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_VIFS                    3
65 #define NUM_EDCA_QUEUES                 4
66 #define IEEE80211_ADDR_LEN              6
67 #define FRAME_DESC_SZ                   16
68 #define MIN_802_11_HDR_LEN              24
69 #define RSI_DEF_KEEPALIVE               90
70 #define RSI_WOW_KEEPALIVE                5
71 #define RSI_BCN_MISS_THRESHOLD           24
72 
73 #define DATA_QUEUE_WATER_MARK           400
74 #define MIN_DATA_QUEUE_WATER_MARK       300
75 #define MULTICAST_WATER_MARK            200
76 #define MAC_80211_HDR_FRAME_CONTROL     0
77 #define WME_NUM_AC                      4
78 #define NUM_SOFT_QUEUES                 6
79 #define MAX_HW_QUEUES                   12
80 #define INVALID_QUEUE                   0xff
81 #define MAX_CONTINUOUS_VO_PKTS          8
82 #define MAX_CONTINUOUS_VI_PKTS          4
83 
84 /* Hardware queue info */
85 #define BROADCAST_HW_Q			9
86 #define MGMT_HW_Q			10
87 #define BEACON_HW_Q			11
88 
89 #define IEEE80211_MGMT_FRAME            0x00
90 #define IEEE80211_CTL_FRAME             0x04
91 
92 #define RSI_MAX_ASSOC_STAS		32
93 #define IEEE80211_QOS_TID               0x0f
94 #define IEEE80211_NONQOS_TID            16
95 
96 #define MAX_DEBUGFS_ENTRIES             4
97 
98 #define TID_TO_WME_AC(_tid) (      \
99 	((_tid) == 0 || (_tid) == 3) ? BE_Q : \
100 	((_tid) < 3) ? BK_Q : \
101 	((_tid) < 6) ? VI_Q : \
102 	VO_Q)
103 
104 #define WME_AC(_q) (    \
105 	((_q) == BK_Q) ? IEEE80211_AC_BK : \
106 	((_q) == BE_Q) ? IEEE80211_AC_BE : \
107 	((_q) == VI_Q) ? IEEE80211_AC_VI : \
108 	IEEE80211_AC_VO)
109 
110 /* WoWLAN flags */
111 #define RSI_WOW_ENABLED			BIT(0)
112 #define RSI_WOW_NO_CONNECTION		BIT(1)
113 
114 #define RSI_DEV_9113		1
115 #define RSI_MAX_RX_PKTS		64
116 
117 struct version_info {
118 	u16 major;
119 	u16 minor;
120 	u8 release_num;
121 	u8 patch_num;
122 	union {
123 		struct {
124 			u8 fw_ver[8];
125 		} info;
126 	} ver;
127 } __packed;
128 
129 struct skb_info {
130 	s8 rssi;
131 	u32 flags;
132 	u16 channel;
133 	s8 tid;
134 	s8 sta_id;
135 	u8 internal_hdr_size;
136 	struct ieee80211_vif *vif;
137 	u8 vap_id;
138 };
139 
140 enum edca_queue {
141 	BK_Q,
142 	BE_Q,
143 	VI_Q,
144 	VO_Q,
145 	MGMT_SOFT_Q,
146 	MGMT_BEACON_Q
147 };
148 
149 struct security_info {
150 	bool security_enable;
151 	u32 ptk_cipher;
152 	u32 gtk_cipher;
153 };
154 
155 struct wmm_qinfo {
156 	s32 weight;
157 	s32 wme_params;
158 	s32 pkt_contended;
159 	s32 txop;
160 };
161 
162 struct transmit_q_stats {
163 	u32 total_tx_pkt_send[NUM_EDCA_QUEUES + 2];
164 	u32 total_tx_pkt_freed[NUM_EDCA_QUEUES + 2];
165 };
166 
167 struct vif_priv {
168 	bool is_ht;
169 	bool sgi;
170 	u16 seq_start;
171 	int vap_id;
172 };
173 
174 struct rsi_event {
175 	atomic_t event_condition;
176 	wait_queue_head_t event_queue;
177 };
178 
179 struct rsi_thread {
180 	void (*thread_function)(void *);
181 	struct completion completion;
182 	struct task_struct *task;
183 	struct rsi_event event;
184 	atomic_t thread_done;
185 };
186 
187 struct cqm_info {
188 	s8 last_cqm_event_rssi;
189 	int rssi_thold;
190 	u32 rssi_hyst;
191 };
192 
193 struct xtended_desc {
194 	u8 confirm_frame_type;
195 	u8 retry_cnt;
196 	u16 reserved;
197 };
198 
199 enum rsi_dfs_regions {
200 	RSI_REGION_FCC = 0,
201 	RSI_REGION_ETSI,
202 	RSI_REGION_TELEC,
203 	RSI_REGION_WORLD
204 };
205 
206 struct rsi_common {
207 	struct rsi_hw *priv;
208 	struct vif_priv vif_info[RSI_MAX_VIFS];
209 
210 	void *coex_cb;
211 	bool mgmt_q_block;
212 	struct version_info lmac_ver;
213 
214 	struct rsi_thread tx_thread;
215 	struct sk_buff_head tx_queue[NUM_EDCA_QUEUES + 2];
216 	struct completion wlan_init_completion;
217 	/* Mutex declaration */
218 	struct mutex mutex;
219 	/* Mutex used for tx thread */
220 	struct mutex tx_lock;
221 	/* Mutex used for rx thread */
222 	struct mutex rx_lock;
223 	u8 endpoint;
224 
225 	/* Channel/band related */
226 	u8 band;
227 	u8 num_supp_bands;
228 	u8 channel_width;
229 
230 	u16 rts_threshold;
231 	u16 bitrate_mask[2];
232 	u32 fixedrate_mask[2];
233 
234 	u8 rf_reset;
235 	struct transmit_q_stats tx_stats;
236 	struct security_info secinfo;
237 	struct wmm_qinfo tx_qinfo[NUM_EDCA_QUEUES];
238 	struct ieee80211_tx_queue_params edca_params[NUM_EDCA_QUEUES];
239 	u8 mac_addr[IEEE80211_ADDR_LEN];
240 
241 	/* state related */
242 	u32 fsm_state;
243 	bool init_done;
244 	u8 bb_rf_prog_count;
245 	bool iface_down;
246 
247 	/* Generic */
248 	u8 channel;
249 	u8 *rx_data_pkt;
250 	u8 mac_id;
251 	u8 radio_id;
252 	u16 rate_pwr[20];
253 	u16 min_rate;
254 
255 	/* WMM algo related */
256 	u8 selected_qnum;
257 	u32 pkt_cnt;
258 	u8 min_weight;
259 
260 	/* bgscan related */
261 	struct cqm_info cqm_info;
262 
263 	bool hw_data_qs_blocked;
264 	u8 driver_mode;
265 	u8 coex_mode;
266 	u16 oper_mode;
267 	u8 lp_ps_handshake_mode;
268 	u8 ulp_ps_handshake_mode;
269 	u8 uapsd_bitmap;
270 	u8 rf_power_val;
271 	u8 wlan_rf_power_mode;
272 	u8 obm_ant_sel_val;
273 	int tx_power;
274 	u8 ant_in_use;
275 	/* Mutex used for writing packet to bus */
276 	struct mutex tx_bus_mutex;
277 	bool hibernate_resume;
278 	bool reinit_hw;
279 	u8 wow_flags;
280 	u16 beacon_interval;
281 	u8 dtim_cnt;
282 
283 	/* AP mode parameters */
284 	u8 beacon_enabled;
285 	u16 beacon_cnt;
286 	struct rsi_sta stations[RSI_MAX_ASSOC_STAS + 1];
287 	int num_stations;
288 	int max_stations;
289 	struct ieee80211_key_conf *key;
290 
291 	/* Wi-Fi direct mode related */
292 	bool p2p_enabled;
293 	struct timer_list roc_timer;
294 	struct ieee80211_vif *roc_vif;
295 
296 	void *bt_adapter;
297 };
298 
299 struct eepromrw_info {
300 	u32 offset;
301 	u32 length;
302 	u8  write;
303 	u16 eeprom_erase;
304 	u8 data[480];
305 };
306 
307 struct eeprom_read {
308 	u16 length;
309 	u16 off_set;
310 };
311 
312 struct rsi_hw {
313 	struct rsi_common *priv;
314 	u8 device_model;
315 	struct ieee80211_hw *hw;
316 	struct ieee80211_vif *vifs[RSI_MAX_VIFS];
317 	struct ieee80211_tx_queue_params edca_params[NUM_EDCA_QUEUES];
318 	struct ieee80211_supported_band sbands[NUM_NL80211_BANDS];
319 
320 	struct device *device;
321 	u8 sc_nvifs;
322 
323 	enum rsi_host_intf rsi_host_intf;
324 	u16 block_size;
325 	enum ps_state ps_state;
326 	struct rsi_ps_info ps_info;
327 	spinlock_t ps_lock; /*To protect power save config*/
328 	u32 usb_buffer_status_reg;
329 #ifdef CONFIG_RSI_DEBUGFS
330 	struct rsi_debugfs *dfsentry;
331 	u8 num_debugfs_entries;
332 #endif
333 	char *fw_file_name;
334 	struct timer_list bl_cmd_timer;
335 	bool blcmd_timer_expired;
336 	u32 flash_capacity;
337 	struct eepromrw_info eeprom;
338 	u32 interrupt_status;
339 	u8 dfs_region;
340 	char country[2];
341 	void *rsi_dev;
342 	struct rsi_host_intf_ops *host_intf_ops;
343 	int (*check_hw_queue_status)(struct rsi_hw *adapter, u8 q_num);
344 	int (*determine_event_timeout)(struct rsi_hw *adapter);
345 };
346 
347 void rsi_print_version(struct rsi_common *common);
348 
349 struct rsi_host_intf_ops {
350 	int (*read_pkt)(struct rsi_hw *adapter, u8 *pkt, u32 len);
351 	int (*write_pkt)(struct rsi_hw *adapter, u8 *pkt, u32 len);
352 	int (*master_access_msword)(struct rsi_hw *adapter, u16 ms_word);
353 	int (*read_reg_multiple)(struct rsi_hw *adapter, u32 addr,
354 				 u8 *data, u16 count);
355 	int (*write_reg_multiple)(struct rsi_hw *adapter, u32 addr,
356 				  u8 *data, u16 count);
357 	int (*master_reg_read)(struct rsi_hw *adapter, u32 addr,
358 			       u32 *read_buf, u16 size);
359 	int (*master_reg_write)(struct rsi_hw *adapter,
360 				unsigned long addr, unsigned long data,
361 				u16 size);
362 	int (*load_data_master_write)(struct rsi_hw *adapter, u32 addr,
363 				      u32 instructions_size, u16 block_size,
364 				      u8 *fw);
365 	int (*reinit_device)(struct rsi_hw *adapter);
366 };
367 
368 enum rsi_host_intf rsi_get_host_intf(void *priv);
369 void rsi_set_bt_context(void *priv, void *bt_context);
370 
371 #endif
372