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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
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, "Enable fw error detection periodic" \
49 "polling. This also specifies the polling interval in" \
50 "msecs. Set reocvery_enable for this to be effective");
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 /* Indicate that WMI is enabled (although not ready yet) */
127 set_bit(WMI_ENABLED, &ar->flag);
128 ar->wmi = ath6kl_wmi_init(ar);
129 if (!ar->wmi) {
130 ath6kl_err("failed to initialize wmi\n");
131 ret = -EIO;
132 goto err_htc_cleanup;
133 }
134
135 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi);
136
137 /* setup access class priority mappings */
138 ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest */
139 ar->ac_stream_pri_map[WMM_AC_BE] = 1;
140 ar->ac_stream_pri_map[WMM_AC_VI] = 2;
141 ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */
142
143 /* allocate some buffers that handle larger AMSDU frames */
144 ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS);
145
146 ath6kl_cookie_init(ar);
147
148 ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
149 ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
150
151 if (suspend_mode &&
152 suspend_mode >= WLAN_POWER_STATE_CUT_PWR &&
153 suspend_mode <= WLAN_POWER_STATE_WOW)
154 ar->suspend_mode = suspend_mode;
155 else
156 ar->suspend_mode = 0;
157
158 if (suspend_mode == WLAN_POWER_STATE_WOW &&
159 (wow_mode == WLAN_POWER_STATE_CUT_PWR ||
160 wow_mode == WLAN_POWER_STATE_DEEP_SLEEP))
161 ar->wow_suspend_mode = wow_mode;
162 else
163 ar->wow_suspend_mode = 0;
164
165 if (uart_debug)
166 ar->conf_flags |= ATH6KL_CONF_UART_DEBUG;
167
168 set_bit(FIRST_BOOT, &ar->flag);
169
170 ath6kl_debug_init(ar);
171
172 ret = ath6kl_init_hw_start(ar);
173 if (ret) {
174 ath6kl_err("Failed to start hardware: %d\n", ret);
175 goto err_rxbuf_cleanup;
176 }
177
178 /* give our connected endpoints some buffers */
179 ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep);
180 ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]);
181
182 ret = ath6kl_cfg80211_init(ar);
183 if (ret)
184 goto err_rxbuf_cleanup;
185
186 ret = ath6kl_debug_init_fs(ar);
187 if (ret) {
188 wiphy_unregister(ar->wiphy);
189 goto err_rxbuf_cleanup;
190 }
191
192 for (i = 0; i < ar->vif_max; i++)
193 ar->avail_idx_map |= BIT(i);
194
195 rtnl_lock();
196
197 /* Add an initial station interface */
198 wdev = ath6kl_interface_add(ar, "wlan%d", NL80211_IFTYPE_STATION, 0,
199 INFRA_NETWORK);
200
201 rtnl_unlock();
202
203 if (!wdev) {
204 ath6kl_err("Failed to instantiate a network device\n");
205 ret = -ENOMEM;
206 wiphy_unregister(ar->wiphy);
207 goto err_rxbuf_cleanup;
208 }
209
210 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n",
211 __func__, wdev->netdev->name, wdev->netdev, ar);
212
213 ar->fw_recovery.enable = !!recovery_enable;
214 if (!ar->fw_recovery.enable)
215 return ret;
216
217 if (heart_beat_poll &&
218 test_bit(ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL,
219 ar->fw_capabilities))
220 ar->fw_recovery.hb_poll = heart_beat_poll;
221
222 ath6kl_recovery_init(ar);
223
224 return ret;
225
226err_rxbuf_cleanup:
227 ath6kl_debug_cleanup(ar);
228 ath6kl_htc_flush_rx_buf(ar->htc_target);
229 ath6kl_cleanup_amsdu_rxbufs(ar);
230 ath6kl_wmi_shutdown(ar->wmi);
231 clear_bit(WMI_ENABLED, &ar->flag);
232 ar->wmi = NULL;
233err_htc_cleanup:
234 ath6kl_htc_cleanup(ar->htc_target);
235err_power_off:
236 ath6kl_hif_power_off(ar);
237err_bmi_cleanup:
238 ath6kl_bmi_cleanup(ar);
239err_wq:
240 destroy_workqueue(ar->ath6kl_wq);
241
242 return ret;
243}
244EXPORT_SYMBOL(ath6kl_core_init);
245
246struct ath6kl *ath6kl_core_create(struct device *dev)
247{
248 struct ath6kl *ar;
249 u8 ctr;
250
251 ar = ath6kl_cfg80211_create();
252 if (!ar)
253 return NULL;
254
255 ar->p2p = !!ath6kl_p2p;
256 ar->dev = dev;
257
258 ar->vif_max = 1;
259
260 ar->max_norm_iface = 1;
261
262 spin_lock_init(&ar->lock);
263 spin_lock_init(&ar->mcastpsq_lock);
264 spin_lock_init(&ar->list_lock);
265
266 init_waitqueue_head(&ar->event_wq);
267 sema_init(&ar->sem, 1);
268
269 INIT_LIST_HEAD(&ar->amsdu_rx_buffer_queue);
270 INIT_LIST_HEAD(&ar->vif_list);
271
272 clear_bit(WMI_ENABLED, &ar->flag);
273 clear_bit(SKIP_SCAN, &ar->flag);
274 clear_bit(DESTROY_IN_PROGRESS, &ar->flag);
275
276 ar->tx_pwr = 0;
277 ar->intra_bss = 1;
278 ar->lrssi_roam_threshold = DEF_LRSSI_ROAM_THRESHOLD;
279
280 ar->state = ATH6KL_STATE_OFF;
281
282 memset((u8 *)ar->sta_list, 0,
283 AP_MAX_NUM_STA * sizeof(struct ath6kl_sta));
284
285 /* Init the PS queues */
286 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
287 spin_lock_init(&ar->sta_list[ctr].psq_lock);
288 skb_queue_head_init(&ar->sta_list[ctr].psq);
289 skb_queue_head_init(&ar->sta_list[ctr].apsdq);
290 ar->sta_list[ctr].mgmt_psq_len = 0;
291 INIT_LIST_HEAD(&ar->sta_list[ctr].mgmt_psq);
292 ar->sta_list[ctr].aggr_conn =
293 kzalloc(sizeof(struct aggr_info_conn), GFP_KERNEL);
294 if (!ar->sta_list[ctr].aggr_conn) {
295 ath6kl_err("Failed to allocate memory for sta aggregation information\n");
296 ath6kl_core_destroy(ar);
297 return NULL;
298 }
299 }
300
301 skb_queue_head_init(&ar->mcastpsq);
302
303 memcpy(ar->ap_country_code, DEF_AP_COUNTRY_CODE, 3);
304
305 return ar;
306}
307EXPORT_SYMBOL(ath6kl_core_create);
308
309void ath6kl_core_cleanup(struct ath6kl *ar)
310{
311 ath6kl_hif_power_off(ar);
312
313 ath6kl_recovery_cleanup(ar);
314
315 destroy_workqueue(ar->ath6kl_wq);
316
317 if (ar->htc_target)
318 ath6kl_htc_cleanup(ar->htc_target);
319
320 ath6kl_cookie_cleanup(ar);
321
322 ath6kl_cleanup_amsdu_rxbufs(ar);
323
324 ath6kl_bmi_cleanup(ar);
325
326 ath6kl_debug_cleanup(ar);
327
328 kfree(ar->fw_board);
329 kfree(ar->fw_otp);
330 vfree(ar->fw);
331 kfree(ar->fw_patch);
332 kfree(ar->fw_testscript);
333
334 ath6kl_cfg80211_cleanup(ar);
335}
336EXPORT_SYMBOL(ath6kl_core_cleanup);
337
338void ath6kl_core_destroy(struct ath6kl *ar)
339{
340 ath6kl_cfg80211_destroy(ar);
341}
342EXPORT_SYMBOL(ath6kl_core_destroy);
343
344MODULE_AUTHOR("Qualcomm Atheros");
345MODULE_DESCRIPTION("Core module for AR600x SDIO and USB devices.");
346MODULE_LICENSE("Dual BSD/GPL");