diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00reg.h')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00reg.h | 145 |
1 files changed, 79 insertions, 66 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00reg.h b/drivers/net/wireless/rt2x00/rt2x00reg.h index 0325bed2fbf..7e88ce5651b 100644 --- a/drivers/net/wireless/rt2x00/rt2x00reg.h +++ b/drivers/net/wireless/rt2x00/rt2x00reg.h @@ -27,17 +27,6 @@ #define RT2X00REG_H /* - * TX result flags. - */ -enum tx_status { - TX_SUCCESS = 0, - TX_SUCCESS_RETRY = 1, - TX_FAIL_RETRY = 2, - TX_FAIL_INVALID = 3, - TX_FAIL_OTHER = 4, -}; - -/* * Antenna values */ enum antenna { @@ -141,83 +130,107 @@ struct rt2x00_field32 { /* * Power of two check, this will check - * if the mask that has been given contains - * and contiguous set of bits. + * 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) \ + __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(!__builtin_constant_p(__mask) || \ + !(__mask) || \ + !is_valid_mask(__mask) || \ + (__mask) != (__type)(__mask)) \ + #define FIELD8(__mask) \ ({ \ - BUILD_BUG_ON(!(__mask) || \ - !is_valid_mask(__mask) || \ - (__mask) != (u8)(__mask)); \ + FIELD_CHECK(__mask, u8); \ (struct rt2x00_field8) { \ - __ffs(__mask), (__mask) \ + compile_ffs8(__mask), (__mask) \ }; \ }) #define FIELD16(__mask) \ ({ \ - BUILD_BUG_ON(!(__mask) || \ - !is_valid_mask(__mask) || \ - (__mask) != (u16)(__mask));\ + FIELD_CHECK(__mask, u16); \ (struct rt2x00_field16) { \ - __ffs(__mask), (__mask) \ + compile_ffs16(__mask), (__mask) \ }; \ }) #define FIELD32(__mask) \ ({ \ - BUILD_BUG_ON(!(__mask) || \ - !is_valid_mask(__mask) || \ - (__mask) != (u32)(__mask));\ + FIELD_CHECK(__mask, u32); \ (struct rt2x00_field32) { \ - __ffs(__mask), (__mask) \ + 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; -} +#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 */ |