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
ath6kl_core_tx_complete(struct ath6kl * ar,struct sk_buff * skb)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
ath6kl_core_rx_complete(struct ath6kl * ar,struct sk_buff * skb,u8 pipe)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
ath6kl_core_init(struct ath6kl * ar,enum ath6kl_htc_type htc_type)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 wiphy_lock(ar->wiphy);
216
217 /* Add an initial station interface */
218 wdev = ath6kl_interface_add(ar, "wlan%d", NET_NAME_ENUM,
219 NL80211_IFTYPE_STATION, 0, INFRA_NETWORK);
220
221 wiphy_unlock(ar->wiphy);
222 rtnl_unlock();
223
224 if (!wdev) {
225 ath6kl_err("Failed to instantiate a network device\n");
226 ret = -ENOMEM;
227 wiphy_unregister(ar->wiphy);
228 goto err_rxbuf_cleanup;
229 }
230
231 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
232 __func__, wdev->netdev->name, wdev->netdev, ar);
233
234 ar->fw_recovery.enable = !!recovery_enable;
235 if (!ar->fw_recovery.enable)
236 return ret;
237
238 if (heart_beat_poll &&
239 test_bit(ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL,
240 ar->fw_capabilities))
241 ar->fw_recovery.hb_poll = heart_beat_poll;
242
243 ath6kl_recovery_init(ar);
244
245 return ret;
246
247 err_rxbuf_cleanup:
248 ath6kl_debug_cleanup(ar);
249 ath6kl_htc_flush_rx_buf(ar->htc_target);
250 ath6kl_cleanup_amsdu_rxbufs(ar);
251 ath6kl_wmi_shutdown(ar->wmi);
252 clear_bit(WMI_ENABLED, &ar->flag);
253 ar->wmi = NULL;
254 err_htc_cleanup:
255 ath6kl_htc_cleanup(ar->htc_target);
256 err_power_off:
257 ath6kl_hif_power_off(ar);
258 err_bmi_cleanup:
259 ath6kl_bmi_cleanup(ar);
260 err_wq:
261 destroy_workqueue(ar->ath6kl_wq);
262
263 return ret;
264 }
265 EXPORT_SYMBOL(ath6kl_core_init);
266
ath6kl_core_create(struct device * dev)267 struct ath6kl *ath6kl_core_create(struct device *dev)
268 {
269 struct ath6kl *ar;
270 u8 ctr;
271
272 ar = ath6kl_cfg80211_create();
273 if (!ar)
274 return NULL;
275
276 ar->p2p = !!ath6kl_p2p;
277 ar->dev = dev;
278
279 ar->vif_max = 1;
280
281 ar->max_norm_iface = 1;
282
283 spin_lock_init(&ar->lock);
284 spin_lock_init(&ar->mcastpsq_lock);
285 spin_lock_init(&ar->list_lock);
286
287 init_waitqueue_head(&ar->event_wq);
288 sema_init(&ar->sem, 1);
289
290 INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
291 INIT_LIST_HEAD(&ar->vif_list);
292
293 clear_bit(WMI_ENABLED, &ar->flag);
294 clear_bit(SKIP_SCAN, &ar->flag);
295 clear_bit(DESTROY_IN_PROGRESS, &ar->flag);
296
297 ar->tx_pwr = 0;
298 ar->intra_bss = 1;
299 ar->lrssi_roam_threshold = DEF_LRSSI_ROAM_THRESHOLD;
300
301 ar->state = ATH6KL_STATE_OFF;
302
303 memset((u8 *)ar->sta_list, 0,
304 AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));
305
306 /* Init the PS queues */
307 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
308 spin_lock_init(&ar->sta_list[ctr].psq_lock);
309 skb_queue_head_init(&ar->sta_list[ctr].psq);
310 skb_queue_head_init(&ar->sta_list[ctr].apsdq);
311 ar->sta_list[ctr].mgmt_psq_len = 0;
312 INIT_LIST_HEAD(&ar->sta_list[ctr].mgmt_psq);
313 ar->sta_list[ctr].aggr_conn =
314 kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL);
315 if (!ar->sta_list[ctr].aggr_conn) {
316 ath6kl_err("Failed to allocate memory for sta aggregation information\n");
317 ath6kl_core_destroy(ar);
318 return NULL;
319 }
320 }
321
322 skb_queue_head_init(&ar->mcastpsq);
323
324 memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);
325
326 return ar;
327 }
328 EXPORT_SYMBOL(ath6kl_core_create);
329
ath6kl_core_cleanup(struct ath6kl * ar)330 void ath6kl_core_cleanup(struct ath6kl *ar)
331 {
332 ath6kl_hif_power_off(ar);
333
334 ath6kl_recovery_cleanup(ar);
335
336 destroy_workqueue(ar->ath6kl_wq);
337
338 if (ar->htc_target)
339 ath6kl_htc_cleanup(ar->htc_target);
340
341 ath6kl_cookie_cleanup(ar);
342
343 ath6kl_cleanup_amsdu_rxbufs(ar);
344
345 ath6kl_bmi_cleanup(ar);
346
347 ath6kl_debug_cleanup(ar);
348
349 kfree(ar->fw_board);
350 kfree(ar->fw_otp);
351 vfree(ar->fw);
352 kfree(ar->fw_patch);
353 kfree(ar->fw_testscript);
354
355 ath6kl_cfg80211_cleanup(ar);
356 }
357 EXPORT_SYMBOL(ath6kl_core_cleanup);
358
ath6kl_core_destroy(struct ath6kl * ar)359 void ath6kl_core_destroy(struct ath6kl *ar)
360 {
361 ath6kl_cfg80211_destroy(ar);
362 }
363 EXPORT_SYMBOL(ath6kl_core_destroy);
364
365 MODULE_AUTHOR("Qualcomm Atheros");
366 MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
367 MODULE_LICENSE("Dual BSD/GPL");
368