2 Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 Abstract: rt2x00 generic register information.
33 RX_CRYPTO_SUCCESS = 0,
34 RX_CRYPTO_FAIL_ICV = 1,
35 RX_CRYPTO_FAIL_MIC = 2,
36 RX_CRYPTO_FAIL_KEY = 3,
43 ANTENNA_SW_DIVERSITY = 0,
46 ANTENNA_HW_DIVERSITY = 3,
54 LED_MODE_TXRX_ACTIVITY = 1,
55 LED_MODE_SIGNAL_STRENGTH = 2,
79 * Additional device states, these values are
80 * not strict since they are not directly passed
87 STATE_RADIO_RX_ON_LINK,
88 STATE_RADIO_RX_OFF_LINK,
104 * Cipher types for hardware encryption
113 * The following fields were added by rt61pci and rt73usb.
117 CIPHER_TKIP_NO_MIC = 7, /* Don't send to device */
121 * Note that CIPHER_NONE isn't counted, and CKIP64 and CKIP128
122 * are excluded due to limitations in mac80211.
130 enum rate_modulation {
133 RATE_MODE_HT_MIX = 2,
134 RATE_MODE_HT_GREENFIELD = 3,
139 * We store the position of a register field inside a field structure,
140 * This will simplify the process of setting and reading a certain field
141 * inside the register while making sure the process remains byte order safe.
143 struct rt2x00_field8 {
148 struct rt2x00_field16 {
153 struct rt2x00_field32 {
159 * Power of two check, this will check
160 * if the mask that has been given contains and contiguous set of bits.
161 * Note that we cannot use the is_power_of_2() function since this
162 * check must be done at compile-time.
164 #define is_power_of_two(x) ( !((x) & ((x)-1)) )
165 #define low_bit_mask(x) ( ((x)-1) & ~(x) )
166 #define is_valid_mask(x) is_power_of_two(1LU + (x) + low_bit_mask(x))
169 * Macro's to find first set bit in a variable.
170 * These macro's behaves the same as the __ffs() function with
171 * the most important difference that this is done during
172 * compile-time rather then run-time.
174 #define compile_ffs2(__x) \
175 __builtin_choose_expr(((__x) & 0x1), 0, 1)
177 #define compile_ffs4(__x) \
178 __builtin_choose_expr(((__x) & 0x3), \
179 (compile_ffs2((__x))), \
180 (compile_ffs2((__x) >> 2) + 2))
182 #define compile_ffs8(__x) \
183 __builtin_choose_expr(((__x) & 0xf), \
184 (compile_ffs4((__x))), \
185 (compile_ffs4((__x) >> 4) + 4))
187 #define compile_ffs16(__x) \
188 __builtin_choose_expr(((__x) & 0xff), \
189 (compile_ffs8((__x))), \
190 (compile_ffs8((__x) >> 8) + 8))
192 #define compile_ffs32(__x) \
193 __builtin_choose_expr(((__x) & 0xffff), \
194 (compile_ffs16((__x))), \
195 (compile_ffs16((__x) >> 16) + 16))
198 * This macro will check the requirements for the FIELD{8,16,32} macros
199 * The mask should be a constant non-zero contiguous set of bits which
200 * does not exceed the given typelimit.
202 #define FIELD_CHECK(__mask, __type) \
203 BUILD_BUG_ON(!(__mask) || \
204 !is_valid_mask(__mask) || \
205 (__mask) != (__type)(__mask)) \
207 #define FIELD8(__mask) \
209 FIELD_CHECK(__mask, u8); \
210 (struct rt2x00_field8) { \
211 compile_ffs8(__mask), (__mask) \
215 #define FIELD16(__mask) \
217 FIELD_CHECK(__mask, u16); \
218 (struct rt2x00_field16) { \
219 compile_ffs16(__mask), (__mask) \
223 #define FIELD32(__mask) \
225 FIELD_CHECK(__mask, u32); \
226 (struct rt2x00_field32) { \
227 compile_ffs32(__mask), (__mask) \
231 #define SET_FIELD(__reg, __type, __field, __value)\
233 typecheck(__type, __field); \
234 *(__reg) &= ~((__field).bit_mask); \
235 *(__reg) |= ((__value) << \
236 ((__field).bit_offset)) & \
237 ((__field).bit_mask); \
240 #define GET_FIELD(__reg, __type, __field) \
242 typecheck(__type, __field); \
243 ((__reg) & ((__field).bit_mask)) >> \
244 ((__field).bit_offset); \
247 #define rt2x00_set_field32(__reg, __field, __value) \
248 SET_FIELD(__reg, struct rt2x00_field32, __field, __value)
249 #define rt2x00_get_field32(__reg, __field) \
250 GET_FIELD(__reg, struct rt2x00_field32, __field)
252 #define rt2x00_set_field16(__reg, __field, __value) \
253 SET_FIELD(__reg, struct rt2x00_field16, __field, __value)
254 #define rt2x00_get_field16(__reg, __field) \
255 GET_FIELD(__reg, struct rt2x00_field16, __field)
257 #define rt2x00_set_field8(__reg, __field, __value) \
258 SET_FIELD(__reg, struct rt2x00_field8, __field, __value)
259 #define rt2x00_get_field8(__reg, __field) \
260 GET_FIELD(__reg, struct rt2x00_field8, __field)
262 #endif /* RT2X00REG_H */