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Defines | Typedefs | Functions
mlx_bitops.h File Reference

Mellanox bit operations. More...

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Defines

#define MLX_DECLARE_STRUCT(_structure)
 Wrapper structure for pseudo_bit_t structures.
#define MLX_PSEUDO_STRUCT(_ptr)   typeof ( *((_ptr)->u.dummy[0]) )
 Get pseudo_bit_t structure type from wrapper structure pointer.
#define MLX_BIT_OFFSET(_structure_st, _field)   offsetof ( _structure_st, _field )
 Bit offset of a field within a pseudo_bit_t structure.
#define MLX_DWORD_OFFSET(_structure_st, _field)   ( MLX_BIT_OFFSET ( _structure_st, _field ) / 32 )
 Dword offset of a field within a pseudo_bit_t structure.
#define MLX_DWORD_BIT_OFFSET(_structure_st, _index, _field)   ( MLX_BIT_OFFSET ( _structure_st, _field ) - ( 32 * (_index) ) )
 Dword bit offset of a field within a pseudo_bit_t structure.
#define MLX_BIT_WIDTH(_structure_st, _field)   sizeof ( ( ( _structure_st * ) NULL )->_field )
 Bit width of a field within a pseudo_bit_t structure.
#define MLX_BIT_MASK(_structure_st, _field)
 Bit mask for a field within a pseudo_bit_t structure.
#define MLX_ASSEMBLE_1(_structure_st, _index, _field, _value)   ( (_value) << MLX_DWORD_BIT_OFFSET ( _structure_st, _index, _field ) )
#define MLX_ASSEMBLE_2(_structure_st, _index, _field, _value,...)
#define MLX_ASSEMBLE_3(_structure_st, _index, _field, _value,...)
#define MLX_ASSEMBLE_4(_structure_st, _index, _field, _value,...)
#define MLX_ASSEMBLE_5(_structure_st, _index, _field, _value,...)
#define MLX_ASSEMBLE_6(_structure_st, _index, _field, _value,...)
#define MLX_ASSEMBLE_7(_structure_st, _index, _field, _value,...)
#define MLX_ASSEMBLE_8(_structure_st, _index, _field, _value,...)
#define MLX_MASK_1(_structure_st, _index, _field)
#define MLX_MASK_2(_structure_st, _index, _field,...)
#define MLX_MASK_3(_structure_st, _index, _field,...)
#define MLX_MASK_4(_structure_st, _index, _field,...)
#define MLX_MASK_5(_structure_st, _index, _field,...)
#define MLX_MASK_6(_structure_st, _index, _field,...)
#define MLX_MASK_7(_structure_st, _index, _field,...)
#define MLX_MASK_8(_structure_st, _index, _field,...)
#define MLX_FILL(_ptr, _index, _assembled)
#define MLX_FILL_1(_ptr, _index,...)
#define MLX_FILL_2(_ptr, _index,...)
#define MLX_FILL_3(_ptr, _index,...)
#define MLX_FILL_4(_ptr, _index,...)
#define MLX_FILL_5(_ptr, _index,...)
#define MLX_FILL_6(_ptr, _index,...)
#define MLX_FILL_7(_ptr, _index,...)
#define MLX_FILL_8(_ptr, _index,...)
#define MLX_SET(_ptr, _field, _value)
#define MLX_GET(_ptr, _field)
#define MLX_FILL_H(_structure_st, _index, _field, _address)

Typedefs

typedef unsigned char pseudo_bit_t

Functions

 FILE_LICENCE (GPL2_OR_LATER)

Detailed Description

Mellanox bit operations.

Definition in file mlx_bitops.h.


Define Documentation

#define MLX_DECLARE_STRUCT (   _structure)
Value:
_structure {                                                         \
            union {                                                          \
                uint8_t bytes[ sizeof ( struct _structure ## _st ) / 8 ];    \
                uint32_t dwords[ sizeof ( struct _structure ## _st ) / 32 ]; \
                struct _structure ## _st *dummy[0];                          \
            } __attribute__ (( packed )) u;                                  \
        } __attribute__ (( packed ))

Wrapper structure for pseudo_bit_t structures.

This structure provides a wrapper around the autogenerated pseudo_bit_t structures. It has the correct size, and also encapsulates type information about the underlying pseudo_bit_t structure, which allows the MLX_FILL etc. macros to work without requiring explicit type information.

Definition at line 44 of file mlx_bitops.h.

#define MLX_PSEUDO_STRUCT (   _ptr)    typeof ( *((_ptr)->u.dummy[0]) )

Get pseudo_bit_t structure type from wrapper structure pointer.

Definition at line 54 of file mlx_bitops.h.

#define MLX_BIT_OFFSET (   _structure_st,
  _field 
)    offsetof ( _structure_st, _field )

Bit offset of a field within a pseudo_bit_t structure.

Definition at line 58 of file mlx_bitops.h.

#define MLX_DWORD_OFFSET (   _structure_st,
  _field 
)    ( MLX_BIT_OFFSET ( _structure_st, _field ) / 32 )

Dword offset of a field within a pseudo_bit_t structure.

Definition at line 62 of file mlx_bitops.h.

#define MLX_DWORD_BIT_OFFSET (   _structure_st,
  _index,
  _field 
)    ( MLX_BIT_OFFSET ( _structure_st, _field ) - ( 32 * (_index) ) )

Dword bit offset of a field within a pseudo_bit_t structure.

Yes, using mod-32 would work, but would lose the check for the error of specifying a mismatched field name and dword index.

Definition at line 70 of file mlx_bitops.h.

#define MLX_BIT_WIDTH (   _structure_st,
  _field 
)    sizeof ( ( ( _structure_st * ) NULL )->_field )

Bit width of a field within a pseudo_bit_t structure.

Definition at line 74 of file mlx_bitops.h.

#define MLX_BIT_MASK (   _structure_st,
  _field 
)
Value:
( ( ~( ( uint32_t ) 0 ) ) >>                                         \
          ( 32 - MLX_BIT_WIDTH ( _structure_st, _field ) ) )

Bit mask for a field within a pseudo_bit_t structure.

Definition at line 78 of file mlx_bitops.h.

#define MLX_ASSEMBLE_1 (   _structure_st,
  _index,
  _field,
  _value 
)    ( (_value) << MLX_DWORD_BIT_OFFSET ( _structure_st, _index, _field ) )

Definition at line 87 of file mlx_bitops.h.

#define MLX_ASSEMBLE_2 (   _structure_st,
  _index,
  _field,
  _value,
  ... 
)
Value:
( MLX_ASSEMBLE_1 ( _structure_st, _index, _field, _value ) |         \
          MLX_ASSEMBLE_1 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 90 of file mlx_bitops.h.

#define MLX_ASSEMBLE_3 (   _structure_st,
  _index,
  _field,
  _value,
  ... 
)
Value:
( MLX_ASSEMBLE_1 ( _structure_st, _index, _field, _value ) |         \
          MLX_ASSEMBLE_2 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 94 of file mlx_bitops.h.

#define MLX_ASSEMBLE_4 (   _structure_st,
  _index,
  _field,
  _value,
  ... 
)
Value:
( MLX_ASSEMBLE_1 ( _structure_st, _index, _field, _value ) |         \
          MLX_ASSEMBLE_3 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 98 of file mlx_bitops.h.

#define MLX_ASSEMBLE_5 (   _structure_st,
  _index,
  _field,
  _value,
  ... 
)
Value:
( MLX_ASSEMBLE_1 ( _structure_st, _index, _field, _value ) |         \
          MLX_ASSEMBLE_4 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 102 of file mlx_bitops.h.

#define MLX_ASSEMBLE_6 (   _structure_st,
  _index,
  _field,
  _value,
  ... 
)
Value:
( MLX_ASSEMBLE_1 ( _structure_st, _index, _field, _value ) |         \
          MLX_ASSEMBLE_5 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 106 of file mlx_bitops.h.

#define MLX_ASSEMBLE_7 (   _structure_st,
  _index,
  _field,
  _value,
  ... 
)
Value:
( MLX_ASSEMBLE_1 ( _structure_st, _index, _field, _value ) |         \
          MLX_ASSEMBLE_6 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 110 of file mlx_bitops.h.

#define MLX_ASSEMBLE_8 (   _structure_st,
  _index,
  _field,
  _value,
  ... 
)
Value:
( MLX_ASSEMBLE_1 ( _structure_st, _index, _field, _value ) |         \
          MLX_ASSEMBLE_7 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 114 of file mlx_bitops.h.

#define MLX_MASK_1 (   _structure_st,
  _index,
  _field 
)
Value:
( MLX_BIT_MASK ( _structure_st, _field ) <<                          \
          MLX_DWORD_BIT_OFFSET ( _structure_st, _index, _field ) )

Definition at line 123 of file mlx_bitops.h.

#define MLX_MASK_2 (   _structure_st,
  _index,
  _field,
  ... 
)
Value:
( MLX_MASK_1 ( _structure_st, _index, _field ) |                     \
          MLX_MASK_1 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 127 of file mlx_bitops.h.

#define MLX_MASK_3 (   _structure_st,
  _index,
  _field,
  ... 
)
Value:
( MLX_MASK_1 ( _structure_st, _index, _field ) |                     \
          MLX_MASK_2 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 131 of file mlx_bitops.h.

#define MLX_MASK_4 (   _structure_st,
  _index,
  _field,
  ... 
)
Value:
( MLX_MASK_1 ( _structure_st, _index, _field ) |                     \
          MLX_MASK_3 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 135 of file mlx_bitops.h.

#define MLX_MASK_5 (   _structure_st,
  _index,
  _field,
  ... 
)
Value:
( MLX_MASK_1 ( _structure_st, _index, _field ) |                     \
          MLX_MASK_4 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 139 of file mlx_bitops.h.

#define MLX_MASK_6 (   _structure_st,
  _index,
  _field,
  ... 
)
Value:
( MLX_MASK_1 ( _structure_st, _index, _field ) |                     \
          MLX_MASK_5 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 143 of file mlx_bitops.h.

#define MLX_MASK_7 (   _structure_st,
  _index,
  _field,
  ... 
)
Value:
( MLX_MASK_1 ( _structure_st, _index, _field ) |                     \
          MLX_MASK_6 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 147 of file mlx_bitops.h.

#define MLX_MASK_8 (   _structure_st,
  _index,
  _field,
  ... 
)
Value:
( MLX_MASK_1 ( _structure_st, _index, _field ) |                     \
          MLX_MASK_7 ( _structure_st, _index, __VA_ARGS__ ) )

Definition at line 151 of file mlx_bitops.h.

#define MLX_FILL (   _ptr,
  _index,
  _assembled 
)
Value:
do {                                                                 \
                uint32_t *__ptr = &(_ptr)->u.dwords[(_index)];               \
                uint32_t __assembled = (_assembled);                         \
                *__ptr = cpu_to_be32 ( __assembled );                        \
        } while ( 0 )

Definition at line 160 of file mlx_bitops.h.

#define MLX_FILL_1 (   _ptr,
  _index,
  ... 
)
#define MLX_FILL_2 (   _ptr,
  _index,
  ... 
)
#define MLX_FILL_3 (   _ptr,
  _index,
  ... 
)
Value:
MLX_FILL ( _ptr, _index, MLX_ASSEMBLE_3 ( MLX_PSEUDO_STRUCT ( _ptr ),\
                                                  _index, __VA_ARGS__ ) )

Definition at line 175 of file mlx_bitops.h.

Referenced by arbel_cmd(), arbel_create_qp(), arbel_ib_open(), arbel_post_send(), and hermon_eth_open().

#define MLX_FILL_4 (   _ptr,
  _index,
  ... 
)
Value:
MLX_FILL ( _ptr, _index, MLX_ASSEMBLE_4 ( MLX_PSEUDO_STRUCT ( _ptr ),\
                                                  _index, __VA_ARGS__ ) )

Definition at line 179 of file mlx_bitops.h.

Referenced by arbel_create_qp(), arbel_post_send(), hermon_cmd(), and hermon_create_qp().

#define MLX_FILL_5 (   _ptr,
  _index,
  ... 
)
Value:
MLX_FILL ( _ptr, _index, MLX_ASSEMBLE_5 ( MLX_PSEUDO_STRUCT ( _ptr ),\
                                                  _index, __VA_ARGS__ ) )

Definition at line 183 of file mlx_bitops.h.

Referenced by arbel_fill_mlx_send_wqe(), and hermon_fill_mlx_send_wqe().

#define MLX_FILL_6 (   _ptr,
  _index,
  ... 
)
Value:
MLX_FILL ( _ptr, _index, MLX_ASSEMBLE_6 ( MLX_PSEUDO_STRUCT ( _ptr ),\
                                                  _index, __VA_ARGS__ ) )

Definition at line 187 of file mlx_bitops.h.

#define MLX_FILL_7 (   _ptr,
  _index,
  ... 
)
Value:
MLX_FILL ( _ptr, _index, MLX_ASSEMBLE_7 ( MLX_PSEUDO_STRUCT ( _ptr ),\
                                                  _index, __VA_ARGS__ ) )

Definition at line 191 of file mlx_bitops.h.

Referenced by arbel_setup_mpt(), and hermon_setup_mpt().

#define MLX_FILL_8 (   _ptr,
  _index,
  ... 
)
Value:
MLX_FILL ( _ptr, _index, MLX_ASSEMBLE_8 ( MLX_PSEUDO_STRUCT ( _ptr ),\
                                                  _index, __VA_ARGS__ ) )

Definition at line 195 of file mlx_bitops.h.

Referenced by hermon_ib_open().

#define MLX_SET (   _ptr,
  _field,
  _value 
)
Value:
do {                                                                 \
                unsigned int __index =                                       \
                    MLX_DWORD_OFFSET ( MLX_PSEUDO_STRUCT ( _ptr ), _field ); \
                uint32_t *__ptr = &(_ptr)->u.dwords[__index];                \
                uint32_t __value = be32_to_cpu ( *__ptr );                   \
                __value &= ~( MLX_MASK_1 ( MLX_PSEUDO_STRUCT ( _ptr ),       \
                                           __index, _field ) );              \
                __value |= MLX_ASSEMBLE_1 ( MLX_PSEUDO_STRUCT ( _ptr ),      \
                                            __index, _field, _value );       \
                *__ptr = cpu_to_be32 ( __value );                            \
        } while ( 0 )

Definition at line 204 of file mlx_bitops.h.

Referenced by arbel_post_send().

#define MLX_GET (   _ptr,
  _field 
)
#define MLX_FILL_H (   _structure_st,
  _index,
  _field,
  _address 
)

Typedef Documentation

typedef unsigned char pseudo_bit_t

Definition at line 33 of file mlx_bitops.h.


Function Documentation

FILE_LICENCE ( GPL2_OR_LATER  )