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