summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/cw1200/cw1200.h
blob: 1ad7d36025200024b0c038c9c21ed1a77e34c07f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
/*
 * Common private data for ST-Ericsson CW1200 drivers
 *
 * Copyright (c) 2010, ST-Ericsson
 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
 *
 * Based on the mac80211 Prism54 code, which is
 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
 *
 * Based on the islsm (softmac prism54) driver, which is:
 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef CW1200_H
#define CW1200_H

#include <linux/wait.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
#include <net/mac80211.h>

#include "queue.h"
#include "wsm.h"
#include "scan.h"
#include "txrx.h"
#include "pm.h"

/* Forward declarations */
struct hwbus_ops;
struct task_struct;
struct cw1200_debug_priv;
struct firmware;

#define CW1200_MAX_CTRL_FRAME_LEN	(0x1000)

#define CW1200_MAX_STA_IN_AP_MODE	(5)
#define CW1200_LINK_ID_AFTER_DTIM	(CW1200_MAX_STA_IN_AP_MODE + 1)
#define CW1200_LINK_ID_UAPSD		(CW1200_MAX_STA_IN_AP_MODE + 2)
#define CW1200_LINK_ID_MAX		(CW1200_MAX_STA_IN_AP_MODE + 3)
#define CW1200_MAX_REQUEUE_ATTEMPTS	(5)

#define CW1200_MAX_TID			(8)

#define CW1200_BLOCK_ACK_CNT		(30)
#define CW1200_BLOCK_ACK_THLD		(800)
#define CW1200_BLOCK_ACK_HIST		(3)
#define CW1200_BLOCK_ACK_INTERVAL	(1 * HZ / CW1200_BLOCK_ACK_HIST)

#define CW1200_JOIN_TIMEOUT		(1 * HZ)
#define CW1200_AUTH_TIMEOUT		(5 * HZ)

struct cw1200_ht_info {
	struct ieee80211_sta_ht_cap     ht_cap;
	enum nl80211_channel_type       channel_type;
	u16                             operation_mode;
};

/* Please keep order */
enum cw1200_join_status {
	CW1200_JOIN_STATUS_PASSIVE = 0,
	CW1200_JOIN_STATUS_MONITOR,
	CW1200_JOIN_STATUS_JOINING,
	CW1200_JOIN_STATUS_PRE_STA,
	CW1200_JOIN_STATUS_STA,
	CW1200_JOIN_STATUS_IBSS,
	CW1200_JOIN_STATUS_AP,
};

enum cw1200_link_status {
	CW1200_LINK_OFF,
	CW1200_LINK_RESERVE,
	CW1200_LINK_SOFT,
	CW1200_LINK_HARD,
	CW1200_LINK_RESET,
	CW1200_LINK_RESET_REMAP,
};

extern int cw1200_power_mode;
extern const char * const cw1200_fw_types[];

struct cw1200_link_entry {
	unsigned long			timestamp;
	enum cw1200_link_status		status;
	enum cw1200_link_status		prev_status;
	u8				mac[ETH_ALEN];
	u8				buffered[CW1200_MAX_TID];
	struct sk_buff_head		rx_queue;
};

struct cw1200_common {
	/* interfaces to the rest of the stack */
	struct ieee80211_hw		*hw;
	struct ieee80211_vif		*vif;
	struct device			*pdev;

	/* Statistics */
	struct ieee80211_low_level_stats stats;

	/* Our macaddr */
	u8 mac_addr[ETH_ALEN];

	/* Hardware interface */
	const struct hwbus_ops		*hwbus_ops;
	struct hwbus_priv		*hwbus_priv;

	/* Hardware information */
	enum {
		HIF_9000_SILICON_VERSATILE = 0,
		HIF_8601_VERSATILE,
		HIF_8601_SILICON,
	} hw_type;
	enum {
		CW1200_HW_REV_CUT10 = 10,
		CW1200_HW_REV_CUT11 = 11,
		CW1200_HW_REV_CUT20 = 20,
		CW1200_HW_REV_CUT22 = 22,
		CW1X60_HW_REV       = 40,
	} hw_revision;
	int                             hw_refclk;
	bool				hw_have_5ghz;
	const struct firmware		*sdd;
	char                            *sdd_path;

	struct cw1200_debug_priv	*debug;

	struct workqueue_struct		*workqueue;
	struct mutex			conf_mutex;

	struct cw1200_queue		tx_queue[4];
	struct cw1200_queue_stats	tx_queue_stats;
	int				tx_burst_idx;

	/* firmware/hardware info */
	unsigned int tx_hdr_len;

	/* Radio data */
	int output_power;

	/* BBP/MAC state */
	struct ieee80211_rate		*rates;
	struct ieee80211_rate		*mcs_rates;
	struct ieee80211_channel	*channel;
	struct wsm_edca_params		edca;
	struct wsm_tx_queue_params	tx_queue_params;
	struct wsm_mib_association_mode	association_mode;
	struct wsm_set_bss_params	bss_params;
	struct cw1200_ht_info		ht_info;
	struct wsm_set_pm		powersave_mode;
	struct wsm_set_pm		firmware_ps_mode;
	int				cqm_rssi_thold;
	unsigned			cqm_rssi_hyst;
	bool				cqm_use_rssi;
	int				cqm_beacon_loss_count;
	int				channel_switch_in_progress;
	wait_queue_head_t		channel_switch_done;
	u8				long_frame_max_tx_count;
	u8				short_frame_max_tx_count;
	int				mode;
	bool				enable_beacon;
	int				beacon_int;
	bool				listening;
	struct wsm_rx_filter		rx_filter;
	struct wsm_mib_multicast_filter multicast_filter;
	bool				has_multicast_subscription;
	bool				disable_beacon_filter;
	struct work_struct		update_filtering_work;
	struct work_struct		set_beacon_wakeup_period_work;

	u8				ba_rx_tid_mask;
	u8				ba_tx_tid_mask;

	struct cw1200_pm_state		pm_state;

	struct wsm_p2p_ps_modeinfo	p2p_ps_modeinfo;
	struct wsm_uapsd_info		uapsd_info;
	bool				setbssparams_done;
	bool				bt_present;
	u8				conf_listen_interval;
	u32				listen_interval;
	u32				erp_info;
	u32				rts_threshold;

	/* BH */
	atomic_t			bh_rx;
	atomic_t			bh_tx;
	atomic_t			bh_term;
	atomic_t			bh_suspend;

	struct workqueue_struct         *bh_workqueue;
	struct work_struct              bh_work;

	int				bh_error;
	wait_queue_head_t		bh_wq;
	wait_queue_head_t		bh_evt_wq;
	u8				buf_id_tx;
	u8				buf_id_rx;
	u8				wsm_rx_seq;
	u8				wsm_tx_seq;
	int				hw_bufs_used;
	bool				powersave_enabled;
	bool				device_can_sleep;

	/* Scan status */
	struct cw1200_scan scan;
	/* Keep cw1200 awake (WUP = 1) 1 second after each scan to avoid
	 * FW issue with sleeping/waking up.
	 */
	atomic_t			recent_scan;
	struct delayed_work		clear_recent_scan_work;

	/* WSM */
	struct wsm_startup_ind		wsm_caps;
	struct mutex			wsm_cmd_mux;
	struct wsm_buf			wsm_cmd_buf;
	struct wsm_cmd			wsm_cmd;
	wait_queue_head_t		wsm_cmd_wq;
	wait_queue_head_t		wsm_startup_done;
	int                             firmware_ready;
	atomic_t			tx_lock;

	/* WSM debug */
	int				wsm_enable_wsm_dumps;

	/* WSM Join */
	enum cw1200_join_status	join_status;
	u32			pending_frame_id;
	bool			join_pending;
	struct delayed_work	join_timeout;
	struct work_struct	unjoin_work;
	struct work_struct	join_complete_work;
	int			join_complete_status;
	int			join_dtim_period;
	bool			delayed_unjoin;

	/* TX/RX and security */
	s8			wep_default_key_id;
	struct work_struct	wep_key_work;
	u32			key_map;
	struct wsm_add_key	keys[WSM_KEY_MAX_INDEX + 1];

	/* AP powersave */
	u32			link_id_map;
	struct cw1200_link_entry link_id_db[CW1200_MAX_STA_IN_AP_MODE];
	struct work_struct	link_id_work;
	struct delayed_work	link_id_gc_work;
	u32			sta_asleep_mask;
	u32			pspoll_mask;
	bool			aid0_bit_set;
	spinlock_t		ps_state_lock; /* Protect power save state */
	bool			buffered_multicasts;
	bool			tx_multicast;
	struct work_struct	set_tim_work;
	struct work_struct	set_cts_work;
	struct work_struct	multicast_start_work;
	struct work_struct	multicast_stop_work;
	struct timer_list	mcast_timeout;

	/* WSM events and CQM implementation */
	spinlock_t		event_queue_lock; /* Protect event queue */
	struct list_head	event_queue;
	struct work_struct	event_handler;

	struct delayed_work	bss_loss_work;
	spinlock_t		bss_loss_lock; /* Protect BSS loss state */
	int                     bss_loss_state;
	u32                     bss_loss_confirm_id;
	int			delayed_link_loss;
	struct work_struct	bss_params_work;

	/* TX rate policy cache */
	struct tx_policy_cache tx_policy_cache;
	struct work_struct tx_policy_upload_work;

	/* legacy PS mode switch in suspend */
	int			ps_mode_switch_in_progress;
	wait_queue_head_t	ps_mode_switch_done;

	/* Workaround for WFD testcase 6.1.10*/
	struct work_struct	linkid_reset_work;
	u8			action_frame_sa[ETH_ALEN];
	u8			action_linkid;
};

struct cw1200_sta_priv {
	int link_id;
};

/* interfaces for the drivers */
int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
		      struct hwbus_priv *hwbus,
		      struct device *pdev,
		      struct cw1200_common **pself,
		      int ref_clk, const u8 *macaddr,
		      const char *sdd_path, bool have_5ghz);
void cw1200_core_release(struct cw1200_common *self);

#define FWLOAD_BLOCK_SIZE (1024)

static inline int cw1200_is_ht(const struct cw1200_ht_info *ht_info)
{
	return ht_info->channel_type != NL80211_CHAN_NO_HT;
}

static inline int cw1200_ht_greenfield(const struct cw1200_ht_info *ht_info)
{
	return cw1200_is_ht(ht_info) &&
		(ht_info->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD) &&
		!(ht_info->operation_mode &
		  IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
}

static inline int cw1200_ht_ampdu_density(const struct cw1200_ht_info *ht_info)
{
	if (!cw1200_is_ht(ht_info))
		return 0;
	return ht_info->ht_cap.ampdu_density;
}

#endif /* CW1200_H */