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
  24 #include "debug.h"
  25 #include "hif-ops.h"
  26 #include "cfg80211.h"
  27
  28 unsigned int debug_mask;
  29 static unsigned int suspend_mode;
  30 static unsigned int wow_mode;
  31 static unsigned int uart_debug;
  32 static unsigned int ath6kl_p2p;
  33 static unsigned int testmode;
  34
  35 module_param(debug_mask, uint, 0644);
  36 module_param(suspend_mode, uint, 0644);
  37 module_param(wow_mode, uint, 0644);
  38 module_param(uart_debug, uint, 0644);
  39 module_param(ath6kl_p2p, uint, 0644);
  40 module_param(testmode, uint, 0644);
  41
  42 int ath6kl_core_init(struct ath6kl *ar)
  43 {
  44         struct ath6kl_bmi_target_info targ_info;
  45         struct net_device *ndev;
  46         int ret = 0, i;
  47
  48         ar->ath6kl_wq = create_singlethread_workqueue("ath6kl");
  49         if (!ar->ath6kl_wq)
  50                 return -ENOMEM;
  51
  52         ret = ath6kl_bmi_init(ar);
  53         if (ret)
  54                 goto err_wq;
  55
  56         /*
  57          * Turn on power to get hardware (target) version and leave power
  58          * on delibrately as we will boot the hardware anyway within few
  59          * seconds.
  60          */
  61         ret = ath6kl_hif_power_on(ar);
  62         if (ret)
  63                 goto err_bmi_cleanup;
  64
  65         ret = ath6kl_bmi_get_target_info(ar, &targ_info);
  66         if (ret)
  67                 goto err_power_off;
  68
  69         ar->version.target_ver = le32_to_cpu(targ_info.version);
  70         ar->target_type = le32_to_cpu(targ_info.type);
  71         ar->wiphy->hw_version = le32_to_cpu(targ_info.version);
  72
  73         ret = ath6kl_init_hw_params(ar);
  74         if (ret)
  75                 goto err_power_off;
  76
  77         ar->htc_target = ath6kl_htc_create(ar);
  78
  79         if (!ar->htc_target) {
  80                 ret = -ENOMEM;
  81                 goto err_power_off;
  82         }
  83
  84         ar->testmode = testmode;
  85
  86         ret = ath6kl_init_fetch_firmwares(ar);
  87         if (ret)
  88                 goto err_htc_cleanup;
  89
  90         /* FIXME: we should free all firmwares in the error cases below */
  91
  92         /* Indicate that WMI is enabled (although not ready yet) */
  93         set_bit(WMI_ENABLED, &ar->flag);
  94         ar->wmi = ath6kl_wmi_init(ar);
  95         if (!ar->wmi) {
  96                 ath6kl_err("failed to initialize wmi\n");
  97                 ret = -EIO;
  98                 goto err_htc_cleanup;
  99         }
 100
 101         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);
 102
 103         /* setup access class priority mappings */
 104         ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest  */
 105         ar->ac_stream_pri_map[WMM_AC_BE] = 1;
 106         ar->ac_stream_pri_map[WMM_AC_VI] = 2;
 107         ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */
 108
 109         /* allocate some buffers that handle larger AMSDU frames */
 110         ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);
 111
 112         ath6kl_cookie_init(ar);
 113
 114         ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
 115                          ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
 116
 117         if (suspend_mode &&
 118             suspend_mode >= WLAN_POWER_STATE_CUT_PWR &&
 119             suspend_mode <= WLAN_POWER_STATE_WOW)
 120                 ar->suspend_mode = suspend_mode;
 121         else
 122                 ar->suspend_mode = 0;
 123
 124         if (suspend_mode == WLAN_POWER_STATE_WOW &&
 125             (wow_mode == WLAN_POWER_STATE_CUT_PWR ||
 126              wow_mode == WLAN_POWER_STATE_DEEP_SLEEP))
 127                 ar->wow_suspend_mode = wow_mode;
 128         else
 129                 ar->wow_suspend_mode = 0;
 130
 131         if (uart_debug)
 132                 ar->conf_flags |= ATH6KL_CONF_UART_DEBUG;
 133
 134         set_bit(FIRST_BOOT, &ar->flag);
 135
 136         ath6kl_debug_init(ar);
 137
 138         ret = ath6kl_init_hw_start(ar);
 139         if (ret) {
 140                 ath6kl_err("Failed to start hardware: %d\n", ret);
 141                 goto err_rxbuf_cleanup;
 142         }
 143
 144         /* give our connected endpoints some buffers */
 145         ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep);
 146         ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]);
 147
 148         ret = ath6kl_cfg80211_init(ar);
 149         if (ret)
 150                 goto err_rxbuf_cleanup;
 151
 152         ret = ath6kl_debug_init_fs(ar);
 153         if (ret) {
 154                 wiphy_unregister(ar->wiphy);
 155                 goto err_rxbuf_cleanup;
 156         }
 157
 158         for (i = 0; i < ar->vif_max; i++)
 159                 ar->avail_idx_map |= BIT(i);
 160
 161         rtnl_lock();
 162
 163         /* Add an initial station interface */
 164         ndev = ath6kl_interface_add(ar, "wlan%d", NL80211_IFTYPE_STATION, 0,
 165                                     INFRA_NETWORK);
 166
 167         rtnl_unlock();
 168
 169         if (!ndev) {
 170                 ath6kl_err("Failed to instantiate a network device\n");
 171                 ret = -ENOMEM;
 172                 wiphy_unregister(ar->wiphy);
 173                 goto err_rxbuf_cleanup;
 174         }
 175
 176         ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
 177                    __func__, ndev->name, ndev, ar);
 178
 179         return ret;
 180
 181 err_rxbuf_cleanup:
 182         ath6kl_debug_cleanup(ar);
 183         ath6kl_htc_flush_rx_buf(ar->htc_target);
 184         ath6kl_cleanup_amsdu_rxbufs(ar);
 185         ath6kl_wmi_shutdown(ar->wmi);
 186         clear_bit(WMI_ENABLED, &ar->flag);
 187         ar->wmi = NULL;
 188 err_htc_cleanup:
 189         ath6kl_htc_cleanup(ar->htc_target);
 190 err_power_off:
 191         ath6kl_hif_power_off(ar);
 192 err_bmi_cleanup:
 193         ath6kl_bmi_cleanup(ar);
 194 err_wq:
 195         destroy_workqueue(ar->ath6kl_wq);
 196
 197         return ret;
 198 }
 199 EXPORT_SYMBOL(ath6kl_core_init);
 200
 201 struct ath6kl *ath6kl_core_create(struct device *dev)
 202 {
 203         struct ath6kl *ar;
 204         u8 ctr;
 205
 206         ar = ath6kl_cfg80211_create();
 207         if (!ar)
 208                 return NULL;
 209
 210         ar->p2p = !!ath6kl_p2p;
 211         ar->dev = dev;
 212
 213         ar->vif_max = 1;
 214
 215         ar->max_norm_iface = 1;
 216
 217         spin_lock_init(&ar->lock);
 218         spin_lock_init(&ar->mcastpsq_lock);
 219         spin_lock_init(&ar->list_lock);
 220
 221         init_waitqueue_head(&ar->event_wq);
 222         sema_init(&ar->sem, 1);
 223
 224         INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
 225         INIT_LIST_HEAD(&ar->vif_list);
 226
 227         clear_bit(WMI_ENABLED, &ar->flag);
 228         clear_bit(SKIP_SCAN, &ar->flag);
 229         clear_bit(DESTROY_IN_PROGRESS, &ar->flag);
 230
 231         ar->tx_pwr = 0;
 232         ar->intra_bss = 1;
 233         ar->lrssi_roam_threshold = DEF_LRSSI_ROAM_THRESHOLD;
 234
 235         ar->state = ATH6KL_STATE_OFF;
 236
 237         memset((u8 *)ar->sta_list, 0,
 238                AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));
 239
 240         /* Init the PS queues */
 241         for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
 242                 spin_lock_init(&ar->sta_list[ctr].psq_lock);
 243                 skb_queue_head_init(&ar->sta_list[ctr].psq);
 244                 skb_queue_head_init(&ar->sta_list[ctr].apsdq);
 245                 ar->sta_list[ctr].mgmt_psq_len = 0;
 246                 INIT_LIST_HEAD(&ar->sta_list[ctr].mgmt_psq);
 247                 ar->sta_list[ctr].aggr_conn =
 248                         kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL);
 249                 if (!ar->sta_list[ctr].aggr_conn) {
 250                         ath6kl_err("Failed to allocate memory for sta aggregation information\n");
 251                         ath6kl_core_destroy(ar);
 252                         return NULL;
 253                 }
 254         }
 255
 256         skb_queue_head_init(&ar->mcastpsq);
 257
 258         memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);
 259
 260         return ar;
 261 }
 262 EXPORT_SYMBOL(ath6kl_core_create);
 263
 264 void ath6kl_core_cleanup(struct ath6kl *ar)
 265 {
 266         ath6kl_hif_power_off(ar);
 267
 268         destroy_workqueue(ar->ath6kl_wq);
 269
 270         if (ar->htc_target)
 271                 ath6kl_htc_cleanup(ar->htc_target);
 272
 273         ath6kl_cookie_cleanup(ar);
 274
 275         ath6kl_cleanup_amsdu_rxbufs(ar);
 276
 277         ath6kl_bmi_cleanup(ar);
 278
 279         ath6kl_debug_cleanup(ar);
 280
 281         kfree(ar->fw_board);
 282         kfree(ar->fw_otp);
 283         kfree(ar->fw);
 284         kfree(ar->fw_patch);
 285         kfree(ar->fw_testscript);
 286
 287         ath6kl_cfg80211_cleanup(ar);
 288 }
 289 EXPORT_SYMBOL(ath6kl_core_cleanup);
 290
 291 void ath6kl_core_destroy(struct ath6kl *ar)
 292 {
 293         ath6kl_cfg80211_destroy(ar);
 294 }
 295 EXPORT_SYMBOL(ath6kl_core_destroy);
 296
 297 MODULE_AUTHOR("Qualcomm Atheros");
 298 MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
 299 MODULE_LICENSE("Dual BSD/GPL");