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iwl_get_bits - Extract a hardware bit-field value

u32 iwl_get_bits (__le32 src, u8 pos, u8 len)

Arguments

src

source hardware value (__le32)

pos

bit-position (0-based) of first bit of value

len

length of bit-field

Description

iwl_get_bits will return the bit-field in cpu endian ordering.

NOTE

If used from IWL_GET_BITS then pos and len are compile-constants and will collapse to minimal code by the compiler.

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iwl_set_bits - Set a hardware bit-field value

void iwl_set_bits (__le32 * dst, u8 pos, u8 len, int val)

Arguments

dst

Address of __le32 hardware value

pos

bit-position (0-based) of first bit of value

len

length of bit-field

val

cpu endian value to encode into the bit-field

Description

iwl_set_bits will encode val into dst, masked to be len bits long at bit position pos.

NOTE

If used IWL_SET_BITS pos and len will be compile-constants and will collapse to minimal code by the compiler.

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iwl_queue_inc_wrap - increment queue index, wrap back to beginning

int iwl_queue_inc_wrap (int index, int n_bd)

Arguments

Description

index -- current index n_bd -- total number of entries in queue (must be power of 2)

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iwl_queue_dec_wrap - decrement queue index, wrap back to end

int iwl_queue_dec_wrap (int index, int n_bd)

Arguments

Description

index -- current index n_bd -- total number of entries in queue (must be power of 2)

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