bitfield.h (19401B)
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 EF4_BITFIELD_H 9#define EF4_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 (ef4_oword_t, ef4_qword_t and 23 * ef4_dword_t) to be little-endian. 24 */ 25 26/* Lowest bit numbers and widths */ 27#define EF4_DUMMY_FIELD_LBN 0 28#define EF4_DUMMY_FIELD_WIDTH 0 29#define EF4_WORD_0_LBN 0 30#define EF4_WORD_0_WIDTH 16 31#define EF4_WORD_1_LBN 16 32#define EF4_WORD_1_WIDTH 16 33#define EF4_DWORD_0_LBN 0 34#define EF4_DWORD_0_WIDTH 32 35#define EF4_DWORD_1_LBN 32 36#define EF4_DWORD_1_WIDTH 32 37#define EF4_DWORD_2_LBN 64 38#define EF4_DWORD_2_WIDTH 32 39#define EF4_DWORD_3_LBN 96 40#define EF4_DWORD_3_WIDTH 32 41#define EF4_QWORD_0_LBN 0 42#define EF4_QWORD_0_WIDTH 64 43 44/* Specified attribute (e.g. LBN) of the specified field */ 45#define EF4_VAL(field, attribute) field ## _ ## attribute 46/* Low bit number of the specified field */ 47#define EF4_LOW_BIT(field) EF4_VAL(field, LBN) 48/* Bit width of the specified field */ 49#define EF4_WIDTH(field) EF4_VAL(field, WIDTH) 50/* High bit number of the specified field */ 51#define EF4_HIGH_BIT(field) (EF4_LOW_BIT(field) + EF4_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 EF4_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 * EF4_MASK64 for higher width fields. 68 */ 69#define EF4_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 ef4_dword { 75 __le32 u32[1]; 76} ef4_dword_t; 77 78/* A quadword (i.e. 8 byte) datatype - little-endian in HW */ 79typedef union ef4_qword { 80 __le64 u64[1]; 81 __le32 u32[2]; 82 ef4_dword_t dword[2]; 83} ef4_qword_t; 84 85/* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */ 86typedef union ef4_oword { 87 __le64 u64[2]; 88 ef4_qword_t qword[2]; 89 __le32 u32[4]; 90 ef4_dword_t dword[4]; 91} ef4_oword_t; 92 93/* Format string and value expanders for printk */ 94#define EF4_DWORD_FMT "%08x" 95#define EF4_QWORD_FMT "%08x:%08x" 96#define EF4_OWORD_FMT "%08x:%08x:%08x:%08x" 97#define EF4_DWORD_VAL(dword) \ 98 ((unsigned int) le32_to_cpu((dword).u32[0])) 99#define EF4_QWORD_VAL(qword) \ 100 ((unsigned int) le32_to_cpu((qword).u32[1])), \ 101 ((unsigned int) le32_to_cpu((qword).u32[0])) 102#define EF4_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 EF4_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 EF4_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 EF4_EXTRACT64(element, min, max, low, high) \ 134 EF4_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 EF4_EXTRACT32(element, min, max, low, high) \ 141 EF4_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high) 142 143#define EF4_EXTRACT_OWORD64(oword, low, high) \ 144 ((EF4_EXTRACT64((oword).u64[0], 0, 63, low, high) | \ 145 EF4_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \ 146 EF4_MASK64((high) + 1 - (low))) 147 148#define EF4_EXTRACT_QWORD64(qword, low, high) \ 149 (EF4_EXTRACT64((qword).u64[0], 0, 63, low, high) & \ 150 EF4_MASK64((high) + 1 - (low))) 151 152#define EF4_EXTRACT_OWORD32(oword, low, high) \ 153 ((EF4_EXTRACT32((oword).u32[0], 0, 31, low, high) | \ 154 EF4_EXTRACT32((oword).u32[1], 32, 63, low, high) | \ 155 EF4_EXTRACT32((oword).u32[2], 64, 95, low, high) | \ 156 EF4_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \ 157 EF4_MASK32((high) + 1 - (low))) 158 159#define EF4_EXTRACT_QWORD32(qword, low, high) \ 160 ((EF4_EXTRACT32((qword).u32[0], 0, 31, low, high) | \ 161 EF4_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \ 162 EF4_MASK32((high) + 1 - (low))) 163 164#define EF4_EXTRACT_DWORD(dword, low, high) \ 165 (EF4_EXTRACT32((dword).u32[0], 0, 31, low, high) & \ 166 EF4_MASK32((high) + 1 - (low))) 167 168#define EF4_OWORD_FIELD64(oword, field) \ 169 EF4_EXTRACT_OWORD64(oword, EF4_LOW_BIT(field), \ 170 EF4_HIGH_BIT(field)) 171 172#define EF4_QWORD_FIELD64(qword, field) \ 173 EF4_EXTRACT_QWORD64(qword, EF4_LOW_BIT(field), \ 174 EF4_HIGH_BIT(field)) 175 176#define EF4_OWORD_FIELD32(oword, field) \ 177 EF4_EXTRACT_OWORD32(oword, EF4_LOW_BIT(field), \ 178 EF4_HIGH_BIT(field)) 179 180#define EF4_QWORD_FIELD32(qword, field) \ 181 EF4_EXTRACT_QWORD32(qword, EF4_LOW_BIT(field), \ 182 EF4_HIGH_BIT(field)) 183 184#define EF4_DWORD_FIELD(dword, field) \ 185 EF4_EXTRACT_DWORD(dword, EF4_LOW_BIT(field), \ 186 EF4_HIGH_BIT(field)) 187 188#define EF4_OWORD_IS_ZERO64(oword) \ 189 (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0) 190 191#define EF4_QWORD_IS_ZERO64(qword) \ 192 (((qword).u64[0]) == (__force __le64) 0) 193 194#define EF4_OWORD_IS_ZERO32(oword) \ 195 (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \ 196 == (__force __le32) 0) 197 198#define EF4_QWORD_IS_ZERO32(qword) \ 199 (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0) 200 201#define EF4_DWORD_IS_ZERO(dword) \ 202 (((dword).u32[0]) == (__force __le32) 0) 203 204#define EF4_OWORD_IS_ALL_ONES64(oword) \ 205 (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0)) 206 207#define EF4_QWORD_IS_ALL_ONES64(qword) \ 208 ((qword).u64[0] == ~((__force __le64) 0)) 209 210#define EF4_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 EF4_QWORD_IS_ALL_ONES32(qword) \ 215 (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0)) 216 217#define EF4_DWORD_IS_ALL_ONES(dword) \ 218 ((dword).u32[0] == ~((__force __le32) 0)) 219 220#if BITS_PER_LONG == 64 221#define EF4_OWORD_FIELD EF4_OWORD_FIELD64 222#define EF4_QWORD_FIELD EF4_QWORD_FIELD64 223#define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO64 224#define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO64 225#define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES64 226#define EF4_QWORD_IS_ALL_ONES EF4_QWORD_IS_ALL_ONES64 227#else 228#define EF4_OWORD_FIELD EF4_OWORD_FIELD32 229#define EF4_QWORD_FIELD EF4_QWORD_FIELD32 230#define EF4_OWORD_IS_ZERO EF4_OWORD_IS_ZERO32 231#define EF4_QWORD_IS_ZERO EF4_QWORD_IS_ZERO32 232#define EF4_OWORD_IS_ALL_ONES EF4_OWORD_IS_ALL_ONES32 233#define EF4_QWORD_IS_ALL_ONES EF4_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 EF4_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 EF4_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 EF4_INSERT_NATIVE(min, max, low, high, value) \ 255 ((((max - min) >= 32) || ((high - low) >= 32)) ? \ 256 EF4_INSERT_NATIVE64(min, max, low, high, value) : \ 257 EF4_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 EF4_INSERT_FIELD_NATIVE(min, max, field, value) \ 266 EF4_INSERT_NATIVE(min, max, EF4_LOW_BIT(field), \ 267 EF4_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 EF4_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 (EF4_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \ 287 EF4_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \ 288 EF4_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \ 289 EF4_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \ 290 EF4_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \ 291 EF4_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \ 292 EF4_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \ 293 EF4_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \ 294 EF4_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \ 295 EF4_INSERT_FIELD_NATIVE((min), (max), field10, (value10))) 296 297#define EF4_INSERT_FIELDS64(...) \ 298 cpu_to_le64(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__)) 299 300#define EF4_INSERT_FIELDS32(...) \ 301 cpu_to_le32(EF4_INSERT_FIELDS_NATIVE(__VA_ARGS__)) 302 303#define EF4_POPULATE_OWORD64(oword, ...) do { \ 304 (oword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ 305 (oword).u64[1] = EF4_INSERT_FIELDS64(64, 127, __VA_ARGS__); \ 306 } while (0) 307 308#define EF4_POPULATE_QWORD64(qword, ...) do { \ 309 (qword).u64[0] = EF4_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ 310 } while (0) 311 312#define EF4_POPULATE_OWORD32(oword, ...) do { \ 313 (oword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ 314 (oword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ 315 (oword).u32[2] = EF4_INSERT_FIELDS32(64, 95, __VA_ARGS__); \ 316 (oword).u32[3] = EF4_INSERT_FIELDS32(96, 127, __VA_ARGS__); \ 317 } while (0) 318 319#define EF4_POPULATE_QWORD32(qword, ...) do { \ 320 (qword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ 321 (qword).u32[1] = EF4_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ 322 } while (0) 323 324#define EF4_POPULATE_DWORD(dword, ...) do { \ 325 (dword).u32[0] = EF4_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ 326 } while (0) 327 328#if BITS_PER_LONG == 64 329#define EF4_POPULATE_OWORD EF4_POPULATE_OWORD64 330#define EF4_POPULATE_QWORD EF4_POPULATE_QWORD64 331#else 332#define EF4_POPULATE_OWORD EF4_POPULATE_OWORD32 333#define EF4_POPULATE_QWORD EF4_POPULATE_QWORD32 334#endif 335 336/* Populate an octword field with various numbers of arguments */ 337#define EF4_POPULATE_OWORD_10 EF4_POPULATE_OWORD 338#define EF4_POPULATE_OWORD_9(oword, ...) \ 339 EF4_POPULATE_OWORD_10(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 340#define EF4_POPULATE_OWORD_8(oword, ...) \ 341 EF4_POPULATE_OWORD_9(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 342#define EF4_POPULATE_OWORD_7(oword, ...) \ 343 EF4_POPULATE_OWORD_8(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 344#define EF4_POPULATE_OWORD_6(oword, ...) \ 345 EF4_POPULATE_OWORD_7(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 346#define EF4_POPULATE_OWORD_5(oword, ...) \ 347 EF4_POPULATE_OWORD_6(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 348#define EF4_POPULATE_OWORD_4(oword, ...) \ 349 EF4_POPULATE_OWORD_5(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 350#define EF4_POPULATE_OWORD_3(oword, ...) \ 351 EF4_POPULATE_OWORD_4(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 352#define EF4_POPULATE_OWORD_2(oword, ...) \ 353 EF4_POPULATE_OWORD_3(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 354#define EF4_POPULATE_OWORD_1(oword, ...) \ 355 EF4_POPULATE_OWORD_2(oword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 356#define EF4_ZERO_OWORD(oword) \ 357 EF4_POPULATE_OWORD_1(oword, EF4_DUMMY_FIELD, 0) 358#define EF4_SET_OWORD(oword) \ 359 EF4_POPULATE_OWORD_4(oword, \ 360 EF4_DWORD_0, 0xffffffff, \ 361 EF4_DWORD_1, 0xffffffff, \ 362 EF4_DWORD_2, 0xffffffff, \ 363 EF4_DWORD_3, 0xffffffff) 364 365/* Populate a quadword field with various numbers of arguments */ 366#define EF4_POPULATE_QWORD_10 EF4_POPULATE_QWORD 367#define EF4_POPULATE_QWORD_9(qword, ...) \ 368 EF4_POPULATE_QWORD_10(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 369#define EF4_POPULATE_QWORD_8(qword, ...) \ 370 EF4_POPULATE_QWORD_9(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 371#define EF4_POPULATE_QWORD_7(qword, ...) \ 372 EF4_POPULATE_QWORD_8(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 373#define EF4_POPULATE_QWORD_6(qword, ...) \ 374 EF4_POPULATE_QWORD_7(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 375#define EF4_POPULATE_QWORD_5(qword, ...) \ 376 EF4_POPULATE_QWORD_6(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 377#define EF4_POPULATE_QWORD_4(qword, ...) \ 378 EF4_POPULATE_QWORD_5(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 379#define EF4_POPULATE_QWORD_3(qword, ...) \ 380 EF4_POPULATE_QWORD_4(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 381#define EF4_POPULATE_QWORD_2(qword, ...) \ 382 EF4_POPULATE_QWORD_3(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 383#define EF4_POPULATE_QWORD_1(qword, ...) \ 384 EF4_POPULATE_QWORD_2(qword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 385#define EF4_ZERO_QWORD(qword) \ 386 EF4_POPULATE_QWORD_1(qword, EF4_DUMMY_FIELD, 0) 387#define EF4_SET_QWORD(qword) \ 388 EF4_POPULATE_QWORD_2(qword, \ 389 EF4_DWORD_0, 0xffffffff, \ 390 EF4_DWORD_1, 0xffffffff) 391 392/* Populate a dword field with various numbers of arguments */ 393#define EF4_POPULATE_DWORD_10 EF4_POPULATE_DWORD 394#define EF4_POPULATE_DWORD_9(dword, ...) \ 395 EF4_POPULATE_DWORD_10(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 396#define EF4_POPULATE_DWORD_8(dword, ...) \ 397 EF4_POPULATE_DWORD_9(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 398#define EF4_POPULATE_DWORD_7(dword, ...) \ 399 EF4_POPULATE_DWORD_8(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 400#define EF4_POPULATE_DWORD_6(dword, ...) \ 401 EF4_POPULATE_DWORD_7(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 402#define EF4_POPULATE_DWORD_5(dword, ...) \ 403 EF4_POPULATE_DWORD_6(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 404#define EF4_POPULATE_DWORD_4(dword, ...) \ 405 EF4_POPULATE_DWORD_5(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 406#define EF4_POPULATE_DWORD_3(dword, ...) \ 407 EF4_POPULATE_DWORD_4(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 408#define EF4_POPULATE_DWORD_2(dword, ...) \ 409 EF4_POPULATE_DWORD_3(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 410#define EF4_POPULATE_DWORD_1(dword, ...) \ 411 EF4_POPULATE_DWORD_2(dword, EF4_DUMMY_FIELD, 0, __VA_ARGS__) 412#define EF4_ZERO_DWORD(dword) \ 413 EF4_POPULATE_DWORD_1(dword, EF4_DUMMY_FIELD, 0) 414#define EF4_SET_DWORD(dword) \ 415 EF4_POPULATE_DWORD_1(dword, EF4_DWORD_0, 0xffffffff) 416 417/* 418 * Modify a named field within an already-populated structure. Used 419 * for read-modify-write operations. 420 * 421 */ 422#define EF4_INVERT_OWORD(oword) do { \ 423 (oword).u64[0] = ~((oword).u64[0]); \ 424 (oword).u64[1] = ~((oword).u64[1]); \ 425 } while (0) 426 427#define EF4_AND_OWORD(oword, from, mask) \ 428 do { \ 429 (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \ 430 (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \ 431 } while (0) 432 433#define EF4_OR_OWORD(oword, from, mask) \ 434 do { \ 435 (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \ 436 (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \ 437 } while (0) 438 439#define EF4_INSERT64(min, max, low, high, value) \ 440 cpu_to_le64(EF4_INSERT_NATIVE(min, max, low, high, value)) 441 442#define EF4_INSERT32(min, max, low, high, value) \ 443 cpu_to_le32(EF4_INSERT_NATIVE(min, max, low, high, value)) 444 445#define EF4_INPLACE_MASK64(min, max, low, high) \ 446 EF4_INSERT64(min, max, low, high, EF4_MASK64((high) + 1 - (low))) 447 448#define EF4_INPLACE_MASK32(min, max, low, high) \ 449 EF4_INSERT32(min, max, low, high, EF4_MASK32((high) + 1 - (low))) 450 451#define EF4_SET_OWORD64(oword, low, high, value) do { \ 452 (oword).u64[0] = (((oword).u64[0] \ 453 & ~EF4_INPLACE_MASK64(0, 63, low, high)) \ 454 | EF4_INSERT64(0, 63, low, high, value)); \ 455 (oword).u64[1] = (((oword).u64[1] \ 456 & ~EF4_INPLACE_MASK64(64, 127, low, high)) \ 457 | EF4_INSERT64(64, 127, low, high, value)); \ 458 } while (0) 459 460#define EF4_SET_QWORD64(qword, low, high, value) do { \ 461 (qword).u64[0] = (((qword).u64[0] \ 462 & ~EF4_INPLACE_MASK64(0, 63, low, high)) \ 463 | EF4_INSERT64(0, 63, low, high, value)); \ 464 } while (0) 465 466#define EF4_SET_OWORD32(oword, low, high, value) do { \ 467 (oword).u32[0] = (((oword).u32[0] \ 468 & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ 469 | EF4_INSERT32(0, 31, low, high, value)); \ 470 (oword).u32[1] = (((oword).u32[1] \ 471 & ~EF4_INPLACE_MASK32(32, 63, low, high)) \ 472 | EF4_INSERT32(32, 63, low, high, value)); \ 473 (oword).u32[2] = (((oword).u32[2] \ 474 & ~EF4_INPLACE_MASK32(64, 95, low, high)) \ 475 | EF4_INSERT32(64, 95, low, high, value)); \ 476 (oword).u32[3] = (((oword).u32[3] \ 477 & ~EF4_INPLACE_MASK32(96, 127, low, high)) \ 478 | EF4_INSERT32(96, 127, low, high, value)); \ 479 } while (0) 480 481#define EF4_SET_QWORD32(qword, low, high, value) do { \ 482 (qword).u32[0] = (((qword).u32[0] \ 483 & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ 484 | EF4_INSERT32(0, 31, low, high, value)); \ 485 (qword).u32[1] = (((qword).u32[1] \ 486 & ~EF4_INPLACE_MASK32(32, 63, low, high)) \ 487 | EF4_INSERT32(32, 63, low, high, value)); \ 488 } while (0) 489 490#define EF4_SET_DWORD32(dword, low, high, value) do { \ 491 (dword).u32[0] = (((dword).u32[0] \ 492 & ~EF4_INPLACE_MASK32(0, 31, low, high)) \ 493 | EF4_INSERT32(0, 31, low, high, value)); \ 494 } while (0) 495 496#define EF4_SET_OWORD_FIELD64(oword, field, value) \ 497 EF4_SET_OWORD64(oword, EF4_LOW_BIT(field), \ 498 EF4_HIGH_BIT(field), value) 499 500#define EF4_SET_QWORD_FIELD64(qword, field, value) \ 501 EF4_SET_QWORD64(qword, EF4_LOW_BIT(field), \ 502 EF4_HIGH_BIT(field), value) 503 504#define EF4_SET_OWORD_FIELD32(oword, field, value) \ 505 EF4_SET_OWORD32(oword, EF4_LOW_BIT(field), \ 506 EF4_HIGH_BIT(field), value) 507 508#define EF4_SET_QWORD_FIELD32(qword, field, value) \ 509 EF4_SET_QWORD32(qword, EF4_LOW_BIT(field), \ 510 EF4_HIGH_BIT(field), value) 511 512#define EF4_SET_DWORD_FIELD(dword, field, value) \ 513 EF4_SET_DWORD32(dword, EF4_LOW_BIT(field), \ 514 EF4_HIGH_BIT(field), value) 515 516 517 518#if BITS_PER_LONG == 64 519#define EF4_SET_OWORD_FIELD EF4_SET_OWORD_FIELD64 520#define EF4_SET_QWORD_FIELD EF4_SET_QWORD_FIELD64 521#else 522#define EF4_SET_OWORD_FIELD EF4_SET_OWORD_FIELD32 523#define EF4_SET_QWORD_FIELD EF4_SET_QWORD_FIELD32 524#endif 525 526/* Used to avoid compiler warnings about shift range exceeding width 527 * of the data types when dma_addr_t is only 32 bits wide. 528 */ 529#define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t)) 530#define EF4_DMA_TYPE_WIDTH(width) \ 531 (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH) 532 533 534/* Static initialiser */ 535#define EF4_OWORD32(a, b, c, d) \ 536 { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \ 537 cpu_to_le32(c), cpu_to_le32(d) } } 538 539#endif /* EF4_BITFIELD_H */