linux/drivers/net/wireless/ath/ath6kl/core.c
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   1/*
   2 * Copyright (c) 2004-2011 Atheros Communications Inc.
   3 * Copyright (c) 2011-2012 Qualcomm Atheros, 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 "core.h"
  19
  20#include <linux/module.h>
  21#include <linux/moduleparam.h>
  22#include <linux/export.h>
  23#include <linux/vmalloc.h>
  24
  25#include "debug.h"
  26#include "hif-ops.h"
  27#include "htc-ops.h"
  28#include "cfg80211.h"
  29
  30unsigned int debug_mask;
  31static unsigned int suspend_mode;
  32static unsigned int wow_mode;
  33static unsigned int uart_debug;
  34static unsigned int uart_rate = 115200;
  35static unsigned int ath6kl_p2p;
  36static unsigned int testmode;
  37static unsigned int recovery_enable;
  38static unsigned int heart_beat_poll;
  39
  40module_param(debug_mask, uint, 0644);
  41module_param(suspend_mode, uint, 0644);
  42module_param(wow_mode, uint, 0644);
  43module_param(uart_debug, uint, 0644);
  44module_param(uart_rate, uint, 0644);
  45module_param(ath6kl_p2p, uint, 0644);
  46module_param(testmode, uint, 0644);
  47module_param(recovery_enable, uint, 0644);
  48module_param(heart_beat_poll, uint, 0644);
  49MODULE_PARM_DESC(recovery_enable, "Enable recovery from firmware error");
  50MODULE_PARM_DESC(heart_beat_poll,
  51                 "Enable fw error detection periodic polling in msecs - Also set recovery_enable for this to be effective");
  52
  53
  54void ath6kl_core_tx_complete(struct ath6kl *ar, struct sk_buff *skb)
  55{
  56        ath6kl_htc_tx_complete(ar, skb);
  57}
  58EXPORT_SYMBOL(ath6kl_core_tx_complete);
  59
  60void ath6kl_core_rx_complete(struct ath6kl *ar, struct sk_buff *skb, u8 pipe)
  61{
  62        ath6kl_htc_rx_complete(ar, skb, pipe);
  63}
  64EXPORT_SYMBOL(ath6kl_core_rx_complete);
  65
  66int ath6kl_core_init(struct ath6kl *ar, enum ath6kl_htc_type htc_type)
  67{
  68        struct ath6kl_bmi_target_info targ_info;
  69        struct wireless_dev *wdev;
  70        int ret = 0, i;
  71
  72        switch (htc_type) {
  73        case ATH6KL_HTC_TYPE_MBOX:
  74                ath6kl_htc_mbox_attach(ar);
  75                break;
  76        case ATH6KL_HTC_TYPE_PIPE:
  77                ath6kl_htc_pipe_attach(ar);
  78                break;
  79        default:
  80                WARN_ON(1);
  81                return -ENOMEM;
  82        }
  83
  84        ar->ath6kl_wq = create_singlethread_workqueue("ath6kl");
  85        if (!ar->ath6kl_wq)
  86                return -ENOMEM;
  87
  88        ret = ath6kl_bmi_init(ar);
  89        if (ret)
  90                goto err_wq;
  91
  92        /*
  93         * Turn on power to get hardware (target) version and leave power
  94         * on delibrately as we will boot the hardware anyway within few
  95         * seconds.
  96         */
  97        ret = ath6kl_hif_power_on(ar);
  98        if (ret)
  99                goto err_bmi_cleanup;
 100
 101        ret = ath6kl_bmi_get_target_info(ar, &targ_info);
 102        if (ret)
 103                goto err_power_off;
 104
 105        ar->version.target_ver = le32_to_cpu(targ_info.version);
 106        ar->target_type = le32_to_cpu(targ_info.type);
 107        ar->wiphy->hw_version = le32_to_cpu(targ_info.version);
 108
 109        ret = ath6kl_init_hw_params(ar);
 110        if (ret)
 111                goto err_power_off;
 112
 113        ar->htc_target = ath6kl_htc_create(ar);
 114
 115        if (!ar->htc_target) {
 116                ret = -ENOMEM;
 117                goto err_power_off;
 118        }
 119
 120        ar->testmode = testmode;
 121
 122        ret = ath6kl_init_fetch_firmwares(ar);
 123        if (ret)
 124                goto err_htc_cleanup;
 125
 126        /* FIXME: we should free all firmwares in the error cases below */
 127
 128        /*
 129         * Backwards compatibility support for older ar6004 firmware images
 130         * which do not set these feature flags.
 131         */
 132        if (ar->target_type == TARGET_TYPE_AR6004 &&
 133            ar->fw_api <= 4) {
 134                __set_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES,
 135                          ar->fw_capabilities);
 136                __set_bit(ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS,
 137                          ar->fw_capabilities);
 138
 139                if (ar->hw.id == AR6004_HW_1_3_VERSION)
 140                        __set_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT,
 141                                  ar->fw_capabilities);
 142        }
 143
 144        /* Indicate that WMI is enabled (although not ready yet) */
 145        set_bit(WMI_ENABLED, &ar->flag);
 146        ar->wmi = ath6kl_wmi_init(ar);
 147        if (!ar->wmi) {
 148                ath6kl_err("failed to initialize wmi\n");
 149                ret = -EIO;
 150                goto err_htc_cleanup;
 151        }
 152
 153        ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);
 154
 155        /* setup access class priority mappings */
 156        ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest  */
 157        ar->ac_stream_pri_map[WMM_AC_BE] = 1;
 158        ar->ac_stream_pri_map[WMM_AC_VI] = 2;
 159        ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */
 160
 161        /* allocate some buffers that handle larger AMSDU frames */
 162        ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);
 163
 164        ath6kl_cookie_init(ar);
 165
 166        ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
 167                         ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
 168
 169        if (suspend_mode &&
 170            suspend_mode >= WLAN_POWER_STATE_CUT_PWR &&
 171            suspend_mode <= WLAN_POWER_STATE_WOW)
 172                ar->suspend_mode = suspend_mode;
 173        else
 174                ar->suspend_mode = 0;
 175
 176        if (suspend_mode == WLAN_POWER_STATE_WOW &&
 177            (wow_mode == WLAN_POWER_STATE_CUT_PWR ||
 178             wow_mode == WLAN_POWER_STATE_DEEP_SLEEP))
 179                ar->wow_suspend_mode = wow_mode;
 180        else
 181                ar->wow_suspend_mode = 0;
 182
 183        if (uart_debug)
 184                ar->conf_flags |= ATH6KL_CONF_UART_DEBUG;
 185        ar->hw.uarttx_rate = uart_rate;
 186
 187        set_bit(FIRST_BOOT, &ar->flag);
 188
 189        ath6kl_debug_init(ar);
 190
 191        ret = ath6kl_init_hw_start(ar);
 192        if (ret) {
 193                ath6kl_err("Failed to start hardware: %d\n", ret);
 194                goto err_rxbuf_cleanup;
 195        }
 196
 197        /* give our connected endpoints some buffers */
 198        ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep);
 199        ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]);
 200
 201        ret = ath6kl_cfg80211_init(ar);
 202        if (ret)
 203                goto err_rxbuf_cleanup;
 204
 205        ret = ath6kl_debug_init_fs(ar);
 206        if (ret) {
 207                wiphy_unregister(ar->wiphy);
 208                goto err_rxbuf_cleanup;
 209        }
 210
 211        for (i = 0; i < ar->vif_max; i++)
 212                ar->avail_idx_map |= BIT(i);
 213
 214        rtnl_lock();
 215
 216        /* Add an initial station interface */
 217        wdev = ath6kl_interface_add(ar, "wlan%d", NET_NAME_ENUM,
 218                                    NL80211_IFTYPE_STATION, 0, INFRA_NETWORK);
 219
 220        rtnl_unlock();
 221
 222        if (!wdev) {
 223                ath6kl_err("Failed to instantiate a network device\n");
 224                ret = -ENOMEM;
 225                wiphy_unregister(ar->wiphy);
 226                goto err_rxbuf_cleanup;
 227        }
 228
 229        ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
 230                   __func__, wdev->netdev->name, wdev->netdev, ar);
 231
 232        ar->fw_recovery.enable = !!recovery_enable;
 233        if (!ar->fw_recovery.enable)
 234                return ret;
 235
 236        if (heart_beat_poll &&
 237            test_bit(ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL,
 238                     ar->fw_capabilities))
 239                ar->fw_recovery.hb_poll = heart_beat_poll;
 240
 241        ath6kl_recovery_init(ar);
 242
 243        return ret;
 244
 245err_rxbuf_cleanup:
 246        ath6kl_debug_cleanup(ar);
 247        ath6kl_htc_flush_rx_buf(ar->htc_target);
 248        ath6kl_cleanup_amsdu_rxbufs(ar);
 249        ath6kl_wmi_shutdown(ar->wmi);
 250        clear_bit(WMI_ENABLED, &ar->flag);
 251        ar->wmi = NULL;
 252err_htc_cleanup:
 253        ath6kl_htc_cleanup(ar->htc_target);
 254err_power_off:
 255        ath6kl_hif_power_off(ar);
 256err_bmi_cleanup:
 257        ath6kl_bmi_cleanup(ar);
 258err_wq:
 259        destroy_workqueue(ar->ath6kl_wq);
 260
 261        return ret;
 262}
 263EXPORT_SYMBOL(ath6kl_core_init);
 264
 265struct ath6kl *ath6kl_core_create(struct device *dev)
 266{
 267        struct ath6kl *ar;
 268        u8 ctr;
 269
 270        ar = ath6kl_cfg80211_create();
 271        if (!ar)
 272                return NULL;
 273
 274        ar->p2p = !!ath6kl_p2p;
 275        ar->dev = dev;
 276
 277        ar->vif_max = 1;
 278
 279        ar->max_norm_iface = 1;
 280
 281        spin_lock_init(&ar->lock);
 282        spin_lock_init(&ar->mcastpsq_lock);
 283        spin_lock_init(&ar->list_lock);
 284
 285        init_waitqueue_head(&ar->event_wq);
 286        sema_init(&ar->sem, 1);
 287
 288        INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
 289        INIT_LIST_HEAD(&ar->vif_list);
 290
 291        clear_bit(WMI_ENABLED, &ar->flag);
 292        clear_bit(SKIP_SCAN, &ar->flag);
 293        clear_bit(DESTROY_IN_PROGRESS, &ar->flag);
 294
 295        ar->tx_pwr = 0;
 296        ar->intra_bss = 1;
 297        ar->lrssi_roam_threshold = DEF_LRSSI_ROAM_THRESHOLD;
 298
 299        ar->state = ATH6KL_STATE_OFF;
 300
 301        memset((u8 *)ar->sta_list, 0,
 302               AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));
 303
 304        /* Init the PS queues */
 305        for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
 306                spin_lock_init(&ar->sta_list[ctr].psq_lock);
 307                skb_queue_head_init(&ar->sta_list[ctr].psq);
 308                skb_queue_head_init(&ar->sta_list[ctr].apsdq);
 309                ar->sta_list[ctr].mgmt_psq_len = 0;
 310                INIT_LIST_HEAD(&ar->sta_list[ctr].mgmt_psq);
 311                ar->sta_list[ctr].aggr_conn =
 312                        kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL);
 313                if (!ar->sta_list[ctr].aggr_conn) {
 314                        ath6kl_err("Failed to allocate memory for sta aggregation information\n");
 315                        ath6kl_core_destroy(ar);
 316                        return NULL;
 317                }
 318        }
 319
 320        skb_queue_head_init(&ar->mcastpsq);
 321
 322        memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);
 323
 324        return ar;
 325}
 326EXPORT_SYMBOL(ath6kl_core_create);
 327
 328void ath6kl_core_cleanup(struct ath6kl *ar)
 329{
 330        ath6kl_hif_power_off(ar);
 331
 332        ath6kl_recovery_cleanup(ar);
 333
 334        destroy_workqueue(ar->ath6kl_wq);
 335
 336        if (ar->htc_target)
 337                ath6kl_htc_cleanup(ar->htc_target);
 338
 339        ath6kl_cookie_cleanup(ar);
 340
 341        ath6kl_cleanup_amsdu_rxbufs(ar);
 342
 343        ath6kl_bmi_cleanup(ar);
 344
 345        ath6kl_debug_cleanup(ar);
 346
 347        kfree(ar->fw_board);
 348        kfree(ar->fw_otp);
 349        vfree(ar->fw);
 350        kfree(ar->fw_patch);
 351        kfree(ar->fw_testscript);
 352
 353        ath6kl_cfg80211_cleanup(ar);
 354}
 355EXPORT_SYMBOL(ath6kl_core_cleanup);
 356
 357void ath6kl_core_destroy(struct ath6kl *ar)
 358{
 359        ath6kl_cfg80211_destroy(ar);
 360}
 361EXPORT_SYMBOL(ath6kl_core_destroy);
 362
 363MODULE_AUTHOR("Qualcomm Atheros");
 364MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
 365MODULE_LICENSE("Dual BSD/GPL");
 366