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+/**************************************************************************
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+ *
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+ * GPL net driver for Level 5 Etherfabric network cards
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+ *
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+ * Written by Michael Brown <mbrown@fensystems.co.uk>
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+ *
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+ * Copyright Fen Systems Ltd. 2005
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+ * Copyright Level 5 Networks Inc. 2005
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+ *
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+ * This software may be used and distributed according to the terms of
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+ * the GNU General Public License (GPL), incorporated herein by
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+ * reference. Drivers based on or derived from this code fall under
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+ * the GPL and must retain the authorship, copyright and license
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+ * notice. This file is not a complete program and may only be used
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+ * when the entire operating system is licensed under the GPL.
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+ *
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+ **************************************************************************
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+ */
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+
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+#ifndef EFAB_BITFIELD_H
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+#define EFAB_BITFIELD_H
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+
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+/** @file
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+ *
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+ * Etherfabric bitfield access
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+ *
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+ * Etherfabric 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 (efab_oword_t, efab_qword_t and
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+ * efab_dword_t) to be little-endian.
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+ *
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+ * In the less common case of using PIO for individual register
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+ * writes, we construct the little-endian datatype in host memory and
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+ * then use non-swapping equivalents of writel/writeq, rather than
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+ * constructing a native-endian datatype and relying on the implicit
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+ * byte-swapping done by writel/writeq. (We use a similar strategy
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+ * for register reads.)
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+ */
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+
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+/** Dummy field low bit number */
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+#define EFAB_DUMMY_FIELD_LBN 0
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+/** Dummy field width */
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+#define EFAB_DUMMY_FIELD_WIDTH 0
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+/** Dword 0 low bit number */
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+#define EFAB_DWORD_0_LBN 0
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+/** Dword 0 width */
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+#define EFAB_DWORD_0_WIDTH 32
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+/** Dword 1 low bit number */
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+#define EFAB_DWORD_1_LBN 32
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+/** Dword 1 width */
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+#define EFAB_DWORD_1_WIDTH 32
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+/** Dword 2 low bit number */
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+#define EFAB_DWORD_2_LBN 64
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+/** Dword 2 width */
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+#define EFAB_DWORD_2_WIDTH 32
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+/** Dword 3 low bit number */
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+#define EFAB_DWORD_3_LBN 96
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+/** Dword 3 width */
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+#define EFAB_DWORD_3_WIDTH 32
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+
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+/** Specified attribute (e.g. LBN) of the specified field */
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+#define EFAB_VAL(field,attribute) field ## _ ## attribute
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+/** Low bit number of the specified field */
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+#define EFAB_LOW_BIT( field ) EFAB_VAL ( field, LBN )
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+/** Bit width of the specified field */
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+#define EFAB_WIDTH( field ) EFAB_VAL ( field, WIDTH )
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+/** High bit number of the specified field */
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+#define EFAB_HIGH_BIT(field) ( EFAB_LOW_BIT(field) + EFAB_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 EFAB_MASK64( field ) \
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+ ( EFAB_WIDTH(field) == 64 ? ~( ( uint64_t ) 0 ) : \
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+ ( ( ( ( ( uint64_t ) 1 ) << EFAB_WIDTH(field) ) ) - 1 ) )
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+
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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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+ * EFAB_MASK64 for higher width fields.
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+ */
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+#define EFAB_MASK32( field ) \
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+ ( EFAB_WIDTH(field) == 32 ? ~( ( uint32_t ) 0 ) : \
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+ ( ( ( ( ( uint32_t ) 1 ) << EFAB_WIDTH(field) ) ) - 1 ) )
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+
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+/** A doubleword (i.e. 4 byte) datatype
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+ *
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+ * This datatype is defined to be little-endian.
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+ */
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+typedef union efab_dword {
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+ uint32_t u32[1];
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+ uint32_t opaque; /* For bitwise operations between two efab_dwords */
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+} efab_dword_t;
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+
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+/** A quadword (i.e. 8 byte) datatype
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+ *
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+ * This datatype is defined to be little-endian.
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+ */
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+typedef union efab_qword {
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+ uint64_t u64[1];
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+ uint32_t u32[2];
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+ efab_dword_t dword[2];
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+} efab_qword_t;
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+
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+/**
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+ * An octword (eight-word, i.e. 16 byte) datatype
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+ *
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+ * This datatype is defined to be little-endian.
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+ */
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+typedef union efab_oword {
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+ uint64_t u64[2];
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+ efab_qword_t qword[2];
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+ uint32_t u32[4];
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+ efab_dword_t dword[4];
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+} efab_oword_t;
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+
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+/** Format string for printing an efab_dword_t */
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+#define EFAB_DWORD_FMT "%08x"
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+
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+/** Format string for printing an efab_qword_t */
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+#define EFAB_QWORD_FMT "%08x:%08x"
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+
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+/** Format string for printing an efab_oword_t */
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+#define EFAB_OWORD_FMT "%08x:%08x:%08x:%08x"
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+
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+/** printk parameters for printing an efab_dword_t */
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+#define EFAB_DWORD_VAL(dword) \
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+ ( ( unsigned int ) le32_to_cpu ( (dword).u32[0] ) )
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+
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+/** printk parameters for printing an efab_qword_t */
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+#define EFAB_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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+
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+/** printk parameters for printing an efab_oword_t */
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+#define EFAB_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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+/**
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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 EFAB_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 EFAB_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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+/**
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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 EFAB_EXTRACT64( element, min, max, low, high ) \
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+ EFAB_EXTRACT_NATIVE ( le64_to_cpu(element), min, max, low, high )
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+
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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 EFAB_EXTRACT32( element, min, max, low, high ) \
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+ EFAB_EXTRACT_NATIVE ( le32_to_cpu(element), min, max, low, high )
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+
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+#define EFAB_EXTRACT_OWORD64( oword, low, high ) \
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+ ( EFAB_EXTRACT64 ( (oword).u64[0], 0, 63, low, high ) | \
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+ EFAB_EXTRACT64 ( (oword).u64[1], 64, 127, low, high ) )
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+
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+#define EFAB_EXTRACT_QWORD64( qword, low, high ) \
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+ ( EFAB_EXTRACT64 ( (qword).u64[0], 0, 63, low, high ) )
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+
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+#define EFAB_EXTRACT_OWORD32( oword, low, high ) \
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+ ( EFAB_EXTRACT32 ( (oword).u32[0], 0, 31, low, high ) | \
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+ EFAB_EXTRACT32 ( (oword).u32[1], 32, 63, low, high ) | \
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+ EFAB_EXTRACT32 ( (oword).u32[2], 64, 95, low, high ) | \
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+ EFAB_EXTRACT32 ( (oword).u32[3], 96, 127, low, high ) )
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+
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+#define EFAB_EXTRACT_QWORD32( qword, low, high ) \
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+ ( EFAB_EXTRACT32 ( (qword).u32[0], 0, 31, low, high ) | \
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+ EFAB_EXTRACT32 ( (qword).u32[1], 32, 63, low, high ) )
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+
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+#define EFAB_EXTRACT_DWORD( dword, low, high ) \
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+ ( EFAB_EXTRACT32 ( (dword).u32[0], 0, 31, low, high ) )
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+
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+#define EFAB_OWORD_FIELD64( oword, field ) \
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+ ( EFAB_EXTRACT_OWORD64 ( oword, EFAB_LOW_BIT ( field ), \
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+ EFAB_HIGH_BIT ( field ) ) & \
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+ EFAB_MASK64 ( field ) )
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+
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+#define EFAB_QWORD_FIELD64( qword, field ) \
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+ ( EFAB_EXTRACT_QWORD64 ( qword, EFAB_LOW_BIT ( field ), \
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+ EFAB_HIGH_BIT ( field ) ) & \
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+ EFAB_MASK64 ( field ) )
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+
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+#define EFAB_OWORD_FIELD32( oword, field ) \
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+ ( EFAB_EXTRACT_OWORD32 ( oword, EFAB_LOW_BIT ( field ), \
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+ EFAB_HIGH_BIT ( field ) ) & \
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+ EFAB_MASK32 ( field ) )
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+
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+#define EFAB_QWORD_FIELD32( qword, field ) \
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+ ( EFAB_EXTRACT_QWORD32 ( qword, EFAB_LOW_BIT ( field ), \
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+ EFAB_HIGH_BIT ( field ) ) & \
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+ EFAB_MASK32 ( field ) )
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+
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+#define EFAB_DWORD_FIELD( dword, field ) \
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+ ( EFAB_EXTRACT_DWORD ( dword, EFAB_LOW_BIT ( field ), \
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+ EFAB_HIGH_BIT ( field ) ) & \
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+ EFAB_MASK32 ( field ) )
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+
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+#define EFAB_OWORD_IS_ZERO64( oword ) \
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+ ( ! ( (oword).u64[0] || (oword).u64[1] ) )
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+
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+#define EFAB_QWORD_IS_ZERO64( qword ) \
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+ ( ! ( (qword).u64[0] ) )
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+
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+#define EFAB_OWORD_IS_ZERO32( oword ) \
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+ ( ! ( (oword).u32[0] || (oword).u32[1] || \
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+ (oword).u32[2] || (oword).u32[3] ) )
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+
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+#define EFAB_QWORD_IS_ZERO32( qword ) \
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+ ( ! ( (qword).u32[0] || (qword).u32[1] ) )
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+
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+#define EFAB_DWORD_IS_ZERO( dword ) \
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+ ( ! ( (dword).u32[0] ) )
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+
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+#define EFAB_OWORD_IS_ALL_ONES64( oword ) \
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+ ( ( (oword).u64[0] & (oword).u64[1] ) == ~( ( uint64_t ) 0 ) )
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+
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+#define EFAB_QWORD_IS_ALL_ONES64( qword ) \
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+ ( (qword).u64[0] == ~( ( uint64_t ) 0 ) )
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+
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+#define EFAB_OWORD_IS_ALL_ONES32( oword ) \
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+ ( ( (oword).u32[0] & (oword).u32[1] & \
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+ (oword).u32[2] & (oword).u32[3] ) == ~( ( uint32_t ) 0 ) )
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+
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+#define EFAB_QWORD_IS_ALL_ONES32( qword ) \
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+ ( ( (qword).u32[0] & (qword).u32[1] ) == ~( ( uint32_t ) 0 ) )
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+
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+#define EFAB_DWORD_IS_ALL_ONES( dword ) \
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+ ( (dword).u32[0] == ~( ( uint32_t ) 0 ) )
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+
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+#if ( BITS_PER_LONG == 64 )
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+#define EFAB_OWORD_FIELD EFAB_OWORD_FIELD64
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+#define EFAB_QWORD_FIELD EFAB_QWORD_FIELD64
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+#define EFAB_OWORD_IS_ZERO EFAB_OWORD_IS_ZERO64
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+#define EFAB_QWORD_IS_ZERO EFAB_QWORD_IS_ZERO64
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+#define EFAB_OWORD_IS_ALL_ONES EFAB_OWORD_IS_ALL_ONES64
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+#define EFAB_QWORD_IS_ALL_ONES EFAB_QWORD_IS_ALL_ONES64
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+#else
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+#define EFAB_OWORD_FIELD EFAB_OWORD_FIELD32
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+#define EFAB_QWORD_FIELD EFAB_QWORD_FIELD32
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+#define EFAB_OWORD_IS_ZERO EFAB_OWORD_IS_ZERO32
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+#define EFAB_QWORD_IS_ZERO EFAB_QWORD_IS_ZERO32
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+#define EFAB_OWORD_IS_ALL_ONES EFAB_OWORD_IS_ALL_ONES32
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+#define EFAB_QWORD_IS_ALL_ONES EFAB_QWORD_IS_ALL_ONES32
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+#endif
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+
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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 EFAB_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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+ ( ( ( uint64_t ) (value) ) << ( low - min ) ) : \
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+ ( ( ( uint64_t ) (value) ) >> ( min - low ) ) ) )
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+
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+#define EFAB_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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+ ( ( ( uint32_t ) (value) ) << ( low - min ) ) : \
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+ ( ( ( uint32_t ) (value) ) >> ( min - low ) ) ) )
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+
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+#define EFAB_INSERT_NATIVE( min, max, low, high, value ) \
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+ ( ( ( ( max - min ) >= 32 ) || \
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+ ( ( high - low ) >= 32 ) ) \
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+ ? EFAB_INSERT_NATIVE64 ( min, max, low, high, value ) \
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302
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+ : EFAB_INSERT_NATIVE32 ( min, max, low, high, value ) )
|
|
303
|
+
|
|
304
|
+/**
|
|
305
|
+ * Construct bit field portion
|
|
306
|
+ *
|
|
307
|
+ * Creates the portion of the named bit field that lies within the
|
|
308
|
+ * range [min,max).
|
|
309
|
+ */
|
|
310
|
+#define EFAB_INSERT_FIELD_NATIVE( min, max, field, value ) \
|
|
311
|
+ EFAB_INSERT_NATIVE ( min, max, EFAB_LOW_BIT ( field ), \
|
|
312
|
+ EFAB_HIGH_BIT ( field ), value )
|
|
313
|
+
|
|
314
|
+/**
|
|
315
|
+ * Construct bit field
|
|
316
|
+ *
|
|
317
|
+ * Creates the portion of the named bit fields that lie within the
|
|
318
|
+ * range [min,max).
|
|
319
|
+ */
|
|
320
|
+#define EFAB_INSERT_FIELDS_NATIVE( min, max, \
|
|
321
|
+ field1, value1, \
|
|
322
|
+ field2, value2, \
|
|
323
|
+ field3, value3, \
|
|
324
|
+ field4, value4, \
|
|
325
|
+ field5, value5, \
|
|
326
|
+ field6, value6, \
|
|
327
|
+ field7, value7, \
|
|
328
|
+ field8, value8, \
|
|
329
|
+ field9, value9, \
|
|
330
|
+ field10, value10 ) \
|
|
331
|
+ ( EFAB_INSERT_FIELD_NATIVE ( min, max, field1, value1 ) | \
|
|
332
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field2, value2 ) | \
|
|
333
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field3, value3 ) | \
|
|
334
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field4, value4 ) | \
|
|
335
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field5, value5 ) | \
|
|
336
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field6, value6 ) | \
|
|
337
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field7, value7 ) | \
|
|
338
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field8, value8 ) | \
|
|
339
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field9, value9 ) | \
|
|
340
|
+ EFAB_INSERT_FIELD_NATIVE ( min, max, field10, value10 ) )
|
|
341
|
+
|
|
342
|
+#define EFAB_INSERT_FIELDS64( ... ) \
|
|
343
|
+ cpu_to_le64 ( EFAB_INSERT_FIELDS_NATIVE ( __VA_ARGS__ ) )
|
|
344
|
+
|
|
345
|
+#define EFAB_INSERT_FIELDS32( ... ) \
|
|
346
|
+ cpu_to_le32 ( EFAB_INSERT_FIELDS_NATIVE ( __VA_ARGS__ ) )
|
|
347
|
+
|
|
348
|
+#define EFAB_POPULATE_OWORD64( oword, ... ) do { \
|
|
349
|
+ (oword).u64[0] = EFAB_INSERT_FIELDS64 ( 0, 63, __VA_ARGS__ );\
|
|
350
|
+ (oword).u64[1] = EFAB_INSERT_FIELDS64 ( 64, 127, __VA_ARGS__ );\
|
|
351
|
+ } while ( 0 )
|
|
352
|
+
|
|
353
|
+#define EFAB_POPULATE_QWORD64( qword, ... ) do { \
|
|
354
|
+ (qword).u64[0] = EFAB_INSERT_FIELDS64 ( 0, 63, __VA_ARGS__ );\
|
|
355
|
+ } while ( 0 )
|
|
356
|
+
|
|
357
|
+#define EFAB_POPULATE_OWORD32( oword, ... ) do { \
|
|
358
|
+ (oword).u32[0] = EFAB_INSERT_FIELDS32 ( 0, 31, __VA_ARGS__ );\
|
|
359
|
+ (oword).u32[1] = EFAB_INSERT_FIELDS32 ( 32, 63, __VA_ARGS__ );\
|
|
360
|
+ (oword).u32[2] = EFAB_INSERT_FIELDS32 ( 64, 95, __VA_ARGS__ );\
|
|
361
|
+ (oword).u32[3] = EFAB_INSERT_FIELDS32 ( 96, 127, __VA_ARGS__ );\
|
|
362
|
+ } while ( 0 )
|
|
363
|
+
|
|
364
|
+#define EFAB_POPULATE_QWORD32( qword, ... ) do { \
|
|
365
|
+ (qword).u32[0] = EFAB_INSERT_FIELDS32 ( 0, 31, __VA_ARGS__ );\
|
|
366
|
+ (qword).u32[1] = EFAB_INSERT_FIELDS32 ( 32, 63, __VA_ARGS__ );\
|
|
367
|
+ } while ( 0 )
|
|
368
|
+
|
|
369
|
+#define EFAB_POPULATE_DWORD( dword, ... ) do { \
|
|
370
|
+ (dword).u32[0] = EFAB_INSERT_FIELDS32 ( 0, 31, __VA_ARGS__ );\
|
|
371
|
+ } while ( 0 )
|
|
372
|
+
|
|
373
|
+#if ( BITS_PER_LONG == 64 )
|
|
374
|
+#define EFAB_POPULATE_OWORD EFAB_POPULATE_OWORD64
|
|
375
|
+#define EFAB_POPULATE_QWORD EFAB_POPULATE_QWORD64
|
|
376
|
+#else
|
|
377
|
+#define EFAB_POPULATE_OWORD EFAB_POPULATE_OWORD32
|
|
378
|
+#define EFAB_POPULATE_QWORD EFAB_POPULATE_QWORD32
|
|
379
|
+#endif
|
|
380
|
+
|
|
381
|
+/* Populate an octword field with various numbers of arguments */
|
|
382
|
+#define EFAB_POPULATE_OWORD_10 EFAB_POPULATE_OWORD
|
|
383
|
+#define EFAB_POPULATE_OWORD_9( oword, ... ) \
|
|
384
|
+ EFAB_POPULATE_OWORD_10 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
385
|
+#define EFAB_POPULATE_OWORD_8( oword, ... ) \
|
|
386
|
+ EFAB_POPULATE_OWORD_9 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
387
|
+#define EFAB_POPULATE_OWORD_7( oword, ... ) \
|
|
388
|
+ EFAB_POPULATE_OWORD_8 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
389
|
+#define EFAB_POPULATE_OWORD_6( oword, ... ) \
|
|
390
|
+ EFAB_POPULATE_OWORD_7 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
391
|
+#define EFAB_POPULATE_OWORD_5( oword, ... ) \
|
|
392
|
+ EFAB_POPULATE_OWORD_6 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
393
|
+#define EFAB_POPULATE_OWORD_4( oword, ... ) \
|
|
394
|
+ EFAB_POPULATE_OWORD_5 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
395
|
+#define EFAB_POPULATE_OWORD_3( oword, ... ) \
|
|
396
|
+ EFAB_POPULATE_OWORD_4 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
397
|
+#define EFAB_POPULATE_OWORD_2( oword, ... ) \
|
|
398
|
+ EFAB_POPULATE_OWORD_3 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
399
|
+#define EFAB_POPULATE_OWORD_1( oword, ... ) \
|
|
400
|
+ EFAB_POPULATE_OWORD_2 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
401
|
+#define EFAB_ZERO_OWORD( oword ) \
|
|
402
|
+ EFAB_POPULATE_OWORD_1 ( oword, EFAB_DUMMY_FIELD, 0 )
|
|
403
|
+#define EFAB_SET_OWORD( oword ) \
|
|
404
|
+ EFAB_POPULATE_OWORD_4 ( oword, \
|
|
405
|
+ EFAB_DWORD_0, 0xffffffff, \
|
|
406
|
+ EFAB_DWORD_1, 0xffffffff, \
|
|
407
|
+ EFAB_DWORD_2, 0xffffffff, \
|
|
408
|
+ EFAB_DWORD_3, 0xffffffff )
|
|
409
|
+
|
|
410
|
+/* Populate a quadword field with various numbers of arguments */
|
|
411
|
+#define EFAB_POPULATE_QWORD_10 EFAB_POPULATE_QWORD
|
|
412
|
+#define EFAB_POPULATE_QWORD_9( qword, ... ) \
|
|
413
|
+ EFAB_POPULATE_QWORD_10 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
414
|
+#define EFAB_POPULATE_QWORD_8( qword, ... ) \
|
|
415
|
+ EFAB_POPULATE_QWORD_9 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
416
|
+#define EFAB_POPULATE_QWORD_7( qword, ... ) \
|
|
417
|
+ EFAB_POPULATE_QWORD_8 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
418
|
+#define EFAB_POPULATE_QWORD_6( qword, ... ) \
|
|
419
|
+ EFAB_POPULATE_QWORD_7 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
420
|
+#define EFAB_POPULATE_QWORD_5( qword, ... ) \
|
|
421
|
+ EFAB_POPULATE_QWORD_6 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
422
|
+#define EFAB_POPULATE_QWORD_4( qword, ... ) \
|
|
423
|
+ EFAB_POPULATE_QWORD_5 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
424
|
+#define EFAB_POPULATE_QWORD_3( qword, ... ) \
|
|
425
|
+ EFAB_POPULATE_QWORD_4 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
426
|
+#define EFAB_POPULATE_QWORD_2( qword, ... ) \
|
|
427
|
+ EFAB_POPULATE_QWORD_3 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
428
|
+#define EFAB_POPULATE_QWORD_1( qword, ... ) \
|
|
429
|
+ EFAB_POPULATE_QWORD_2 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
430
|
+#define EFAB_ZERO_QWORD( qword ) \
|
|
431
|
+ EFAB_POPULATE_QWORD_1 ( qword, EFAB_DUMMY_FIELD, 0 )
|
|
432
|
+#define EFAB_SET_QWORD( qword ) \
|
|
433
|
+ EFAB_POPULATE_QWORD_2 ( qword, \
|
|
434
|
+ EFAB_DWORD_0, 0xffffffff, \
|
|
435
|
+ EFAB_DWORD_1, 0xffffffff )
|
|
436
|
+
|
|
437
|
+/* Populate a dword field with various numbers of arguments */
|
|
438
|
+#define EFAB_POPULATE_DWORD_10 EFAB_POPULATE_DWORD
|
|
439
|
+#define EFAB_POPULATE_DWORD_9( dword, ... ) \
|
|
440
|
+ EFAB_POPULATE_DWORD_10 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
441
|
+#define EFAB_POPULATE_DWORD_8( dword, ... ) \
|
|
442
|
+ EFAB_POPULATE_DWORD_9 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
443
|
+#define EFAB_POPULATE_DWORD_7( dword, ... ) \
|
|
444
|
+ EFAB_POPULATE_DWORD_8 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
445
|
+#define EFAB_POPULATE_DWORD_6( dword, ... ) \
|
|
446
|
+ EFAB_POPULATE_DWORD_7 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
447
|
+#define EFAB_POPULATE_DWORD_5( dword, ... ) \
|
|
448
|
+ EFAB_POPULATE_DWORD_6 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
449
|
+#define EFAB_POPULATE_DWORD_4( dword, ... ) \
|
|
450
|
+ EFAB_POPULATE_DWORD_5 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
451
|
+#define EFAB_POPULATE_DWORD_3( dword, ... ) \
|
|
452
|
+ EFAB_POPULATE_DWORD_4 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
453
|
+#define EFAB_POPULATE_DWORD_2( dword, ... ) \
|
|
454
|
+ EFAB_POPULATE_DWORD_3 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
455
|
+#define EFAB_POPULATE_DWORD_1( dword, ... ) \
|
|
456
|
+ EFAB_POPULATE_DWORD_2 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ )
|
|
457
|
+#define EFAB_ZERO_DWORD( dword ) \
|
|
458
|
+ EFAB_POPULATE_DWORD_1 ( dword, EFAB_DUMMY_FIELD, 0 )
|
|
459
|
+#define EFAB_SET_DWORD( dword ) \
|
|
460
|
+ EFAB_POPULATE_DWORD_1 ( dword, EFAB_DWORD_0, 0xffffffff )
|
|
461
|
+
|
|
462
|
+/*
|
|
463
|
+ * Modify a named field within an already-populated structure. Used
|
|
464
|
+ * for read-modify-write operations.
|
|
465
|
+ *
|
|
466
|
+ */
|
|
467
|
+
|
|
468
|
+#define EFAB_INSERT_FIELD64( ... ) \
|
|
469
|
+ cpu_to_le64 ( EFAB_INSERT_FIELD_NATIVE ( __VA_ARGS__ ) )
|
|
470
|
+
|
|
471
|
+#define EFAB_INSERT_FIELD32( ... ) \
|
|
472
|
+ cpu_to_le32 ( EFAB_INSERT_FIELD_NATIVE ( __VA_ARGS__ ) )
|
|
473
|
+
|
|
474
|
+#define EFAB_INPLACE_MASK64( min, max, field ) \
|
|
475
|
+ EFAB_INSERT_FIELD64 ( min, max, field, EFAB_MASK64 ( field ) )
|
|
476
|
+
|
|
477
|
+#define EFAB_INPLACE_MASK32( min, max, field ) \
|
|
478
|
+ EFAB_INSERT_FIELD32 ( min, max, field, EFAB_MASK32 ( field ) )
|
|
479
|
+
|
|
480
|
+#define EFAB_SET_OWORD_FIELD64( oword, field, value ) do { \
|
|
481
|
+ (oword).u64[0] = ( ( (oword).u64[0] \
|
|
482
|
+ & ~EFAB_INPLACE_MASK64 ( 0, 63, field ) ) \
|
|
483
|
+ | EFAB_INSERT_FIELD64 ( 0, 63, field, value ) ); \
|
|
484
|
+ (oword).u64[1] = ( ( (oword).u64[1] \
|
|
485
|
+ & ~EFAB_INPLACE_MASK64 ( 64, 127, field ) ) \
|
|
486
|
+ | EFAB_INSERT_FIELD64 ( 64, 127, field, value ) ); \
|
|
487
|
+ } while ( 0 )
|
|
488
|
+
|
|
489
|
+#define EFAB_SET_QWORD_FIELD64( qword, field, value ) do { \
|
|
490
|
+ (qword).u64[0] = ( ( (qword).u64[0] \
|
|
491
|
+ & ~EFAB_INPLACE_MASK64 ( 0, 63, field ) ) \
|
|
492
|
+ | EFAB_INSERT_FIELD64 ( 0, 63, field, value ) ); \
|
|
493
|
+ } while ( 0 )
|
|
494
|
+
|
|
495
|
+#define EFAB_SET_OWORD_FIELD32( oword, field, value ) do { \
|
|
496
|
+ (oword).u32[0] = ( ( (oword).u32[0] \
|
|
497
|
+ & ~EFAB_INPLACE_MASK32 ( 0, 31, field ) ) \
|
|
498
|
+ | EFAB_INSERT_FIELD32 ( 0, 31, field, value ) ); \
|
|
499
|
+ (oword).u32[1] = ( ( (oword).u32[1] \
|
|
500
|
+ & ~EFAB_INPLACE_MASK32 ( 32, 63, field ) ) \
|
|
501
|
+ | EFAB_INSERT_FIELD32 ( 32, 63, field, value ) ); \
|
|
502
|
+ (oword).u32[2] = ( ( (oword).u32[2] \
|
|
503
|
+ & ~EFAB_INPLACE_MASK32 ( 64, 95, field ) ) \
|
|
504
|
+ | EFAB_INSERT_FIELD32 ( 64, 95, field, value ) ); \
|
|
505
|
+ (oword).u32[3] = ( ( (oword).u32[3] \
|
|
506
|
+ & ~EFAB_INPLACE_MASK32 ( 96, 127, field ) ) \
|
|
507
|
+ | EFAB_INSERT_FIELD32 ( 96, 127, field, value ) ); \
|
|
508
|
+ } while ( 0 )
|
|
509
|
+
|
|
510
|
+#define EFAB_SET_QWORD_FIELD32( qword, field, value ) do { \
|
|
511
|
+ (qword).u32[0] = ( ( (qword).u32[0] \
|
|
512
|
+ & ~EFAB_INPLACE_MASK32 ( 0, 31, field ) ) \
|
|
513
|
+ | EFAB_INSERT_FIELD32 ( 0, 31, field, value ) ); \
|
|
514
|
+ (qword).u32[1] = ( ( (qword).u32[1] \
|
|
515
|
+ & ~EFAB_INPLACE_MASK32 ( 32, 63, field ) ) \
|
|
516
|
+ | EFAB_INSERT_FIELD32 ( 32, 63, field, value ) ); \
|
|
517
|
+ } while ( 0 )
|
|
518
|
+
|
|
519
|
+#define EFAB_SET_DWORD_FIELD( dword, field, value ) do { \
|
|
520
|
+ (dword).u32[0] = ( ( (dword).u32[0] \
|
|
521
|
+ & ~EFAB_INPLACE_MASK32 ( 0, 31, field ) ) \
|
|
522
|
+ | EFAB_INSERT_FIELD32 ( 0, 31, field, value ) ); \
|
|
523
|
+ } while ( 0 )
|
|
524
|
+
|
|
525
|
+#if ( BITS_PER_LONG == 64 )
|
|
526
|
+#define EFAB_SET_OWORD_FIELD EFAB_SET_OWORD_FIELD64
|
|
527
|
+#define EFAB_SET_QWORD_FIELD EFAB_SET_QWORD_FIELD64
|
|
528
|
+#else
|
|
529
|
+#define EFAB_SET_OWORD_FIELD EFAB_SET_OWORD_FIELD32
|
|
530
|
+#define EFAB_SET_QWORD_FIELD EFAB_SET_QWORD_FIELD32
|
|
531
|
+#endif
|
|
532
|
+
|
|
533
|
+/* Used to avoid compiler warnings about shift range exceeding width
|
|
534
|
+ * of the data types when dma_addr_t is only 32 bits wide.
|
|
535
|
+ */
|
|
536
|
+#define DMA_ADDR_T_WIDTH ( 8 * sizeof ( dma_addr_t ) )
|
|
537
|
+#define EFAB_DMA_TYPE_WIDTH( width ) \
|
|
538
|
+ ( ( (width) < DMA_ADDR_T_WIDTH ) ? (width) : DMA_ADDR_T_WIDTH )
|
|
539
|
+#define EFAB_DMA_MAX_MASK ( ( DMA_ADDR_T_WIDTH == 64 ) ? \
|
|
540
|
+ ~( ( uint64_t ) 0 ) : ~( ( uint32_t ) 0 ) )
|
|
541
|
+#define EFAB_DMA_MASK(mask) ( (mask) & EFAB_DMA_MAX_MASK )
|
|
542
|
+
|
|
543
|
+#endif /* EFAB_BITFIELD_H */
|
|
544
|
+
|
|
545
|
+/*
|
|
546
|
+ * Local variables:
|
|
547
|
+ * c-basic-offset: 8
|
|
548
|
+ * c-indent-level: 8
|
|
549
|
+ * tab-width: 8
|
|
550
|
+ * End:
|
|
551
|
+ */
|