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
ath6kl_core_init(struct ath6kl * ar)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
ath6kl_core_create(struct device * dev)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
ath6kl_core_cleanup(struct ath6kl * ar)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
ath6kl_core_destroy(struct ath6kl * ar)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");
300