/*
Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
<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, write to the
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
Module: rt2x00
Abstract: rt2x00 generic register information.
*/
#ifndef RT2X00REG_H
#define RT2X00REG_H
/*
* 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_BEACON = 2,
};
/*
* 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_RX_ON,
STATE_RADIO_RX_OFF,
STATE_RADIO_RX_ON_LINK,
STATE_RADIO_RX_OFF_LINK,
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,
};
/*
* 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,
};
/*
* 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(1 + (x) + low_bit_mask(x))
/*
* Macro's to find first set bit in a variable.
* These macro's behaves the same as the __ffs() function with
* the most important difference that this is done during
* compile-time rather then run-time.
*/
#define compile_ffs2(__x) \
( ((__x) & 0x1) ? 0 : 1 )
#define compile_ffs4(__x) \
( ((__x) & 0x3) ? \
compile_ffs2(__x) : (compile_ffs2((__x) >> 2) + 2) )
#define compile_ffs8(__x) \
( ((__x) & 0xf) ? \
compile_ffs4(__x) : (compile_ffs4((__x) >> 4) + 4) )
#define compile_ffs16(__x) \
( ((__x) & 0xff) ? \
compile_ffs8(__x) : (compile_ffs8((__x) >> 8) + 8) )
#define compile_ffs32(__x) \
( ((__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(!__builtin_constant_p(__mask) || \
!(__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) \
}; \
})
static inline void rt2x00_set_field32(u32 *reg,
const struct rt2x00_field32 field,
const u32 value)
{
*reg &= ~(field.bit_mask);
*reg |= (value << field.bit_offset) & field.bit_mask;
}
static inline u32 rt2x00_get_field32(const u32 reg,
const struct rt2x00_field32 field)
{
return (reg & field.bit_mask) >> field.bit_offset;
}
static inline void rt2x00_set_field16(u16 *reg,
const struct rt2x00_field16 field,
const u16 value)
{
*reg &= ~(field.bit_mask);
*reg |= (value << field.bit_offset) & field.bit_mask;
}
static inline u16 rt2x00_get_field16(const u16 reg,
const struct rt2x00_field16 field)
{
return (reg & field.bit_mask) >> field.bit_offset;
}
static inline void rt2x00_set_field8(u8 *reg,
const struct rt2x00_field8 field,
const u8 value)
{
*reg &= ~(field.bit_mask);
*reg |= (value << field.bit_offset) & field.bit_mask;
}
static inline u8 rt2x00_get_field8(const u8 reg,
const struct rt2x00_field8 field)
{
return (reg & field.bit_mask) >> field.bit_offset;
}
#endif /* RT2X00REG_H */
