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1 /*
2  * Copyright (c) 2014 Redpine Signals Inc.
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #ifndef __RSI_MAIN_H__
18 #define __RSI_MAIN_H__
19 
20 #include <linux/string.h>
21 #include <linux/skbuff.h>
22 #include <net/mac80211.h>
23 #include <net/rsi_91x.h>
24 
25 struct rsi_sta {
26 	struct ieee80211_sta *sta;
27 	s16 sta_id;
28 	u16 seq_start[IEEE80211_NUM_TIDS];
29 	bool start_tx_aggr[IEEE80211_NUM_TIDS];
30 };
31 
32 struct rsi_hw;
33 
34 #include "rsi_ps.h"
35 
36 #define ERR_ZONE                        BIT(0)  /* For Error Msgs             */
37 #define INFO_ZONE                       BIT(1)  /* For General Status Msgs    */
38 #define INIT_ZONE                       BIT(2)  /* For Driver Init Seq Msgs   */
39 #define MGMT_TX_ZONE                    BIT(3)  /* For TX Mgmt Path Msgs      */
40 #define MGMT_RX_ZONE                    BIT(4)  /* For RX Mgmt Path Msgs      */
41 #define DATA_TX_ZONE                    BIT(5)  /* For TX Data Path Msgs      */
42 #define DATA_RX_ZONE                    BIT(6)  /* For RX Data Path Msgs      */
43 #define FSM_ZONE                        BIT(7)  /* For State Machine Msgs     */
44 #define ISR_ZONE                        BIT(8)  /* For Interrupt Msgs         */
45 
46 enum RSI_FSM_STATES {
47 	FSM_FW_NOT_LOADED,
48 	FSM_CARD_NOT_READY,
49 	FSM_COMMON_DEV_PARAMS_SENT,
50 	FSM_BOOT_PARAMS_SENT,
51 	FSM_EEPROM_READ_MAC_ADDR,
52 	FSM_EEPROM_READ_RF_TYPE,
53 	FSM_RESET_MAC_SENT,
54 	FSM_RADIO_CAPS_SENT,
55 	FSM_BB_RF_PROG_SENT,
56 	FSM_MAC_INIT_DONE,
57 
58 	NUM_FSM_STATES
59 };
60 
61 extern u32 rsi_zone_enabled;
62 extern __printf(2, 3) void rsi_dbg(u32 zone, const char *fmt, ...);
63 
64 #define RSI_MAX_BANDS			2
65 #define RSI_MAX_VIFS                    3
66 #define NUM_EDCA_QUEUES                 4
67 #define IEEE80211_ADDR_LEN              6
68 #define FRAME_DESC_SZ                   16
69 #define MIN_802_11_HDR_LEN              24
70 #define RSI_DEF_KEEPALIVE               90
71 #define RSI_WOW_KEEPALIVE                5
72 #define RSI_BCN_MISS_THRESHOLD           24
73 
74 #define DATA_QUEUE_WATER_MARK           400
75 #define MIN_DATA_QUEUE_WATER_MARK       300
76 #define MULTICAST_WATER_MARK            200
77 #define MAC_80211_HDR_FRAME_CONTROL     0
78 #define WME_NUM_AC                      4
79 #define NUM_SOFT_QUEUES                 6
80 #define MAX_HW_QUEUES                   12
81 #define INVALID_QUEUE                   0xff
82 #define MAX_CONTINUOUS_VO_PKTS          8
83 #define MAX_CONTINUOUS_VI_PKTS          4
84 
85 /* Hardware queue info */
86 #define BROADCAST_HW_Q			9
87 #define MGMT_HW_Q			10
88 #define BEACON_HW_Q			11
89 
90 #define IEEE80211_MGMT_FRAME            0x00
91 #define IEEE80211_CTL_FRAME             0x04
92 
93 #define RSI_MAX_ASSOC_STAS		32
94 #define IEEE80211_QOS_TID               0x0f
95 #define IEEE80211_NONQOS_TID            16
96 
97 #define MAX_DEBUGFS_ENTRIES             4
98 
99 #define TID_TO_WME_AC(_tid) (      \
100 	((_tid) == 0 || (_tid) == 3) ? BE_Q : \
101 	((_tid) < 3) ? BK_Q : \
102 	((_tid) < 6) ? VI_Q : \
103 	VO_Q)
104 
105 #define WME_AC(_q) (    \
106 	((_q) == BK_Q) ? IEEE80211_AC_BK : \
107 	((_q) == BE_Q) ? IEEE80211_AC_BE : \
108 	((_q) == VI_Q) ? IEEE80211_AC_VI : \
109 	IEEE80211_AC_VO)
110 
111 /* WoWLAN flags */
112 #define RSI_WOW_ENABLED			BIT(0)
113 #define RSI_WOW_NO_CONNECTION		BIT(1)
114 
115 #define RSI_MAX_RX_PKTS		64
116 
117 enum rsi_dev_model {
118 	RSI_DEV_9113 = 0,
119 	RSI_DEV_9116
120 };
121 
122 struct version_info {
123 	u16 major;
124 	u16 minor;
125 	u8 release_num;
126 	u8 patch_num;
127 	union {
128 		struct {
129 			u8 fw_ver[8];
130 		} info;
131 	} ver;
132 } __packed;
133 
134 struct skb_info {
135 	s8 rssi;
136 	u32 flags;
137 	u16 channel;
138 	s8 tid;
139 	s8 sta_id;
140 	u8 internal_hdr_size;
141 	struct ieee80211_vif *vif;
142 	u8 vap_id;
143 	bool have_key;
144 };
145 
146 enum edca_queue {
147 	BK_Q,
148 	BE_Q,
149 	VI_Q,
150 	VO_Q,
151 	MGMT_SOFT_Q,
152 	MGMT_BEACON_Q
153 };
154 
155 struct security_info {
156 	u32 ptk_cipher;
157 	u32 gtk_cipher;
158 };
159 
160 struct wmm_qinfo {
161 	s32 weight;
162 	s32 wme_params;
163 	s32 pkt_contended;
164 	s32 txop;
165 };
166 
167 struct transmit_q_stats {
168 	u32 total_tx_pkt_send[NUM_EDCA_QUEUES + 2];
169 	u32 total_tx_pkt_freed[NUM_EDCA_QUEUES + 2];
170 };
171 
172 #define MAX_BGSCAN_CHANNELS_DUAL_BAND	38
173 #define MAX_BGSCAN_PROBE_REQ_LEN	0x64
174 #define RSI_DEF_BGSCAN_THRLD		0x0
175 #define RSI_DEF_ROAM_THRLD		0xa
176 #define RSI_BGSCAN_PERIODICITY		0x1e
177 #define RSI_ACTIVE_SCAN_TIME		0x14
178 #define RSI_PASSIVE_SCAN_TIME		0x46
179 #define RSI_CHANNEL_SCAN_TIME		20
180 struct rsi_bgscan_params {
181 	u16 bgscan_threshold;
182 	u16 roam_threshold;
183 	u16 bgscan_periodicity;
184 	u8 num_bgscan_channels;
185 	u8 two_probe;
186 	u16 active_scan_duration;
187 	u16 passive_scan_duration;
188 };
189 
190 struct vif_priv {
191 	bool is_ht;
192 	bool sgi;
193 	u16 seq_start;
194 	int vap_id;
195 };
196 
197 struct rsi_event {
198 	atomic_t event_condition;
199 	wait_queue_head_t event_queue;
200 };
201 
202 struct rsi_thread {
203 	void (*thread_function)(void *);
204 	struct completion completion;
205 	struct task_struct *task;
206 	struct rsi_event event;
207 	atomic_t thread_done;
208 };
209 
210 struct cqm_info {
211 	s8 last_cqm_event_rssi;
212 	int rssi_thold;
213 	u32 rssi_hyst;
214 };
215 
216 enum rsi_dfs_regions {
217 	RSI_REGION_FCC = 0,
218 	RSI_REGION_ETSI,
219 	RSI_REGION_TELEC,
220 	RSI_REGION_WORLD
221 };
222 
223 struct rsi_9116_features {
224 	u8 pll_mode;
225 	u8 rf_type;
226 	u8 wireless_mode;
227 	u8 afe_type;
228 	u8 enable_ppe;
229 	u8 dpd;
230 	u32 sifs_tx_enable;
231 	u32 ps_options;
232 };
233 
234 struct rsi_rate_config {
235 	u32 configured_mask;	/* configured by mac80211 bits 0-11=legacy 12+ mcs */
236 	u16 fixed_hw_rate;
237 	bool fixed_enabled;
238 };
239 
240 struct rsi_common {
241 	struct rsi_hw *priv;
242 	struct vif_priv vif_info[RSI_MAX_VIFS];
243 
244 	void *coex_cb;
245 	bool mgmt_q_block;
246 	struct version_info lmac_ver;
247 
248 	struct rsi_thread tx_thread;
249 	struct sk_buff_head tx_queue[NUM_EDCA_QUEUES + 2];
250 	struct completion wlan_init_completion;
251 	/* Mutex declaration */
252 	struct mutex mutex;
253 	/* Mutex used for tx thread */
254 	struct mutex tx_lock;
255 	/* Mutex used for rx thread */
256 	struct mutex rx_lock;
257 	u8 endpoint;
258 
259 	/* Channel/band related */
260 	u8 band;
261 	u8 num_supp_bands;
262 	u8 channel_width;
263 
264 	u16 rts_threshold;
265 	u32 bitrate_mask[RSI_MAX_BANDS];
266 	struct rsi_rate_config rate_config[RSI_MAX_BANDS];
267 
268 	u8 rf_reset;
269 	struct transmit_q_stats tx_stats;
270 	struct security_info secinfo;
271 	struct wmm_qinfo tx_qinfo[NUM_EDCA_QUEUES];
272 	struct ieee80211_tx_queue_params edca_params[NUM_EDCA_QUEUES];
273 	u8 mac_addr[IEEE80211_ADDR_LEN];
274 
275 	/* state related */
276 	u32 fsm_state;
277 	bool init_done;
278 	u8 bb_rf_prog_count;
279 	bool iface_down;
280 
281 	/* Generic */
282 	u8 channel;
283 	u8 *rx_data_pkt;
284 	u8 mac_id;
285 	u8 radio_id;
286 	u16 rate_pwr[20];
287 
288 	/* WMM algo related */
289 	u8 selected_qnum;
290 	u32 pkt_cnt;
291 	u8 min_weight;
292 
293 	/* bgscan related */
294 	struct cqm_info cqm_info;
295 
296 	bool hw_data_qs_blocked;
297 	u8 driver_mode;
298 	u8 coex_mode;
299 	u16 oper_mode;
300 	u8 lp_ps_handshake_mode;
301 	u8 ulp_ps_handshake_mode;
302 	u8 uapsd_bitmap;
303 	u8 rf_power_val;
304 	u8 wlan_rf_power_mode;
305 	u8 obm_ant_sel_val;
306 	int tx_power;
307 	u8 ant_in_use;
308 	/* Mutex used for writing packet to bus */
309 	struct mutex tx_bus_mutex;
310 	bool hibernate_resume;
311 	bool reinit_hw;
312 	u8 wow_flags;
313 	u16 beacon_interval;
314 	u8 dtim_cnt;
315 
316 	/* AP mode parameters */
317 	u8 beacon_enabled;
318 	u16 beacon_cnt;
319 	struct rsi_sta stations[RSI_MAX_ASSOC_STAS + 1];
320 	int num_stations;
321 	int max_stations;
322 	struct ieee80211_key_conf *key;
323 
324 	/* Wi-Fi direct mode related */
325 	bool p2p_enabled;
326 	struct timer_list roc_timer;
327 	struct ieee80211_vif *roc_vif;
328 
329 	bool eapol4_confirm;
330 	bool bt_defer_attach;
331 	void *bt_adapter;
332 
333 	struct cfg80211_scan_request *hwscan;
334 	struct rsi_bgscan_params bgscan;
335 	struct rsi_9116_features w9116_features;
336 	u8 bgscan_en;
337 	u8 mac_ops_resumed;
338 };
339 
340 struct eepromrw_info {
341 	u32 offset;
342 	u32 length;
343 	u8  write;
344 	u16 eeprom_erase;
345 	u8 data[480];
346 };
347 
348 struct eeprom_read {
349 	u16 length;
350 	u16 off_set;
351 };
352 
353 struct rsi_hw {
354 	struct rsi_common *priv;
355 	enum rsi_dev_model device_model;
356 	struct ieee80211_hw *hw;
357 	struct ieee80211_vif *vifs[RSI_MAX_VIFS];
358 	struct ieee80211_tx_queue_params edca_params[NUM_EDCA_QUEUES];
359 	struct ieee80211_supported_band sbands[NUM_NL80211_BANDS];
360 
361 	struct device *device;
362 	u8 sc_nvifs;
363 
364 	enum rsi_host_intf rsi_host_intf;
365 	u16 block_size;
366 	enum ps_state ps_state;
367 	struct rsi_ps_info ps_info;
368 	spinlock_t ps_lock; /*To protect power save config*/
369 	u32 usb_buffer_status_reg;
370 #ifdef CONFIG_RSI_DEBUGFS
371 	struct rsi_debugfs *dfsentry;
372 	u8 num_debugfs_entries;
373 #endif
374 	char *fw_file_name;
375 	struct timer_list bl_cmd_timer;
376 	bool blcmd_timer_expired;
377 	u32 flash_capacity;
378 	struct eepromrw_info eeprom;
379 	u32 interrupt_status;
380 	u8 dfs_region;
381 	char country[2];
382 	void *rsi_dev;
383 	struct rsi_host_intf_ops *host_intf_ops;
384 	int (*check_hw_queue_status)(struct rsi_hw *adapter, u8 q_num);
385 	int (*determine_event_timeout)(struct rsi_hw *adapter);
386 };
387 
388 void rsi_print_version(struct rsi_common *common);
389 
390 struct rsi_host_intf_ops {
391 	int (*read_pkt)(struct rsi_hw *adapter, u8 *pkt, u32 len);
392 	int (*write_pkt)(struct rsi_hw *adapter, u8 *pkt, u32 len);
393 	int (*master_access_msword)(struct rsi_hw *adapter, u16 ms_word);
394 	int (*read_reg_multiple)(struct rsi_hw *adapter, u32 addr,
395 				 u8 *data, u16 count);
396 	int (*write_reg_multiple)(struct rsi_hw *adapter, u32 addr,
397 				  u8 *data, u16 count);
398 	int (*master_reg_read)(struct rsi_hw *adapter, u32 addr,
399 			       u32 *read_buf, u16 size);
400 	int (*master_reg_write)(struct rsi_hw *adapter,
401 				unsigned long addr, unsigned long data,
402 				u16 size);
403 	int (*load_data_master_write)(struct rsi_hw *adapter, u32 addr,
404 				      u32 instructions_size, u16 block_size,
405 				      u8 *fw);
406 	int (*reinit_device)(struct rsi_hw *adapter);
407 	int (*ta_reset)(struct rsi_hw *adapter);
408 };
409 
410 enum rsi_host_intf rsi_get_host_intf(void *priv);
411 void rsi_set_bt_context(void *priv, void *bt_context);
412 void rsi_attach_bt(struct rsi_common *common);
413 
414 #endif
415