LXR linux/drivers/net/ethernet/sfc/bitfield.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/****************************************************************************
   3 * Driver for Solarflare network controllers and boards
   4 * Copyright 2005-2006 Fen Systems Ltd.
   5 * Copyright 2006-2013 Solarflare Communications Inc.
   6 */
   7
   8#ifndef EFX_BITFIELD_H
   9#define EFX_BITFIELD_H
  10
  11/*
  12 * Efx bitfield access
  13 *
  14 * Efx NICs make extensive use of bitfields up to 128 bits
  15 * wide.  Since there is no native 128-bit datatype on most systems,
  16 * and since 64-bit datatypes are inefficient on 32-bit systems and
  17 * vice versa, we wrap accesses in a way that uses the most efficient
  18 * datatype.
  19 *
  20 * The NICs are PCI devices and therefore little-endian.  Since most
  21 * of the quantities that we deal with are DMAed to/from host memory,
  22 * we define our datatypes (efx_oword_t, efx_qword_t and
  23 * efx_dword_t) to be little-endian.
  24 */
  25
  26/* Lowest bit numbers and widths */
  27#define EFX_DUMMY_FIELD_LBN 0
  28#define EFX_DUMMY_FIELD_WIDTH 0
  29#define EFX_WORD_0_LBN 0
  30#define EFX_WORD_0_WIDTH 16
  31#define EFX_WORD_1_LBN 16
  32#define EFX_WORD_1_WIDTH 16
  33#define EFX_DWORD_0_LBN 0
  34#define EFX_DWORD_0_WIDTH 32
  35#define EFX_DWORD_1_LBN 32
  36#define EFX_DWORD_1_WIDTH 32
  37#define EFX_DWORD_2_LBN 64
  38#define EFX_DWORD_2_WIDTH 32
  39#define EFX_DWORD_3_LBN 96
  40#define EFX_DWORD_3_WIDTH 32
  41#define EFX_QWORD_0_LBN 0
  42#define EFX_QWORD_0_WIDTH 64
  43
  44/* Specified attribute (e.g. LBN) of the specified field */
  45#define EFX_VAL(field, attribute) field ## _ ## attribute
  46/* Low bit number of the specified field */
  47#define EFX_LOW_BIT(field) EFX_VAL(field, LBN)
  48/* Bit width of the specified field */
  49#define EFX_WIDTH(field) EFX_VAL(field, WIDTH)
  50/* High bit number of the specified field */
  51#define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1)
  52/* Mask equal in width to the specified field.
  53 *
  54 * For example, a field with width 5 would have a mask of 0x1f.
  55 *
  56 * The maximum width mask that can be generated is 64 bits.
  57 */
  58#define EFX_MASK64(width)                       \
  59        ((width) == 64 ? ~((u64) 0) :           \
  60         (((((u64) 1) << (width))) - 1))
  61
  62/* Mask equal in width to the specified field.
  63 *
  64 * For example, a field with width 5 would have a mask of 0x1f.
  65 *
  66 * The maximum width mask that can be generated is 32 bits.  Use
  67 * EFX_MASK64 for higher width fields.
  68 */
  69#define EFX_MASK32(width)                       \
  70        ((width) == 32 ? ~((u32) 0) :           \
  71         (((((u32) 1) << (width))) - 1))
  72
  73/* A doubleword (i.e. 4 byte) datatype - little-endian in HW */
  74typedef union efx_dword {
  75        __le32 u32[1];
  76} efx_dword_t;
  77
  78/* A quadword (i.e. 8 byte) datatype - little-endian in HW */
  79typedef union efx_qword {
  80        __le64 u64[1];
  81        __le32 u32[2];
  82        efx_dword_t dword[2];
  83} efx_qword_t;
  84
  85/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
  86typedef union efx_oword {
  87        __le64 u64[2];
  88        efx_qword_t qword[2];
  89        __le32 u32[4];
  90        efx_dword_t dword[4];
  91} efx_oword_t;
  92
  93/* Format string and value expanders for printk */
  94#define EFX_DWORD_FMT "%08x"
  95#define EFX_QWORD_FMT "%08x:%08x"
  96#define EFX_OWORD_FMT "%08x:%08x:%08x:%08x"
  97#define EFX_DWORD_VAL(dword)                            \
  98        ((unsigned int) le32_to_cpu((dword).u32[0]))
  99#define EFX_QWORD_VAL(qword)                            \
 100        ((unsigned int) le32_to_cpu((qword).u32[1])),   \
 101        ((unsigned int) le32_to_cpu((qword).u32[0]))
 102#define EFX_OWORD_VAL(oword)                            \
 103        ((unsigned int) le32_to_cpu((oword).u32[3])),   \
 104        ((unsigned int) le32_to_cpu((oword).u32[2])),   \
 105        ((unsigned int) le32_to_cpu((oword).u32[1])),   \
 106        ((unsigned int) le32_to_cpu((oword).u32[0]))
 107
 108/*
 109 * Extract bit field portion [low,high) from the native-endian element
 110 * which contains bits [min,max).
 111 *
 112 * For example, suppose "element" represents the high 32 bits of a
 113 * 64-bit value, and we wish to extract the bits belonging to the bit
 114 * field occupying bits 28-45 of this 64-bit value.
 115 *
 116 * Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give
 117 *
 118 *   ( element ) << 4
 119 *
 120 * The result will contain the relevant bits filled in in the range
 121 * [0,high-low), with garbage in bits [high-low+1,...).
 122 */
 123#define EFX_EXTRACT_NATIVE(native_element, min, max, low, high)         \
 124        ((low) > (max) || (high) < (min) ? 0 :                          \
 125         (low) > (min) ?                                                \
 126         (native_element) >> ((low) - (min)) :                          \
 127         (native_element) << ((min) - (low)))
 128
 129/*
 130 * Extract bit field portion [low,high) from the 64-bit little-endian
 131 * element which contains bits [min,max)
 132 */
 133#define EFX_EXTRACT64(element, min, max, low, high)                     \
 134        EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
 135
 136/*
 137 * Extract bit field portion [low,high) from the 32-bit little-endian
 138 * element which contains bits [min,max)
 139 */
 140#define EFX_EXTRACT32(element, min, max, low, high)                     \
 141        EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
 142
 143#define EFX_EXTRACT_OWORD64(oword, low, high)                           \
 144        ((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) |             \
 145          EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) &          \
 146         EFX_MASK64((high) + 1 - (low)))
 147
 148#define EFX_EXTRACT_QWORD64(qword, low, high)                           \
 149        (EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) &              \
 150         EFX_MASK64((high) + 1 - (low)))
 151
 152#define EFX_EXTRACT_OWORD32(oword, low, high)                           \
 153        ((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) |             \
 154          EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) |            \
 155          EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) |            \
 156          EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) &          \
 157         EFX_MASK32((high) + 1 - (low)))
 158
 159#define EFX_EXTRACT_QWORD32(qword, low, high)                           \
 160        ((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) |             \
 161          EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) &           \
 162         EFX_MASK32((high) + 1 - (low)))
 163
 164#define EFX_EXTRACT_DWORD(dword, low, high)                     \
 165        (EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) &      \
 166         EFX_MASK32((high) + 1 - (low)))
 167
 168#define EFX_OWORD_FIELD64(oword, field)                         \
 169        EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field),          \
 170                            EFX_HIGH_BIT(field))
 171
 172#define EFX_QWORD_FIELD64(qword, field)                         \
 173        EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field),          \
 174                            EFX_HIGH_BIT(field))
 175
 176#define EFX_OWORD_FIELD32(oword, field)                         \
 177        EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field),          \
 178                            EFX_HIGH_BIT(field))
 179
 180#define EFX_QWORD_FIELD32(qword, field)                         \
 181        EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field),          \
 182                            EFX_HIGH_BIT(field))
 183
 184#define EFX_DWORD_FIELD(dword, field)                           \
 185        EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field),            \
 186                          EFX_HIGH_BIT(field))
 187
 188#define EFX_OWORD_IS_ZERO64(oword)                                      \
 189        (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0)
 190
 191#define EFX_QWORD_IS_ZERO64(qword)                                      \
 192        (((qword).u64[0]) == (__force __le64) 0)
 193
 194#define EFX_OWORD_IS_ZERO32(oword)                                           \
 195        (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
 196         == (__force __le32) 0)
 197
 198#define EFX_QWORD_IS_ZERO32(qword)                                      \
 199        (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0)
 200
 201#define EFX_DWORD_IS_ZERO(dword)                                        \
 202        (((dword).u32[0]) == (__force __le32) 0)
 203
 204#define EFX_OWORD_IS_ALL_ONES64(oword)                                  \
 205        (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0))
 206
 207#define EFX_QWORD_IS_ALL_ONES64(qword)                                  \
 208        ((qword).u64[0] == ~((__force __le64) 0))
 209
 210#define EFX_OWORD_IS_ALL_ONES32(oword)                                  \
 211        (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \
 212         == ~((__force __le32) 0))
 213
 214#define EFX_QWORD_IS_ALL_ONES32(qword)                                  \
 215        (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0))
 216
 217#define EFX_DWORD_IS_ALL_ONES(dword)                                    \
 218        ((dword).u32[0] == ~((__force __le32) 0))
 219
 220#if BITS_PER_LONG == 64
 221#define EFX_OWORD_FIELD         EFX_OWORD_FIELD64
 222#define EFX_QWORD_FIELD         EFX_QWORD_FIELD64
 223#define EFX_OWORD_IS_ZERO       EFX_OWORD_IS_ZERO64
 224#define EFX_QWORD_IS_ZERO       EFX_QWORD_IS_ZERO64
 225#define EFX_OWORD_IS_ALL_ONES   EFX_OWORD_IS_ALL_ONES64
 226#define EFX_QWORD_IS_ALL_ONES   EFX_QWORD_IS_ALL_ONES64
 227#else
 228#define EFX_OWORD_FIELD         EFX_OWORD_FIELD32
 229#define EFX_QWORD_FIELD         EFX_QWORD_FIELD32
 230#define EFX_OWORD_IS_ZERO       EFX_OWORD_IS_ZERO32
 231#define EFX_QWORD_IS_ZERO       EFX_QWORD_IS_ZERO32
 232#define EFX_OWORD_IS_ALL_ONES   EFX_OWORD_IS_ALL_ONES32
 233#define EFX_QWORD_IS_ALL_ONES   EFX_QWORD_IS_ALL_ONES32
 234#endif
 235
 236/*
 237 * Construct bit field portion
 238 *
 239 * Creates the portion of the bit field [low,high) that lies within
 240 * the range [min,max).
 241 */
 242#define EFX_INSERT_NATIVE64(min, max, low, high, value)         \
 243        (((low > max) || (high < min)) ? 0 :                    \
 244         ((low > min) ?                                         \
 245          (((u64) (value)) << (low - min)) :            \
 246          (((u64) (value)) >> (min - low))))
 247
 248#define EFX_INSERT_NATIVE32(min, max, low, high, value)         \
 249        (((low > max) || (high < min)) ? 0 :                    \
 250         ((low > min) ?                                         \
 251          (((u32) (value)) << (low - min)) :            \
 252          (((u32) (value)) >> (min - low))))
 253
 254#define EFX_INSERT_NATIVE(min, max, low, high, value)           \
 255        ((((max - min) >= 32) || ((high - low) >= 32)) ?        \
 256         EFX_INSERT_NATIVE64(min, max, low, high, value) :      \
 257         EFX_INSERT_NATIVE32(min, max, low, high, value))
 258
 259/*
 260 * Construct bit field portion
 261 *
 262 * Creates the portion of the named bit field that lies within the
 263 * range [min,max).
 264 */
 265#define EFX_INSERT_FIELD_NATIVE(min, max, field, value)         \
 266        EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field),         \
 267                          EFX_HIGH_BIT(field), value)
 268
 269/*
 270 * Construct bit field
 271 *
 272 * Creates the portion of the named bit fields that lie within the
 273 * range [min,max).
 274 */
 275#define EFX_INSERT_FIELDS_NATIVE(min, max,                              \
 276                                 field1, value1,                        \
 277                                 field2, value2,                        \
 278                                 field3, value3,                        \
 279                                 field4, value4,                        \
 280                                 field5, value5,                        \
 281                                 field6, value6,                        \
 282                                 field7, value7,                        \
 283                                 field8, value8,                        \
 284                                 field9, value9,                        \
 285                                 field10, value10,                      \
 286                                 field11, value11,                      \
 287                                 field12, value12,                      \
 288                                 field13, value13)                      \
 289        (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) |      \
 290         EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) |      \
 291         EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) |      \
 292         EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) |      \
 293         EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) |      \
 294         EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) |      \
 295         EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) |      \
 296         EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) |      \
 297         EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) |      \
 298         EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10)) |    \
 299         EFX_INSERT_FIELD_NATIVE((min), (max), field11, (value11)) |    \
 300         EFX_INSERT_FIELD_NATIVE((min), (max), field12, (value12)) |    \
 301         EFX_INSERT_FIELD_NATIVE((min), (max), field13, (value13)))
 302
 303#define EFX_INSERT_FIELDS64(...)                                \
 304        cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
 305
 306#define EFX_INSERT_FIELDS32(...)                                \
 307        cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
 308
 309#define EFX_POPULATE_OWORD64(oword, ...) do {                           \
 310        (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__);       \
 311        (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__);     \
 312        } while (0)
 313
 314#define EFX_POPULATE_QWORD64(qword, ...) do {                           \
 315        (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__);       \
 316        } while (0)
 317
 318#define EFX_POPULATE_OWORD32(oword, ...) do {                           \
 319        (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__);       \
 320        (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__);      \
 321        (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__);      \
 322        (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__);     \
 323        } while (0)
 324
 325#define EFX_POPULATE_QWORD32(qword, ...) do {                           \
 326        (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__);       \
 327        (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__);      \
 328        } while (0)
 329
 330#define EFX_POPULATE_DWORD(dword, ...) do {                             \
 331        (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__);       \
 332        } while (0)
 333
 334#if BITS_PER_LONG == 64
 335#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64
 336#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64
 337#else
 338#define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32
 339#define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32
 340#endif
 341
 342/* Populate an octword field with various numbers of arguments */
 343#define EFX_POPULATE_OWORD_13 EFX_POPULATE_OWORD
 344#define EFX_POPULATE_OWORD_12(oword, ...) \
 345        EFX_POPULATE_OWORD_13(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 346#define EFX_POPULATE_OWORD_11(oword, ...) \
 347        EFX_POPULATE_OWORD_12(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 348#define EFX_POPULATE_OWORD_10(oword, ...) \
 349        EFX_POPULATE_OWORD_11(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 350#define EFX_POPULATE_OWORD_9(oword, ...) \
 351        EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 352#define EFX_POPULATE_OWORD_8(oword, ...) \
 353        EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 354#define EFX_POPULATE_OWORD_7(oword, ...) \
 355        EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 356#define EFX_POPULATE_OWORD_6(oword, ...) \
 357        EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 358#define EFX_POPULATE_OWORD_5(oword, ...) \
 359        EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 360#define EFX_POPULATE_OWORD_4(oword, ...) \
 361        EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 362#define EFX_POPULATE_OWORD_3(oword, ...) \
 363        EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 364#define EFX_POPULATE_OWORD_2(oword, ...) \
 365        EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 366#define EFX_POPULATE_OWORD_1(oword, ...) \
 367        EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 368#define EFX_ZERO_OWORD(oword) \
 369        EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0)
 370#define EFX_SET_OWORD(oword) \
 371        EFX_POPULATE_OWORD_4(oword, \
 372                             EFX_DWORD_0, 0xffffffff, \
 373                             EFX_DWORD_1, 0xffffffff, \
 374                             EFX_DWORD_2, 0xffffffff, \
 375                             EFX_DWORD_3, 0xffffffff)
 376
 377/* Populate a quadword field with various numbers of arguments */
 378#define EFX_POPULATE_QWORD_13 EFX_POPULATE_QWORD
 379#define EFX_POPULATE_QWORD_12(qword, ...) \
 380        EFX_POPULATE_QWORD_13(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 381#define EFX_POPULATE_QWORD_11(qword, ...) \
 382        EFX_POPULATE_QWORD_12(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 383#define EFX_POPULATE_QWORD_10(qword, ...) \
 384        EFX_POPULATE_QWORD_11(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 385#define EFX_POPULATE_QWORD_9(qword, ...) \
 386        EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 387#define EFX_POPULATE_QWORD_8(qword, ...) \
 388        EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 389#define EFX_POPULATE_QWORD_7(qword, ...) \
 390        EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 391#define EFX_POPULATE_QWORD_6(qword, ...) \
 392        EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 393#define EFX_POPULATE_QWORD_5(qword, ...) \
 394        EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 395#define EFX_POPULATE_QWORD_4(qword, ...) \
 396        EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 397#define EFX_POPULATE_QWORD_3(qword, ...) \
 398        EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 399#define EFX_POPULATE_QWORD_2(qword, ...) \
 400        EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 401#define EFX_POPULATE_QWORD_1(qword, ...) \
 402        EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 403#define EFX_ZERO_QWORD(qword) \
 404        EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0)
 405#define EFX_SET_QWORD(qword) \
 406        EFX_POPULATE_QWORD_2(qword, \
 407                             EFX_DWORD_0, 0xffffffff, \
 408                             EFX_DWORD_1, 0xffffffff)
 409
 410/* Populate a dword field with various numbers of arguments */
 411#define EFX_POPULATE_DWORD_13 EFX_POPULATE_DWORD
 412#define EFX_POPULATE_DWORD_12(dword, ...) \
 413        EFX_POPULATE_DWORD_13(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 414#define EFX_POPULATE_DWORD_11(dword, ...) \
 415        EFX_POPULATE_DWORD_12(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 416#define EFX_POPULATE_DWORD_10(dword, ...) \
 417        EFX_POPULATE_DWORD_11(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 418#define EFX_POPULATE_DWORD_9(dword, ...) \
 419        EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 420#define EFX_POPULATE_DWORD_8(dword, ...) \
 421        EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 422#define EFX_POPULATE_DWORD_7(dword, ...) \
 423        EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 424#define EFX_POPULATE_DWORD_6(dword, ...) \
 425        EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 426#define EFX_POPULATE_DWORD_5(dword, ...) \
 427        EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 428#define EFX_POPULATE_DWORD_4(dword, ...) \
 429        EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 430#define EFX_POPULATE_DWORD_3(dword, ...) \
 431        EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 432#define EFX_POPULATE_DWORD_2(dword, ...) \
 433        EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 434#define EFX_POPULATE_DWORD_1(dword, ...) \
 435        EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 436#define EFX_ZERO_DWORD(dword) \
 437        EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0)
 438#define EFX_SET_DWORD(dword) \
 439        EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff)
 440
 441/*
 442 * Modify a named field within an already-populated structure.  Used
 443 * for read-modify-write operations.
 444 *
 445 */
 446#define EFX_INVERT_OWORD(oword) do {            \
 447        (oword).u64[0] = ~((oword).u64[0]);     \
 448        (oword).u64[1] = ~((oword).u64[1]);     \
 449        } while (0)
 450
 451#define EFX_AND_OWORD(oword, from, mask)                        \
 452        do {                                                    \
 453                (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \
 454                (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \
 455        } while (0)
 456
 457#define EFX_AND_QWORD(qword, from, mask)                        \
 458                (qword).u64[0] = (from).u64[0] & (mask).u64[0]
 459
 460#define EFX_OR_OWORD(oword, from, mask)                         \
 461        do {                                                    \
 462                (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \
 463                (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \
 464        } while (0)
 465
 466#define EFX_INSERT64(min, max, low, high, value)                        \
 467        cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value))
 468
 469#define EFX_INSERT32(min, max, low, high, value)                        \
 470        cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value))
 471
 472#define EFX_INPLACE_MASK64(min, max, low, high)                         \
 473        EFX_INSERT64(min, max, low, high, EFX_MASK64((high) + 1 - (low)))
 474
 475#define EFX_INPLACE_MASK32(min, max, low, high)                         \
 476        EFX_INSERT32(min, max, low, high, EFX_MASK32((high) + 1 - (low)))
 477
 478#define EFX_SET_OWORD64(oword, low, high, value) do {                   \
 479        (oword).u64[0] = (((oword).u64[0]                               \
 480                           & ~EFX_INPLACE_MASK64(0,  63, low, high))    \
 481                          | EFX_INSERT64(0,  63, low, high, value));    \
 482        (oword).u64[1] = (((oword).u64[1]                               \
 483                           & ~EFX_INPLACE_MASK64(64, 127, low, high))   \
 484                          | EFX_INSERT64(64, 127, low, high, value));   \
 485        } while (0)
 486
 487#define EFX_SET_QWORD64(qword, low, high, value) do {                   \
 488        (qword).u64[0] = (((qword).u64[0]                               \
 489                           & ~EFX_INPLACE_MASK64(0, 63, low, high))     \
 490                          | EFX_INSERT64(0, 63, low, high, value));     \
 491        } while (0)
 492
 493#define EFX_SET_OWORD32(oword, low, high, value) do {                   \
 494        (oword).u32[0] = (((oword).u32[0]                               \
 495                           & ~EFX_INPLACE_MASK32(0, 31, low, high))     \
 496                          | EFX_INSERT32(0, 31, low, high, value));     \
 497        (oword).u32[1] = (((oword).u32[1]                               \
 498                           & ~EFX_INPLACE_MASK32(32, 63, low, high))    \
 499                          | EFX_INSERT32(32, 63, low, high, value));    \
 500        (oword).u32[2] = (((oword).u32[2]                               \
 501                           & ~EFX_INPLACE_MASK32(64, 95, low, high))    \
 502                          | EFX_INSERT32(64, 95, low, high, value));    \
 503        (oword).u32[3] = (((oword).u32[3]                               \
 504                           & ~EFX_INPLACE_MASK32(96, 127, low, high))   \
 505                          | EFX_INSERT32(96, 127, low, high, value));   \
 506        } while (0)
 507
 508#define EFX_SET_QWORD32(qword, low, high, value) do {                   \
 509        (qword).u32[0] = (((qword).u32[0]                               \
 510                           & ~EFX_INPLACE_MASK32(0, 31, low, high))     \
 511                          | EFX_INSERT32(0, 31, low, high, value));     \
 512        (qword).u32[1] = (((qword).u32[1]                               \
 513                           & ~EFX_INPLACE_MASK32(32, 63, low, high))    \
 514                          | EFX_INSERT32(32, 63, low, high, value));    \
 515        } while (0)
 516
 517#define EFX_SET_DWORD32(dword, low, high, value) do {                   \
 518        (dword).u32[0] = (((dword).u32[0]                               \
 519                           & ~EFX_INPLACE_MASK32(0, 31, low, high))     \
 520                          | EFX_INSERT32(0, 31, low, high, value));     \
 521        } while (0)
 522
 523#define EFX_SET_OWORD_FIELD64(oword, field, value)                      \
 524        EFX_SET_OWORD64(oword, EFX_LOW_BIT(field),                      \
 525                         EFX_HIGH_BIT(field), value)
 526
 527#define EFX_SET_QWORD_FIELD64(qword, field, value)                      \
 528        EFX_SET_QWORD64(qword, EFX_LOW_BIT(field),                      \
 529                         EFX_HIGH_BIT(field), value)
 530
 531#define EFX_SET_OWORD_FIELD32(oword, field, value)                      \
 532        EFX_SET_OWORD32(oword, EFX_LOW_BIT(field),                      \
 533                         EFX_HIGH_BIT(field), value)
 534
 535#define EFX_SET_QWORD_FIELD32(qword, field, value)                      \
 536        EFX_SET_QWORD32(qword, EFX_LOW_BIT(field),                      \
 537                         EFX_HIGH_BIT(field), value)
 538
 539#define EFX_SET_DWORD_FIELD(dword, field, value)                        \
 540        EFX_SET_DWORD32(dword, EFX_LOW_BIT(field),                      \
 541                         EFX_HIGH_BIT(field), value)
 542
 543
 544
 545#if BITS_PER_LONG == 64
 546#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64
 547#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64
 548#else
 549#define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32
 550#define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32
 551#endif
 552
 553/* Used to avoid compiler warnings about shift range exceeding width
 554 * of the data types when dma_addr_t is only 32 bits wide.
 555 */
 556#define DMA_ADDR_T_WIDTH        (8 * sizeof(dma_addr_t))
 557#define EFX_DMA_TYPE_WIDTH(width) \
 558        (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
 559
 560
 561/* Static initialiser */
 562#define EFX_OWORD32(a, b, c, d)                         \
 563        { .u32 = { cpu_to_le32(a), cpu_to_le32(b),      \
 564                   cpu_to_le32(c), cpu_to_le32(d) } }
 565
 566#endif /* EFX_BITFIELD_H */
 567