drivers/net/sfc/bitfield.h

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2008 Solarflare Communications Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #ifndef EFX_BITFIELD_H
  12 #define EFX_BITFIELD_H
  13
  14 /*
  15  * Efx bitfield access
  16  *
  17  * Efx NICs make extensive use of bitfields up to 128 bits
  18  * wide.  Since there is no native 128-bit datatype on most systems,
  19  * and since 64-bit datatypes are inefficient on 32-bit systems and
  20  * vice versa, we wrap accesses in a way that uses the most efficient
  21  * datatype.
  22  *
  23  * The NICs are PCI devices and therefore little-endian.  Since most
  24  * of the quantities that we deal with are DMAed to/from host memory,
  25  * we define our datatypes (efx_oword_t, efx_qword_t and
  26  * efx_dword_t) to be little-endian.
  27  */
  28
  29 /* Lowest bit numbers and widths */
  30 #define EFX_DUMMY_FIELD_LBN 0
  31 #define EFX_DUMMY_FIELD_WIDTH 0
  32 #define EFX_DWORD_0_LBN 0
  33 #define EFX_DWORD_0_WIDTH 32
  34 #define EFX_DWORD_1_LBN 32
  35 #define EFX_DWORD_1_WIDTH 32
  36 #define EFX_DWORD_2_LBN 64
  37 #define EFX_DWORD_2_WIDTH 32
  38 #define EFX_DWORD_3_LBN 96
  39 #define EFX_DWORD_3_WIDTH 32
  40
  41 /* Specified attribute (e.g. LBN) of the specified field */
  42 #define EFX_VAL(field, attribute) field ## _ ## attribute
  43 /* Low bit number of the specified field */
  44 #define EFX_LOW_BIT(field) EFX_VAL(field, LBN)
  45 /* Bit width of the specified field */
  46 #define EFX_WIDTH(field) EFX_VAL(field, WIDTH)
  47 /* High bit number of the specified field */
  48 #define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1)
  49 /* Mask equal in width to the specified field.
  50  *
  51  * For example, a field with width 5 would have a mask of 0x1f.
  52  *
  53  * The maximum width mask that can be generated is 64 bits.
  54  */
  55 #define EFX_MASK64(field)                                       \
  56         (EFX_WIDTH(field) == 64 ? ~((u64) 0) :          \
  57          (((((u64) 1) << EFX_WIDTH(field))) - 1))
  58
  59 /* Mask equal in width to the specified field.
  60  *
  61  * For example, a field with width 5 would have a mask of 0x1f.
  62  *
  63  * The maximum width mask that can be generated is 32 bits.  Use
  64  * EFX_MASK64 for higher width fields.
  65  */
  66 #define EFX_MASK32(field)                                       \
  67         (EFX_WIDTH(field) == 32 ? ~((u32) 0) :          \
  68          (((((u32) 1) << EFX_WIDTH(field))) - 1))
  69
  70 /* A doubleword (i.e. 4 byte) datatype - little-endian in HW */
  71 typedef union efx_dword {
  72         __le32 u32[1];
  73 } efx_dword_t;
  74
  75 /* A quadword (i.e. 8 byte) datatype - little-endian in HW */
  76 typedef union efx_qword {
  77         __le64 u64[1];
  78         __le32 u32[2];
  79         efx_dword_t dword[2];
  80 } efx_qword_t;
  81
  82 /* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */
  83 typedef union efx_oword {
  84         __le64 u64[2];
  85         efx_qword_t qword[2];
  86         __le32 u32[4];
  87         efx_dword_t dword[4];
  88 } efx_oword_t;
  89
  90 /* Format string and value expanders for printk */
  91 #define EFX_DWORD_FMT "%08x"
  92 #define EFX_QWORD_FMT "%08x:%08x"
  93 #define EFX_OWORD_FMT "%08x:%08x:%08x:%08x"
  94 #define EFX_DWORD_VAL(dword)                            \
  95         ((unsigned int) le32_to_cpu((dword).u32[0]))
  96 #define EFX_QWORD_VAL(qword)                            \
  97         ((unsigned int) le32_to_cpu((qword).u32[1])),   \
  98         ((unsigned int) le32_to_cpu((qword).u32[0]))
  99 #define EFX_OWORD_VAL(oword)                            \
 100         ((unsigned int) le32_to_cpu((oword).u32[3])),   \
 101         ((unsigned int) le32_to_cpu((oword).u32[2])),   \
 102         ((unsigned int) le32_to_cpu((oword).u32[1])),   \
 103         ((unsigned int) le32_to_cpu((oword).u32[0]))
 104
 105 /*
 106  * Extract bit field portion [low,high) from the native-endian element
 107  * which contains bits [min,max).
 108  *
 109  * For example, suppose "element" represents the high 32 bits of a
 110  * 64-bit value, and we wish to extract the bits belonging to the bit
 111  * field occupying bits 28-45 of this 64-bit value.
 112  *
 113  * Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give
 114  *
 115  *   ( element ) << 4
 116  *
 117  * The result will contain the relevant bits filled in in the range
 118  * [0,high-low), with garbage in bits [high-low+1,...).
 119  */
 120 #define EFX_EXTRACT_NATIVE(native_element, min, max, low, high)         \
 121         (((low > max) || (high < min)) ? 0 :                            \
 122          ((low > min) ?                                                 \
 123           ((native_element) >> (low - min)) :                           \
 124           ((native_element) << (min - low))))
 125
 126 /*
 127  * Extract bit field portion [low,high) from the 64-bit little-endian
 128  * element which contains bits [min,max)
 129  */
 130 #define EFX_EXTRACT64(element, min, max, low, high)                     \
 131         EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high)
 132
 133 /*
 134  * Extract bit field portion [low,high) from the 32-bit little-endian
 135  * element which contains bits [min,max)
 136  */
 137 #define EFX_EXTRACT32(element, min, max, low, high)                     \
 138         EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high)
 139
 140 #define EFX_EXTRACT_OWORD64(oword, low, high)                           \
 141         (EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) |              \
 142          EFX_EXTRACT64((oword).u64[1], 64, 127, low, high))
 143
 144 #define EFX_EXTRACT_QWORD64(qword, low, high)                           \
 145         EFX_EXTRACT64((qword).u64[0], 0, 63, low, high)
 146
 147 #define EFX_EXTRACT_OWORD32(oword, low, high)                           \
 148         (EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) |              \
 149          EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) |             \
 150          EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) |             \
 151          EFX_EXTRACT32((oword).u32[3], 96, 127, low, high))
 152
 153 #define EFX_EXTRACT_QWORD32(qword, low, high)                           \
 154         (EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) |              \
 155          EFX_EXTRACT32((qword).u32[1], 32, 63, low, high))
 156
 157 #define EFX_EXTRACT_DWORD(dword, low, high)                             \
 158         EFX_EXTRACT32((dword).u32[0], 0, 31, low, high)
 159
 160 #define EFX_OWORD_FIELD64(oword, field)                                 \
 161         (EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), EFX_HIGH_BIT(field)) \
 162          & EFX_MASK64(field))
 163
 164 #define EFX_QWORD_FIELD64(qword, field)                                 \
 165         (EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), EFX_HIGH_BIT(field)) \
 166          & EFX_MASK64(field))
 167
 168 #define EFX_OWORD_FIELD32(oword, field)                                 \
 169         (EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), EFX_HIGH_BIT(field)) \
 170          & EFX_MASK32(field))
 171
 172 #define EFX_QWORD_FIELD32(qword, field)                                 \
 173         (EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), EFX_HIGH_BIT(field)) \
 174          & EFX_MASK32(field))
 175
 176 #define EFX_DWORD_FIELD(dword, field)                                      \
 177         (EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), EFX_HIGH_BIT(field)) \
 178          & EFX_MASK32(field))
 179
 180 #define EFX_OWORD_IS_ZERO64(oword)                                      \
 181         (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0)
 182
 183 #define EFX_QWORD_IS_ZERO64(qword)                                      \
 184         (((qword).u64[0]) == (__force __le64) 0)
 185
 186 #define EFX_OWORD_IS_ZERO32(oword)                                           \
 187         (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \
 188          == (__force __le32) 0)
 189
 190 #define EFX_QWORD_IS_ZERO32(qword)                                      \
 191         (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0)
 192
 193 #define EFX_DWORD_IS_ZERO(dword)                                        \
 194         (((dword).u32[0]) == (__force __le32) 0)
 195
 196 #define EFX_OWORD_IS_ALL_ONES64(oword)                                  \
 197         (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0))
 198
 199 #define EFX_QWORD_IS_ALL_ONES64(qword)                                  \
 200         ((qword).u64[0] == ~((__force __le64) 0))
 201
 202 #define EFX_OWORD_IS_ALL_ONES32(oword)                                  \
 203         (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \
 204          == ~((__force __le32) 0))
 205
 206 #define EFX_QWORD_IS_ALL_ONES32(qword)                                  \
 207         (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0))
 208
 209 #define EFX_DWORD_IS_ALL_ONES(dword)                                    \
 210         ((dword).u32[0] == ~((__force __le32) 0))
 211
 212 #if BITS_PER_LONG == 64
 213 #define EFX_OWORD_FIELD         EFX_OWORD_FIELD64
 214 #define EFX_QWORD_FIELD         EFX_QWORD_FIELD64
 215 #define EFX_OWORD_IS_ZERO       EFX_OWORD_IS_ZERO64
 216 #define EFX_QWORD_IS_ZERO       EFX_QWORD_IS_ZERO64
 217 #define EFX_OWORD_IS_ALL_ONES   EFX_OWORD_IS_ALL_ONES64
 218 #define EFX_QWORD_IS_ALL_ONES   EFX_QWORD_IS_ALL_ONES64
 219 #else
 220 #define EFX_OWORD_FIELD         EFX_OWORD_FIELD32
 221 #define EFX_QWORD_FIELD         EFX_QWORD_FIELD32
 222 #define EFX_OWORD_IS_ZERO       EFX_OWORD_IS_ZERO32
 223 #define EFX_QWORD_IS_ZERO       EFX_QWORD_IS_ZERO32
 224 #define EFX_OWORD_IS_ALL_ONES   EFX_OWORD_IS_ALL_ONES32
 225 #define EFX_QWORD_IS_ALL_ONES   EFX_QWORD_IS_ALL_ONES32
 226 #endif
 227
 228 /*
 229  * Construct bit field portion
 230  *
 231  * Creates the portion of the bit field [low,high) that lies within
 232  * the range [min,max).
 233  */
 234 #define EFX_INSERT_NATIVE64(min, max, low, high, value)         \
 235         (((low > max) || (high < min)) ? 0 :                    \
 236          ((low > min) ?                                         \
 237           (((u64) (value)) << (low - min)) :            \
 238           (((u64) (value)) >> (min - low))))
 239
 240 #define EFX_INSERT_NATIVE32(min, max, low, high, value)         \
 241         (((low > max) || (high < min)) ? 0 :                    \
 242          ((low > min) ?                                         \
 243           (((u32) (value)) << (low - min)) :            \
 244           (((u32) (value)) >> (min - low))))
 245
 246 #define EFX_INSERT_NATIVE(min, max, low, high, value)           \
 247         ((((max - min) >= 32) || ((high - low) >= 32)) ?        \
 248          EFX_INSERT_NATIVE64(min, max, low, high, value) :      \
 249          EFX_INSERT_NATIVE32(min, max, low, high, value))
 250
 251 /*
 252  * Construct bit field portion
 253  *
 254  * Creates the portion of the named bit field that lies within the
 255  * range [min,max).
 256  */
 257 #define EFX_INSERT_FIELD_NATIVE(min, max, field, value)         \
 258         EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field),         \
 259                           EFX_HIGH_BIT(field), value)
 260
 261 /*
 262  * Construct bit field
 263  *
 264  * Creates the portion of the named bit fields that lie within the
 265  * range [min,max).
 266  */
 267 #define EFX_INSERT_FIELDS_NATIVE(min, max,                              \
 268                                  field1, value1,                        \
 269                                  field2, value2,                        \
 270                                  field3, value3,                        \
 271                                  field4, value4,                        \
 272                                  field5, value5,                        \
 273                                  field6, value6,                        \
 274                                  field7, value7,                        \
 275                                  field8, value8,                        \
 276                                  field9, value9,                        \
 277                                  field10, value10)                      \
 278         (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) |      \
 279          EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) |      \
 280          EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) |      \
 281          EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) |      \
 282          EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) |      \
 283          EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) |      \
 284          EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) |      \
 285          EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) |      \
 286          EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) |      \
 287          EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10)))
 288
 289 #define EFX_INSERT_FIELDS64(...)                                \
 290         cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
 291
 292 #define EFX_INSERT_FIELDS32(...)                                \
 293         cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__))
 294
 295 #define EFX_POPULATE_OWORD64(oword, ...) do {                           \
 296         (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__);       \
 297         (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__);     \
 298         } while (0)
 299
 300 #define EFX_POPULATE_QWORD64(qword, ...) do {                           \
 301         (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__);       \
 302         } while (0)
 303
 304 #define EFX_POPULATE_OWORD32(oword, ...) do {                           \
 305         (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__);       \
 306         (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__);      \
 307         (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__);      \
 308         (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__);     \
 309         } while (0)
 310
 311 #define EFX_POPULATE_QWORD32(qword, ...) do {                           \
 312         (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__);       \
 313         (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__);      \
 314         } while (0)
 315
 316 #define EFX_POPULATE_DWORD(dword, ...) do {                             \
 317         (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__);       \
 318         } while (0)
 319
 320 #if BITS_PER_LONG == 64
 321 #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64
 322 #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64
 323 #else
 324 #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32
 325 #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32
 326 #endif
 327
 328 /* Populate an octword field with various numbers of arguments */
 329 #define EFX_POPULATE_OWORD_10 EFX_POPULATE_OWORD
 330 #define EFX_POPULATE_OWORD_9(oword, ...) \
 331         EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 332 #define EFX_POPULATE_OWORD_8(oword, ...) \
 333         EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 334 #define EFX_POPULATE_OWORD_7(oword, ...) \
 335         EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 336 #define EFX_POPULATE_OWORD_6(oword, ...) \
 337         EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 338 #define EFX_POPULATE_OWORD_5(oword, ...) \
 339         EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 340 #define EFX_POPULATE_OWORD_4(oword, ...) \
 341         EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 342 #define EFX_POPULATE_OWORD_3(oword, ...) \
 343         EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 344 #define EFX_POPULATE_OWORD_2(oword, ...) \
 345         EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 346 #define EFX_POPULATE_OWORD_1(oword, ...) \
 347         EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 348 #define EFX_ZERO_OWORD(oword) \
 349         EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0)
 350 #define EFX_SET_OWORD(oword) \
 351         EFX_POPULATE_OWORD_4(oword, \
 352                              EFX_DWORD_0, 0xffffffff, \
 353                              EFX_DWORD_1, 0xffffffff, \
 354                              EFX_DWORD_2, 0xffffffff, \
 355                              EFX_DWORD_3, 0xffffffff)
 356
 357 /* Populate a quadword field with various numbers of arguments */
 358 #define EFX_POPULATE_QWORD_10 EFX_POPULATE_QWORD
 359 #define EFX_POPULATE_QWORD_9(qword, ...) \
 360         EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 361 #define EFX_POPULATE_QWORD_8(qword, ...) \
 362         EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 363 #define EFX_POPULATE_QWORD_7(qword, ...) \
 364         EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 365 #define EFX_POPULATE_QWORD_6(qword, ...) \
 366         EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 367 #define EFX_POPULATE_QWORD_5(qword, ...) \
 368         EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 369 #define EFX_POPULATE_QWORD_4(qword, ...) \
 370         EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 371 #define EFX_POPULATE_QWORD_3(qword, ...) \
 372         EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 373 #define EFX_POPULATE_QWORD_2(qword, ...) \
 374         EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 375 #define EFX_POPULATE_QWORD_1(qword, ...) \
 376         EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 377 #define EFX_ZERO_QWORD(qword) \
 378         EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0)
 379 #define EFX_SET_QWORD(qword) \
 380         EFX_POPULATE_QWORD_2(qword, \
 381                              EFX_DWORD_0, 0xffffffff, \
 382                              EFX_DWORD_1, 0xffffffff)
 383
 384 /* Populate a dword field with various numbers of arguments */
 385 #define EFX_POPULATE_DWORD_10 EFX_POPULATE_DWORD
 386 #define EFX_POPULATE_DWORD_9(dword, ...) \
 387         EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 388 #define EFX_POPULATE_DWORD_8(dword, ...) \
 389         EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 390 #define EFX_POPULATE_DWORD_7(dword, ...) \
 391         EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 392 #define EFX_POPULATE_DWORD_6(dword, ...) \
 393         EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 394 #define EFX_POPULATE_DWORD_5(dword, ...) \
 395         EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 396 #define EFX_POPULATE_DWORD_4(dword, ...) \
 397         EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 398 #define EFX_POPULATE_DWORD_3(dword, ...) \
 399         EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 400 #define EFX_POPULATE_DWORD_2(dword, ...) \
 401         EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 402 #define EFX_POPULATE_DWORD_1(dword, ...) \
 403         EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__)
 404 #define EFX_ZERO_DWORD(dword) \
 405         EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0)
 406 #define EFX_SET_DWORD(dword) \
 407         EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff)
 408
 409 /*
 410  * Modify a named field within an already-populated structure.  Used
 411  * for read-modify-write operations.
 412  *
 413  */
 414
 415 #define EFX_INVERT_OWORD(oword) do {            \
 416         (oword).u64[0] = ~((oword).u64[0]);     \
 417         (oword).u64[1] = ~((oword).u64[1]);     \
 418         } while (0)
 419
 420 #define EFX_INSERT_FIELD64(...)                                 \
 421         cpu_to_le64(EFX_INSERT_FIELD_NATIVE(__VA_ARGS__))
 422
 423 #define EFX_INSERT_FIELD32(...)                                 \
 424         cpu_to_le32(EFX_INSERT_FIELD_NATIVE(__VA_ARGS__))
 425
 426 #define EFX_INPLACE_MASK64(min, max, field)                     \
 427         EFX_INSERT_FIELD64(min, max, field, EFX_MASK64(field))
 428
 429 #define EFX_INPLACE_MASK32(min, max, field)                     \
 430         EFX_INSERT_FIELD32(min, max, field, EFX_MASK32(field))
 431
 432 #define EFX_SET_OWORD_FIELD64(oword, field, value) do {                 \
 433         (oword).u64[0] = (((oword).u64[0]                               \
 434                            & ~EFX_INPLACE_MASK64(0,  63, field))        \
 435                           | EFX_INSERT_FIELD64(0,  63, field, value));  \
 436         (oword).u64[1] = (((oword).u64[1]                               \
 437                            & ~EFX_INPLACE_MASK64(64, 127, field))       \
 438                           | EFX_INSERT_FIELD64(64, 127, field, value)); \
 439         } while (0)
 440
 441 #define EFX_SET_QWORD_FIELD64(qword, field, value) do {                 \
 442         (qword).u64[0] = (((qword).u64[0]                               \
 443                            & ~EFX_INPLACE_MASK64(0, 63, field))         \
 444                           | EFX_INSERT_FIELD64(0, 63, field, value));   \
 445         } while (0)
 446
 447 #define EFX_SET_OWORD_FIELD32(oword, field, value) do {                 \
 448         (oword).u32[0] = (((oword).u32[0]                               \
 449                            & ~EFX_INPLACE_MASK32(0, 31, field))         \
 450                           | EFX_INSERT_FIELD32(0, 31, field, value));   \
 451         (oword).u32[1] = (((oword).u32[1]                               \
 452                            & ~EFX_INPLACE_MASK32(32, 63, field))        \
 453                           | EFX_INSERT_FIELD32(32, 63, field, value));  \
 454         (oword).u32[2] = (((oword).u32[2]                               \
 455                            & ~EFX_INPLACE_MASK32(64, 95, field))        \
 456                           | EFX_INSERT_FIELD32(64, 95, field, value));  \
 457         (oword).u32[3] = (((oword).u32[3]                               \
 458                            & ~EFX_INPLACE_MASK32(96, 127, field))       \
 459                           | EFX_INSERT_FIELD32(96, 127, field, value)); \
 460         } while (0)
 461
 462 #define EFX_SET_QWORD_FIELD32(qword, field, value) do {                 \
 463         (qword).u32[0] = (((qword).u32[0]                               \
 464                            & ~EFX_INPLACE_MASK32(0, 31, field))         \
 465                           | EFX_INSERT_FIELD32(0, 31, field, value));   \
 466         (qword).u32[1] = (((qword).u32[1]                               \
 467                            & ~EFX_INPLACE_MASK32(32, 63, field))        \
 468                           | EFX_INSERT_FIELD32(32, 63, field, value));  \
 469         } while (0)
 470
 471 #define EFX_SET_DWORD_FIELD(dword, field, value) do {                   \
 472         (dword).u32[0] = (((dword).u32[0]                               \
 473                            & ~EFX_INPLACE_MASK32(0, 31, field))         \
 474                           | EFX_INSERT_FIELD32(0, 31, field, value));   \
 475         } while (0)
 476
 477 #if BITS_PER_LONG == 64
 478 #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64
 479 #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64
 480 #else
 481 #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32
 482 #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32
 483 #endif
 484
 485 #define EFX_SET_OWORD_FIELD_VER(efx, oword, field, value) do { \
 486         if (falcon_rev(efx) >= FALCON_REV_B0) {                    \
 487                 EFX_SET_OWORD_FIELD((oword), field##_B0, (value)); \
 488         } else { \
 489                 EFX_SET_OWORD_FIELD((oword), field##_A1, (value)); \
 490         } \
 491 } while (0)
 492
 493 #define EFX_QWORD_FIELD_VER(efx, qword, field)  \
 494         (falcon_rev(efx) >= FALCON_REV_B0 ?     \
 495          EFX_QWORD_FIELD((qword), field##_B0) : \
 496          EFX_QWORD_FIELD((qword), field##_A1))
 497
 498 /* Used to avoid compiler warnings about shift range exceeding width
 499  * of the data types when dma_addr_t is only 32 bits wide.
 500  */
 501 #define DMA_ADDR_T_WIDTH        (8 * sizeof(dma_addr_t))
 502 #define EFX_DMA_TYPE_WIDTH(width) \
 503         (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
 504
 505 #endif /* EFX_BITFIELD_H */