543 lines
19 KiB
C
543 lines
19 KiB
C
/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2005-2006 Fen Systems Ltd.
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* Copyright 2006-2013 Solarflare Communications Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#ifndef EF4_BITFIELD_H
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#define EF4_BITFIELD_H
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/*
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* Efx bitfield access
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*
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* Efx NICs make extensive use of bitfields up to 128 bits
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* wide. Since there is no native 128-bit datatype on most systems,
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* and since 64-bit datatypes are inefficient on 32-bit systems and
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* vice versa, we wrap accesses in a way that uses the most efficient
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* datatype.
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*
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* The NICs are PCI devices and therefore little-endian. Since most
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* of the quantities that we deal with are DMAed to/from host memory,
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* we define our datatypes (ef4_oword_t, ef4_qword_t and
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* ef4_dword_t) to be little-endian.
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*/
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/* Lowest bit numbers and widths */
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#define EF4_DUMMY_FIELD_LBN 0
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#define EF4_DUMMY_FIELD_WIDTH 0
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#define EF4_WORD_0_LBN 0
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#define EF4_WORD_0_WIDTH 16
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#define EF4_WORD_1_LBN 16
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#define EF4_WORD_1_WIDTH 16
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#define EF4_DWORD_0_LBN 0
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#define EF4_DWORD_0_WIDTH 32
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#define EF4_DWORD_1_LBN 32
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#define EF4_DWORD_1_WIDTH 32
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#define EF4_DWORD_2_LBN 64
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#define EF4_DWORD_2_WIDTH 32
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#define EF4_DWORD_3_LBN 96
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#define EF4_DWORD_3_WIDTH 32
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#define EF4_QWORD_0_LBN 0
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#define EF4_QWORD_0_WIDTH 64
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/* Specified attribute (e.g. LBN) of the specified field */
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#define EF4_VAL(field, attribute) field ## _ ## attribute
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/* Low bit number of the specified field */
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#define EF4_LOW_BIT(field) EF4_VAL(field, LBN)
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/* Bit width of the specified field */
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#define EF4_WIDTH(field) EF4_VAL(field, WIDTH)
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/* High bit number of the specified field */
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#define EF4_HIGH_BIT(field) (EF4_LOW_BIT(field) + EF4_WIDTH(field) - 1)
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/* Mask equal in width to the specified field.
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*
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* For example, a field with width 5 would have a mask of 0x1f.
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*
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* The maximum width mask that can be generated is 64 bits.
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*/
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#define EF4_MASK64(width) \
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((width) == 64 ? ~((u64) 0) : \
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(((((u64) 1) << (width))) - 1))
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/* Mask equal in width to the specified field.
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*
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* For example, a field with width 5 would have a mask of 0x1f.
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*
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* The maximum width mask that can be generated is 32 bits. Use
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* EF4_MASK64 for higher width fields.
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*/
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#define EF4_MASK32(width) \
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((width) == 32 ? ~((u32) 0) : \
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(((((u32) 1) << (width))) - 1))
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/* A doubleword (i.e. 4 byte) datatype - little-endian in HW */
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typedef union ef4_dword {
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__le32 u32[1];
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} ef4_dword_t;
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/* A quadword (i.e. 8 byte) datatype - little-endian in HW */
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typedef union ef4_qword {
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__le64 u64[1];
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__le32 u32[2];
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ef4_dword_t dword[2];
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} ef4_qword_t;
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/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
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typedef union ef4_oword {
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__le64 u64[2];
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ef4_qword_t qword[2];
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__le32 u32[4];
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ef4_dword_t dword[4];
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} ef4_oword_t;
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/* Format string and value expanders for printk */
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#define EF4_DWORD_FMT "%08x"
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#define EF4_QWORD_FMT "%08x:%08x"
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#define EF4_OWORD_FMT "%08x:%08x:%08x:%08x"
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#define EF4_DWORD_VAL(dword) \
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((unsigned int) le32_to_cpu((dword).u32[0]))
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#define EF4_QWORD_VAL(qword) \
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((unsigned int) le32_to_cpu((qword).u32[1])), \
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((unsigned int) le32_to_cpu((qword).u32[0]))
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#define EF4_OWORD_VAL(oword) \
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((unsigned int) le32_to_cpu((oword).u32[3])), \
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((unsigned int) le32_to_cpu((oword).u32[2])), \
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((unsigned int) le32_to_cpu((oword).u32[1])), \
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((unsigned int) le32_to_cpu((oword).u32[0]))
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/*
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* Extract bit field portion [low,high) from the native-endian element
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* which contains bits [min,max).
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*
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* For example, suppose "element" represents the high 32 bits of a
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* 64-bit value, and we wish to extract the bits belonging to the bit
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* field occupying bits 28-45 of this 64-bit value.
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*
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* Then EF4_EXTRACT ( element, 32, 63, 28, 45 ) would give
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*
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* ( element ) << 4
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*
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* The result will contain the relevant bits filled in in the range
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* [0,high-low), with garbage in bits [high-low+1,...).
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*/
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#define EF4_EXTRACT_NATIVE(native_element, min, max, low, high) \
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((low) > (max) || (high) < (min) ? 0 : \
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(low) > (min) ? \
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(native_element) >> ((low) - (min)) : \
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(native_element) << ((min) - (low)))
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/*
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* Extract bit field portion [low,high) from the 64-bit little-endian
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* element which contains bits [min,max)
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*/
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#define EF4_EXTRACT64(element, min, max, low, high) \
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EF4_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
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/*
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* Extract bit field portion [low,high) from the 32-bit little-endian
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* element which contains bits [min,max)
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*/
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#define EF4_EXTRACT32(element, min, max, low, high) \
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EF4_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
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#define EF4_EXTRACT_OWORD64(oword, low, high) \
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((EF4_EXTRACT64((oword).u64[0], 0, 63, low, high) | \
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EF4_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \
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EF4_MASK64((high) + 1 - (low)))
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#define EF4_EXTRACT_QWORD64(qword, low, high) \
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(EF4_EXTRACT64((qword).u64[0], 0, 63, low, high) & \
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EF4_MASK64((high) + 1 - (low)))
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#define EF4_EXTRACT_OWORD32(oword, low, high) \
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((EF4_EXTRACT32((oword).u32[0], 0, 31, low, high) | \
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EF4_EXTRACT32((oword).u32[1], 32, 63, low, high) | \
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EF4_EXTRACT32((oword).u32[2], 64, 95, low, high) | \
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EF4_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \
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EF4_MASK32((high) + 1 - (low)))
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#define EF4_EXTRACT_QWORD32(qword, low, high) \
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((EF4_EXTRACT32((qword).u32[0], 0, 31, low, high) | \
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EF4_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \
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EF4_MASK32((high) + 1 - (low)))
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#define EF4_EXTRACT_DWORD(dword, low, high) \
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(EF4_EXTRACT32((dword).u32[0], 0, 31, low, high) & \
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EF4_MASK32((high) + 1 - (low)))
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#define EF4_OWORD_FIELD64(oword, field) \
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EF4_EXTRACT_OWORD64(oword, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field))
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#define EF4_QWORD_FIELD64(qword, field) \
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EF4_EXTRACT_QWORD64(qword, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field))
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#define EF4_OWORD_FIELD32(oword, field) \
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EF4_EXTRACT_OWORD32(oword, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field))
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#define EF4_QWORD_FIELD32(qword, field) \
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EF4_EXTRACT_QWORD32(qword, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field))
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#define EF4_DWORD_FIELD(dword, field) \
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EF4_EXTRACT_DWORD(dword, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field))
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#define EF4_OWORD_IS_ZERO64(oword) \
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(((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0)
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#define EF4_QWORD_IS_ZERO64(qword) \
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(((qword).u64[0]) == (__force __le64) 0)
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#define EF4_OWORD_IS_ZERO32(oword) \
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(((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
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== (__force __le32) 0)
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#define EF4_QWORD_IS_ZERO32(qword) \
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(((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0)
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#define EF4_DWORD_IS_ZERO(dword) \
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(((dword).u32[0]) == (__force __le32) 0)
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#define EF4_OWORD_IS_ALL_ONES64(oword) \
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(((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0))
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#define EF4_QWORD_IS_ALL_ONES64(qword) \
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((qword).u64[0] == ~((__force __le64) 0))
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#define EF4_OWORD_IS_ALL_ONES32(oword) \
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(((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \
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== ~((__force __le32) 0))
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#define EF4_QWORD_IS_ALL_ONES32(qword) \
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(((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0))
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#define EF4_DWORD_IS_ALL_ONES(dword) \
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((dword).u32[0] == ~((__force __le32) 0))
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#if BITS_PER_LONG == 64
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#define EF4_OWORD_FIELD EF4_OWORD_FIELD64
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#define EF4_QWORD_FIELD EF4_QWORD_FIELD64
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#define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO64
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#define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO64
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#define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES64
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#define EF4_QWORD_IS_ALL_ONES EF4_QWORD_IS_ALL_ONES64
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#else
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#define EF4_OWORD_FIELD EF4_OWORD_FIELD32
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#define EF4_QWORD_FIELD EF4_QWORD_FIELD32
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#define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO32
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#define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO32
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#define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES32
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#define EF4_QWORD_IS_ALL_ONES EF4_QWORD_IS_ALL_ONES32
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#endif
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/*
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* Construct bit field portion
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*
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* Creates the portion of the bit field [low,high) that lies within
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* the range [min,max).
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*/
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#define EF4_INSERT_NATIVE64(min, max, low, high, value) \
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(((low > max) || (high < min)) ? 0 : \
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((low > min) ? \
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(((u64) (value)) << (low - min)) : \
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(((u64) (value)) >> (min - low))))
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#define EF4_INSERT_NATIVE32(min, max, low, high, value) \
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(((low > max) || (high < min)) ? 0 : \
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((low > min) ? \
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(((u32) (value)) << (low - min)) : \
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(((u32) (value)) >> (min - low))))
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#define EF4_INSERT_NATIVE(min, max, low, high, value) \
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((((max - min) >= 32) || ((high - low) >= 32)) ? \
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EF4_INSERT_NATIVE64(min, max, low, high, value) : \
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EF4_INSERT_NATIVE32(min, max, low, high, value))
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/*
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* Construct bit field portion
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*
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* Creates the portion of the named bit field that lies within the
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* range [min,max).
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*/
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#define EF4_INSERT_FIELD_NATIVE(min, max, field, value) \
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EF4_INSERT_NATIVE(min, max, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field), value)
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/*
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* Construct bit field
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*
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* Creates the portion of the named bit fields that lie within the
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* range [min,max).
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*/
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#define EF4_INSERT_FIELDS_NATIVE(min, max, \
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field1, value1, \
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field2, value2, \
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field3, value3, \
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field4, value4, \
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field5, value5, \
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field6, value6, \
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field7, value7, \
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field8, value8, \
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field9, value9, \
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field10, value10) \
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(EF4_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \
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EF4_INSERT_FIELD_NATIVE((min), (max), field10, (value10)))
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#define EF4_INSERT_FIELDS64(...) \
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cpu_to_le64(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__))
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#define EF4_INSERT_FIELDS32(...) \
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cpu_to_le32(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__))
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#define EF4_POPULATE_OWORD64(oword, ...) do { \
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(oword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
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(oword).u64[1] = EF4_INSERT_FIELDS64(64, 127, __VA_ARGS__); \
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} while (0)
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#define EF4_POPULATE_QWORD64(qword, ...) do { \
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(qword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \
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} while (0)
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#define EF4_POPULATE_OWORD32(oword, ...) do { \
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(oword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
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(oword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
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(oword).u32[2] = EF4_INSERT_FIELDS32(64, 95, __VA_ARGS__); \
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(oword).u32[3] = EF4_INSERT_FIELDS32(96, 127, __VA_ARGS__); \
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} while (0)
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#define EF4_POPULATE_QWORD32(qword, ...) do { \
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(qword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
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(qword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \
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} while (0)
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#define EF4_POPULATE_DWORD(dword, ...) do { \
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(dword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \
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} while (0)
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#if BITS_PER_LONG == 64
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#define EF4_POPULATE_OWORD EF4_POPULATE_OWORD64
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#define EF4_POPULATE_QWORD EF4_POPULATE_QWORD64
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#else
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#define EF4_POPULATE_OWORD EF4_POPULATE_OWORD32
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#define EF4_POPULATE_QWORD EF4_POPULATE_QWORD32
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#endif
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/* Populate an octword field with various numbers of arguments */
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#define EF4_POPULATE_OWORD_10 EF4_POPULATE_OWORD
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#define EF4_POPULATE_OWORD_9(oword, ...) \
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EF4_POPULATE_OWORD_10(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_8(oword, ...) \
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EF4_POPULATE_OWORD_9(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_7(oword, ...) \
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EF4_POPULATE_OWORD_8(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_6(oword, ...) \
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EF4_POPULATE_OWORD_7(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_5(oword, ...) \
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EF4_POPULATE_OWORD_6(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_4(oword, ...) \
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EF4_POPULATE_OWORD_5(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_3(oword, ...) \
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EF4_POPULATE_OWORD_4(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_2(oword, ...) \
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EF4_POPULATE_OWORD_3(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_OWORD_1(oword, ...) \
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EF4_POPULATE_OWORD_2(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_ZERO_OWORD(oword) \
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EF4_POPULATE_OWORD_1(oword, EF4_DUMMY_FIELD, 0)
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#define EF4_SET_OWORD(oword) \
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EF4_POPULATE_OWORD_4(oword, \
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EF4_DWORD_0, 0xffffffff, \
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EF4_DWORD_1, 0xffffffff, \
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EF4_DWORD_2, 0xffffffff, \
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EF4_DWORD_3, 0xffffffff)
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/* Populate a quadword field with various numbers of arguments */
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#define EF4_POPULATE_QWORD_10 EF4_POPULATE_QWORD
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#define EF4_POPULATE_QWORD_9(qword, ...) \
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EF4_POPULATE_QWORD_10(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_8(qword, ...) \
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EF4_POPULATE_QWORD_9(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_7(qword, ...) \
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EF4_POPULATE_QWORD_8(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_6(qword, ...) \
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EF4_POPULATE_QWORD_7(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_5(qword, ...) \
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EF4_POPULATE_QWORD_6(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_4(qword, ...) \
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EF4_POPULATE_QWORD_5(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_3(qword, ...) \
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EF4_POPULATE_QWORD_4(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_2(qword, ...) \
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EF4_POPULATE_QWORD_3(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_QWORD_1(qword, ...) \
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EF4_POPULATE_QWORD_2(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_ZERO_QWORD(qword) \
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EF4_POPULATE_QWORD_1(qword, EF4_DUMMY_FIELD, 0)
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#define EF4_SET_QWORD(qword) \
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EF4_POPULATE_QWORD_2(qword, \
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EF4_DWORD_0, 0xffffffff, \
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EF4_DWORD_1, 0xffffffff)
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/* Populate a dword field with various numbers of arguments */
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#define EF4_POPULATE_DWORD_10 EF4_POPULATE_DWORD
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#define EF4_POPULATE_DWORD_9(dword, ...) \
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EF4_POPULATE_DWORD_10(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_8(dword, ...) \
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EF4_POPULATE_DWORD_9(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_7(dword, ...) \
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EF4_POPULATE_DWORD_8(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_6(dword, ...) \
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EF4_POPULATE_DWORD_7(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_5(dword, ...) \
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EF4_POPULATE_DWORD_6(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_4(dword, ...) \
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EF4_POPULATE_DWORD_5(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_3(dword, ...) \
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EF4_POPULATE_DWORD_4(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_2(dword, ...) \
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EF4_POPULATE_DWORD_3(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_POPULATE_DWORD_1(dword, ...) \
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EF4_POPULATE_DWORD_2(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__)
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#define EF4_ZERO_DWORD(dword) \
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EF4_POPULATE_DWORD_1(dword, EF4_DUMMY_FIELD, 0)
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#define EF4_SET_DWORD(dword) \
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EF4_POPULATE_DWORD_1(dword, EF4_DWORD_0, 0xffffffff)
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/*
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* Modify a named field within an already-populated structure. Used
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* for read-modify-write operations.
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*
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*/
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#define EF4_INVERT_OWORD(oword) do { \
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(oword).u64[0] = ~((oword).u64[0]); \
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(oword).u64[1] = ~((oword).u64[1]); \
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} while (0)
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#define EF4_AND_OWORD(oword, from, mask) \
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do { \
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(oword).u64[0] = (from).u64[0] & (mask).u64[0]; \
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(oword).u64[1] = (from).u64[1] & (mask).u64[1]; \
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} while (0)
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#define EF4_OR_OWORD(oword, from, mask) \
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do { \
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(oword).u64[0] = (from).u64[0] | (mask).u64[0]; \
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(oword).u64[1] = (from).u64[1] | (mask).u64[1]; \
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} while (0)
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#define EF4_INSERT64(min, max, low, high, value) \
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cpu_to_le64(EF4_INSERT_NATIVE(min, max, low, high, value))
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#define EF4_INSERT32(min, max, low, high, value) \
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cpu_to_le32(EF4_INSERT_NATIVE(min, max, low, high, value))
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#define EF4_INPLACE_MASK64(min, max, low, high) \
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EF4_INSERT64(min, max, low, high, EF4_MASK64((high) + 1 - (low)))
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#define EF4_INPLACE_MASK32(min, max, low, high) \
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EF4_INSERT32(min, max, low, high, EF4_MASK32((high) + 1 - (low)))
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#define EF4_SET_OWORD64(oword, low, high, value) do { \
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(oword).u64[0] = (((oword).u64[0] \
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& ~EF4_INPLACE_MASK64(0, 63, low, high)) \
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| EF4_INSERT64(0, 63, low, high, value)); \
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(oword).u64[1] = (((oword).u64[1] \
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& ~EF4_INPLACE_MASK64(64, 127, low, high)) \
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| EF4_INSERT64(64, 127, low, high, value)); \
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} while (0)
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#define EF4_SET_QWORD64(qword, low, high, value) do { \
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(qword).u64[0] = (((qword).u64[0] \
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& ~EF4_INPLACE_MASK64(0, 63, low, high)) \
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| EF4_INSERT64(0, 63, low, high, value)); \
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} while (0)
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#define EF4_SET_OWORD32(oword, low, high, value) do { \
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(oword).u32[0] = (((oword).u32[0] \
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& ~EF4_INPLACE_MASK32(0, 31, low, high)) \
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| EF4_INSERT32(0, 31, low, high, value)); \
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(oword).u32[1] = (((oword).u32[1] \
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& ~EF4_INPLACE_MASK32(32, 63, low, high)) \
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| EF4_INSERT32(32, 63, low, high, value)); \
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(oword).u32[2] = (((oword).u32[2] \
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& ~EF4_INPLACE_MASK32(64, 95, low, high)) \
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| EF4_INSERT32(64, 95, low, high, value)); \
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(oword).u32[3] = (((oword).u32[3] \
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& ~EF4_INPLACE_MASK32(96, 127, low, high)) \
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| EF4_INSERT32(96, 127, low, high, value)); \
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} while (0)
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|
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#define EF4_SET_QWORD32(qword, low, high, value) do { \
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(qword).u32[0] = (((qword).u32[0] \
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& ~EF4_INPLACE_MASK32(0, 31, low, high)) \
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| EF4_INSERT32(0, 31, low, high, value)); \
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(qword).u32[1] = (((qword).u32[1] \
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& ~EF4_INPLACE_MASK32(32, 63, low, high)) \
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| EF4_INSERT32(32, 63, low, high, value)); \
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} while (0)
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|
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#define EF4_SET_DWORD32(dword, low, high, value) do { \
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|
(dword).u32[0] = (((dword).u32[0] \
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& ~EF4_INPLACE_MASK32(0, 31, low, high)) \
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| EF4_INSERT32(0, 31, low, high, value)); \
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} while (0)
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#define EF4_SET_OWORD_FIELD64(oword, field, value) \
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EF4_SET_OWORD64(oword, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field), value)
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|
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#define EF4_SET_QWORD_FIELD64(qword, field, value) \
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EF4_SET_QWORD64(qword, EF4_LOW_BIT(field), \
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|
EF4_HIGH_BIT(field), value)
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|
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|
#define EF4_SET_OWORD_FIELD32(oword, field, value) \
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|
EF4_SET_OWORD32(oword, EF4_LOW_BIT(field), \
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EF4_HIGH_BIT(field), value)
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|
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#define EF4_SET_QWORD_FIELD32(qword, field, value) \
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EF4_SET_QWORD32(qword, EF4_LOW_BIT(field), \
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|
EF4_HIGH_BIT(field), value)
|
|
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#define EF4_SET_DWORD_FIELD(dword, field, value) \
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|
EF4_SET_DWORD32(dword, EF4_LOW_BIT(field), \
|
|
EF4_HIGH_BIT(field), value)
|
|
|
|
|
|
|
|
#if BITS_PER_LONG == 64
|
|
#define EF4_SET_OWORD_FIELD EF4_SET_OWORD_FIELD64
|
|
#define EF4_SET_QWORD_FIELD EF4_SET_QWORD_FIELD64
|
|
#else
|
|
#define EF4_SET_OWORD_FIELD EF4_SET_OWORD_FIELD32
|
|
#define EF4_SET_QWORD_FIELD EF4_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 EF4_DMA_TYPE_WIDTH(width) \
|
|
(((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
|
|
|
|
|
|
/* Static initialiser */
|
|
#define EF4_OWORD32(a, b, c, d) \
|
|
{ .u32 = { cpu_to_le32(a), cpu_to_le32(b), \
|
|
cpu_to_le32(c), cpu_to_le32(d) } }
|
|
|
|
#endif /* EF4_BITFIELD_H */
|