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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 
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 
37 module_param(debug_mask, uint, 0644);
38 module_param(suspend_mode, uint, 0644);
39 module_param(wow_mode, uint, 0644);
40 module_param(uart_debug, uint, 0644);
41 module_param(ath6kl_p2p, uint, 0644);
42 module_param(testmode, uint, 0644);
43 
45 {
46  ath6kl_htc_tx_complete(ar, skb);
47 }
49 
51 {
52  ath6kl_htc_rx_complete(ar, skb, pipe);
53 }
55 
56 int ath6kl_core_init(struct ath6kl *ar, enum ath6kl_htc_type htc_type)
57 {
58  struct ath6kl_bmi_target_info targ_info;
59  struct wireless_dev *wdev;
60  int ret = 0, i;
61 
62  switch (htc_type) {
65  break;
68  break;
69  default:
70  WARN_ON(1);
71  return -ENOMEM;
72  }
73 
75  if (!ar->ath6kl_wq)
76  return -ENOMEM;
77 
78  ret = ath6kl_bmi_init(ar);
79  if (ret)
80  goto err_wq;
81 
82  /*
83  * Turn on power to get hardware (target) version and leave power
84  * on delibrately as we will boot the hardware anyway within few
85  * seconds.
86  */
87  ret = ath6kl_hif_power_on(ar);
88  if (ret)
89  goto err_bmi_cleanup;
90 
91  ret = ath6kl_bmi_get_target_info(ar, &targ_info);
92  if (ret)
93  goto err_power_off;
94 
95  ar->version.target_ver = le32_to_cpu(targ_info.version);
96  ar->target_type = le32_to_cpu(targ_info.type);
97  ar->wiphy->hw_version = le32_to_cpu(targ_info.version);
98 
99  ret = ath6kl_init_hw_params(ar);
100  if (ret)
101  goto err_power_off;
102 
103  ar->htc_target = ath6kl_htc_create(ar);
104 
105  if (!ar->htc_target) {
106  ret = -ENOMEM;
107  goto err_power_off;
108  }
109 
110  ar->testmode = testmode;
111 
112  ret = ath6kl_init_fetch_firmwares(ar);
113  if (ret)
114  goto err_htc_cleanup;
115 
116  /* FIXME: we should free all firmwares in the error cases below */
117 
118  /* Indicate that WMI is enabled (although not ready yet) */
119  set_bit(WMI_ENABLED, &ar->flag);
120  ar->wmi = ath6kl_wmi_init(ar);
121  if (!ar->wmi) {
122  ath6kl_err("failed to initialize wmi\n");
123  ret = -EIO;
124  goto err_htc_cleanup;
125  }
126 
127  ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);
128 
129  /* setup access class priority mappings */
130  ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest */
131  ar->ac_stream_pri_map[WMM_AC_BE] = 1;
132  ar->ac_stream_pri_map[WMM_AC_VI] = 2;
133  ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */
134 
135  /* allocate some buffers that handle larger AMSDU frames */
137 
138  ath6kl_cookie_init(ar);
139 
142 
143  if (suspend_mode &&
144  suspend_mode >= WLAN_POWER_STATE_CUT_PWR &&
145  suspend_mode <= WLAN_POWER_STATE_WOW)
146  ar->suspend_mode = suspend_mode;
147  else
148  ar->suspend_mode = 0;
149 
150  if (suspend_mode == WLAN_POWER_STATE_WOW &&
151  (wow_mode == WLAN_POWER_STATE_CUT_PWR ||
152  wow_mode == WLAN_POWER_STATE_DEEP_SLEEP))
153  ar->wow_suspend_mode = wow_mode;
154  else
155  ar->wow_suspend_mode = 0;
156 
157  if (uart_debug)
159 
160  set_bit(FIRST_BOOT, &ar->flag);
161 
162  ath6kl_debug_init(ar);
163 
164  ret = ath6kl_init_hw_start(ar);
165  if (ret) {
166  ath6kl_err("Failed to start hardware: %d\n", ret);
167  goto err_rxbuf_cleanup;
168  }
169 
170  /* give our connected endpoints some buffers */
173 
174  ret = ath6kl_cfg80211_init(ar);
175  if (ret)
176  goto err_rxbuf_cleanup;
177 
178  ret = ath6kl_debug_init_fs(ar);
179  if (ret) {
180  wiphy_unregister(ar->wiphy);
181  goto err_rxbuf_cleanup;
182  }
183 
184  for (i = 0; i < ar->vif_max; i++)
185  ar->avail_idx_map |= BIT(i);
186 
187  rtnl_lock();
188 
189  /* Add an initial station interface */
190  wdev = ath6kl_interface_add(ar, "wlan%d", NL80211_IFTYPE_STATION, 0,
191  INFRA_NETWORK);
192 
193  rtnl_unlock();
194 
195  if (!wdev) {
196  ath6kl_err("Failed to instantiate a network device\n");
197  ret = -ENOMEM;
198  wiphy_unregister(ar->wiphy);
199  goto err_rxbuf_cleanup;
200  }
201 
202  ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
203  __func__, wdev->netdev->name, wdev->netdev, ar);
204 
205  return ret;
206 
207 err_rxbuf_cleanup:
208  ath6kl_debug_cleanup(ar);
209  ath6kl_htc_flush_rx_buf(ar->htc_target);
212  clear_bit(WMI_ENABLED, &ar->flag);
213  ar->wmi = NULL;
214 err_htc_cleanup:
215  ath6kl_htc_cleanup(ar->htc_target);
216 err_power_off:
217  ath6kl_hif_power_off(ar);
218 err_bmi_cleanup:
219  ath6kl_bmi_cleanup(ar);
220 err_wq:
222 
223  return ret;
224 }
226 
228 {
229  struct ath6kl *ar;
230  u8 ctr;
231 
232  ar = ath6kl_cfg80211_create();
233  if (!ar)
234  return NULL;
235 
236  ar->p2p = !!ath6kl_p2p;
237  ar->dev = dev;
238 
239  ar->vif_max = 1;
240 
241  ar->max_norm_iface = 1;
242 
243  spin_lock_init(&ar->lock);
246 
248  sema_init(&ar->sem, 1);
249 
250  INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
251  INIT_LIST_HEAD(&ar->vif_list);
252 
253  clear_bit(WMI_ENABLED, &ar->flag);
254  clear_bit(SKIP_SCAN, &ar->flag);
256 
257  ar->tx_pwr = 0;
258  ar->intra_bss = 1;
260 
261  ar->state = ATH6KL_STATE_OFF;
262 
263  memset((u8 *)ar->sta_list, 0,
264  AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));
265 
266  /* Init the PS queues */
267  for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
268  spin_lock_init(&ar->sta_list[ctr].psq_lock);
269  skb_queue_head_init(&ar->sta_list[ctr].psq);
270  skb_queue_head_init(&ar->sta_list[ctr].apsdq);
271  ar->sta_list[ctr].mgmt_psq_len = 0;
272  INIT_LIST_HEAD(&ar->sta_list[ctr].mgmt_psq);
273  ar->sta_list[ctr].aggr_conn =
274  kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL);
275  if (!ar->sta_list[ctr].aggr_conn) {
276  ath6kl_err("Failed to allocate memory for sta aggregation information\n");
278  return NULL;
279  }
280  }
281 
282  skb_queue_head_init(&ar->mcastpsq);
283 
285 
286  return ar;
287 }
289 
291 {
292  ath6kl_hif_power_off(ar);
293 
295 
296  if (ar->htc_target)
297  ath6kl_htc_cleanup(ar->htc_target);
298 
300 
302 
303  ath6kl_bmi_cleanup(ar);
304 
305  ath6kl_debug_cleanup(ar);
306 
307  kfree(ar->fw_board);
308  kfree(ar->fw_otp);
309  vfree(ar->fw);
310  kfree(ar->fw_patch);
311  kfree(ar->fw_testscript);
312 
314 }
316 
318 {
320 }
322 
323 MODULE_AUTHOR("Qualcomm Atheros");
324 MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
325 MODULE_LICENSE("Dual BSD/GPL");