diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/falcon/bitfield.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/falcon/bitfield.h | 542 |
1 files changed, 542 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/falcon/bitfield.h b/drivers/net/ethernet/sfc/falcon/bitfield.h new file mode 100644 index 000000000..230fd77bd --- /dev/null +++ b/drivers/net/ethernet/sfc/falcon/bitfield.h @@ -0,0 +1,542 @@ +/**************************************************************************** + * Driver for Solarflare network controllers and boards + * Copyright 2005-2006 Fen Systems Ltd. + * Copyright 2006-2013 Solarflare Communications Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation, incorporated herein by reference. + */ + +#ifndef EF4_BITFIELD_H +#define EF4_BITFIELD_H + +/* + * Efx bitfield access + * + * Efx NICs make extensive use of bitfields up to 128 bits + * wide. Since there is no native 128-bit datatype on most systems, + * and since 64-bit datatypes are inefficient on 32-bit systems and + * vice versa, we wrap accesses in a way that uses the most efficient + * datatype. + * + * The NICs are PCI devices and therefore little-endian. Since most + * of the quantities that we deal with are DMAed to/from host memory, + * we define our datatypes (ef4_oword_t, ef4_qword_t and + * ef4_dword_t) to be little-endian. + */ + +/* Lowest bit numbers and widths */ +#define EF4_DUMMY_FIELD_LBN 0 +#define EF4_DUMMY_FIELD_WIDTH 0 +#define EF4_WORD_0_LBN 0 +#define EF4_WORD_0_WIDTH 16 +#define EF4_WORD_1_LBN 16 +#define EF4_WORD_1_WIDTH 16 +#define EF4_DWORD_0_LBN 0 +#define EF4_DWORD_0_WIDTH 32 +#define EF4_DWORD_1_LBN 32 +#define EF4_DWORD_1_WIDTH 32 +#define EF4_DWORD_2_LBN 64 +#define EF4_DWORD_2_WIDTH 32 +#define EF4_DWORD_3_LBN 96 +#define EF4_DWORD_3_WIDTH 32 +#define EF4_QWORD_0_LBN 0 +#define EF4_QWORD_0_WIDTH 64 + +/* Specified attribute (e.g. LBN) of the specified field */ +#define EF4_VAL(field, attribute) field ## _ ## attribute +/* Low bit number of the specified field */ +#define EF4_LOW_BIT(field) EF4_VAL(field, LBN) +/* Bit width of the specified field */ +#define EF4_WIDTH(field) EF4_VAL(field, WIDTH) +/* High bit number of the specified field */ +#define EF4_HIGH_BIT(field) (EF4_LOW_BIT(field) + EF4_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 EF4_MASK64(width) \ + ((width) == 64 ? ~((u64) 0) : \ + (((((u64) 1) << (width))) - 1)) + +/* Mask equal in width to the specified field. + * + * For example, a field with width 5 would have a mask of 0x1f. + * + * The maximum width mask that can be generated is 32 bits. Use + * EF4_MASK64 for higher width fields. + */ +#define EF4_MASK32(width) \ + ((width) == 32 ? ~((u32) 0) : \ + (((((u32) 1) << (width))) - 1)) + +/* A doubleword (i.e. 4 byte) datatype - little-endian in HW */ +typedef union ef4_dword { + __le32 u32[1]; +} ef4_dword_t; + +/* A quadword (i.e. 8 byte) datatype - little-endian in HW */ +typedef union ef4_qword { + __le64 u64[1]; + __le32 u32[2]; + ef4_dword_t dword[2]; +} ef4_qword_t; + +/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */ +typedef union ef4_oword { + __le64 u64[2]; + ef4_qword_t qword[2]; + __le32 u32[4]; + ef4_dword_t dword[4]; +} ef4_oword_t; + +/* Format string and value expanders for printk */ +#define EF4_DWORD_FMT "%08x" +#define EF4_QWORD_FMT "%08x:%08x" +#define EF4_OWORD_FMT "%08x:%08x:%08x:%08x" +#define EF4_DWORD_VAL(dword) \ + ((unsigned int) le32_to_cpu((dword).u32[0])) +#define EF4_QWORD_VAL(qword) \ + ((unsigned int) le32_to_cpu((qword).u32[1])), \ + ((unsigned int) le32_to_cpu((qword).u32[0])) +#define EF4_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 EF4_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 EF4_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 EF4_EXTRACT64(element, min, max, low, high) \ + EF4_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 EF4_EXTRACT32(element, min, max, low, high) \ + EF4_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high) + +#define EF4_EXTRACT_OWORD64(oword, low, high) \ + ((EF4_EXTRACT64((oword).u64[0], 0, 63, low, high) | \ + EF4_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \ + EF4_MASK64((high) + 1 - (low))) + +#define EF4_EXTRACT_QWORD64(qword, low, high) \ + (EF4_EXTRACT64((qword).u64[0], 0, 63, low, high) & \ + EF4_MASK64((high) + 1 - (low))) + +#define EF4_EXTRACT_OWORD32(oword, low, high) \ + ((EF4_EXTRACT32((oword).u32[0], 0, 31, low, high) | \ + EF4_EXTRACT32((oword).u32[1], 32, 63, low, high) | \ + EF4_EXTRACT32((oword).u32[2], 64, 95, low, high) | \ + EF4_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \ + EF4_MASK32((high) + 1 - (low))) + +#define EF4_EXTRACT_QWORD32(qword, low, high) \ + ((EF4_EXTRACT32((qword).u32[0], 0, 31, low, high) | \ + EF4_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \ + EF4_MASK32((high) + 1 - (low))) + +#define EF4_EXTRACT_DWORD(dword, low, high) \ + (EF4_EXTRACT32((dword).u32[0], 0, 31, low, high) & \ + EF4_MASK32((high) + 1 - (low))) + +#define EF4_OWORD_FIELD64(oword, field) \ + EF4_EXTRACT_OWORD64(oword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field)) + +#define EF4_QWORD_FIELD64(qword, field) \ + EF4_EXTRACT_QWORD64(qword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field)) + +#define EF4_OWORD_FIELD32(oword, field) \ + EF4_EXTRACT_OWORD32(oword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field)) + +#define EF4_QWORD_FIELD32(qword, field) \ + EF4_EXTRACT_QWORD32(qword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field)) + +#define EF4_DWORD_FIELD(dword, field) \ + EF4_EXTRACT_DWORD(dword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field)) + +#define EF4_OWORD_IS_ZERO64(oword) \ + (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0) + +#define EF4_QWORD_IS_ZERO64(qword) \ + (((qword).u64[0]) == (__force __le64) 0) + +#define EF4_OWORD_IS_ZERO32(oword) \ + (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \ + == (__force __le32) 0) + +#define EF4_QWORD_IS_ZERO32(qword) \ + (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0) + +#define EF4_DWORD_IS_ZERO(dword) \ + (((dword).u32[0]) == (__force __le32) 0) + +#define EF4_OWORD_IS_ALL_ONES64(oword) \ + (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0)) + +#define EF4_QWORD_IS_ALL_ONES64(qword) \ + ((qword).u64[0] == ~((__force __le64) 0)) + +#define EF4_OWORD_IS_ALL_ONES32(oword) \ + (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \ + == ~((__force __le32) 0)) + +#define EF4_QWORD_IS_ALL_ONES32(qword) \ + (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0)) + +#define EF4_DWORD_IS_ALL_ONES(dword) \ + ((dword).u32[0] == ~((__force __le32) 0)) + +#if BITS_PER_LONG == 64 +#define EF4_OWORD_FIELD EF4_OWORD_FIELD64 +#define EF4_QWORD_FIELD EF4_QWORD_FIELD64 +#define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO64 +#define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO64 +#define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES64 +#define EF4_QWORD_IS_ALL_ONES EF4_QWORD_IS_ALL_ONES64 +#else +#define EF4_OWORD_FIELD EF4_OWORD_FIELD32 +#define EF4_QWORD_FIELD EF4_QWORD_FIELD32 +#define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO32 +#define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO32 +#define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES32 +#define EF4_QWORD_IS_ALL_ONES EF4_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 EF4_INSERT_NATIVE64(min, max, low, high, value) \ + (((low > max) || (high < min)) ? 0 : \ + ((low > min) ? \ + (((u64) (value)) << (low - min)) : \ + (((u64) (value)) >> (min - low)))) + +#define EF4_INSERT_NATIVE32(min, max, low, high, value) \ + (((low > max) || (high < min)) ? 0 : \ + ((low > min) ? \ + (((u32) (value)) << (low - min)) : \ + (((u32) (value)) >> (min - low)))) + +#define EF4_INSERT_NATIVE(min, max, low, high, value) \ + ((((max - min) >= 32) || ((high - low) >= 32)) ? \ + EF4_INSERT_NATIVE64(min, max, low, high, value) : \ + EF4_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 EF4_INSERT_FIELD_NATIVE(min, max, field, value) \ + EF4_INSERT_NATIVE(min, max, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field), value) + +/* + * Construct bit field + * + * Creates the portion of the named bit fields that lie within the + * range [min,max). + */ +#define EF4_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) \ + (EF4_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \ + EF4_INSERT_FIELD_NATIVE((min), (max), field10, (value10))) + +#define EF4_INSERT_FIELDS64(...) \ + cpu_to_le64(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__)) + +#define EF4_INSERT_FIELDS32(...) \ + cpu_to_le32(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__)) + +#define EF4_POPULATE_OWORD64(oword, ...) do { \ + (oword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ + (oword).u64[1] = EF4_INSERT_FIELDS64(64, 127, __VA_ARGS__); \ + } while (0) + +#define EF4_POPULATE_QWORD64(qword, ...) do { \ + (qword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ + } while (0) + +#define EF4_POPULATE_OWORD32(oword, ...) do { \ + (oword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ + (oword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ + (oword).u32[2] = EF4_INSERT_FIELDS32(64, 95, __VA_ARGS__); \ + (oword).u32[3] = EF4_INSERT_FIELDS32(96, 127, __VA_ARGS__); \ + } while (0) + +#define EF4_POPULATE_QWORD32(qword, ...) do { \ + (qword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ + (qword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ + } while (0) + +#define EF4_POPULATE_DWORD(dword, ...) do { \ + (dword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ + } while (0) + +#if BITS_PER_LONG == 64 +#define EF4_POPULATE_OWORD EF4_POPULATE_OWORD64 +#define EF4_POPULATE_QWORD EF4_POPULATE_QWORD64 +#else +#define EF4_POPULATE_OWORD EF4_POPULATE_OWORD32 +#define EF4_POPULATE_QWORD EF4_POPULATE_QWORD32 +#endif + +/* Populate an octword field with various numbers of arguments */ +#define EF4_POPULATE_OWORD_10 EF4_POPULATE_OWORD +#define EF4_POPULATE_OWORD_9(oword, ...) \ + EF4_POPULATE_OWORD_10(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_8(oword, ...) \ + EF4_POPULATE_OWORD_9(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_7(oword, ...) \ + EF4_POPULATE_OWORD_8(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_6(oword, ...) \ + EF4_POPULATE_OWORD_7(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_5(oword, ...) \ + EF4_POPULATE_OWORD_6(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_4(oword, ...) \ + EF4_POPULATE_OWORD_5(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_3(oword, ...) \ + EF4_POPULATE_OWORD_4(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_2(oword, ...) \ + EF4_POPULATE_OWORD_3(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_OWORD_1(oword, ...) \ + EF4_POPULATE_OWORD_2(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_ZERO_OWORD(oword) \ + EF4_POPULATE_OWORD_1(oword, EF4_DUMMY_FIELD, 0) +#define EF4_SET_OWORD(oword) \ + EF4_POPULATE_OWORD_4(oword, \ + EF4_DWORD_0, 0xffffffff, \ + EF4_DWORD_1, 0xffffffff, \ + EF4_DWORD_2, 0xffffffff, \ + EF4_DWORD_3, 0xffffffff) + +/* Populate a quadword field with various numbers of arguments */ +#define EF4_POPULATE_QWORD_10 EF4_POPULATE_QWORD +#define EF4_POPULATE_QWORD_9(qword, ...) \ + EF4_POPULATE_QWORD_10(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_8(qword, ...) \ + EF4_POPULATE_QWORD_9(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_7(qword, ...) \ + EF4_POPULATE_QWORD_8(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_6(qword, ...) \ + EF4_POPULATE_QWORD_7(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_5(qword, ...) \ + EF4_POPULATE_QWORD_6(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_4(qword, ...) \ + EF4_POPULATE_QWORD_5(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_3(qword, ...) \ + EF4_POPULATE_QWORD_4(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_2(qword, ...) \ + EF4_POPULATE_QWORD_3(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_QWORD_1(qword, ...) \ + EF4_POPULATE_QWORD_2(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_ZERO_QWORD(qword) \ + EF4_POPULATE_QWORD_1(qword, EF4_DUMMY_FIELD, 0) +#define EF4_SET_QWORD(qword) \ + EF4_POPULATE_QWORD_2(qword, \ + EF4_DWORD_0, 0xffffffff, \ + EF4_DWORD_1, 0xffffffff) + +/* Populate a dword field with various numbers of arguments */ +#define EF4_POPULATE_DWORD_10 EF4_POPULATE_DWORD +#define EF4_POPULATE_DWORD_9(dword, ...) \ + EF4_POPULATE_DWORD_10(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_8(dword, ...) \ + EF4_POPULATE_DWORD_9(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_7(dword, ...) \ + EF4_POPULATE_DWORD_8(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_6(dword, ...) \ + EF4_POPULATE_DWORD_7(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_5(dword, ...) \ + EF4_POPULATE_DWORD_6(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_4(dword, ...) \ + EF4_POPULATE_DWORD_5(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_3(dword, ...) \ + EF4_POPULATE_DWORD_4(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_2(dword, ...) \ + EF4_POPULATE_DWORD_3(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_POPULATE_DWORD_1(dword, ...) \ + EF4_POPULATE_DWORD_2(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) +#define EF4_ZERO_DWORD(dword) \ + EF4_POPULATE_DWORD_1(dword, EF4_DUMMY_FIELD, 0) +#define EF4_SET_DWORD(dword) \ + EF4_POPULATE_DWORD_1(dword, EF4_DWORD_0, 0xffffffff) + +/* + * Modify a named field within an already-populated structure. Used + * for read-modify-write operations. + * + */ +#define EF4_INVERT_OWORD(oword) do { \ + (oword).u64[0] = ~((oword).u64[0]); \ + (oword).u64[1] = ~((oword).u64[1]); \ + } while (0) + +#define EF4_AND_OWORD(oword, from, mask) \ + do { \ + (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \ + (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \ + } while (0) + +#define EF4_OR_OWORD(oword, from, mask) \ + do { \ + (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \ + (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \ + } while (0) + +#define EF4_INSERT64(min, max, low, high, value) \ + cpu_to_le64(EF4_INSERT_NATIVE(min, max, low, high, value)) + +#define EF4_INSERT32(min, max, low, high, value) \ + cpu_to_le32(EF4_INSERT_NATIVE(min, max, low, high, value)) + +#define EF4_INPLACE_MASK64(min, max, low, high) \ + EF4_INSERT64(min, max, low, high, EF4_MASK64((high) + 1 - (low))) + +#define EF4_INPLACE_MASK32(min, max, low, high) \ + EF4_INSERT32(min, max, low, high, EF4_MASK32((high) + 1 - (low))) + +#define EF4_SET_OWORD64(oword, low, high, value) do { \ + (oword).u64[0] = (((oword).u64[0] \ + & ~EF4_INPLACE_MASK64(0, 63, low, high)) \ + | EF4_INSERT64(0, 63, low, high, value)); \ + (oword).u64[1] = (((oword).u64[1] \ + & ~EF4_INPLACE_MASK64(64, 127, low, high)) \ + | EF4_INSERT64(64, 127, low, high, value)); \ + } while (0) + +#define EF4_SET_QWORD64(qword, low, high, value) do { \ + (qword).u64[0] = (((qword).u64[0] \ + & ~EF4_INPLACE_MASK64(0, 63, low, high)) \ + | EF4_INSERT64(0, 63, low, high, value)); \ + } while (0) + +#define EF4_SET_OWORD32(oword, low, high, value) do { \ + (oword).u32[0] = (((oword).u32[0] \ + & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ + | EF4_INSERT32(0, 31, low, high, value)); \ + (oword).u32[1] = (((oword).u32[1] \ + & ~EF4_INPLACE_MASK32(32, 63, low, high)) \ + | EF4_INSERT32(32, 63, low, high, value)); \ + (oword).u32[2] = (((oword).u32[2] \ + & ~EF4_INPLACE_MASK32(64, 95, low, high)) \ + | EF4_INSERT32(64, 95, low, high, value)); \ + (oword).u32[3] = (((oword).u32[3] \ + & ~EF4_INPLACE_MASK32(96, 127, low, high)) \ + | EF4_INSERT32(96, 127, low, high, value)); \ + } while (0) + +#define EF4_SET_QWORD32(qword, low, high, value) do { \ + (qword).u32[0] = (((qword).u32[0] \ + & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ + | EF4_INSERT32(0, 31, low, high, value)); \ + (qword).u32[1] = (((qword).u32[1] \ + & ~EF4_INPLACE_MASK32(32, 63, low, high)) \ + | EF4_INSERT32(32, 63, low, high, value)); \ + } while (0) + +#define EF4_SET_DWORD32(dword, low, high, value) do { \ + (dword).u32[0] = (((dword).u32[0] \ + & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ + | EF4_INSERT32(0, 31, low, high, value)); \ + } while (0) + +#define EF4_SET_OWORD_FIELD64(oword, field, value) \ + EF4_SET_OWORD64(oword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field), value) + +#define EF4_SET_QWORD_FIELD64(qword, field, value) \ + EF4_SET_QWORD64(qword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field), value) + +#define EF4_SET_OWORD_FIELD32(oword, field, value) \ + EF4_SET_OWORD32(oword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field), value) + +#define EF4_SET_QWORD_FIELD32(qword, field, value) \ + EF4_SET_QWORD32(qword, EF4_LOW_BIT(field), \ + EF4_HIGH_BIT(field), value) + +#define EF4_SET_DWORD_FIELD(dword, field, value) \ + 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 */ |