include/asm-generic/xor.h

   1 /*
   2  * include/asm-generic/xor.h
   3  *
   4  * Generic optimized RAID-5 checksumming functions.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2, or (at your option)
   9  * any later version.
  10  *
  11  * You should have received a copy of the GNU General Public License
  12  * (for example /usr/src/linux/COPYING); if not, write to the Free
  13  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  14  */
  15
  16 #include <asm/processor.h>
  17
  18 static void
  19 xor_8regs_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
  20 {
  21         long lines = bytes / (sizeof (long)) / 8;
  22
  23         do {
  24                 p1[0] ^= p2[0];
  25                 p1[1] ^= p2[1];
  26                 p1[2] ^= p2[2];
  27                 p1[3] ^= p2[3];
  28                 p1[4] ^= p2[4];
  29                 p1[5] ^= p2[5];
  30                 p1[6] ^= p2[6];
  31                 p1[7] ^= p2[7];
  32                 p1 += 8;
  33                 p2 += 8;
  34         } while (--lines > 0);
  35 }
  36
  37 static void
  38 xor_8regs_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
  39             unsigned long *p3)
  40 {
  41         long lines = bytes / (sizeof (long)) / 8;
  42
  43         do {
  44                 p1[0] ^= p2[0] ^ p3[0];
  45                 p1[1] ^= p2[1] ^ p3[1];
  46                 p1[2] ^= p2[2] ^ p3[2];
  47                 p1[3] ^= p2[3] ^ p3[3];
  48                 p1[4] ^= p2[4] ^ p3[4];
  49                 p1[5] ^= p2[5] ^ p3[5];
  50                 p1[6] ^= p2[6] ^ p3[6];
  51                 p1[7] ^= p2[7] ^ p3[7];
  52                 p1 += 8;
  53                 p2 += 8;
  54                 p3 += 8;
  55         } while (--lines > 0);
  56 }
  57
  58 static void
  59 xor_8regs_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
  60             unsigned long *p3, unsigned long *p4)
  61 {
  62         long lines = bytes / (sizeof (long)) / 8;
  63
  64         do {
  65                 p1[0] ^= p2[0] ^ p3[0] ^ p4[0];
  66                 p1[1] ^= p2[1] ^ p3[1] ^ p4[1];
  67                 p1[2] ^= p2[2] ^ p3[2] ^ p4[2];
  68                 p1[3] ^= p2[3] ^ p3[3] ^ p4[3];
  69                 p1[4] ^= p2[4] ^ p3[4] ^ p4[4];
  70                 p1[5] ^= p2[5] ^ p3[5] ^ p4[5];
  71                 p1[6] ^= p2[6] ^ p3[6] ^ p4[6];
  72                 p1[7] ^= p2[7] ^ p3[7] ^ p4[7];
  73                 p1 += 8;
  74                 p2 += 8;
  75                 p3 += 8;
  76                 p4 += 8;
  77         } while (--lines > 0);
  78 }
  79
  80 static void
  81 xor_8regs_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
  82             unsigned long *p3, unsigned long *p4, unsigned long *p5)
  83 {
  84         long lines = bytes / (sizeof (long)) / 8;
  85
  86         do {
  87                 p1[0] ^= p2[0] ^ p3[0] ^ p4[0] ^ p5[0];
  88                 p1[1] ^= p2[1] ^ p3[1] ^ p4[1] ^ p5[1];
  89                 p1[2] ^= p2[2] ^ p3[2] ^ p4[2] ^ p5[2];
  90                 p1[3] ^= p2[3] ^ p3[3] ^ p4[3] ^ p5[3];
  91                 p1[4] ^= p2[4] ^ p3[4] ^ p4[4] ^ p5[4];
  92                 p1[5] ^= p2[5] ^ p3[5] ^ p4[5] ^ p5[5];
  93                 p1[6] ^= p2[6] ^ p3[6] ^ p4[6] ^ p5[6];
  94                 p1[7] ^= p2[7] ^ p3[7] ^ p4[7] ^ p5[7];
  95                 p1 += 8;
  96                 p2 += 8;
  97                 p3 += 8;
  98                 p4 += 8;
  99                 p5 += 8;
 100         } while (--lines > 0);
 101 }
 102
 103 static void
 104 xor_32regs_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
 105 {
 106         long lines = bytes / (sizeof (long)) / 8;
 107
 108         do {
 109                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 110                 d0 = p1[0];     /* Pull the stuff into registers        */
 111                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 112                 d2 = p1[2];
 113                 d3 = p1[3];
 114                 d4 = p1[4];
 115                 d5 = p1[5];
 116                 d6 = p1[6];
 117                 d7 = p1[7];
 118                 d0 ^= p2[0];
 119                 d1 ^= p2[1];
 120                 d2 ^= p2[2];
 121                 d3 ^= p2[3];
 122                 d4 ^= p2[4];
 123                 d5 ^= p2[5];
 124                 d6 ^= p2[6];
 125                 d7 ^= p2[7];
 126                 p1[0] = d0;     /* Store the result (in bursts)         */
 127                 p1[1] = d1;
 128                 p1[2] = d2;
 129                 p1[3] = d3;
 130                 p1[4] = d4;
 131                 p1[5] = d5;
 132                 p1[6] = d6;
 133                 p1[7] = d7;
 134                 p1 += 8;
 135                 p2 += 8;
 136         } while (--lines > 0);
 137 }
 138
 139 static void
 140 xor_32regs_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 141             unsigned long *p3)
 142 {
 143         long lines = bytes / (sizeof (long)) / 8;
 144
 145         do {
 146                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 147                 d0 = p1[0];     /* Pull the stuff into registers        */
 148                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 149                 d2 = p1[2];
 150                 d3 = p1[3];
 151                 d4 = p1[4];
 152                 d5 = p1[5];
 153                 d6 = p1[6];
 154                 d7 = p1[7];
 155                 d0 ^= p2[0];
 156                 d1 ^= p2[1];
 157                 d2 ^= p2[2];
 158                 d3 ^= p2[3];
 159                 d4 ^= p2[4];
 160                 d5 ^= p2[5];
 161                 d6 ^= p2[6];
 162                 d7 ^= p2[7];
 163                 d0 ^= p3[0];
 164                 d1 ^= p3[1];
 165                 d2 ^= p3[2];
 166                 d3 ^= p3[3];
 167                 d4 ^= p3[4];
 168                 d5 ^= p3[5];
 169                 d6 ^= p3[6];
 170                 d7 ^= p3[7];
 171                 p1[0] = d0;     /* Store the result (in bursts)         */
 172                 p1[1] = d1;
 173                 p1[2] = d2;
 174                 p1[3] = d3;
 175                 p1[4] = d4;
 176                 p1[5] = d5;
 177                 p1[6] = d6;
 178                 p1[7] = d7;
 179                 p1 += 8;
 180                 p2 += 8;
 181                 p3 += 8;
 182         } while (--lines > 0);
 183 }
 184
 185 static void
 186 xor_32regs_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 187             unsigned long *p3, unsigned long *p4)
 188 {
 189         long lines = bytes / (sizeof (long)) / 8;
 190
 191         do {
 192                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 193                 d0 = p1[0];     /* Pull the stuff into registers        */
 194                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 195                 d2 = p1[2];
 196                 d3 = p1[3];
 197                 d4 = p1[4];
 198                 d5 = p1[5];
 199                 d6 = p1[6];
 200                 d7 = p1[7];
 201                 d0 ^= p2[0];
 202                 d1 ^= p2[1];
 203                 d2 ^= p2[2];
 204                 d3 ^= p2[3];
 205                 d4 ^= p2[4];
 206                 d5 ^= p2[5];
 207                 d6 ^= p2[6];
 208                 d7 ^= p2[7];
 209                 d0 ^= p3[0];
 210                 d1 ^= p3[1];
 211                 d2 ^= p3[2];
 212                 d3 ^= p3[3];
 213                 d4 ^= p3[4];
 214                 d5 ^= p3[5];
 215                 d6 ^= p3[6];
 216                 d7 ^= p3[7];
 217                 d0 ^= p4[0];
 218                 d1 ^= p4[1];
 219                 d2 ^= p4[2];
 220                 d3 ^= p4[3];
 221                 d4 ^= p4[4];
 222                 d5 ^= p4[5];
 223                 d6 ^= p4[6];
 224                 d7 ^= p4[7];
 225                 p1[0] = d0;     /* Store the result (in bursts)         */
 226                 p1[1] = d1;
 227                 p1[2] = d2;
 228                 p1[3] = d3;
 229                 p1[4] = d4;
 230                 p1[5] = d5;
 231                 p1[6] = d6;
 232                 p1[7] = d7;
 233                 p1 += 8;
 234                 p2 += 8;
 235                 p3 += 8;
 236                 p4 += 8;
 237         } while (--lines > 0);
 238 }
 239
 240 static void
 241 xor_32regs_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 242             unsigned long *p3, unsigned long *p4, unsigned long *p5)
 243 {
 244         long lines = bytes / (sizeof (long)) / 8;
 245
 246         do {
 247                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 248                 d0 = p1[0];     /* Pull the stuff into registers        */
 249                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 250                 d2 = p1[2];
 251                 d3 = p1[3];
 252                 d4 = p1[4];
 253                 d5 = p1[5];
 254                 d6 = p1[6];
 255                 d7 = p1[7];
 256                 d0 ^= p2[0];
 257                 d1 ^= p2[1];
 258                 d2 ^= p2[2];
 259                 d3 ^= p2[3];
 260                 d4 ^= p2[4];
 261                 d5 ^= p2[5];
 262                 d6 ^= p2[6];
 263                 d7 ^= p2[7];
 264                 d0 ^= p3[0];
 265                 d1 ^= p3[1];
 266                 d2 ^= p3[2];
 267                 d3 ^= p3[3];
 268                 d4 ^= p3[4];
 269                 d5 ^= p3[5];
 270                 d6 ^= p3[6];
 271                 d7 ^= p3[7];
 272                 d0 ^= p4[0];
 273                 d1 ^= p4[1];
 274                 d2 ^= p4[2];
 275                 d3 ^= p4[3];
 276                 d4 ^= p4[4];
 277                 d5 ^= p4[5];
 278                 d6 ^= p4[6];
 279                 d7 ^= p4[7];
 280                 d0 ^= p5[0];
 281                 d1 ^= p5[1];
 282                 d2 ^= p5[2];
 283                 d3 ^= p5[3];
 284                 d4 ^= p5[4];
 285                 d5 ^= p5[5];
 286                 d6 ^= p5[6];
 287                 d7 ^= p5[7];
 288                 p1[0] = d0;     /* Store the result (in bursts)         */
 289                 p1[1] = d1;
 290                 p1[2] = d2;
 291                 p1[3] = d3;
 292                 p1[4] = d4;
 293                 p1[5] = d5;
 294                 p1[6] = d6;
 295                 p1[7] = d7;
 296                 p1 += 8;
 297                 p2 += 8;
 298                 p3 += 8;
 299                 p4 += 8;
 300                 p5 += 8;
 301         } while (--lines > 0);
 302 }
 303
 304 static void
 305 xor_8regs_p_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
 306 {
 307         long lines = bytes / (sizeof (long)) / 8 - 1;
 308         prefetchw(p1);
 309         prefetch(p2);
 310
 311         do {
 312                 prefetchw(p1+8);
 313                 prefetch(p2+8);
 314  once_more:
 315                 p1[0] ^= p2[0];
 316                 p1[1] ^= p2[1];
 317                 p1[2] ^= p2[2];
 318                 p1[3] ^= p2[3];
 319                 p1[4] ^= p2[4];
 320                 p1[5] ^= p2[5];
 321                 p1[6] ^= p2[6];
 322                 p1[7] ^= p2[7];
 323                 p1 += 8;
 324                 p2 += 8;
 325         } while (--lines > 0);
 326         if (lines == 0)
 327                 goto once_more;
 328 }
 329
 330 static void
 331 xor_8regs_p_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 332             unsigned long *p3)
 333 {
 334         long lines = bytes / (sizeof (long)) / 8 - 1;
 335         prefetchw(p1);
 336         prefetch(p2);
 337         prefetch(p3);
 338
 339         do {
 340                 prefetchw(p1+8);
 341                 prefetch(p2+8);
 342                 prefetch(p3+8);
 343  once_more:
 344                 p1[0] ^= p2[0] ^ p3[0];
 345                 p1[1] ^= p2[1] ^ p3[1];
 346                 p1[2] ^= p2[2] ^ p3[2];
 347                 p1[3] ^= p2[3] ^ p3[3];
 348                 p1[4] ^= p2[4] ^ p3[4];
 349                 p1[5] ^= p2[5] ^ p3[5];
 350                 p1[6] ^= p2[6] ^ p3[6];
 351                 p1[7] ^= p2[7] ^ p3[7];
 352                 p1 += 8;
 353                 p2 += 8;
 354                 p3 += 8;
 355         } while (--lines > 0);
 356         if (lines == 0)
 357                 goto once_more;
 358 }
 359
 360 static void
 361 xor_8regs_p_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 362             unsigned long *p3, unsigned long *p4)
 363 {
 364         long lines = bytes / (sizeof (long)) / 8 - 1;
 365
 366         prefetchw(p1);
 367         prefetch(p2);
 368         prefetch(p3);
 369         prefetch(p4);
 370
 371         do {
 372                 prefetchw(p1+8);
 373                 prefetch(p2+8);
 374                 prefetch(p3+8);
 375                 prefetch(p4+8);
 376  once_more:
 377                 p1[0] ^= p2[0] ^ p3[0] ^ p4[0];
 378                 p1[1] ^= p2[1] ^ p3[1] ^ p4[1];
 379                 p1[2] ^= p2[2] ^ p3[2] ^ p4[2];
 380                 p1[3] ^= p2[3] ^ p3[3] ^ p4[3];
 381                 p1[4] ^= p2[4] ^ p3[4] ^ p4[4];
 382                 p1[5] ^= p2[5] ^ p3[5] ^ p4[5];
 383                 p1[6] ^= p2[6] ^ p3[6] ^ p4[6];
 384                 p1[7] ^= p2[7] ^ p3[7] ^ p4[7];
 385                 p1 += 8;
 386                 p2 += 8;
 387                 p3 += 8;
 388                 p4 += 8;
 389         } while (--lines > 0);
 390         if (lines == 0)
 391                 goto once_more;
 392 }
 393
 394 static void
 395 xor_8regs_p_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 396             unsigned long *p3, unsigned long *p4, unsigned long *p5)
 397 {
 398         long lines = bytes / (sizeof (long)) / 8 - 1;
 399
 400         prefetchw(p1);
 401         prefetch(p2);
 402         prefetch(p3);
 403         prefetch(p4);
 404         prefetch(p5);
 405
 406         do {
 407                 prefetchw(p1+8);
 408                 prefetch(p2+8);
 409                 prefetch(p3+8);
 410                 prefetch(p4+8);
 411                 prefetch(p5+8);
 412  once_more:
 413                 p1[0] ^= p2[0] ^ p3[0] ^ p4[0] ^ p5[0];
 414                 p1[1] ^= p2[1] ^ p3[1] ^ p4[1] ^ p5[1];
 415                 p1[2] ^= p2[2] ^ p3[2] ^ p4[2] ^ p5[2];
 416                 p1[3] ^= p2[3] ^ p3[3] ^ p4[3] ^ p5[3];
 417                 p1[4] ^= p2[4] ^ p3[4] ^ p4[4] ^ p5[4];
 418                 p1[5] ^= p2[5] ^ p3[5] ^ p4[5] ^ p5[5];
 419                 p1[6] ^= p2[6] ^ p3[6] ^ p4[6] ^ p5[6];
 420                 p1[7] ^= p2[7] ^ p3[7] ^ p4[7] ^ p5[7];
 421                 p1 += 8;
 422                 p2 += 8;
 423                 p3 += 8;
 424                 p4 += 8;
 425                 p5 += 8;
 426         } while (--lines > 0);
 427         if (lines == 0)
 428                 goto once_more;
 429 }
 430
 431 static void
 432 xor_32regs_p_2(unsigned long bytes, unsigned long *p1, unsigned long *p2)
 433 {
 434         long lines = bytes / (sizeof (long)) / 8 - 1;
 435
 436         prefetchw(p1);
 437         prefetch(p2);
 438
 439         do {
 440                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 441
 442                 prefetchw(p1+8);
 443                 prefetch(p2+8);
 444  once_more:
 445                 d0 = p1[0];     /* Pull the stuff into registers        */
 446                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 447                 d2 = p1[2];
 448                 d3 = p1[3];
 449                 d4 = p1[4];
 450                 d5 = p1[5];
 451                 d6 = p1[6];
 452                 d7 = p1[7];
 453                 d0 ^= p2[0];
 454                 d1 ^= p2[1];
 455                 d2 ^= p2[2];
 456                 d3 ^= p2[3];
 457                 d4 ^= p2[4];
 458                 d5 ^= p2[5];
 459                 d6 ^= p2[6];
 460                 d7 ^= p2[7];
 461                 p1[0] = d0;     /* Store the result (in bursts)         */
 462                 p1[1] = d1;
 463                 p1[2] = d2;
 464                 p1[3] = d3;
 465                 p1[4] = d4;
 466                 p1[5] = d5;
 467                 p1[6] = d6;
 468                 p1[7] = d7;
 469                 p1 += 8;
 470                 p2 += 8;
 471         } while (--lines > 0);
 472         if (lines == 0)
 473                 goto once_more;
 474 }
 475
 476 static void
 477 xor_32regs_p_3(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 478             unsigned long *p3)
 479 {
 480         long lines = bytes / (sizeof (long)) / 8 - 1;
 481
 482         prefetchw(p1);
 483         prefetch(p2);
 484         prefetch(p3);
 485
 486         do {
 487                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 488
 489                 prefetchw(p1+8);
 490                 prefetch(p2+8);
 491                 prefetch(p3+8);
 492  once_more:
 493                 d0 = p1[0];     /* Pull the stuff into registers        */
 494                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 495                 d2 = p1[2];
 496                 d3 = p1[3];
 497                 d4 = p1[4];
 498                 d5 = p1[5];
 499                 d6 = p1[6];
 500                 d7 = p1[7];
 501                 d0 ^= p2[0];
 502                 d1 ^= p2[1];
 503                 d2 ^= p2[2];
 504                 d3 ^= p2[3];
 505                 d4 ^= p2[4];
 506                 d5 ^= p2[5];
 507                 d6 ^= p2[6];
 508                 d7 ^= p2[7];
 509                 d0 ^= p3[0];
 510                 d1 ^= p3[1];
 511                 d2 ^= p3[2];
 512                 d3 ^= p3[3];
 513                 d4 ^= p3[4];
 514                 d5 ^= p3[5];
 515                 d6 ^= p3[6];
 516                 d7 ^= p3[7];
 517                 p1[0] = d0;     /* Store the result (in bursts)         */
 518                 p1[1] = d1;
 519                 p1[2] = d2;
 520                 p1[3] = d3;
 521                 p1[4] = d4;
 522                 p1[5] = d5;
 523                 p1[6] = d6;
 524                 p1[7] = d7;
 525                 p1 += 8;
 526                 p2 += 8;
 527                 p3 += 8;
 528         } while (--lines > 0);
 529         if (lines == 0)
 530                 goto once_more;
 531 }
 532
 533 static void
 534 xor_32regs_p_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 535             unsigned long *p3, unsigned long *p4)
 536 {
 537         long lines = bytes / (sizeof (long)) / 8 - 1;
 538
 539         prefetchw(p1);
 540         prefetch(p2);
 541         prefetch(p3);
 542         prefetch(p4);
 543
 544         do {
 545                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 546
 547                 prefetchw(p1+8);
 548                 prefetch(p2+8);
 549                 prefetch(p3+8);
 550                 prefetch(p4+8);
 551  once_more:
 552                 d0 = p1[0];     /* Pull the stuff into registers        */
 553                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 554                 d2 = p1[2];
 555                 d3 = p1[3];
 556                 d4 = p1[4];
 557                 d5 = p1[5];
 558                 d6 = p1[6];
 559                 d7 = p1[7];
 560                 d0 ^= p2[0];
 561                 d1 ^= p2[1];
 562                 d2 ^= p2[2];
 563                 d3 ^= p2[3];
 564                 d4 ^= p2[4];
 565                 d5 ^= p2[5];
 566                 d6 ^= p2[6];
 567                 d7 ^= p2[7];
 568                 d0 ^= p3[0];
 569                 d1 ^= p3[1];
 570                 d2 ^= p3[2];
 571                 d3 ^= p3[3];
 572                 d4 ^= p3[4];
 573                 d5 ^= p3[5];
 574                 d6 ^= p3[6];
 575                 d7 ^= p3[7];
 576                 d0 ^= p4[0];
 577                 d1 ^= p4[1];
 578                 d2 ^= p4[2];
 579                 d3 ^= p4[3];
 580                 d4 ^= p4[4];
 581                 d5 ^= p4[5];
 582                 d6 ^= p4[6];
 583                 d7 ^= p4[7];
 584                 p1[0] = d0;     /* Store the result (in bursts)         */
 585                 p1[1] = d1;
 586                 p1[2] = d2;
 587                 p1[3] = d3;
 588                 p1[4] = d4;
 589                 p1[5] = d5;
 590                 p1[6] = d6;
 591                 p1[7] = d7;
 592                 p1 += 8;
 593                 p2 += 8;
 594                 p3 += 8;
 595                 p4 += 8;
 596         } while (--lines > 0);
 597         if (lines == 0)
 598                 goto once_more;
 599 }
 600
 601 static void
 602 xor_32regs_p_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
 603             unsigned long *p3, unsigned long *p4, unsigned long *p5)
 604 {
 605         long lines = bytes / (sizeof (long)) / 8 - 1;
 606
 607         prefetchw(p1);
 608         prefetch(p2);
 609         prefetch(p3);
 610         prefetch(p4);
 611         prefetch(p5);
 612
 613         do {
 614                 register long d0, d1, d2, d3, d4, d5, d6, d7;
 615
 616                 prefetchw(p1+8);
 617                 prefetch(p2+8);
 618                 prefetch(p3+8);
 619                 prefetch(p4+8);
 620                 prefetch(p5+8);
 621  once_more:
 622                 d0 = p1[0];     /* Pull the stuff into registers        */
 623                 d1 = p1[1];     /*  ... in bursts, if possible.         */
 624                 d2 = p1[2];
 625                 d3 = p1[3];
 626                 d4 = p1[4];
 627                 d5 = p1[5];
 628                 d6 = p1[6];
 629                 d7 = p1[7];
 630                 d0 ^= p2[0];
 631                 d1 ^= p2[1];
 632                 d2 ^= p2[2];
 633                 d3 ^= p2[3];
 634                 d4 ^= p2[4];
 635                 d5 ^= p2[5];
 636                 d6 ^= p2[6];
 637                 d7 ^= p2[7];
 638                 d0 ^= p3[0];
 639                 d1 ^= p3[1];
 640                 d2 ^= p3[2];
 641                 d3 ^= p3[3];
 642                 d4 ^= p3[4];
 643                 d5 ^= p3[5];
 644                 d6 ^= p3[6];
 645                 d7 ^= p3[7];
 646                 d0 ^= p4[0];
 647                 d1 ^= p4[1];
 648                 d2 ^= p4[2];
 649                 d3 ^= p4[3];
 650                 d4 ^= p4[4];
 651                 d5 ^= p4[5];
 652                 d6 ^= p4[6];
 653                 d7 ^= p4[7];
 654                 d0 ^= p5[0];
 655                 d1 ^= p5[1];
 656                 d2 ^= p5[2];
 657                 d3 ^= p5[3];
 658                 d4 ^= p5[4];
 659                 d5 ^= p5[5];
 660                 d6 ^= p5[6];
 661                 d7 ^= p5[7];
 662                 p1[0] = d0;     /* Store the result (in bursts)         */
 663                 p1[1] = d1;
 664                 p1[2] = d2;
 665                 p1[3] = d3;
 666                 p1[4] = d4;
 667                 p1[5] = d5;
 668                 p1[6] = d6;
 669                 p1[7] = d7;
 670                 p1 += 8;
 671                 p2 += 8;
 672                 p3 += 8;
 673                 p4 += 8;
 674                 p5 += 8;
 675         } while (--lines > 0);
 676         if (lines == 0)
 677                 goto once_more;
 678 }
 679
 680 static struct xor_block_template xor_block_8regs = {
 681         .name = "8regs",
 682         .do_2 = xor_8regs_2,
 683         .do_3 = xor_8regs_3,
 684         .do_4 = xor_8regs_4,
 685         .do_5 = xor_8regs_5,
 686 };
 687
 688 static struct xor_block_template xor_block_32regs = {
 689         .name = "32regs",
 690         .do_2 = xor_32regs_2,
 691         .do_3 = xor_32regs_3,
 692         .do_4 = xor_32regs_4,
 693         .do_5 = xor_32regs_5,
 694 };
 695
 696 static struct xor_block_template xor_block_8regs_p = {
 697         .name = "8regs_prefetch",
 698         .do_2 = xor_8regs_p_2,
 699         .do_3 = xor_8regs_p_3,
 700         .do_4 = xor_8regs_p_4,
 701         .do_5 = xor_8regs_p_5,
 702 };
 703
 704 static struct xor_block_template xor_block_32regs_p = {
 705         .name = "32regs_prefetch",
 706         .do_2 = xor_32regs_p_2,
 707         .do_3 = xor_32regs_p_3,
 708         .do_4 = xor_32regs_p_4,
 709         .do_5 = xor_32regs_p_5,
 710 };
 711
 712 #define XOR_TRY_TEMPLATES                       \
 713         do {                                    \
 714                 xor_speed(&xor_block_8regs);    \
 715                 xor_speed(&xor_block_8regs_p);  \
 716                 xor_speed(&xor_block_32regs);   \
 717                 xor_speed(&xor_block_32regs_p); \
 718         } while (0)