summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ralink/rt2x00/rt2x00reg.h
blob: 3cc541d13d679e8cc3217e0650919c2f313730c0 (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
/*
	Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
	<http://rt2x00.serialmonkey.com>

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

/*
	Module: rt2x00
	Abstract: rt2x00 generic register information.
 */

#ifndef RT2X00REG_H
#define RT2X00REG_H

/*
 * RX crypto status
 */
enum rx_crypto {
	RX_CRYPTO_SUCCESS = 0,
	RX_CRYPTO_FAIL_ICV = 1,
	RX_CRYPTO_FAIL_MIC = 2,
	RX_CRYPTO_FAIL_KEY = 3,
};

/*
 * Antenna values
 */
enum antenna {
	ANTENNA_SW_DIVERSITY = 0,
	ANTENNA_A = 1,
	ANTENNA_B = 2,
	ANTENNA_HW_DIVERSITY = 3,
};

/*
 * Led mode values.
 */
enum led_mode {
	LED_MODE_DEFAULT = 0,
	LED_MODE_TXRX_ACTIVITY = 1,
	LED_MODE_SIGNAL_STRENGTH = 2,
	LED_MODE_ASUS = 3,
	LED_MODE_ALPHA = 4,
};

/*
 * TSF sync values
 */
enum tsf_sync {
	TSF_SYNC_NONE = 0,
	TSF_SYNC_INFRA = 1,
	TSF_SYNC_ADHOC = 2,
	TSF_SYNC_AP_NONE = 3,
};

/*
 * Device states
 */
enum dev_state {
	STATE_DEEP_SLEEP = 0,
	STATE_SLEEP = 1,
	STATE_STANDBY = 2,
	STATE_AWAKE = 3,

/*
 * Additional device states, these values are
 * not strict since they are not directly passed
 * into the device.
 */
	STATE_RADIO_ON,
	STATE_RADIO_OFF,
	STATE_RADIO_IRQ_ON,
	STATE_RADIO_IRQ_OFF,
};

/*
 * IFS backoff values
 */
enum ifs {
	IFS_BACKOFF = 0,
	IFS_SIFS = 1,
	IFS_NEW_BACKOFF = 2,
	IFS_NONE = 3,
};

/*
 * IFS backoff values for HT devices
 */
enum txop {
	TXOP_HTTXOP = 0,
	TXOP_PIFS = 1,
	TXOP_SIFS = 2,
	TXOP_BACKOFF = 3,
};

/*
 * Cipher types for hardware encryption
 */
enum cipher {
	CIPHER_NONE = 0,
	CIPHER_WEP64 = 1,
	CIPHER_WEP128 = 2,
	CIPHER_TKIP = 3,
	CIPHER_AES = 4,
/*
 * The following fields were added by rt61pci and rt73usb.
 */
	CIPHER_CKIP64 = 5,
	CIPHER_CKIP128 = 6,
	CIPHER_TKIP_NO_MIC = 7, /* Don't send to device */

/*
 * Max cipher type.
 * Note that CIPHER_NONE isn't counted, and CKIP64 and CKIP128
 * are excluded due to limitations in mac80211.
 */
	CIPHER_MAX = 4,
};

/*
 * Rate modulations
 */
enum rate_modulation {
	RATE_MODE_CCK = 0,
	RATE_MODE_OFDM = 1,
	RATE_MODE_HT_MIX = 2,
	RATE_MODE_HT_GREENFIELD = 3,
};

/*
 * Firmware validation error codes
 */
enum firmware_errors {
	FW_OK,
	FW_BAD_CRC,
	FW_BAD_LENGTH,
	FW_BAD_VERSION,
};

/*
 * Register handlers.
 * We store the position of a register field inside a field structure,
 * This will simplify the process of setting and reading a certain field
 * inside the register while making sure the process remains byte order safe.
 */
struct rt2x00_field8 {
	u8 bit_offset;
	u8 bit_mask;
};

struct rt2x00_field16 {
	u16 bit_offset;
	u16 bit_mask;
};

struct rt2x00_field32 {
	u32 bit_offset;
	u32 bit_mask;
};

/*
 * Power of two check, this will check
 * if the mask that has been given contains and contiguous set of bits.
 * Note that we cannot use the is_power_of_2() function since this
 * check must be done at compile-time.
 */
#define is_power_of_two(x)	( !((x) & ((x)-1)) )
#define low_bit_mask(x)		( ((x)-1) & ~(x) )
#define is_valid_mask(x)	is_power_of_two(1LU + (x) + low_bit_mask(x))

/*
 * Macros to find first set bit in a variable.
 * These macros behave the same as the __ffs() functions but
 * the most important difference that this is done during
 * compile-time rather then run-time.
 */
#define compile_ffs2(__x) \
	__builtin_choose_expr(((__x) & 0x1), 0, 1)

#define compile_ffs4(__x) \
	__builtin_choose_expr(((__x) & 0x3), \
			      (compile_ffs2((__x))), \
			      (compile_ffs2((__x) >> 2) + 2))

#define compile_ffs8(__x) \
	__builtin_choose_expr(((__x) & 0xf), \
			      (compile_ffs4((__x))), \
			      (compile_ffs4((__x) >> 4) + 4))

#define compile_ffs16(__x) \
	__builtin_choose_expr(((__x) & 0xff), \
			      (compile_ffs8((__x))), \
			      (compile_ffs8((__x) >> 8) + 8))

#define compile_ffs32(__x) \
	__builtin_choose_expr(((__x) & 0xffff), \
			      (compile_ffs16((__x))), \
			      (compile_ffs16((__x) >> 16) + 16))

/*
 * This macro will check the requirements for the FIELD{8,16,32} macros
 * The mask should be a constant non-zero contiguous set of bits which
 * does not exceed the given typelimit.
 */
#define FIELD_CHECK(__mask, __type)			\
	BUILD_BUG_ON(!(__mask) ||			\
		     !is_valid_mask(__mask) ||		\
		     (__mask) != (__type)(__mask))	\

#define FIELD8(__mask)				\
({						\
	FIELD_CHECK(__mask, u8);		\
	(struct rt2x00_field8) {		\
		compile_ffs8(__mask), (__mask)	\
	};					\
})

#define FIELD16(__mask)				\
({						\
	FIELD_CHECK(__mask, u16);		\
	(struct rt2x00_field16) {		\
		compile_ffs16(__mask), (__mask)	\
	};					\
})

#define FIELD32(__mask)				\
({						\
	FIELD_CHECK(__mask, u32);		\
	(struct rt2x00_field32) {		\
		compile_ffs32(__mask), (__mask)	\
	};					\
})

#define SET_FIELD(__reg, __type, __field, __value)\
({						\
	typecheck(__type, __field);		\
	*(__reg) &= ~((__field).bit_mask);	\
	*(__reg) |= ((__value) <<		\
	    ((__field).bit_offset)) &		\
	    ((__field).bit_mask);		\
})

#define GET_FIELD(__reg, __type, __field)	\
({						\
	typecheck(__type, __field);		\
	((__reg) & ((__field).bit_mask)) >>	\
	    ((__field).bit_offset);		\
})

#define rt2x00_set_field32(__reg, __field, __value) \
	SET_FIELD(__reg, struct rt2x00_field32, __field, __value)
#define rt2x00_get_field32(__reg, __field) \
	GET_FIELD(__reg, struct rt2x00_field32, __field)

#define rt2x00_set_field16(__reg, __field, __value) \
	SET_FIELD(__reg, struct rt2x00_field16, __field, __value)
#define rt2x00_get_field16(__reg, __field) \
	GET_FIELD(__reg, struct rt2x00_field16, __field)

#define rt2x00_set_field8(__reg, __field, __value) \
	SET_FIELD(__reg, struct rt2x00_field8, __field, __value)
#define rt2x00_get_field8(__reg, __field) \
	GET_FIELD(__reg, struct rt2x00_field8, __field)

#endif /* RT2X00REG_H */