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_BYTE_0_LBN 0 30 #define EFX_BYTE_0_WIDTH 8 31 #define EFX_WORD_0_LBN 0 32 #define EFX_WORD_0_WIDTH 16 33 #define EFX_WORD_1_LBN 16 34 #define EFX_WORD_1_WIDTH 16 35 #define EFX_DWORD_0_LBN 0 36 #define EFX_DWORD_0_WIDTH 32 37 #define EFX_DWORD_1_LBN 32 38 #define EFX_DWORD_1_WIDTH 32 39 #define EFX_DWORD_2_LBN 64 40 #define EFX_DWORD_2_WIDTH 32 41 #define EFX_DWORD_3_LBN 96 42 #define EFX_DWORD_3_WIDTH 32 43 #define EFX_QWORD_0_LBN 0 44 #define EFX_QWORD_0_WIDTH 64 45 46 /* Specified attribute (e.g. LBN) of the specified field */ 47 #define EFX_VAL(field, attribute) field ## _ ## attribute 48 /* Low bit number of the specified field */ 49 #define EFX_LOW_BIT(field) EFX_VAL(field, LBN) 50 /* Bit width of the specified field */ 51 #define EFX_WIDTH(field) EFX_VAL(field, WIDTH) 52 /* High bit number of the specified field */ 53 #define EFX_HIGH_BIT(field) (EFX_LOW_BIT(field) + EFX_WIDTH(field) - 1) 54 /* Mask equal in width to the specified field. 55 * 56 * For example, a field with width 5 would have a mask of 0x1f. 57 * 58 * The maximum width mask that can be generated is 64 bits. 59 */ 60 #define EFX_MASK64(width) \ 61 ((width) == 64 ? ~((u64) 0) : \ 62 (((((u64) 1) << (width))) - 1)) 63 64 /* Mask equal in width to the specified field. 65 * 66 * For example, a field with width 5 would have a mask of 0x1f. 67 * 68 * The maximum width mask that can be generated is 32 bits. Use 69 * EFX_MASK64 for higher width fields. 70 */ 71 #define EFX_MASK32(width) \ 72 ((width) == 32 ? ~((u32) 0) : \ 73 (((((u32) 1) << (width))) - 1)) 74 75 /* A doubleword (i.e. 4 byte) datatype - little-endian in HW */ 76 typedef union efx_dword { 77 __le32 u32[1]; 78 } efx_dword_t; 79 80 /* A quadword (i.e. 8 byte) datatype - little-endian in HW */ 81 typedef union efx_qword { 82 __le64 u64[1]; 83 __le32 u32[2]; 84 efx_dword_t dword[2]; 85 } efx_qword_t; 86 87 /* An octword (eight-word, i.e. 16 byte) datatype - little-endian in HW */ 88 typedef union efx_oword { 89 __le64 u64[2]; 90 efx_qword_t qword[2]; 91 __le32 u32[4]; 92 efx_dword_t dword[4]; 93 } efx_oword_t; 94 95 /* Format string and value expanders for printk */ 96 #define EFX_DWORD_FMT "%08x" 97 #define EFX_QWORD_FMT "%08x:%08x" 98 #define EFX_OWORD_FMT "%08x:%08x:%08x:%08x" 99 #define EFX_DWORD_VAL(dword) \ 100 ((unsigned int) le32_to_cpu((dword).u32[0])) 101 #define EFX_QWORD_VAL(qword) \ 102 ((unsigned int) le32_to_cpu((qword).u32[1])), \ 103 ((unsigned int) le32_to_cpu((qword).u32[0])) 104 #define EFX_OWORD_VAL(oword) \ 105 ((unsigned int) le32_to_cpu((oword).u32[3])), \ 106 ((unsigned int) le32_to_cpu((oword).u32[2])), \ 107 ((unsigned int) le32_to_cpu((oword).u32[1])), \ 108 ((unsigned int) le32_to_cpu((oword).u32[0])) 109 110 /* 111 * Extract bit field portion [low,high) from the native-endian element 112 * which contains bits [min,max). 113 * 114 * For example, suppose "element" represents the high 32 bits of a 115 * 64-bit value, and we wish to extract the bits belonging to the bit 116 * field occupying bits 28-45 of this 64-bit value. 117 * 118 * Then EFX_EXTRACT ( element, 32, 63, 28, 45 ) would give 119 * 120 * ( element ) << 4 121 * 122 * The result will contain the relevant bits filled in in the range 123 * [0,high-low), with garbage in bits [high-low+1,...). 124 */ 125 #define EFX_EXTRACT_NATIVE(native_element, min, max, low, high) \ 126 ((low) > (max) || (high) < (min) ? 0 : \ 127 (low) > (min) ? \ 128 (native_element) >> ((low) - (min)) : \ 129 (native_element) << ((min) - (low))) 130 131 /* 132 * Extract bit field portion [low,high) from the 64-bit little-endian 133 * element which contains bits [min,max) 134 */ 135 #define EFX_EXTRACT64(element, min, max, low, high) \ 136 EFX_EXTRACT_NATIVE(le64_to_cpu(element), min, max, low, high) 137 138 /* 139 * Extract bit field portion [low,high) from the 32-bit little-endian 140 * element which contains bits [min,max) 141 */ 142 #define EFX_EXTRACT32(element, min, max, low, high) \ 143 EFX_EXTRACT_NATIVE(le32_to_cpu(element), min, max, low, high) 144 145 #define EFX_EXTRACT_OWORD64(oword, low, high) \ 146 ((EFX_EXTRACT64((oword).u64[0], 0, 63, low, high) | \ 147 EFX_EXTRACT64((oword).u64[1], 64, 127, low, high)) & \ 148 EFX_MASK64((high) + 1 - (low))) 149 150 #define EFX_EXTRACT_QWORD64(qword, low, high) \ 151 (EFX_EXTRACT64((qword).u64[0], 0, 63, low, high) & \ 152 EFX_MASK64((high) + 1 - (low))) 153 154 #define EFX_EXTRACT_OWORD32(oword, low, high) \ 155 ((EFX_EXTRACT32((oword).u32[0], 0, 31, low, high) | \ 156 EFX_EXTRACT32((oword).u32[1], 32, 63, low, high) | \ 157 EFX_EXTRACT32((oword).u32[2], 64, 95, low, high) | \ 158 EFX_EXTRACT32((oword).u32[3], 96, 127, low, high)) & \ 159 EFX_MASK32((high) + 1 - (low))) 160 161 #define EFX_EXTRACT_QWORD32(qword, low, high) \ 162 ((EFX_EXTRACT32((qword).u32[0], 0, 31, low, high) | \ 163 EFX_EXTRACT32((qword).u32[1], 32, 63, low, high)) & \ 164 EFX_MASK32((high) + 1 - (low))) 165 166 #define EFX_EXTRACT_DWORD(dword, low, high) \ 167 (EFX_EXTRACT32((dword).u32[0], 0, 31, low, high) & \ 168 EFX_MASK32((high) + 1 - (low))) 169 170 #define EFX_OWORD_FIELD64(oword, field) \ 171 EFX_EXTRACT_OWORD64(oword, EFX_LOW_BIT(field), \ 172 EFX_HIGH_BIT(field)) 173 174 #define EFX_QWORD_FIELD64(qword, field) \ 175 EFX_EXTRACT_QWORD64(qword, EFX_LOW_BIT(field), \ 176 EFX_HIGH_BIT(field)) 177 178 #define EFX_OWORD_FIELD32(oword, field) \ 179 EFX_EXTRACT_OWORD32(oword, EFX_LOW_BIT(field), \ 180 EFX_HIGH_BIT(field)) 181 182 #define EFX_QWORD_FIELD32(qword, field) \ 183 EFX_EXTRACT_QWORD32(qword, EFX_LOW_BIT(field), \ 184 EFX_HIGH_BIT(field)) 185 186 #define EFX_DWORD_FIELD(dword, field) \ 187 EFX_EXTRACT_DWORD(dword, EFX_LOW_BIT(field), \ 188 EFX_HIGH_BIT(field)) 189 190 #define EFX_OWORD_IS_ZERO64(oword) \ 191 (((oword).u64[0] | (oword).u64[1]) == (__force __le64) 0) 192 193 #define EFX_QWORD_IS_ZERO64(qword) \ 194 (((qword).u64[0]) == (__force __le64) 0) 195 196 #define EFX_OWORD_IS_ZERO32(oword) \ 197 (((oword).u32[0] | (oword).u32[1] | (oword).u32[2] | (oword).u32[3]) \ 198 == (__force __le32) 0) 199 200 #define EFX_QWORD_IS_ZERO32(qword) \ 201 (((qword).u32[0] | (qword).u32[1]) == (__force __le32) 0) 202 203 #define EFX_DWORD_IS_ZERO(dword) \ 204 (((dword).u32[0]) == (__force __le32) 0) 205 206 #define EFX_OWORD_IS_ALL_ONES64(oword) \ 207 (((oword).u64[0] & (oword).u64[1]) == ~((__force __le64) 0)) 208 209 #define EFX_QWORD_IS_ALL_ONES64(qword) \ 210 ((qword).u64[0] == ~((__force __le64) 0)) 211 212 #define EFX_OWORD_IS_ALL_ONES32(oword) \ 213 (((oword).u32[0] & (oword).u32[1] & (oword).u32[2] & (oword).u32[3]) \ 214 == ~((__force __le32) 0)) 215 216 #define EFX_QWORD_IS_ALL_ONES32(qword) \ 217 (((qword).u32[0] & (qword).u32[1]) == ~((__force __le32) 0)) 218 219 #define EFX_DWORD_IS_ALL_ONES(dword) \ 220 ((dword).u32[0] == ~((__force __le32) 0)) 221 222 #if BITS_PER_LONG == 64 223 #define EFX_OWORD_FIELD EFX_OWORD_FIELD64 224 #define EFX_QWORD_FIELD EFX_QWORD_FIELD64 225 #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO64 226 #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO64 227 #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES64 228 #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES64 229 #else 230 #define EFX_OWORD_FIELD EFX_OWORD_FIELD32 231 #define EFX_QWORD_FIELD EFX_QWORD_FIELD32 232 #define EFX_OWORD_IS_ZERO EFX_OWORD_IS_ZERO32 233 #define EFX_QWORD_IS_ZERO EFX_QWORD_IS_ZERO32 234 #define EFX_OWORD_IS_ALL_ONES EFX_OWORD_IS_ALL_ONES32 235 #define EFX_QWORD_IS_ALL_ONES EFX_QWORD_IS_ALL_ONES32 236 #endif 237 238 /* 239 * Construct bit field portion 240 * 241 * Creates the portion of the bit field [low,high) that lies within 242 * the range [min,max). 243 */ 244 #define EFX_INSERT_NATIVE64(min, max, low, high, value) \ 245 (((low > max) || (high < min)) ? 0 : \ 246 ((low > min) ? \ 247 (((u64) (value)) << (low - min)) : \ 248 (((u64) (value)) >> (min - low)))) 249 250 #define EFX_INSERT_NATIVE32(min, max, low, high, value) \ 251 (((low > max) || (high < min)) ? 0 : \ 252 ((low > min) ? \ 253 (((u32) (value)) << (low - min)) : \ 254 (((u32) (value)) >> (min - low)))) 255 256 #define EFX_INSERT_NATIVE(min, max, low, high, value) \ 257 ((((max - min) >= 32) || ((high - low) >= 32)) ? \ 258 EFX_INSERT_NATIVE64(min, max, low, high, value) : \ 259 EFX_INSERT_NATIVE32(min, max, low, high, value)) 260 261 /* 262 * Construct bit field portion 263 * 264 * Creates the portion of the named bit field that lies within the 265 * range [min,max). 266 */ 267 #define EFX_INSERT_FIELD_NATIVE(min, max, field, value) \ 268 EFX_INSERT_NATIVE(min, max, EFX_LOW_BIT(field), \ 269 EFX_HIGH_BIT(field), value) 270 271 /* 272 * Construct bit field 273 * 274 * Creates the portion of the named bit fields that lie within the 275 * range [min,max). 276 */ 277 #define EFX_INSERT_FIELDS_NATIVE(min, max, \ 278 field1, value1, \ 279 field2, value2, \ 280 field3, value3, \ 281 field4, value4, \ 282 field5, value5, \ 283 field6, value6, \ 284 field7, value7, \ 285 field8, value8, \ 286 field9, value9, \ 287 field10, value10, \ 288 field11, value11, \ 289 field12, value12, \ 290 field13, value13, \ 291 field14, value14, \ 292 field15, value15, \ 293 field16, value16, \ 294 field17, value17, \ 295 field18, value18, \ 296 field19, value19) \ 297 (EFX_INSERT_FIELD_NATIVE((min), (max), field1, (value1)) | \ 298 EFX_INSERT_FIELD_NATIVE((min), (max), field2, (value2)) | \ 299 EFX_INSERT_FIELD_NATIVE((min), (max), field3, (value3)) | \ 300 EFX_INSERT_FIELD_NATIVE((min), (max), field4, (value4)) | \ 301 EFX_INSERT_FIELD_NATIVE((min), (max), field5, (value5)) | \ 302 EFX_INSERT_FIELD_NATIVE((min), (max), field6, (value6)) | \ 303 EFX_INSERT_FIELD_NATIVE((min), (max), field7, (value7)) | \ 304 EFX_INSERT_FIELD_NATIVE((min), (max), field8, (value8)) | \ 305 EFX_INSERT_FIELD_NATIVE((min), (max), field9, (value9)) | \ 306 EFX_INSERT_FIELD_NATIVE((min), (max), field10, (value10)) | \ 307 EFX_INSERT_FIELD_NATIVE((min), (max), field11, (value11)) | \ 308 EFX_INSERT_FIELD_NATIVE((min), (max), field12, (value12)) | \ 309 EFX_INSERT_FIELD_NATIVE((min), (max), field13, (value13)) | \ 310 EFX_INSERT_FIELD_NATIVE((min), (max), field14, (value14)) | \ 311 EFX_INSERT_FIELD_NATIVE((min), (max), field15, (value15)) | \ 312 EFX_INSERT_FIELD_NATIVE((min), (max), field16, (value16)) | \ 313 EFX_INSERT_FIELD_NATIVE((min), (max), field17, (value17)) | \ 314 EFX_INSERT_FIELD_NATIVE((min), (max), field18, (value18)) | \ 315 EFX_INSERT_FIELD_NATIVE((min), (max), field19, (value19))) 316 317 #define EFX_INSERT_FIELDS64(...) \ 318 cpu_to_le64(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__)) 319 320 #define EFX_INSERT_FIELDS32(...) \ 321 cpu_to_le32(EFX_INSERT_FIELDS_NATIVE(__VA_ARGS__)) 322 323 #define EFX_POPULATE_OWORD64(oword, ...) do { \ 324 (oword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ 325 (oword).u64[1] = EFX_INSERT_FIELDS64(64, 127, __VA_ARGS__); \ 326 } while (0) 327 328 #define EFX_POPULATE_QWORD64(qword, ...) do { \ 329 (qword).u64[0] = EFX_INSERT_FIELDS64(0, 63, __VA_ARGS__); \ 330 } while (0) 331 332 #define EFX_POPULATE_OWORD32(oword, ...) do { \ 333 (oword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ 334 (oword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ 335 (oword).u32[2] = EFX_INSERT_FIELDS32(64, 95, __VA_ARGS__); \ 336 (oword).u32[3] = EFX_INSERT_FIELDS32(96, 127, __VA_ARGS__); \ 337 } while (0) 338 339 #define EFX_POPULATE_QWORD32(qword, ...) do { \ 340 (qword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ 341 (qword).u32[1] = EFX_INSERT_FIELDS32(32, 63, __VA_ARGS__); \ 342 } while (0) 343 344 #define EFX_POPULATE_DWORD(dword, ...) do { \ 345 (dword).u32[0] = EFX_INSERT_FIELDS32(0, 31, __VA_ARGS__); \ 346 } while (0) 347 348 #if BITS_PER_LONG == 64 349 #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD64 350 #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD64 351 #else 352 #define EFX_POPULATE_OWORD EFX_POPULATE_OWORD32 353 #define EFX_POPULATE_QWORD EFX_POPULATE_QWORD32 354 #endif 355 356 /* Populate an octword field with various numbers of arguments */ 357 #define EFX_POPULATE_OWORD_19 EFX_POPULATE_OWORD 358 #define EFX_POPULATE_OWORD_18(oword, ...) \ 359 EFX_POPULATE_OWORD_19(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 360 #define EFX_POPULATE_OWORD_17(oword, ...) \ 361 EFX_POPULATE_OWORD_18(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 362 #define EFX_POPULATE_OWORD_16(oword, ...) \ 363 EFX_POPULATE_OWORD_17(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 364 #define EFX_POPULATE_OWORD_15(oword, ...) \ 365 EFX_POPULATE_OWORD_16(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 366 #define EFX_POPULATE_OWORD_14(oword, ...) \ 367 EFX_POPULATE_OWORD_15(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 368 #define EFX_POPULATE_OWORD_13(oword, ...) \ 369 EFX_POPULATE_OWORD_14(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 370 #define EFX_POPULATE_OWORD_12(oword, ...) \ 371 EFX_POPULATE_OWORD_13(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 372 #define EFX_POPULATE_OWORD_11(oword, ...) \ 373 EFX_POPULATE_OWORD_12(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 374 #define EFX_POPULATE_OWORD_10(oword, ...) \ 375 EFX_POPULATE_OWORD_11(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 376 #define EFX_POPULATE_OWORD_9(oword, ...) \ 377 EFX_POPULATE_OWORD_10(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 378 #define EFX_POPULATE_OWORD_8(oword, ...) \ 379 EFX_POPULATE_OWORD_9(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 380 #define EFX_POPULATE_OWORD_7(oword, ...) \ 381 EFX_POPULATE_OWORD_8(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 382 #define EFX_POPULATE_OWORD_6(oword, ...) \ 383 EFX_POPULATE_OWORD_7(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 384 #define EFX_POPULATE_OWORD_5(oword, ...) \ 385 EFX_POPULATE_OWORD_6(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 386 #define EFX_POPULATE_OWORD_4(oword, ...) \ 387 EFX_POPULATE_OWORD_5(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 388 #define EFX_POPULATE_OWORD_3(oword, ...) \ 389 EFX_POPULATE_OWORD_4(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 390 #define EFX_POPULATE_OWORD_2(oword, ...) \ 391 EFX_POPULATE_OWORD_3(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 392 #define EFX_POPULATE_OWORD_1(oword, ...) \ 393 EFX_POPULATE_OWORD_2(oword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 394 #define EFX_ZERO_OWORD(oword) \ 395 EFX_POPULATE_OWORD_1(oword, EFX_DUMMY_FIELD, 0) 396 #define EFX_SET_OWORD(oword) \ 397 EFX_POPULATE_OWORD_4(oword, \ 398 EFX_DWORD_0, 0xffffffff, \ 399 EFX_DWORD_1, 0xffffffff, \ 400 EFX_DWORD_2, 0xffffffff, \ 401 EFX_DWORD_3, 0xffffffff) 402 403 /* Populate a quadword field with various numbers of arguments */ 404 #define EFX_POPULATE_QWORD_19 EFX_POPULATE_QWORD 405 #define EFX_POPULATE_QWORD_18(qword, ...) \ 406 EFX_POPULATE_QWORD_19(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 407 #define EFX_POPULATE_QWORD_17(qword, ...) \ 408 EFX_POPULATE_QWORD_18(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 409 #define EFX_POPULATE_QWORD_16(qword, ...) \ 410 EFX_POPULATE_QWORD_17(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 411 #define EFX_POPULATE_QWORD_15(qword, ...) \ 412 EFX_POPULATE_QWORD_16(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 413 #define EFX_POPULATE_QWORD_14(qword, ...) \ 414 EFX_POPULATE_QWORD_15(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 415 #define EFX_POPULATE_QWORD_13(qword, ...) \ 416 EFX_POPULATE_QWORD_14(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 417 #define EFX_POPULATE_QWORD_12(qword, ...) \ 418 EFX_POPULATE_QWORD_13(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 419 #define EFX_POPULATE_QWORD_11(qword, ...) \ 420 EFX_POPULATE_QWORD_12(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 421 #define EFX_POPULATE_QWORD_10(qword, ...) \ 422 EFX_POPULATE_QWORD_11(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 423 #define EFX_POPULATE_QWORD_9(qword, ...) \ 424 EFX_POPULATE_QWORD_10(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 425 #define EFX_POPULATE_QWORD_8(qword, ...) \ 426 EFX_POPULATE_QWORD_9(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 427 #define EFX_POPULATE_QWORD_7(qword, ...) \ 428 EFX_POPULATE_QWORD_8(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 429 #define EFX_POPULATE_QWORD_6(qword, ...) \ 430 EFX_POPULATE_QWORD_7(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 431 #define EFX_POPULATE_QWORD_5(qword, ...) \ 432 EFX_POPULATE_QWORD_6(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 433 #define EFX_POPULATE_QWORD_4(qword, ...) \ 434 EFX_POPULATE_QWORD_5(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 435 #define EFX_POPULATE_QWORD_3(qword, ...) \ 436 EFX_POPULATE_QWORD_4(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 437 #define EFX_POPULATE_QWORD_2(qword, ...) \ 438 EFX_POPULATE_QWORD_3(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 439 #define EFX_POPULATE_QWORD_1(qword, ...) \ 440 EFX_POPULATE_QWORD_2(qword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 441 #define EFX_ZERO_QWORD(qword) \ 442 EFX_POPULATE_QWORD_1(qword, EFX_DUMMY_FIELD, 0) 443 #define EFX_SET_QWORD(qword) \ 444 EFX_POPULATE_QWORD_2(qword, \ 445 EFX_DWORD_0, 0xffffffff, \ 446 EFX_DWORD_1, 0xffffffff) 447 448 /* Populate a dword field with various numbers of arguments */ 449 #define EFX_POPULATE_DWORD_19 EFX_POPULATE_DWORD 450 #define EFX_POPULATE_DWORD_18(dword, ...) \ 451 EFX_POPULATE_DWORD_19(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 452 #define EFX_POPULATE_DWORD_17(dword, ...) \ 453 EFX_POPULATE_DWORD_18(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 454 #define EFX_POPULATE_DWORD_16(dword, ...) \ 455 EFX_POPULATE_DWORD_17(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 456 #define EFX_POPULATE_DWORD_15(dword, ...) \ 457 EFX_POPULATE_DWORD_16(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 458 #define EFX_POPULATE_DWORD_14(dword, ...) \ 459 EFX_POPULATE_DWORD_15(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 460 #define EFX_POPULATE_DWORD_13(dword, ...) \ 461 EFX_POPULATE_DWORD_14(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 462 #define EFX_POPULATE_DWORD_12(dword, ...) \ 463 EFX_POPULATE_DWORD_13(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 464 #define EFX_POPULATE_DWORD_11(dword, ...) \ 465 EFX_POPULATE_DWORD_12(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 466 #define EFX_POPULATE_DWORD_10(dword, ...) \ 467 EFX_POPULATE_DWORD_11(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 468 #define EFX_POPULATE_DWORD_9(dword, ...) \ 469 EFX_POPULATE_DWORD_10(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 470 #define EFX_POPULATE_DWORD_8(dword, ...) \ 471 EFX_POPULATE_DWORD_9(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 472 #define EFX_POPULATE_DWORD_7(dword, ...) \ 473 EFX_POPULATE_DWORD_8(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 474 #define EFX_POPULATE_DWORD_6(dword, ...) \ 475 EFX_POPULATE_DWORD_7(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 476 #define EFX_POPULATE_DWORD_5(dword, ...) \ 477 EFX_POPULATE_DWORD_6(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 478 #define EFX_POPULATE_DWORD_4(dword, ...) \ 479 EFX_POPULATE_DWORD_5(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 480 #define EFX_POPULATE_DWORD_3(dword, ...) \ 481 EFX_POPULATE_DWORD_4(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 482 #define EFX_POPULATE_DWORD_2(dword, ...) \ 483 EFX_POPULATE_DWORD_3(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 484 #define EFX_POPULATE_DWORD_1(dword, ...) \ 485 EFX_POPULATE_DWORD_2(dword, EFX_DUMMY_FIELD, 0, __VA_ARGS__) 486 #define EFX_ZERO_DWORD(dword) \ 487 EFX_POPULATE_DWORD_1(dword, EFX_DUMMY_FIELD, 0) 488 #define EFX_SET_DWORD(dword) \ 489 EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xffffffff) 490 491 /* 492 * Modify a named field within an already-populated structure. Used 493 * for read-modify-write operations. 494 * 495 */ 496 #define EFX_INVERT_OWORD(oword) do { \ 497 (oword).u64[0] = ~((oword).u64[0]); \ 498 (oword).u64[1] = ~((oword).u64[1]); \ 499 } while (0) 500 501 #define EFX_AND_OWORD(oword, from, mask) \ 502 do { \ 503 (oword).u64[0] = (from).u64[0] & (mask).u64[0]; \ 504 (oword).u64[1] = (from).u64[1] & (mask).u64[1]; \ 505 } while (0) 506 507 #define EFX_AND_QWORD(qword, from, mask) \ 508 (qword).u64[0] = (from).u64[0] & (mask).u64[0] 509 510 #define EFX_OR_OWORD(oword, from, mask) \ 511 do { \ 512 (oword).u64[0] = (from).u64[0] | (mask).u64[0]; \ 513 (oword).u64[1] = (from).u64[1] | (mask).u64[1]; \ 514 } while (0) 515 516 #define EFX_INSERT64(min, max, low, high, value) \ 517 cpu_to_le64(EFX_INSERT_NATIVE(min, max, low, high, value)) 518 519 #define EFX_INSERT32(min, max, low, high, value) \ 520 cpu_to_le32(EFX_INSERT_NATIVE(min, max, low, high, value)) 521 522 #define EFX_INPLACE_MASK64(min, max, low, high) \ 523 EFX_INSERT64(min, max, low, high, EFX_MASK64((high) + 1 - (low))) 524 525 #define EFX_INPLACE_MASK32(min, max, low, high) \ 526 EFX_INSERT32(min, max, low, high, EFX_MASK32((high) + 1 - (low))) 527 528 #define EFX_SET_OWORD64(oword, low, high, value) do { \ 529 (oword).u64[0] = (((oword).u64[0] \ 530 & ~EFX_INPLACE_MASK64(0, 63, low, high)) \ 531 | EFX_INSERT64(0, 63, low, high, value)); \ 532 (oword).u64[1] = (((oword).u64[1] \ 533 & ~EFX_INPLACE_MASK64(64, 127, low, high)) \ 534 | EFX_INSERT64(64, 127, low, high, value)); \ 535 } while (0) 536 537 #define EFX_SET_QWORD64(qword, low, high, value) do { \ 538 (qword).u64[0] = (((qword).u64[0] \ 539 & ~EFX_INPLACE_MASK64(0, 63, low, high)) \ 540 | EFX_INSERT64(0, 63, low, high, value)); \ 541 } while (0) 542 543 #define EFX_SET_OWORD32(oword, low, high, value) do { \ 544 (oword).u32[0] = (((oword).u32[0] \ 545 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ 546 | EFX_INSERT32(0, 31, low, high, value)); \ 547 (oword).u32[1] = (((oword).u32[1] \ 548 & ~EFX_INPLACE_MASK32(32, 63, low, high)) \ 549 | EFX_INSERT32(32, 63, low, high, value)); \ 550 (oword).u32[2] = (((oword).u32[2] \ 551 & ~EFX_INPLACE_MASK32(64, 95, low, high)) \ 552 | EFX_INSERT32(64, 95, low, high, value)); \ 553 (oword).u32[3] = (((oword).u32[3] \ 554 & ~EFX_INPLACE_MASK32(96, 127, low, high)) \ 555 | EFX_INSERT32(96, 127, low, high, value)); \ 556 } while (0) 557 558 #define EFX_SET_QWORD32(qword, low, high, value) do { \ 559 (qword).u32[0] = (((qword).u32[0] \ 560 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ 561 | EFX_INSERT32(0, 31, low, high, value)); \ 562 (qword).u32[1] = (((qword).u32[1] \ 563 & ~EFX_INPLACE_MASK32(32, 63, low, high)) \ 564 | EFX_INSERT32(32, 63, low, high, value)); \ 565 } while (0) 566 567 #define EFX_SET_DWORD32(dword, low, high, value) do { \ 568 (dword).u32[0] = (((dword).u32[0] \ 569 & ~EFX_INPLACE_MASK32(0, 31, low, high)) \ 570 | EFX_INSERT32(0, 31, low, high, value)); \ 571 } while (0) 572 573 #define EFX_SET_OWORD_FIELD64(oword, field, value) \ 574 EFX_SET_OWORD64(oword, EFX_LOW_BIT(field), \ 575 EFX_HIGH_BIT(field), value) 576 577 #define EFX_SET_QWORD_FIELD64(qword, field, value) \ 578 EFX_SET_QWORD64(qword, EFX_LOW_BIT(field), \ 579 EFX_HIGH_BIT(field), value) 580 581 #define EFX_SET_OWORD_FIELD32(oword, field, value) \ 582 EFX_SET_OWORD32(oword, EFX_LOW_BIT(field), \ 583 EFX_HIGH_BIT(field), value) 584 585 #define EFX_SET_QWORD_FIELD32(qword, field, value) \ 586 EFX_SET_QWORD32(qword, EFX_LOW_BIT(field), \ 587 EFX_HIGH_BIT(field), value) 588 589 #define EFX_SET_DWORD_FIELD(dword, field, value) \ 590 EFX_SET_DWORD32(dword, EFX_LOW_BIT(field), \ 591 EFX_HIGH_BIT(field), value) 592 593 594 595 #if BITS_PER_LONG == 64 596 #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD64 597 #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD64 598 #else 599 #define EFX_SET_OWORD_FIELD EFX_SET_OWORD_FIELD32 600 #define EFX_SET_QWORD_FIELD EFX_SET_QWORD_FIELD32 601 #endif 602 603 /* Used to avoid compiler warnings about shift range exceeding width 604 * of the data types when dma_addr_t is only 32 bits wide. 605 */ 606 #define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t)) 607 #define EFX_DMA_TYPE_WIDTH(width) \ 608 (((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH) 609 610 611 /* Static initialiser */ 612 #define EFX_OWORD32(a, b, c, d) \ 613 { .u32 = { cpu_to_le32(a), cpu_to_le32(b), \ 614 cpu_to_le32(c), cpu_to_le32(d) } } 615 616 #endif /* EFX_BITFIELD_H */ 617