diff options
Diffstat (limited to 'debian/grub-extras/disabled/gpxe/src/drivers/net/etherfabric.h')
| -rw-r--r-- | debian/grub-extras/disabled/gpxe/src/drivers/net/etherfabric.h | 553 |
1 files changed, 553 insertions, 0 deletions
diff --git a/debian/grub-extras/disabled/gpxe/src/drivers/net/etherfabric.h b/debian/grub-extras/disabled/gpxe/src/drivers/net/etherfabric.h new file mode 100644 index 0000000..9657eb7 --- /dev/null +++ b/debian/grub-extras/disabled/gpxe/src/drivers/net/etherfabric.h @@ -0,0 +1,553 @@ +/************************************************************************** + * + * GPL net driver for Level 5 Etherfabric network cards + * + * Written by Michael Brown <mbrown@fensystems.co.uk> + * + * Copyright Fen Systems Ltd. 2005 + * Copyright Level 5 Networks Inc. 2005 + * + * This software may be used and distributed according to the terms of + * the GNU General Public License (GPL), incorporated herein by + * reference. Drivers based on or derived from this code fall under + * the GPL and must retain the authorship, copyright and license + * notice. This file is not a complete program and may only be used + * when the entire operating system is licensed under the GPL. + * + ************************************************************************** + */ + +FILE_LICENCE ( GPL_ANY ); + +#ifndef EFAB_BITFIELD_H +#define EFAB_BITFIELD_H + +/** @file + * + * Etherfabric bitfield access + * + * Etherfabric 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 (efab_oword_t, efab_qword_t and + * efab_dword_t) to be little-endian. + * + * In the less common case of using PIO for individual register + * writes, we construct the little-endian datatype in host memory and + * then use non-swapping equivalents of writel/writeq, rather than + * constructing a native-endian datatype and relying on the implicit + * byte-swapping done by writel/writeq. (We use a similar strategy + * for register reads.) + */ + +/** Dummy field low bit number */ +#define EFAB_DUMMY_FIELD_LBN 0 +/** Dummy field width */ +#define EFAB_DUMMY_FIELD_WIDTH 0 +/** Dword 0 low bit number */ +#define EFAB_DWORD_0_LBN 0 +/** Dword 0 width */ +#define EFAB_DWORD_0_WIDTH 32 +/** Dword 1 low bit number */ +#define EFAB_DWORD_1_LBN 32 +/** Dword 1 width */ +#define EFAB_DWORD_1_WIDTH 32 +/** Dword 2 low bit number */ +#define EFAB_DWORD_2_LBN 64 +/** Dword 2 width */ +#define EFAB_DWORD_2_WIDTH 32 +/** Dword 3 low bit number */ +#define EFAB_DWORD_3_LBN 96 +/** Dword 3 width */ +#define EFAB_DWORD_3_WIDTH 32 + +/** Specified attribute (e.g. LBN) of the specified field */ +#define EFAB_VAL(field,attribute) field ## _ ## attribute +/** Low bit number of the specified field */ +#define EFAB_LOW_BIT( field ) EFAB_VAL ( field, LBN ) +/** Bit width of the specified field */ +#define EFAB_WIDTH( field ) EFAB_VAL ( field, WIDTH ) +/** High bit number of the specified field */ +#define EFAB_HIGH_BIT(field) ( EFAB_LOW_BIT(field) + EFAB_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 EFAB_MASK64( field ) \ + ( EFAB_WIDTH(field) == 64 ? ~( ( uint64_t ) 0 ) : \ + ( ( ( ( ( uint64_t ) 1 ) << EFAB_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 32 bits. Use + * EFAB_MASK64 for higher width fields. + */ +#define EFAB_MASK32( field ) \ + ( EFAB_WIDTH(field) == 32 ? ~( ( uint32_t ) 0 ) : \ + ( ( ( ( ( uint32_t ) 1 ) << EFAB_WIDTH(field) ) ) - 1 ) ) + +/** A doubleword (i.e. 4 byte) datatype + * + * This datatype is defined to be little-endian. + */ +typedef union efab_dword { + uint32_t u32[1]; + uint32_t opaque; /* For bitwise operations between two efab_dwords */ +} efab_dword_t; + +/** A quadword (i.e. 8 byte) datatype + * + * This datatype is defined to be little-endian. + */ +typedef union efab_qword { + uint64_t u64[1]; + uint32_t u32[2]; + efab_dword_t dword[2]; +} efab_qword_t; + +/** + * An octword (eight-word, i.e. 16 byte) datatype + * + * This datatype is defined to be little-endian. + */ +typedef union efab_oword { + uint64_t u64[2]; + efab_qword_t qword[2]; + uint32_t u32[4]; + efab_dword_t dword[4]; +} efab_oword_t; + +/** Format string for printing an efab_dword_t */ +#define EFAB_DWORD_FMT "%08x" + +/** Format string for printing an efab_qword_t */ +#define EFAB_QWORD_FMT "%08x:%08x" + +/** Format string for printing an efab_oword_t */ +#define EFAB_OWORD_FMT "%08x:%08x:%08x:%08x" + +/** printk parameters for printing an efab_dword_t */ +#define EFAB_DWORD_VAL(dword) \ + ( ( unsigned int ) le32_to_cpu ( (dword).u32[0] ) ) + +/** printk parameters for printing an efab_qword_t */ +#define EFAB_QWORD_VAL(qword) \ + ( ( unsigned int ) le32_to_cpu ( (qword).u32[1] ) ), \ + ( ( unsigned int ) le32_to_cpu ( (qword).u32[0] ) ) + +/** printk parameters for printing an efab_oword_t */ +#define EFAB_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 EFAB_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 EFAB_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 EFAB_EXTRACT64( element, min, max, low, high ) \ + EFAB_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 EFAB_EXTRACT32( element, min, max, low, high ) \ + EFAB_EXTRACT_NATIVE ( le32_to_cpu(element), min, max, low, high ) + +#define EFAB_EXTRACT_OWORD64( oword, low, high ) \ + ( EFAB_EXTRACT64 ( (oword).u64[0], 0, 63, low, high ) | \ + EFAB_EXTRACT64 ( (oword).u64[1], 64, 127, low, high ) ) + +#define EFAB_EXTRACT_QWORD64( qword, low, high ) \ + ( EFAB_EXTRACT64 ( (qword).u64[0], 0, 63, low, high ) ) + +#define EFAB_EXTRACT_OWORD32( oword, low, high ) \ + ( EFAB_EXTRACT32 ( (oword).u32[0], 0, 31, low, high ) | \ + EFAB_EXTRACT32 ( (oword).u32[1], 32, 63, low, high ) | \ + EFAB_EXTRACT32 ( (oword).u32[2], 64, 95, low, high ) | \ + EFAB_EXTRACT32 ( (oword).u32[3], 96, 127, low, high ) ) + +#define EFAB_EXTRACT_QWORD32( qword, low, high ) \ + ( EFAB_EXTRACT32 ( (qword).u32[0], 0, 31, low, high ) | \ + EFAB_EXTRACT32 ( (qword).u32[1], 32, 63, low, high ) ) + +#define EFAB_EXTRACT_DWORD( dword, low, high ) \ + ( EFAB_EXTRACT32 ( (dword).u32[0], 0, 31, low, high ) ) + +#define EFAB_OWORD_FIELD64( oword, field ) \ + ( EFAB_EXTRACT_OWORD64 ( oword, EFAB_LOW_BIT ( field ), \ + EFAB_HIGH_BIT ( field ) ) & \ + EFAB_MASK64 ( field ) ) + +#define EFAB_QWORD_FIELD64( qword, field ) \ + ( EFAB_EXTRACT_QWORD64 ( qword, EFAB_LOW_BIT ( field ), \ + EFAB_HIGH_BIT ( field ) ) & \ + EFAB_MASK64 ( field ) ) + +#define EFAB_OWORD_FIELD32( oword, field ) \ + ( EFAB_EXTRACT_OWORD32 ( oword, EFAB_LOW_BIT ( field ), \ + EFAB_HIGH_BIT ( field ) ) & \ + EFAB_MASK32 ( field ) ) + +#define EFAB_QWORD_FIELD32( qword, field ) \ + ( EFAB_EXTRACT_QWORD32 ( qword, EFAB_LOW_BIT ( field ), \ + EFAB_HIGH_BIT ( field ) ) & \ + EFAB_MASK32 ( field ) ) + +#define EFAB_DWORD_FIELD( dword, field ) \ + ( EFAB_EXTRACT_DWORD ( dword, EFAB_LOW_BIT ( field ), \ + EFAB_HIGH_BIT ( field ) ) & \ + EFAB_MASK32 ( field ) ) + +#define EFAB_OWORD_IS_ZERO64( oword ) \ + ( ! ( (oword).u64[0] || (oword).u64[1] ) ) + +#define EFAB_QWORD_IS_ZERO64( qword ) \ + ( ! ( (qword).u64[0] ) ) + +#define EFAB_OWORD_IS_ZERO32( oword ) \ + ( ! ( (oword).u32[0] || (oword).u32[1] || \ + (oword).u32[2] || (oword).u32[3] ) ) + +#define EFAB_QWORD_IS_ZERO32( qword ) \ + ( ! ( (qword).u32[0] || (qword).u32[1] ) ) + +#define EFAB_DWORD_IS_ZERO( dword ) \ + ( ! ( (dword).u32[0] ) ) + +#define EFAB_OWORD_IS_ALL_ONES64( oword ) \ + ( ( (oword).u64[0] & (oword).u64[1] ) == ~( ( uint64_t ) 0 ) ) + +#define EFAB_QWORD_IS_ALL_ONES64( qword ) \ + ( (qword).u64[0] == ~( ( uint64_t ) 0 ) ) + +#define EFAB_OWORD_IS_ALL_ONES32( oword ) \ + ( ( (oword).u32[0] & (oword).u32[1] & \ + (oword).u32[2] & (oword).u32[3] ) == ~( ( uint32_t ) 0 ) ) + +#define EFAB_QWORD_IS_ALL_ONES32( qword ) \ + ( ( (qword).u32[0] & (qword).u32[1] ) == ~( ( uint32_t ) 0 ) ) + +#define EFAB_DWORD_IS_ALL_ONES( dword ) \ + ( (dword).u32[0] == ~( ( uint32_t ) 0 ) ) + +#if ( BITS_PER_LONG == 64 ) +#define EFAB_OWORD_FIELD EFAB_OWORD_FIELD64 +#define EFAB_QWORD_FIELD EFAB_QWORD_FIELD64 +#define EFAB_OWORD_IS_ZERO EFAB_OWORD_IS_ZERO64 +#define EFAB_QWORD_IS_ZERO EFAB_QWORD_IS_ZERO64 +#define EFAB_OWORD_IS_ALL_ONES EFAB_OWORD_IS_ALL_ONES64 +#define EFAB_QWORD_IS_ALL_ONES EFAB_QWORD_IS_ALL_ONES64 +#else +#define EFAB_OWORD_FIELD EFAB_OWORD_FIELD32 +#define EFAB_QWORD_FIELD EFAB_QWORD_FIELD32 +#define EFAB_OWORD_IS_ZERO EFAB_OWORD_IS_ZERO32 +#define EFAB_QWORD_IS_ZERO EFAB_QWORD_IS_ZERO32 +#define EFAB_OWORD_IS_ALL_ONES EFAB_OWORD_IS_ALL_ONES32 +#define EFAB_QWORD_IS_ALL_ONES EFAB_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 EFAB_INSERT_NATIVE64( min, max, low, high, value ) \ + ( ( ( low > max ) || ( high < min ) ) ? 0 : \ + ( ( low > min ) ? \ + ( ( ( uint64_t ) (value) ) << ( low - min ) ) : \ + ( ( ( uint64_t ) (value) ) >> ( min - low ) ) ) ) + +#define EFAB_INSERT_NATIVE32( min, max, low, high, value ) \ + ( ( ( low > max ) || ( high < min ) ) ? 0 : \ + ( ( low > min ) ? \ + ( ( ( uint32_t ) (value) ) << ( low - min ) ) : \ + ( ( ( uint32_t ) (value) ) >> ( min - low ) ) ) ) + +#define EFAB_INSERT_NATIVE( min, max, low, high, value ) \ + ( ( ( ( max - min ) >= 32 ) || \ + ( ( high - low ) >= 32 ) ) \ + ? EFAB_INSERT_NATIVE64 ( min, max, low, high, value ) \ + : EFAB_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 EFAB_INSERT_FIELD_NATIVE( min, max, field, value ) \ + EFAB_INSERT_NATIVE ( min, max, EFAB_LOW_BIT ( field ), \ + EFAB_HIGH_BIT ( field ), value ) + +/** + * Construct bit field + * + * Creates the portion of the named bit fields that lie within the + * range [min,max). + */ +#define EFAB_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 ) \ + ( EFAB_INSERT_FIELD_NATIVE ( min, max, field1, value1 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field2, value2 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field3, value3 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field4, value4 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field5, value5 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field6, value6 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field7, value7 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field8, value8 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field9, value9 ) | \ + EFAB_INSERT_FIELD_NATIVE ( min, max, field10, value10 ) ) + +#define EFAB_INSERT_FIELDS64( ... ) \ + cpu_to_le64 ( EFAB_INSERT_FIELDS_NATIVE ( __VA_ARGS__ ) ) + +#define EFAB_INSERT_FIELDS32( ... ) \ + cpu_to_le32 ( EFAB_INSERT_FIELDS_NATIVE ( __VA_ARGS__ ) ) + +#define EFAB_POPULATE_OWORD64( oword, ... ) do { \ + (oword).u64[0] = EFAB_INSERT_FIELDS64 ( 0, 63, __VA_ARGS__ );\ + (oword).u64[1] = EFAB_INSERT_FIELDS64 ( 64, 127, __VA_ARGS__ );\ + } while ( 0 ) + +#define EFAB_POPULATE_QWORD64( qword, ... ) do { \ + (qword).u64[0] = EFAB_INSERT_FIELDS64 ( 0, 63, __VA_ARGS__ );\ + } while ( 0 ) + +#define EFAB_POPULATE_OWORD32( oword, ... ) do { \ + (oword).u32[0] = EFAB_INSERT_FIELDS32 ( 0, 31, __VA_ARGS__ );\ + (oword).u32[1] = EFAB_INSERT_FIELDS32 ( 32, 63, __VA_ARGS__ );\ + (oword).u32[2] = EFAB_INSERT_FIELDS32 ( 64, 95, __VA_ARGS__ );\ + (oword).u32[3] = EFAB_INSERT_FIELDS32 ( 96, 127, __VA_ARGS__ );\ + } while ( 0 ) + +#define EFAB_POPULATE_QWORD32( qword, ... ) do { \ + (qword).u32[0] = EFAB_INSERT_FIELDS32 ( 0, 31, __VA_ARGS__ );\ + (qword).u32[1] = EFAB_INSERT_FIELDS32 ( 32, 63, __VA_ARGS__ );\ + } while ( 0 ) + +#define EFAB_POPULATE_DWORD( dword, ... ) do { \ + (dword).u32[0] = EFAB_INSERT_FIELDS32 ( 0, 31, __VA_ARGS__ );\ + } while ( 0 ) + +#if ( BITS_PER_LONG == 64 ) +#define EFAB_POPULATE_OWORD EFAB_POPULATE_OWORD64 +#define EFAB_POPULATE_QWORD EFAB_POPULATE_QWORD64 +#else +#define EFAB_POPULATE_OWORD EFAB_POPULATE_OWORD32 +#define EFAB_POPULATE_QWORD EFAB_POPULATE_QWORD32 +#endif + +/* Populate an octword field with various numbers of arguments */ +#define EFAB_POPULATE_OWORD_10 EFAB_POPULATE_OWORD +#define EFAB_POPULATE_OWORD_9( oword, ... ) \ + EFAB_POPULATE_OWORD_10 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_8( oword, ... ) \ + EFAB_POPULATE_OWORD_9 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_7( oword, ... ) \ + EFAB_POPULATE_OWORD_8 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_6( oword, ... ) \ + EFAB_POPULATE_OWORD_7 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_5( oword, ... ) \ + EFAB_POPULATE_OWORD_6 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_4( oword, ... ) \ + EFAB_POPULATE_OWORD_5 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_3( oword, ... ) \ + EFAB_POPULATE_OWORD_4 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_2( oword, ... ) \ + EFAB_POPULATE_OWORD_3 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_OWORD_1( oword, ... ) \ + EFAB_POPULATE_OWORD_2 ( oword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_ZERO_OWORD( oword ) \ + EFAB_POPULATE_OWORD_1 ( oword, EFAB_DUMMY_FIELD, 0 ) +#define EFAB_SET_OWORD( oword ) \ + EFAB_POPULATE_OWORD_4 ( oword, \ + EFAB_DWORD_0, 0xffffffff, \ + EFAB_DWORD_1, 0xffffffff, \ + EFAB_DWORD_2, 0xffffffff, \ + EFAB_DWORD_3, 0xffffffff ) + +/* Populate a quadword field with various numbers of arguments */ +#define EFAB_POPULATE_QWORD_10 EFAB_POPULATE_QWORD +#define EFAB_POPULATE_QWORD_9( qword, ... ) \ + EFAB_POPULATE_QWORD_10 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_8( qword, ... ) \ + EFAB_POPULATE_QWORD_9 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_7( qword, ... ) \ + EFAB_POPULATE_QWORD_8 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_6( qword, ... ) \ + EFAB_POPULATE_QWORD_7 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_5( qword, ... ) \ + EFAB_POPULATE_QWORD_6 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_4( qword, ... ) \ + EFAB_POPULATE_QWORD_5 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_3( qword, ... ) \ + EFAB_POPULATE_QWORD_4 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_2( qword, ... ) \ + EFAB_POPULATE_QWORD_3 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_QWORD_1( qword, ... ) \ + EFAB_POPULATE_QWORD_2 ( qword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_ZERO_QWORD( qword ) \ + EFAB_POPULATE_QWORD_1 ( qword, EFAB_DUMMY_FIELD, 0 ) +#define EFAB_SET_QWORD( qword ) \ + EFAB_POPULATE_QWORD_2 ( qword, \ + EFAB_DWORD_0, 0xffffffff, \ + EFAB_DWORD_1, 0xffffffff ) + +/* Populate a dword field with various numbers of arguments */ +#define EFAB_POPULATE_DWORD_10 EFAB_POPULATE_DWORD +#define EFAB_POPULATE_DWORD_9( dword, ... ) \ + EFAB_POPULATE_DWORD_10 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_8( dword, ... ) \ + EFAB_POPULATE_DWORD_9 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_7( dword, ... ) \ + EFAB_POPULATE_DWORD_8 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_6( dword, ... ) \ + EFAB_POPULATE_DWORD_7 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_5( dword, ... ) \ + EFAB_POPULATE_DWORD_6 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_4( dword, ... ) \ + EFAB_POPULATE_DWORD_5 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_3( dword, ... ) \ + EFAB_POPULATE_DWORD_4 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_2( dword, ... ) \ + EFAB_POPULATE_DWORD_3 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_POPULATE_DWORD_1( dword, ... ) \ + EFAB_POPULATE_DWORD_2 ( dword, EFAB_DUMMY_FIELD, 0, __VA_ARGS__ ) +#define EFAB_ZERO_DWORD( dword ) \ + EFAB_POPULATE_DWORD_1 ( dword, EFAB_DUMMY_FIELD, 0 ) +#define EFAB_SET_DWORD( dword ) \ + EFAB_POPULATE_DWORD_1 ( dword, EFAB_DWORD_0, 0xffffffff ) + +/* + * Modify a named field within an already-populated structure. Used + * for read-modify-write operations. + * + */ + +#define EFAB_INSERT_FIELD64( ... ) \ + cpu_to_le64 ( EFAB_INSERT_FIELD_NATIVE ( __VA_ARGS__ ) ) + +#define EFAB_INSERT_FIELD32( ... ) \ + cpu_to_le32 ( EFAB_INSERT_FIELD_NATIVE ( __VA_ARGS__ ) ) + +#define EFAB_INPLACE_MASK64( min, max, field ) \ + EFAB_INSERT_FIELD64 ( min, max, field, EFAB_MASK64 ( field ) ) + +#define EFAB_INPLACE_MASK32( min, max, field ) \ + EFAB_INSERT_FIELD32 ( min, max, field, EFAB_MASK32 ( field ) ) + +#define EFAB_SET_OWORD_FIELD64( oword, field, value ) do { \ + (oword).u64[0] = ( ( (oword).u64[0] \ + & ~EFAB_INPLACE_MASK64 ( 0, 63, field ) ) \ + | EFAB_INSERT_FIELD64 ( 0, 63, field, value ) ); \ + (oword).u64[1] = ( ( (oword).u64[1] \ + & ~EFAB_INPLACE_MASK64 ( 64, 127, field ) ) \ + | EFAB_INSERT_FIELD64 ( 64, 127, field, value ) ); \ + } while ( 0 ) + +#define EFAB_SET_QWORD_FIELD64( qword, field, value ) do { \ + (qword).u64[0] = ( ( (qword).u64[0] \ + & ~EFAB_INPLACE_MASK64 ( 0, 63, field ) ) \ + | EFAB_INSERT_FIELD64 ( 0, 63, field, value ) ); \ + } while ( 0 ) + +#define EFAB_SET_OWORD_FIELD32( oword, field, value ) do { \ + (oword).u32[0] = ( ( (oword).u32[0] \ + & ~EFAB_INPLACE_MASK32 ( 0, 31, field ) ) \ + | EFAB_INSERT_FIELD32 ( 0, 31, field, value ) ); \ + (oword).u32[1] = ( ( (oword).u32[1] \ + & ~EFAB_INPLACE_MASK32 ( 32, 63, field ) ) \ + | EFAB_INSERT_FIELD32 ( 32, 63, field, value ) ); \ + (oword).u32[2] = ( ( (oword).u32[2] \ + & ~EFAB_INPLACE_MASK32 ( 64, 95, field ) ) \ + | EFAB_INSERT_FIELD32 ( 64, 95, field, value ) ); \ + (oword).u32[3] = ( ( (oword).u32[3] \ + & ~EFAB_INPLACE_MASK32 ( 96, 127, field ) ) \ + | EFAB_INSERT_FIELD32 ( 96, 127, field, value ) ); \ + } while ( 0 ) + +#define EFAB_SET_QWORD_FIELD32( qword, field, value ) do { \ + (qword).u32[0] = ( ( (qword).u32[0] \ + & ~EFAB_INPLACE_MASK32 ( 0, 31, field ) ) \ + | EFAB_INSERT_FIELD32 ( 0, 31, field, value ) ); \ + (qword).u32[1] = ( ( (qword).u32[1] \ + & ~EFAB_INPLACE_MASK32 ( 32, 63, field ) ) \ + | EFAB_INSERT_FIELD32 ( 32, 63, field, value ) ); \ + } while ( 0 ) + +#define EFAB_SET_DWORD_FIELD( dword, field, value ) do { \ + (dword).u32[0] = ( ( (dword).u32[0] \ + & ~EFAB_INPLACE_MASK32 ( 0, 31, field ) ) \ + | EFAB_INSERT_FIELD32 ( 0, 31, field, value ) ); \ + } while ( 0 ) + +#if ( BITS_PER_LONG == 64 ) +#define EFAB_SET_OWORD_FIELD EFAB_SET_OWORD_FIELD64 +#define EFAB_SET_QWORD_FIELD EFAB_SET_QWORD_FIELD64 +#else +#define EFAB_SET_OWORD_FIELD EFAB_SET_OWORD_FIELD32 +#define EFAB_SET_QWORD_FIELD EFAB_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 EFAB_DMA_TYPE_WIDTH( width ) \ + ( ( (width) < DMA_ADDR_T_WIDTH ) ? (width) : DMA_ADDR_T_WIDTH ) +#define EFAB_DMA_MAX_MASK ( ( DMA_ADDR_T_WIDTH == 64 ) ? \ + ~( ( uint64_t ) 0 ) : ~( ( uint32_t ) 0 ) ) +#define EFAB_DMA_MASK(mask) ( (mask) & EFAB_DMA_MAX_MASK ) + +#endif /* EFAB_BITFIELD_H */ + +/* + * Local variables: + * c-basic-offset: 8 + * c-indent-level: 8 + * tab-width: 8 + * End: + */ |