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
30unsigned int debug_mask;
31static unsigned int suspend_mode;
32static unsigned int wow_mode;
33static unsigned int uart_debug;
34static unsigned int ath6kl_p2p;
35static unsigned int testmode;
36static unsigned int recovery_enable;
37static unsigned int heart_beat_poll;
38
39module_param(debug_mask, uint, 0644);
40module_param(suspend_mode, uint, 0644);
41module_param(wow_mode, uint, 0644);
42module_param(uart_debug, uint, 0644);
43module_param(ath6kl_p2p, uint, 0644);
44module_param(testmode, uint, 0644);
45module_param(recovery_enable, uint, 0644);
46module_param(heart_beat_poll, uint, 0644);
47MODULE_PARM_DESC(recovery_enable, "Enable recovery from firmware error");
48MODULE_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
52void ath6kl_core_tx_complete(struct ath6kl *ar, struct sk_buff *skb)
53{
54	ath6kl_htc_tx_complete(ar, skb);
55}
56EXPORT_SYMBOL(ath6kl_core_tx_complete);
57
58void ath6kl_core_rx_complete(struct ath6kl *ar, struct sk_buff *skb, u8 pipe)
59{
60	ath6kl_htc_rx_complete(ar, skb, pipe);
61}
62EXPORT_SYMBOL(ath6kl_core_rx_complete);
63
64int 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
242err_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;
249err_htc_cleanup:
250	ath6kl_htc_cleanup(ar->htc_target);
251err_power_off:
252	ath6kl_hif_power_off(ar);
253err_bmi_cleanup:
254	ath6kl_bmi_cleanup(ar);
255err_wq:
256	destroy_workqueue(ar->ath6kl_wq);
257
258	return ret;
259}
260EXPORT_SYMBOL(ath6kl_core_init);
261
262struct 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}
323EXPORT_SYMBOL(ath6kl_core_create);
324
325void 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}
352EXPORT_SYMBOL(ath6kl_core_cleanup);
353
354void ath6kl_core_destroy(struct ath6kl *ar)
355{
356	ath6kl_cfg80211_destroy(ar);
357}
358EXPORT_SYMBOL(ath6kl_core_destroy);
359
360MODULE_AUTHOR("Qualcomm Atheros");
361MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
362MODULE_LICENSE("Dual BSD/GPL");
363