/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2009 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#ifndef EFX_BITFIELD_H
#define EFX_BITFIELD_H
/*
* Efx bitfield access
*
* Efx NICs make extensive use of bitfields up to 128 bits
* wide. Since there is no native 128-bit datatype on most systems,
* and since 64-bit datatypes are inefficient on 32-bit systems and
* vice versa, we wrap accesses in a way that uses the most efficient
* datatype.
*
* The NICs are PCI devices and therefore little-endian. Since most
* of the quantities that we deal with are DMAed to/from host memory,
* we define our datatypes (efx_oword_t, efx_qword_t and
* efx_dword_t) to be little-endian.
*/
/* Lowest bit numbers and widths */
#define EFX_DUMMY_FIELD_LBN 0
#define EFX_DUMMY_FIELD_WIDTH 0
#define EFX_DWORD_0_LBN 0
#define EFX_DWORD_0_WIDTH 32
#define EFX_DWORD_1_LBN 32
#define EFX_DWORD_1_WIDTH 32
#define EFX_DWORD_2_LBN 64
#define EFX_DWORD_2_WIDTH 32
#define EFX_DWORD_3_LBN 96
#define EFX_DWORD_3_WIDTH 32
#define EFX_QWORD_0_LBN 0
#define EFX_QWORD_0_WIDTH 64
/* Specified attribute (e.g. LBN) of the specified field */
#define EFX_VAL(field, attribute) field ## _ ## attribute
/* Low bit number of the specified field */
#define EFX_LOW_BIT(field) EFX_VAL(field, LBN)
/* Bit width of the specified field */
#define EFX_WIDTH(field) EFX_VAL(field, WIDTH)
/* High bit number of the specified field */
#define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1)
/* Mask equal in width to the specified field.
*
* For example, a field with width 5 would have a mask of 0x1f.
*
* The maximum width mask that can be generated is 64 bits.
*/
#define EFX_MASK64(width) \
((width) == 64 ? ~((u64) 0) : \
(((((u64) 1) << (width))) - 1))
/* Mask equal in width to the specified field.
*
* For example, a field with width 5 would have a mask of 0x1f.
*
* The maximum width mask that can be generated is 32 bits. Use
* EFX_MASK64 for higher width fields.
*/
#define EFX_MASK32(width) \
((width) == 32 ? ~((u32) 0) : \
(((((u32) 1) << (width))) - 1))
/* A doubleword (i.e. 4 byte) datatype - little-endian in HW */
typedef union efx_dword {
__le32 u32[1];
} efx_dword_t;
/* A quadword (i.e. 8 byte) datatype - little-endian in HW */
typedef union efx_qword {
__le64 u64[1];
__le32 u32[2];
efx_dword_t dword[2];
} efx_qword_t;
/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
typedef union efx_oword {
__le64 u64[2];
efx_qword_t qword[2];
__le32 u32[4];
efx_dword_t dword[4];
} efx_oword_t;
/* Format string and value expanders for printk */
#define EFX_DWORD_FMT "%08x"
#define EFX_QWORD_FMT "%08x:%08x"
#define EFX_OWORD_FMT "%08x:%08x:%08x:%08x"
#define EFX_DWORD_VAL(dword) \
((unsigned int) le32_to_cpu((dword).u32[0]))
#define EFX_QWORD_VAL(qword) \
((unsigned int) le32_to_cpu((qword).u32[1])), \
((unsigned int) le32_to_cpu((qword).u32[0]))
#define EFX_OWORD_VAL(oword) \
((unsigned int) le32_to_cpu((oword).u32[3])), \
((unsigned int) le32_to_cpu((oword).u32[2])), \
((unsigned int) le32_to_cpu((oword).u32[1])), \
((unsigned int) le32_to_cpu((oword).u32[0]))
/*
* Extract bit field portion [low,high) from the native-endian element
* which contains bits [min,max).
*
* For example, suppose "element" represents the high 32 bits of a
* 64-bit value, and we wish to extract the bits belonging to the bit
* field occupying bits 28-45 of this 64-bit value.
*
* Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give
*
* ( element ) << 4
*
* The result will contain the relevant bits filled in in the range
* [0,high-low), with garbage in bits [high-low+1,...).
*/
#define EFX_EXTRACT_NATIVE(native_element, min, max, low, high) \
(((low > max) || (high < min)) ? 0 : \
((low > min) ? \
((native_element) >> (low - min)) : \
((native_element) << (min - low))))
/*
* Extract bit field portion [low,high) from the 64-bit little-endian
* element which contains bits [min,max)
*/
#define EFX_EXTRACT64(element, min, max, low, high) \
EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
/*
* Extract bit field portion [low,high) from the 32-bit little-endian
* element which contains bits [min,max)
*/
#define EFX_EXTRACT32(element, min, max, low, high) \
EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
#define EFX_EXTRACT_OWORD64(oword, low, high) \
((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) | \
EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \
EFX_MASK64(high + 1 - low))
#define EFX_EXTRACT_QWORD64(qword, low, high) \
(EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) & \
EFX_MASK64(high + 1 - low))
#define EFX_EXTRACT_OWORD32(oword, low, high) \
((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) | \
EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) | \
EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) | \
EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \
EFX_MASK32(high + 1 - low))
#define EFX_EXTRACT_QWORD32(qword, low, high) \
((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) | \
EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \
EFX_MASK32(high + 1 - low))
#define EFX_EXTRACT_DWORD(dword, low, high) \
(EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) & \
EFX_MASK32(high + 1 - low))
#define EFX_OWORD_FIELD64(oword, field) \
EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field))
#define EFX_QWORD_FIELD64(qword, field) \
EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field))
#define EFX_OWORD_FIELD32(oword, field) \
EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field))
#define EFX_QWORD_FIELD32(qword, field) \
EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field))
#define EFX_DWORD_FIELD(dword, field) \
EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field))
#define EFX_OWORD_IS_ZERO64(oword) \
(((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0)
#define EFX_QWORD_IS_ZERO64(qword) \
(((qword).u64[0]) == (__force __le64) 0)
#define EFX_OWORD_IS_ZERO32(oword) \
(((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
== (__force __le32) 0)
#define EFX_QWORD_IS_ZERO32(qword) \
(((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0)
#define EFX_DWORD_IS_ZERO(dword) \
(((dword).u32[0]) == (__force __le32) 0)
#define EFX_OWORD_IS_ALL_ONES64(oword) \
(((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0))
#define EFX_QWORD_IS_ALL_ONES64(qword) \
((qword).u64[0] == ~((__force __le64) 0))
#define EFX_OWORD_IS_ALL_ONES32(oword) \
(((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \
== ~((__force __le32) 0))
#define EFX_QWORD_IS_ALL_ONES32(qword) \
(((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0))
#define EFX_DWORD_IS_ALL_ONES(dword) \
((dword).u32[0] == ~((__force __le32) 0))
#if BITS_PER_LONG == 64
#define EFX_OWORD_FIELD EFX_OWORD_FIELD64
#define EFX_QWORD_FIELD EFX_QWORD_FIELD64
#define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO64
#define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO64
#define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES64
#define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES64
#else
#define EFX_OWORD_FIELD EFX_OWORD_FIELD32
#define EFX_QWORD_FIELD EFX_QWORD_FIELD32
#define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO32
#define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO32
#define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES32
#define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES32
#endif
/*
* Construct bit field portion
*
* Creates the portion of the bit field [low,high) that lies within
* the range [min,max).
*/
#define EFX_INSERT_NATIVE64(min, max, low, high, value) \
(((low > max) || (high < min)) ? 0 : \
((low > min) ? \
(((u64) (value)) << (low - min)) : \
(((u64) (value)) >> (min - low))))
#define EFX_INSERT_NATIVE32(min, max, low, high, value) \
(((low > max) || (high < min)) ? 0 : \
((low > min) ? \
(((u32) (value)) << (low - min)) : \
(((u32) (value)) >> (min - low))))
#define EFX_INSERT_NATIVE(min, max, low, high, value) \
((((max - min) >= 32) || ((high - low) >= 32)) ? \
EFX_INSERT_NATIVE64(min, max, low, high, value) : \
EFX_INSERT_NATIVE32(min, max, low, high, value))
/*
* Construct bit field portion
*
* Creates the portion of the named bit field that lies within the
* range [min,max).
*/
#define EFX_INSERT_FIELD_NATIVE(min, max, field, value) \
EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field), value)
/*
* Construct bit field
*
* Creates the portion of the named bit fields that lie within the
* range [min,max).
*/
#define EFX_INSERT_FIELDS_NATIVE(min, max, \
field1, value1, \
field2, value2, \
field3, value3, \
field4, value4, \
field5, value5, \
field6, value6, \
field7, value7, \
field8, value8, \
field9, value9, \
field10, value10) \
(EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \
EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10)))
#define EFX_INSERT_FIELDS64(...) \
cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
#define EFX_INSERT_FIELDS32(...) \
cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
#define EFX_POPULATE_OWORD64(oword, ...) do { \
(oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
(oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__); \
} while (0)
#define EFX_POPULATE_QWORD64(qword, ...) do { \
(qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
} while (0)
#define EFX_POPULATE_OWORD32(oword, ...) do { \
(oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
(oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
(oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__); \
(oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__); \
} while (0)
#define EFX_POPULATE_QWORD32(qword, ...) do { \
(qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
(qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
} while (0)
#define EFX_POPULATE_DWORD(dword, ...) do { \
(dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
} while (0)
#if BITS_PER_LONG == 64
#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64
#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64
#else
#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32
#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32
#endif
/* Populate an octword field with various numbers of arguments */
#define EFX_POPULATE_OWORD_10 EFX_POPULATE_OWORD
#define EFX_POPULATE_OWORD_9(oword, ...) \
EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_8(oword, ...) \
EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_7(oword, ...) \
EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_6(oword, ...) \
EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_5(oword, ...) \
EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_4(oword, ...) \
EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_3(oword, ...) \
EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_2(oword, ...) \
EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_OWORD_1(oword, ...) \
EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_ZERO_OWORD(oword) \
EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0)
#define EFX_SET_OWORD(oword) \
EFX_POPULATE_OWORD_4(oword, \
EFX_DWORD_0, 0xffffffff, \
EFX_DWORD_1, 0xffffffff, \
EFX_DWORD_2, 0xffffffff, \
EFX_DWORD_3, 0xffffffff)
/* Populate a quadword field with various numbers of arguments */
#define EFX_POPULATE_QWORD_10 EFX_POPULATE_QWORD
#define EFX_POPULATE_QWORD_9(qword, ...) \
EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_8(qword, ...) \
EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_7(qword, ...) \
EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_6(qword, ...) \
EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_5(qword, ...) \
EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_4(qword, ...) \
EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_3(qword, ...) \
EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_2(qword, ...) \
EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_QWORD_1(qword, ...) \
EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_ZERO_QWORD(qword) \
EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0)
#define EFX_SET_QWORD(qword) \
EFX_POPULATE_QWORD_2(qword, \
EFX_DWORD_0, 0xffffffff, \
EFX_DWORD_1, 0xffffffff)
/* Populate a dword field with various numbers of arguments */
#define EFX_POPULATE_DWORD_10 EFX_POPULATE_DWORD
#define EFX_POPULATE_DWORD_9(dword, ...) \
EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_8(dword, ...) \
EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_7(dword, ...) \
EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_6(dword, ...) \
EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_5(dword, ...) \
EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_4(dword, ...) \
EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_3(dword, ...) \
EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_2(dword, ...) \
EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_POPULATE_DWORD_1(dword, ...) \
EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
#define EFX_ZERO_DWORD(dword) \
EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0)
#define EFX_SET_DWORD(dword) \
EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff)
/*
* Modify a named field within an already-populated structure. Used
* for read-modify-write operations.
*
*/
#define EFX_INVERT_OWORD(oword) do { \
(oword).u64[0] = ~((oword).u64[0]); \
(oword).u64[1] = ~((oword).u64[1]); \
} while (0)
#define EFX_AND_OWORD(oword, from, mask) \
do { \
(oword).u64[0] = (from).u64[0] & (mask).u64[0]; \
(oword).u64[1] = (from).u64[1] & (mask).u64[1]; \
} while (0)
#define EFX_OR_OWORD(oword, from, mask) \
do { \
(oword).u64[0] = (from).u64[0] | (mask).u64[0]; \
(oword).u64[1] = (from).u64[1] | (mask).u64[1]; \
} while (0)
#define EFX_INSERT64(min, max, low, high, value) \
cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value))
#define EFX_INSERT32(min, max, low, high, value) \
cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value))
#define EFX_INPLACE_MASK64(min, max, low, high) \
EFX_INSERT64(min, max, low, high, EFX_MASK64(high + 1 - low))
#define EFX_INPLACE_MASK32(min, max, low, high) \
EFX_INSERT32(min, max, low, high, EFX_MASK32(high + 1 - low))
#define EFX_SET_OWORD64(oword, low, high, value) do { \
(oword).u64[0] = (((oword).u64[0] \
& ~EFX_INPLACE_MASK64(0, 63, low, high)) \
| EFX_INSERT64(0, 63, low, high, value)); \
(oword).u64[1] = (((oword).u64[1] \
& ~EFX_INPLACE_MASK64(64, 127, low, high)) \
| EFX_INSERT64(64, 127, low, high, value)); \
} while (0)
#define EFX_SET_QWORD64(qword, low, high, value) do { \
(qword).u64[0] = (((qword).u64[0] \
& ~EFX_INPLACE_MASK64(0, 63, low, high)) \
| EFX_INSERT64(0, 63, low, high, value)); \
} while (0)
#define EFX_SET_OWORD32(oword, low, high, value) do { \
(oword).u32[0] = (((oword).u32[0] \
& ~EFX_INPLACE_MASK32(0, 31, low, high)) \
| EFX_INSERT32(0, 31, low, high, value)); \
(oword).u32[1] = (((oword).u32[1] \
& ~EFX_INPLACE_MASK32(32, 63, low, high)) \
| EFX_INSERT32(32, 63, low, high, value)); \
(oword).u32[2] = (((oword).u32[2] \
& ~EFX_INPLACE_MASK32(64, 95, low, high)) \
| EFX_INSERT32(64, 95, low, high, value)); \
(oword).u32[3] = (((oword).u32[3] \
& ~EFX_INPLACE_MASK32(96, 127, low, high)) \
| EFX_INSERT32(96, 127, low, high, value)); \
} while (0)
#define EFX_SET_QWORD32(qword, low, high, value) do { \
(qword).u32[0] = (((qword).u32[0] \
& ~EFX_INPLACE_MASK32(0, 31, low, high)) \
| EFX_INSERT32(0, 31, low, high, value)); \
(qword).u32[1] = (((qword).u32[1] \
& ~EFX_INPLACE_MASK32(32, 63, low, high)) \
| EFX_INSERT32(32, 63, low, high, value)); \
} while (0)
#define EFX_SET_DWORD32(dword, low, high, value) do { \
(dword).u32[0] = (((dword).u32[0] \
& ~EFX_INPLACE_MASK32(0, 31, low, high)) \
| EFX_INSERT32(0, 31, low, high, value)); \
} while (0)
#define EFX_SET_OWORD_FIELD64(oword, field, value) \
EFX_SET_OWORD64(oword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field), value)
#define EFX_SET_QWORD_FIELD64(qword, field, value) \
EFX_SET_QWORD64(qword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field), value)
#define EFX_SET_OWORD_FIELD32(oword, field, value) \
EFX_SET_OWORD32(oword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field), value)
#define EFX_SET_QWORD_FIELD32(qword, field, value) \
EFX_SET_QWORD32(qword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field), value)
#define EFX_SET_DWORD_FIELD(dword, field, value) \
EFX_SET_DWORD32(dword, EFX_LOW_BIT(field), \
EFX_HIGH_BIT(field), value)
#if BITS_PER_LONG == 64
#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64
#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64
#else
#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32
#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32
#endif
/* Used to avoid compiler warnings about shift range exceeding width
* of the data types when dma_addr_t is only 32 bits wide.
*/
#define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t))
#define EFX_DMA_TYPE_WIDTH(width) \
(((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
/* Static initialiser */
#define EFX_OWORD32(a, b, c, d) \
{ .u32 = { cpu_to_le32(a), cpu_to_le32(b), \
cpu_to_le32(c), cpu_to_le32(d) } }
#endif /* EFX_BITFIELD_H */
