1 /*
2  * Copyright (c) 2010 Broadcom Corporation
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 ANY
11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #ifndef _BRCM_PUB_H_
18 #define _BRCM_PUB_H_
19 
20 #include <linux/bcma/bcma.h>
21 #include <brcmu_wifi.h>
22 #include "types.h"
23 #include "defs.h"
24 
25 #define	BRCMS_NUMRATES	16	/* max # of rates in a rateset */
26 
27 /* phy types */
28 #define	PHY_TYPE_A	0	/* Phy type A */
29 #define	PHY_TYPE_G	2	/* Phy type G */
30 #define	PHY_TYPE_N	4	/* Phy type N */
31 #define	PHY_TYPE_LP	5	/* Phy type Low Power A/B/G */
32 #define	PHY_TYPE_SSN	6	/* Phy type Single Stream N */
33 #define	PHY_TYPE_LCN	8	/* Phy type Single Stream N */
34 #define	PHY_TYPE_LCNXN	9	/* Phy type 2-stream N */
35 #define	PHY_TYPE_HT	7	/* Phy type 3-Stream N */
36 
37 /* bw */
38 #define BRCMS_10_MHZ	10	/* 10Mhz nphy channel bandwidth */
39 #define BRCMS_20_MHZ	20	/* 20Mhz nphy channel bandwidth */
40 #define BRCMS_40_MHZ	40	/* 40Mhz nphy channel bandwidth */
41 
42 #define	BRCMS_RSSI_MINVAL	-200	/* Low value, e.g. for forcing roam */
43 #define	BRCMS_RSSI_NO_SIGNAL	-91	/* NDIS RSSI link quality cutoffs */
44 #define	BRCMS_RSSI_VERY_LOW	-80	/* Very low quality cutoffs */
45 #define	BRCMS_RSSI_LOW		-70	/* Low quality cutoffs */
46 #define	BRCMS_RSSI_GOOD		-68	/* Good quality cutoffs */
47 #define	BRCMS_RSSI_VERY_GOOD	-58	/* Very good quality cutoffs */
48 #define	BRCMS_RSSI_EXCELLENT	-57	/* Excellent quality cutoffs */
49 
50 /* a large TX Power as an init value to factor out of min() calculations,
51  * keep low enough to fit in an s8, units are .25 dBm
52  */
53 #define BRCMS_TXPWR_MAX		(127)	/* ~32 dBm = 1,500 mW */
54 
55 /* rate related definitions */
56 #define	BRCMS_RATE_FLAG	0x80	/* Flag to indicate it is a basic rate */
57 #define	BRCMS_RATE_MASK	0x7f	/* Rate value mask w/o basic rate flag */
58 
59 /* legacy rx Antenna diversity for SISO rates */
60 #define	ANT_RX_DIV_FORCE_0	0	/* Use antenna 0 */
61 #define	ANT_RX_DIV_FORCE_1	1	/* Use antenna 1 */
62 #define	ANT_RX_DIV_START_1	2	/* Choose starting with 1 */
63 #define	ANT_RX_DIV_START_0	3	/* Choose starting with 0 */
64 #define	ANT_RX_DIV_ENABLE	3	/* APHY bbConfig Enable RX Diversity */
65 /* default antdiv setting */
66 #define ANT_RX_DIV_DEF		ANT_RX_DIV_START_0
67 
68 /* legacy rx Antenna diversity for SISO rates */
69 /* Tx on antenna 0, "legacy term Main" */
70 #define ANT_TX_FORCE_0		0
71 /* Tx on antenna 1, "legacy term Aux" */
72 #define ANT_TX_FORCE_1		1
73 /* Tx on phy's last good Rx antenna */
74 #define ANT_TX_LAST_RX		3
75 /* driver's default tx antenna setting */
76 #define ANT_TX_DEF		3
77 
78 /* Tx Chain values */
79 /* def bitmap of txchain */
80 #define TXCHAIN_DEF		0x1
81 /* default bitmap of tx chains for nphy */
82 #define TXCHAIN_DEF_NPHY	0x3
83 /* default bitmap of tx chains for nphy */
84 #define TXCHAIN_DEF_HTPHY	0x7
85 /* def bitmap of rxchain */
86 #define RXCHAIN_DEF		0x1
87 /* default bitmap of rx chains for nphy */
88 #define RXCHAIN_DEF_NPHY	0x3
89 /* default bitmap of rx chains for nphy */
90 #define RXCHAIN_DEF_HTPHY	0x7
91 /* no antenna switch */
92 #define ANTSWITCH_NONE		0
93 /* antenna switch on 4321CB2, 2of3 */
94 #define ANTSWITCH_TYPE_1	1
95 /* antenna switch on 4321MPCI, 2of3 */
96 #define ANTSWITCH_TYPE_2	2
97 /* antenna switch on 4322, 2of3 */
98 #define ANTSWITCH_TYPE_3	3
99 
100 #define RXBUFSZ		PKTBUFSZ
101 
102 #define MAX_STREAMS_SUPPORTED	4	/* max number of streams supported */
103 
104 struct brcm_rateset {
105 	/* # rates in this set */
106 	u32 count;
107 	/* rates in 500kbps units w/hi bit set if basic */
108 	u8 rates[WL_NUMRATES];
109 };
110 
111 struct brcms_c_rateset {
112 	uint count;		/* number of rates in rates[] */
113 	 /* rates in 500kbps units w/hi bit set if basic */
114 	u8 rates[BRCMS_NUMRATES];
115 	u8 htphy_membership;	/* HT PHY Membership */
116 	u8 mcs[MCSSET_LEN];	/* supported mcs index bit map */
117 };
118 
119 /* All the HT-specific default advertised capabilities (including AMPDU)
120  * should be grouped here at one place
121  */
122 #define AMPDU_DEF_MPDU_DENSITY	6	/* default mpdu density (110 ==> 4us) */
123 
124 /* wlc internal bss_info */
125 struct brcms_bss_info {
126 	u8 BSSID[ETH_ALEN];	/* network BSSID */
127 	u16 flags;		/* flags for internal attributes */
128 	u8 SSID_len;		/* the length of SSID */
129 	u8 SSID[32];		/* SSID string */
130 	s16 RSSI;		/* receive signal strength (in dBm) */
131 	s16 SNR;		/* receive signal SNR in dB */
132 	u16 beacon_period;	/* units are Kusec */
133 	u16 chanspec;	/* Channel num, bw, ctrl_sb and band */
134 	struct brcms_c_rateset rateset;	/* supported rates */
135 };
136 
137 #define MAC80211_PROMISC_BCNS	(1 << 0)
138 #define MAC80211_SCAN		(1 << 1)
139 
140 /*
141  * Public portion of common driver state structure.
142  * The wlc handle points at this.
143  */
144 struct brcms_pub {
145 	struct brcms_c_info *wlc;
146 	struct ieee80211_hw *ieee_hw;
147 	struct scb_ampdu *global_ampdu;
148 	uint mac80211_state;
149 	uint unit;		/* device instance number */
150 	uint corerev;		/* core revision */
151 	struct si_pub *sih;	/* SI handle (cookie for siutils calls) */
152 	bool up;		/* interface up and running */
153 	bool hw_off;		/* HW is off */
154 	bool hw_up;		/* one time hw up/down */
155 	bool _piomode;		/* true if pio mode */
156 	uint _nbands;		/* # bands supported */
157 	uint now;		/* # elapsed seconds */
158 
159 	bool delayed_down;	/* down delayed */
160 	bool associated;	/* true:part of [I]BSS, false: not */
161 	/* (union of stas_associated, aps_associated) */
162 	bool _ampdu;		/* ampdu enabled or not */
163 	u8 _n_enab;		/* bitmap of 11N + HT support */
164 
165 	u8 cur_etheraddr[ETH_ALEN];	/* our local ethernet address */
166 
167 	u32 radio_disabled;	/* bit vector for radio disabled reasons */
168 
169 	u16 boardrev;	/* version # of particular board */
170 	u8 sromrev;		/* version # of the srom */
171 	char srom_ccode[BRCM_CNTRY_BUF_SZ];	/* Country Code in SROM */
172 	u32 boardflags;	/* Board specific flags from srom */
173 	u32 boardflags2;	/* More board flags if sromrev >= 4 */
174 	bool phy_11ncapable;	/* the PHY/HW is capable of 802.11N */
175 
176 	struct wl_cnt *_cnt;	/* low-level counters in driver */
177 	struct dentry *dbgfs_dir;
178 };
179 
180 enum wlc_par_id {
181 	IOV_MPC = 1,
182 	IOV_RTSTHRESH,
183 	IOV_QTXPOWER,
184 	IOV_BCN_LI_BCN		/* Beacon listen interval in # of beacons */
185 };
186 
187 /***********************************************
188  * Feature-related macros to optimize out code *
189  * *********************************************
190  */
191 
192 #define ENAB_1x1	0x01
193 #define ENAB_2x2	0x02
194 #define ENAB_3x3	0x04
195 #define ENAB_4x4	0x08
196 #define SUPPORT_11N	(ENAB_1x1|ENAB_2x2)
197 #define SUPPORT_HT	(ENAB_1x1|ENAB_2x2|ENAB_3x3)
198 
199 /* WL11N Support */
200 #define AMPDU_AGG_HOST	1
201 
202 /* network protection config */
203 #define	BRCMS_PROT_G_SPEC		1	/* SPEC g protection */
204 #define	BRCMS_PROT_G_OVR		2	/* SPEC g prot override */
205 #define	BRCMS_PROT_G_USER		3	/* gmode specified by user */
206 #define	BRCMS_PROT_OVERLAP	4	/* overlap */
207 #define	BRCMS_PROT_N_USER		10	/* nmode specified by user */
208 #define	BRCMS_PROT_N_CFG		11	/* n protection */
209 #define	BRCMS_PROT_N_CFG_OVR	12	/* n protection override */
210 #define	BRCMS_PROT_N_NONGF	13	/* non-GF protection */
211 #define	BRCMS_PROT_N_NONGF_OVR	14	/* non-GF protection override */
212 #define	BRCMS_PROT_N_PAM_OVR	15	/* n preamble override */
213 #define	BRCMS_PROT_N_OBSS		16	/* non-HT OBSS present */
214 
215 /*
216  * 54g modes (basic bits may still be overridden)
217  *
218  * GMODE_LEGACY_B
219  *	Rateset: 1b, 2b, 5.5, 11
220  *	Preamble: Long
221  *	Shortslot: Off
222  * GMODE_AUTO
223  *	Rateset: 1b, 2b, 5.5b, 11b, 18, 24, 36, 54
224  *	Extended Rateset: 6, 9, 12, 48
225  *	Preamble: Long
226  *	Shortslot: Auto
227  * GMODE_ONLY
228  *	Rateset: 1b, 2b, 5.5b, 11b, 18, 24b, 36, 54
229  *	Extended Rateset: 6b, 9, 12b, 48
230  *	Preamble: Short required
231  *	Shortslot: Auto
232  * GMODE_B_DEFERRED
233  *	Rateset: 1b, 2b, 5.5b, 11b, 18, 24, 36, 54
234  *	Extended Rateset: 6, 9, 12, 48
235  *	Preamble: Long
236  *	Shortslot: On
237  * GMODE_PERFORMANCE
238  *	Rateset: 1b, 2b, 5.5b, 6b, 9, 11b, 12b, 18, 24b, 36, 48, 54
239  *	Preamble: Short required
240  *	Shortslot: On and required
241  * GMODE_LRS
242  *	Rateset: 1b, 2b, 5.5b, 11b
243  *	Extended Rateset: 6, 9, 12, 18, 24, 36, 48, 54
244  *	Preamble: Long
245  *	Shortslot: Auto
246  */
247 #define GMODE_LEGACY_B		0
248 #define GMODE_AUTO		1
249 #define GMODE_ONLY		2
250 #define GMODE_B_DEFERRED	3
251 #define GMODE_PERFORMANCE	4
252 #define GMODE_LRS		5
253 #define GMODE_MAX		6
254 
255 /* MCS values greater than this enable multiple streams */
256 #define HIGHEST_SINGLE_STREAM_MCS	7
257 
258 #define	MAXBANDS		2	/* Maximum #of bands */
259 
260 /* max number of antenna configurations */
261 #define ANT_SELCFG_MAX		4
262 
263 struct brcms_antselcfg {
264 	u8 ant_config[ANT_SELCFG_MAX];	/* antenna configuration */
265 	u8 num_antcfg;	/* number of available antenna configurations */
266 };
267 
268 /* common functions for every port */
269 struct brcms_c_info *brcms_c_attach(struct brcms_info *wl,
270 				    struct bcma_device *core, uint unit,
271 				    bool piomode, uint *perr);
272 uint brcms_c_detach(struct brcms_c_info *wlc);
273 int brcms_c_up(struct brcms_c_info *wlc);
274 uint brcms_c_down(struct brcms_c_info *wlc);
275 
276 bool brcms_c_chipmatch(struct bcma_device *core);
277 void brcms_c_init(struct brcms_c_info *wlc, bool mute_tx);
278 void brcms_c_reset(struct brcms_c_info *wlc);
279 
280 void brcms_c_intrson(struct brcms_c_info *wlc);
281 u32 brcms_c_intrsoff(struct brcms_c_info *wlc);
282 void brcms_c_intrsrestore(struct brcms_c_info *wlc, u32 macintmask);
283 bool brcms_c_intrsupd(struct brcms_c_info *wlc);
284 bool brcms_c_isr(struct brcms_c_info *wlc);
285 bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded);
286 bool brcms_c_sendpkt_mac80211(struct brcms_c_info *wlc, struct sk_buff *sdu,
287 			      struct ieee80211_hw *hw);
288 bool brcms_c_aggregatable(struct brcms_c_info *wlc, u8 tid);
289 void brcms_c_protection_upd(struct brcms_c_info *wlc, uint idx, int val);
290 int brcms_c_get_header_len(void);
291 void brcms_c_set_addrmatch(struct brcms_c_info *wlc, int match_reg_offset,
292 			   const u8 *addr);
293 void brcms_c_wme_setparams(struct brcms_c_info *wlc, u16 aci,
294 			   const struct ieee80211_tx_queue_params *arg,
295 			   bool suspend);
296 struct brcms_pub *brcms_c_pub(struct brcms_c_info *wlc);
297 void brcms_c_ampdu_flush(struct brcms_c_info *wlc, struct ieee80211_sta *sta,
298 			 u16 tid);
299 void brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid,
300 				  u8 ba_wsize, uint max_rx_ampdu_bytes);
301 int brcms_c_module_register(struct brcms_pub *pub, const char *name,
302 			    struct brcms_info *hdl,
303 			    int (*down_fn)(void *handle));
304 int brcms_c_module_unregister(struct brcms_pub *pub, const char *name,
305 			      struct brcms_info *hdl);
306 void brcms_c_suspend_mac_and_wait(struct brcms_c_info *wlc);
307 void brcms_c_enable_mac(struct brcms_c_info *wlc);
308 void brcms_c_associate_upd(struct brcms_c_info *wlc, bool state);
309 void brcms_c_scan_start(struct brcms_c_info *wlc);
310 void brcms_c_scan_stop(struct brcms_c_info *wlc);
311 int brcms_c_get_curband(struct brcms_c_info *wlc);
312 int brcms_c_set_channel(struct brcms_c_info *wlc, u16 channel);
313 int brcms_c_set_rate_limit(struct brcms_c_info *wlc, u16 srl, u16 lrl);
314 void brcms_c_get_current_rateset(struct brcms_c_info *wlc,
315 				 struct brcm_rateset *currs);
316 int brcms_c_set_rateset(struct brcms_c_info *wlc, struct brcm_rateset *rs);
317 int brcms_c_set_beacon_period(struct brcms_c_info *wlc, u16 period);
318 u16 brcms_c_get_phy_type(struct brcms_c_info *wlc, int phyidx);
319 void brcms_c_set_shortslot_override(struct brcms_c_info *wlc,
320 				    s8 sslot_override);
321 void brcms_c_set_beacon_listen_interval(struct brcms_c_info *wlc, u8 interval);
322 u64 brcms_c_tsf_get(struct brcms_c_info *wlc);
323 void brcms_c_tsf_set(struct brcms_c_info *wlc, u64 tsf);
324 int brcms_c_set_tx_power(struct brcms_c_info *wlc, int txpwr);
325 int brcms_c_get_tx_power(struct brcms_c_info *wlc);
326 bool brcms_c_check_radio_disabled(struct brcms_c_info *wlc);
327 void brcms_c_mute(struct brcms_c_info *wlc, bool on);
328 bool brcms_c_tx_flush_completed(struct brcms_c_info *wlc);
329 void brcms_c_start_station(struct brcms_c_info *wlc, u8 *addr);
330 void brcms_c_start_ap(struct brcms_c_info *wlc, u8 *addr, const u8 *bssid,
331 		      u8 *ssid, size_t ssid_len);
332 void brcms_c_start_adhoc(struct brcms_c_info *wlc, u8 *addr);
333 void brcms_c_update_beacon(struct brcms_c_info *wlc);
334 void brcms_c_set_new_beacon(struct brcms_c_info *wlc, struct sk_buff *beacon,
335 			    u16 tim_offset, u16 dtim_period);
336 void brcms_c_set_new_probe_resp(struct brcms_c_info *wlc,
337 				struct sk_buff *probe_resp);
338 void brcms_c_enable_probe_resp(struct brcms_c_info *wlc, bool enable);
339 void brcms_c_set_ssid(struct brcms_c_info *wlc, u8 *ssid, size_t ssid_len);
340 
341 #endif				/* _BRCM_PUB_H_ */
342