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

   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
  30 unsigned int debug_mask;
  31 static unsigned int suspend_mode;
  32 static unsigned int wow_mode;
  33 static unsigned int uart_debug;
  34 static unsigned int uart_rate = 115200;
  35 static unsigned int ath6kl_p2p;
  36 static unsigned int testmode;
  37 static unsigned int recovery_enable;
  38 static unsigned int heart_beat_poll;
  39
  40 module_param(debug_mask, uint, 0644);
  41 module_param(suspend_mode, uint, 0644);
  42 module_param(wow_mode, uint, 0644);
  43 module_param(uart_debug, uint, 0644);
  44 module_param(uart_rate, uint, 0644);
  45 module_param(ath6kl_p2p, uint, 0644);
  46 module_param(testmode, uint, 0644);
  47 module_param(recovery_enable, uint, 0644);
  48 module_param(heart_beat_poll, uint, 0644);
  49 MODULE_PARM_DESC(recovery_enable, "Enable recovery from firmware error");
  50 MODULE_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
  54 void ath6kl_core_tx_complete(struct ath6kl *ar, struct sk_buff *skb)
  55 {
  56         ath6kl_htc_tx_complete(ar, skb);
  57 }
  58 EXPORT_SYMBOL(ath6kl_core_tx_complete);
  59
  60 void ath6kl_core_rx_complete(struct ath6kl *ar, struct sk_buff *skb, u8 pipe)
  61 {
  62         ath6kl_htc_rx_complete(ar, skb, pipe);
  63 }
  64 EXPORT_SYMBOL(ath6kl_core_rx_complete);
  65
  66 int 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
 245 err_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;
 252 err_htc_cleanup:
 253         ath6kl_htc_cleanup(ar->htc_target);
 254 err_power_off:
 255         ath6kl_hif_power_off(ar);
 256 err_bmi_cleanup:
 257         ath6kl_bmi_cleanup(ar);
 258 err_wq:
 259         destroy_workqueue(ar->ath6kl_wq);
 260
 261         return ret;
 262 }
 263 EXPORT_SYMBOL(ath6kl_core_init);
 264
 265 struct 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 }
 326 EXPORT_SYMBOL(ath6kl_core_create);
 327
 328 void 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 }
 355 EXPORT_SYMBOL(ath6kl_core_cleanup);
 356
 357 void ath6kl_core_destroy(struct ath6kl *ar)
 358 {
 359         ath6kl_cfg80211_destroy(ar);
 360 }
 361 EXPORT_SYMBOL(ath6kl_core_destroy);
 362
 363 MODULE_AUTHOR("Qualcomm Atheros");
 364 MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
 365 MODULE_LICENSE("Dual BSD/GPL");