware version: 0x%x\n",
1384                            ar->version.target_ver);
1385                 return -EINVAL;
1386         }
1387
1388         ar->hw = *hw;
1389
1390         ath6kl_dbg(ATH6KL_DBG_BOOT,
1391                    "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n",
1392                    ar->version.target_ver, ar->target_type,
1393                    ar->hw.dataset_patch_addr, ar->hw.app_load_addr);
1394         ath6kl_dbg(ATH6KL_DBG_BOOT,
1395                    "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x",
1396                    ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr,
1397                    ar->hw.reserved_ram_size);
1398
1399         return 0;
1400 }
1401
1402 int ath6kl_init_hw_start(struct ath6kl *ar)
1403 {
1404         long timeleft;
1405         int ret, i;
1406
1407         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw start\n");
1408
1409         ret = ath6kl_hif_power_on(ar);
1410         if (ret)
1411                 return ret;
1412
1413         ret = ath6kl_configure_target(ar);
1414         if (ret)
1415                 goto err_power_off;
1416
1417         ret = ath6kl_init_upload(ar);
1418         if (ret)
1419                 goto err_power_off;
1420
1421         /* Do we need to finish the BMI phase */
1422         /* FIXME: return error from ath6kl_bmi_done() */
1423         if (ath6kl_bmi_done(ar)) {
1424                 ret = -EIO;
1425                 goto err_power_off;
1426         }
1427
1428         /*
1429          * The reason we have to wait for the target here is that the
1430          * driver layer has to init BMI in order to set the host block
1431          * size.
1432          */
1433         if (ath6kl_htc_wait_target(ar->htc_target)) {
1434                 ret = -EIO;
1435                 goto err_power_off;
1436         }
1437
1438         if (ath6kl_init_service_ep(ar)) {
1439                 ret = -EIO;
1440                 goto err_cleanup_scatter;
1441         }
1442
1443         /* setup credit distribution */
1444         ath6kl_credit_setup(ar->htc_target, &ar->credit_state_info);
1445
1446         /* start HTC */
1447         ret = ath6kl_htc_start(ar->htc_target);
1448         if (ret) {
1449                 /* FIXME: call this */
1450                 ath6kl_cookie_cleanup(ar);
1451                 goto err_cleanup_scatter;
1452         }
1453
1454         /* Wait for Wmi event to be ready */
1455         timeleft = wait_event_interruptible_timeout(ar->event_wq,
1456                                                     test_bit(WMI_READY,
1457                                                              &ar->flag),
1458                                                     WMI_TIMEOUT);
1459
1460         ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n");
1461
1462         if (ar->version.abi_ver != ATH6KL_ABI_VERSION) {
1463                 ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n",
1464                            ATH6KL_ABI_VERSION, ar->version.abi_ver);
1465                 ret = -EIO;
1466                 goto err_htc_stop;
1467         }
1468
1469         if (!timeleft || signal_pending(current)) {
1470                 ath6kl_err("wmi is not ready or wait was interrupted\n");
1471                 ret = -EIO;
1472                 goto err_htc_stop;
1473         }
1474
1475         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__);
1476
1477         /* communicate the wmi protocol verision to the target */
1478         /* FIXME: return error */
1479         if ((ath6kl_set_host_app_area(ar)) != 0)
1480                 ath6kl_err("unable to set the host app area\n");
1481
1482         for (i = 0; i < MAX_NUM_VIF; i++) {
1483                 ret = ath6kl_target_config_wlan_params(ar, i);
1484                 if (ret)
1485                         goto err_htc_stop;
1486         }
1487
1488         ar->state = ATH6KL_STATE_ON;
1489
1490         return 0;
1491
1492 err_htc_stop:
1493         ath6kl_htc_stop(ar->htc_target);
1494 err_cleanup_scatter:
1495         ath6kl_hif_cleanup_scatter(ar);
1496 err_power_off:
1497         ath6kl_hif_power_off(ar);
1498
1499         return ret;
1500 }
1501
1502 int ath6kl_init_hw_stop(struct ath6kl *ar)
1503 {
1504         int ret;
1505
1506         ath6kl_dbg(ATH6KL_DBG_BOOT, "hw stop\n");
1507
1508         ath6kl_htc_stop(ar->htc_target);
1509
1510         ath6kl_hif_stop(ar);
1511
1512         ath6kl_bmi_reset(ar);
1513
1514         ret = ath6kl_hif_power_off(ar);
1515         if (ret)
1516                 ath6kl_warn("failed to power off hif: %d\n", ret);
1517
1518         ar->state = ATH6KL_STATE_OFF;
1519
1520         return 0;
1521 }
1522
1523 int ath6kl_core_init(struct ath6kl *ar)
1524 {
1525         struct ath6kl_bmi_target_info targ_info;
1526         struct net_device *ndev;
1527         int ret = 0, i;
1528
1529         ar->ath6kl_wq = create_singlethread_workqueue("ath6kl");
1530         if (!ar->ath6kl_wq)
1531                 return -ENOMEM;
1532
1533         ret = ath6kl_bmi_init(ar);
1534         if (ret)
1535                 goto err_wq;
1536
1537         /*
1538          * Turn on power to get hardware (target) version and leave power
1539          * on delibrately as we will boot the hardware anyway within few
1540          * seconds.
1541          */
1542         ret = ath6kl_hif_power_on(ar);
1543         if (ret)
1544                 goto err_bmi_cleanup;
1545
1546         ret = ath6kl_bmi_get_target_info(ar, &targ_info);
1547         if (ret)
1548                 goto err_power_off;
1549
1550         ar->version.target_ver = le32_to_cpu(targ_info.version);
1551         ar->target_type = le32_to_cpu(targ_info.type);
1552         ar->wiphy->hw_version = le32_to_cpu(targ_info.version);
1553
1554         ret = ath6kl_init_hw_params(ar);
1555         if (ret)
1556                 goto err_power_off;
1557
1558         ar->htc_target = ath6kl_htc_create(ar);
1559
1560         if (!ar->htc_target) {
1561                 ret = -ENOMEM;
1562                 goto err_power_off;
1563         }
1564
1565         ret = ath6kl_fetch_firmwares(ar);
1566         if (ret)
1567                 goto err_htc_cleanup;
1568
1569         /* FIXME: we should free all firmwares in the error cases below */
1570
1571         /* Indicate that WMI is enabled (although not ready yet) */
1572         set_bit(WMI_ENABLED, &ar->flag);
1573         ar->wmi = ath6kl_wmi_init(ar);
1574         if (!ar->wmi) {
1575                 ath6kl_err("failed to initialize wmi\n");
1576                 ret = -EIO;
1577                 goto err_htc_cleanup;
1578         }
1579
1580         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);
1581
1582         ret = ath6kl_register_ieee80211_hw(ar);
1583         if (ret)
1584                 goto err_node_cleanup;
1585
1586         ret = ath6kl_debug_init(ar);
1587         if (ret) {
1588                 wiphy_unregister(ar->wiphy);
1589                 goto err_node_cleanup;
1590         }
1591
1592         for (i = 0; i < MAX_NUM_VIF; i++)
1593                 ar->avail_idx_map |= BIT(i);
1594
1595         rtnl_lock();
1596
1597         /* Add an initial station interface */
1598         ndev = ath6kl_interface_add(ar, "wlan%d", NL80211_IFTYPE_STATION, 0,
1599                                     INFRA_NETWORK);
1600
1601         rtnl_unlock();
1602
1603         if (!ndev) {
1604                 ath6kl_err("Failed to instantiate a network device\n");
1605                 ret = -ENOMEM;
1606                 wiphy_unregister(ar->wiphy);
1607                 goto err_debug_init;
1608         }
1609
1610
1611         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
1612                         __func__, ndev->name, ndev, ar);
1613
1614         /* setup access class priority mappings */
1615         ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest  */
1616         ar->ac_stream_pri_map[WMM_AC_BE] = 1;
1617         ar->ac_stream_pri_map[WMM_AC_VI] = 2;
1618         ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */
1619
1620         /* give our connected endpoints some buffers */
1621         ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep);
1622         ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]);
1623
1624         /* allocate some buffers that handle larger AMSDU frames */
1625         ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);
1626
1627         ath6kl_cookie_init(ar);
1628
1629         ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
1630                          ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
1631
1632         if (suspend_cutpower)
1633                 ar->conf_flags |= ATH6KL_CONF_SUSPEND_CUTPOWER;
1634
1635         ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
1636                             WIPHY_FLAG_HAVE_AP_SME;
1637
1638         set_bit(FIRST_BOOT, &ar->flag);
1639
1640         ret = ath6kl_init_hw_start(ar);
1641         if (ret) {
1642                 ath6kl_err("Failed to start hardware: %d\n", ret);
1643                 goto err_rxbuf_cleanup;
1644         }
1645
1646         /*
1647          * Set mac address which is received in ready event
1648          * FIXME: Move to ath6kl_interface_add()
1649          */
1650         memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
1651
1652         return ret;
1653
1654 err_rxbuf_cleanup:
1655         ath6kl_htc_flush_rx_buf(ar->htc_target);
1656         ath6kl_cleanup_amsdu_rxbufs(ar);
1657         rtnl_lock();
1658         ath6kl_deinit_if_data(netdev_priv(ndev));
1659         rtnl_unlock();
1660         wiphy_unregister(ar->wiphy);
1661 err_debug_init:
1662         ath6kl_debug_cleanup(ar);
1663 err_node_cleanup:
1664         ath6kl_wmi_shutdown(ar->wmi);
1665         clear_bit(WMI_ENABLED, &ar->flag);
1666         ar->wmi = NULL;
1667 err_htc_cleanup:
1668         ath6kl_htc_cleanup(ar->htc_target);
1669 err_power_off:
1670         ath6kl_hif_power_off(ar);
1671 err_bmi_cleanup:
1672         ath6kl_bmi_cleanup(ar);
1673 err_wq:
1674         destroy_workqueue(ar->ath6kl_wq);
1675
1676         return ret;
1677 }
1678
1679 void ath6kl_cleanup_vif(struct ath6kl_vif *vif, bool wmi_ready)
1680 {
1681         static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
1682         bool discon_issued;
1683
1684         netif_stop_queue(vif->ndev);
1685
1686         clear_bit(WLAN_ENABLED, &vif->flags);
1687
1688         if (wmi_ready) {
1689                 discon_issued = test_bit(CONNECTED, &vif->flags) ||
1690                                 test_bit(CONNECT_PEND, &vif->flags);
1691                 ath6kl_disconnect(vif);
1692                 del_timer(&vif->disconnect_timer);
1693
1694                 if (discon_issued)
1695                         ath6kl_disconnect_event(vif, DISCONNECT_CMD,
1696                                                 (vif->nw_type & AP_NETWORK) ?
1697                                                 bcast_mac : vif->bssid,
1698                                                 0, NULL, 0);
1699         }
1700
1701         if (vif->scan_req) {
1702                 cfg80211_scan_done(vif->scan_req, true);
1703                 vif->scan_req = NULL;
1704         }
1705 }
1706
1707 void ath6kl_stop_txrx(struct ath6kl *ar)
1708 {
1709         struct ath6kl_vif *vif, *tmp_vif;
1710
1711         set_bit(DESTROY_IN_PROGRESS, &ar->flag);
1712
1713         if (down_interruptible(&ar->sem)) {
1714                 ath6kl_err("down_interruptible failed\n");
1715                 return;
1716         }
1717
1718         spin_lock_bh(&ar->list_lock);
1719         list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) {
1720                 list_del(&vif->list);
1721                 spin_unlock_bh(&ar->list_lock);
1722                 ath6kl_cleanup_vif(vif, test_bit(WMI_READY, &ar->flag));
1723                 rtnl_lock();
1724                 ath6kl_deinit_if_data(vif);
1725                 rtnl_unlock();
1726                 spin_lock_bh(&ar->list_lock);
1727         }
1728         spin_unlock_bh(&ar->list_lock);
1729
1730         clear_bit(WMI_READY, &ar->flag);
1731
1732         /*
1733          * After wmi_shudown all WMI events will be dropped. We
1734          * need to cleanup the buffers allocated in AP mode and
1735          * give disconnect notification to stack, which usually
1736          * happens in the disconnect_event. Simulate the disconnect
1737          * event by calling the function directly. Sometimes
1738          * disconnect_event will be received when the debug logs
1739          * are collected.
1740          */
1741         ath6kl_wmi_shutdown(ar->wmi);
1742
1743         clear_bit(WMI_ENABLED, &ar->flag);
1744         if (ar->htc_target) {
1745                 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
1746                 ath6kl_htc_stop(ar->htc_target);
1747         }
1748
1749         /*
1750          * Try to reset the device if we can. The driver may have been
1751          * configure NOT to reset the target during a debug session.
1752          */
1753         ath6kl_dbg(ATH6KL_DBG_TRC,
1754                         "attempting to reset target on instance destroy\n");
1755         ath6kl_reset_device(ar, ar->target_type, true, true);
1756
1757         clear_bit(WLAN_ENABLED, &ar->flag);
1758 }