atom.c revision a084e6ee6e64a76f1a9665d527203cdab7d6048f
1/* 2 * Copyright 2008 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Author: Stanislaw Skowronek 23 */ 24 25#include <linux/module.h> 26#include <linux/sched.h> 27#include <asm/unaligned.h> 28 29#define ATOM_DEBUG 30 31#include "atom.h" 32#include "atom-names.h" 33#include "atom-bits.h" 34 35#define ATOM_COND_ABOVE 0 36#define ATOM_COND_ABOVEOREQUAL 1 37#define ATOM_COND_ALWAYS 2 38#define ATOM_COND_BELOW 3 39#define ATOM_COND_BELOWOREQUAL 4 40#define ATOM_COND_EQUAL 5 41#define ATOM_COND_NOTEQUAL 6 42 43#define ATOM_PORT_ATI 0 44#define ATOM_PORT_PCI 1 45#define ATOM_PORT_SYSIO 2 46 47#define ATOM_UNIT_MICROSEC 0 48#define ATOM_UNIT_MILLISEC 1 49 50#define PLL_INDEX 2 51#define PLL_DATA 3 52 53typedef struct { 54 struct atom_context *ctx; 55 uint32_t *ps, *ws; 56 int ps_shift; 57 uint16_t start; 58 unsigned last_jump; 59 unsigned long last_jump_jiffies; 60 bool abort; 61} atom_exec_context; 62 63int atom_debug = 0; 64static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); 65int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); 66 67static uint32_t atom_arg_mask[8] = 68 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000, 690xFF000000 }; 70static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 }; 71 72static int atom_dst_to_src[8][4] = { 73 /* translate destination alignment field to the source alignment encoding */ 74 {0, 0, 0, 0}, 75 {1, 2, 3, 0}, 76 {1, 2, 3, 0}, 77 {1, 2, 3, 0}, 78 {4, 5, 6, 7}, 79 {4, 5, 6, 7}, 80 {4, 5, 6, 7}, 81 {4, 5, 6, 7}, 82}; 83static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 }; 84 85static int debug_depth = 0; 86#ifdef ATOM_DEBUG 87static void debug_print_spaces(int n) 88{ 89 while (n--) 90 printk(" "); 91} 92 93#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) 94#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) 95#else 96#define DEBUG(...) do { } while (0) 97#define SDEBUG(...) do { } while (0) 98#endif 99 100static uint32_t atom_iio_execute(struct atom_context *ctx, int base, 101 uint32_t index, uint32_t data) 102{ 103 uint32_t temp = 0xCDCDCDCD; 104 while (1) 105 switch (CU8(base)) { 106 case ATOM_IIO_NOP: 107 base++; 108 break; 109 case ATOM_IIO_READ: 110 temp = ctx->card->reg_read(ctx->card, CU16(base + 1)); 111 base += 3; 112 break; 113 case ATOM_IIO_WRITE: 114 (void)ctx->card->reg_read(ctx->card, CU16(base + 1)); 115 ctx->card->reg_write(ctx->card, CU16(base + 1), temp); 116 base += 3; 117 break; 118 case ATOM_IIO_CLEAR: 119 temp &= 120 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 121 CU8(base + 2)); 122 base += 3; 123 break; 124 case ATOM_IIO_SET: 125 temp |= 126 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + 127 2); 128 base += 3; 129 break; 130 case ATOM_IIO_MOVE_INDEX: 131 temp &= 132 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 133 CU8(base + 2)); 134 temp |= 135 ((index >> CU8(base + 2)) & 136 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 137 3); 138 base += 4; 139 break; 140 case ATOM_IIO_MOVE_DATA: 141 temp &= 142 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 143 CU8(base + 2)); 144 temp |= 145 ((data >> CU8(base + 2)) & 146 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 147 3); 148 base += 4; 149 break; 150 case ATOM_IIO_MOVE_ATTR: 151 temp &= 152 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 153 CU8(base + 2)); 154 temp |= 155 ((ctx-> 156 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - 157 CU8 158 (base 159 + 160 1)))) 161 << CU8(base + 3); 162 base += 4; 163 break; 164 case ATOM_IIO_END: 165 return temp; 166 default: 167 printk(KERN_INFO "Unknown IIO opcode.\n"); 168 return 0; 169 } 170} 171 172static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, 173 int *ptr, uint32_t *saved, int print) 174{ 175 uint32_t idx, val = 0xCDCDCDCD, align, arg; 176 struct atom_context *gctx = ctx->ctx; 177 arg = attr & 7; 178 align = (attr >> 3) & 7; 179 switch (arg) { 180 case ATOM_ARG_REG: 181 idx = U16(*ptr); 182 (*ptr) += 2; 183 if (print) 184 DEBUG("REG[0x%04X]", idx); 185 idx += gctx->reg_block; 186 switch (gctx->io_mode) { 187 case ATOM_IO_MM: 188 val = gctx->card->reg_read(gctx->card, idx); 189 break; 190 case ATOM_IO_PCI: 191 printk(KERN_INFO 192 "PCI registers are not implemented.\n"); 193 return 0; 194 case ATOM_IO_SYSIO: 195 printk(KERN_INFO 196 "SYSIO registers are not implemented.\n"); 197 return 0; 198 default: 199 if (!(gctx->io_mode & 0x80)) { 200 printk(KERN_INFO "Bad IO mode.\n"); 201 return 0; 202 } 203 if (!gctx->iio[gctx->io_mode & 0x7F]) { 204 printk(KERN_INFO 205 "Undefined indirect IO read method %d.\n", 206 gctx->io_mode & 0x7F); 207 return 0; 208 } 209 val = 210 atom_iio_execute(gctx, 211 gctx->iio[gctx->io_mode & 0x7F], 212 idx, 0); 213 } 214 break; 215 case ATOM_ARG_PS: 216 idx = U8(*ptr); 217 (*ptr)++; 218 /* get_unaligned_le32 avoids unaligned accesses from atombios 219 * tables, noticed on a DEC Alpha. */ 220 val = get_unaligned_le32((u32 *)&ctx->ps[idx]); 221 if (print) 222 DEBUG("PS[0x%02X,0x%04X]", idx, val); 223 break; 224 case ATOM_ARG_WS: 225 idx = U8(*ptr); 226 (*ptr)++; 227 if (print) 228 DEBUG("WS[0x%02X]", idx); 229 switch (idx) { 230 case ATOM_WS_QUOTIENT: 231 val = gctx->divmul[0]; 232 break; 233 case ATOM_WS_REMAINDER: 234 val = gctx->divmul[1]; 235 break; 236 case ATOM_WS_DATAPTR: 237 val = gctx->data_block; 238 break; 239 case ATOM_WS_SHIFT: 240 val = gctx->shift; 241 break; 242 case ATOM_WS_OR_MASK: 243 val = 1 << gctx->shift; 244 break; 245 case ATOM_WS_AND_MASK: 246 val = ~(1 << gctx->shift); 247 break; 248 case ATOM_WS_FB_WINDOW: 249 val = gctx->fb_base; 250 break; 251 case ATOM_WS_ATTRIBUTES: 252 val = gctx->io_attr; 253 break; 254 case ATOM_WS_REGPTR: 255 val = gctx->reg_block; 256 break; 257 default: 258 val = ctx->ws[idx]; 259 } 260 break; 261 case ATOM_ARG_ID: 262 idx = U16(*ptr); 263 (*ptr) += 2; 264 if (print) { 265 if (gctx->data_block) 266 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); 267 else 268 DEBUG("ID[0x%04X]", idx); 269 } 270 val = U32(idx + gctx->data_block); 271 break; 272 case ATOM_ARG_FB: 273 idx = U8(*ptr); 274 (*ptr)++; 275 val = gctx->scratch[((gctx->fb_base + idx) / 4)]; 276 if (print) 277 DEBUG("FB[0x%02X]", idx); 278 break; 279 case ATOM_ARG_IMM: 280 switch (align) { 281 case ATOM_SRC_DWORD: 282 val = U32(*ptr); 283 (*ptr) += 4; 284 if (print) 285 DEBUG("IMM 0x%08X\n", val); 286 return val; 287 case ATOM_SRC_WORD0: 288 case ATOM_SRC_WORD8: 289 case ATOM_SRC_WORD16: 290 val = U16(*ptr); 291 (*ptr) += 2; 292 if (print) 293 DEBUG("IMM 0x%04X\n", val); 294 return val; 295 case ATOM_SRC_BYTE0: 296 case ATOM_SRC_BYTE8: 297 case ATOM_SRC_BYTE16: 298 case ATOM_SRC_BYTE24: 299 val = U8(*ptr); 300 (*ptr)++; 301 if (print) 302 DEBUG("IMM 0x%02X\n", val); 303 return val; 304 } 305 return 0; 306 case ATOM_ARG_PLL: 307 idx = U8(*ptr); 308 (*ptr)++; 309 if (print) 310 DEBUG("PLL[0x%02X]", idx); 311 val = gctx->card->pll_read(gctx->card, idx); 312 break; 313 case ATOM_ARG_MC: 314 idx = U8(*ptr); 315 (*ptr)++; 316 if (print) 317 DEBUG("MC[0x%02X]", idx); 318 val = gctx->card->mc_read(gctx->card, idx); 319 break; 320 } 321 if (saved) 322 *saved = val; 323 val &= atom_arg_mask[align]; 324 val >>= atom_arg_shift[align]; 325 if (print) 326 switch (align) { 327 case ATOM_SRC_DWORD: 328 DEBUG(".[31:0] -> 0x%08X\n", val); 329 break; 330 case ATOM_SRC_WORD0: 331 DEBUG(".[15:0] -> 0x%04X\n", val); 332 break; 333 case ATOM_SRC_WORD8: 334 DEBUG(".[23:8] -> 0x%04X\n", val); 335 break; 336 case ATOM_SRC_WORD16: 337 DEBUG(".[31:16] -> 0x%04X\n", val); 338 break; 339 case ATOM_SRC_BYTE0: 340 DEBUG(".[7:0] -> 0x%02X\n", val); 341 break; 342 case ATOM_SRC_BYTE8: 343 DEBUG(".[15:8] -> 0x%02X\n", val); 344 break; 345 case ATOM_SRC_BYTE16: 346 DEBUG(".[23:16] -> 0x%02X\n", val); 347 break; 348 case ATOM_SRC_BYTE24: 349 DEBUG(".[31:24] -> 0x%02X\n", val); 350 break; 351 } 352 return val; 353} 354 355static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) 356{ 357 uint32_t align = (attr >> 3) & 7, arg = attr & 7; 358 switch (arg) { 359 case ATOM_ARG_REG: 360 case ATOM_ARG_ID: 361 (*ptr) += 2; 362 break; 363 case ATOM_ARG_PLL: 364 case ATOM_ARG_MC: 365 case ATOM_ARG_PS: 366 case ATOM_ARG_WS: 367 case ATOM_ARG_FB: 368 (*ptr)++; 369 break; 370 case ATOM_ARG_IMM: 371 switch (align) { 372 case ATOM_SRC_DWORD: 373 (*ptr) += 4; 374 return; 375 case ATOM_SRC_WORD0: 376 case ATOM_SRC_WORD8: 377 case ATOM_SRC_WORD16: 378 (*ptr) += 2; 379 return; 380 case ATOM_SRC_BYTE0: 381 case ATOM_SRC_BYTE8: 382 case ATOM_SRC_BYTE16: 383 case ATOM_SRC_BYTE24: 384 (*ptr)++; 385 return; 386 } 387 return; 388 } 389} 390 391static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) 392{ 393 return atom_get_src_int(ctx, attr, ptr, NULL, 1); 394} 395 396static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) 397{ 398 uint32_t val = 0xCDCDCDCD; 399 400 switch (align) { 401 case ATOM_SRC_DWORD: 402 val = U32(*ptr); 403 (*ptr) += 4; 404 break; 405 case ATOM_SRC_WORD0: 406 case ATOM_SRC_WORD8: 407 case ATOM_SRC_WORD16: 408 val = U16(*ptr); 409 (*ptr) += 2; 410 break; 411 case ATOM_SRC_BYTE0: 412 case ATOM_SRC_BYTE8: 413 case ATOM_SRC_BYTE16: 414 case ATOM_SRC_BYTE24: 415 val = U8(*ptr); 416 (*ptr)++; 417 break; 418 } 419 return val; 420} 421 422static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, 423 int *ptr, uint32_t *saved, int print) 424{ 425 return atom_get_src_int(ctx, 426 arg | atom_dst_to_src[(attr >> 3) & 427 7][(attr >> 6) & 3] << 3, 428 ptr, saved, print); 429} 430 431static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) 432{ 433 atom_skip_src_int(ctx, 434 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 435 3] << 3, ptr); 436} 437 438static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, 439 int *ptr, uint32_t val, uint32_t saved) 440{ 441 uint32_t align = 442 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = 443 val, idx; 444 struct atom_context *gctx = ctx->ctx; 445 old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; 446 val <<= atom_arg_shift[align]; 447 val &= atom_arg_mask[align]; 448 saved &= ~atom_arg_mask[align]; 449 val |= saved; 450 switch (arg) { 451 case ATOM_ARG_REG: 452 idx = U16(*ptr); 453 (*ptr) += 2; 454 DEBUG("REG[0x%04X]", idx); 455 idx += gctx->reg_block; 456 switch (gctx->io_mode) { 457 case ATOM_IO_MM: 458 if (idx == 0) 459 gctx->card->reg_write(gctx->card, idx, 460 val << 2); 461 else 462 gctx->card->reg_write(gctx->card, idx, val); 463 break; 464 case ATOM_IO_PCI: 465 printk(KERN_INFO 466 "PCI registers are not implemented.\n"); 467 return; 468 case ATOM_IO_SYSIO: 469 printk(KERN_INFO 470 "SYSIO registers are not implemented.\n"); 471 return; 472 default: 473 if (!(gctx->io_mode & 0x80)) { 474 printk(KERN_INFO "Bad IO mode.\n"); 475 return; 476 } 477 if (!gctx->iio[gctx->io_mode & 0xFF]) { 478 printk(KERN_INFO 479 "Undefined indirect IO write method %d.\n", 480 gctx->io_mode & 0x7F); 481 return; 482 } 483 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], 484 idx, val); 485 } 486 break; 487 case ATOM_ARG_PS: 488 idx = U8(*ptr); 489 (*ptr)++; 490 DEBUG("PS[0x%02X]", idx); 491 ctx->ps[idx] = cpu_to_le32(val); 492 break; 493 case ATOM_ARG_WS: 494 idx = U8(*ptr); 495 (*ptr)++; 496 DEBUG("WS[0x%02X]", idx); 497 switch (idx) { 498 case ATOM_WS_QUOTIENT: 499 gctx->divmul[0] = val; 500 break; 501 case ATOM_WS_REMAINDER: 502 gctx->divmul[1] = val; 503 break; 504 case ATOM_WS_DATAPTR: 505 gctx->data_block = val; 506 break; 507 case ATOM_WS_SHIFT: 508 gctx->shift = val; 509 break; 510 case ATOM_WS_OR_MASK: 511 case ATOM_WS_AND_MASK: 512 break; 513 case ATOM_WS_FB_WINDOW: 514 gctx->fb_base = val; 515 break; 516 case ATOM_WS_ATTRIBUTES: 517 gctx->io_attr = val; 518 break; 519 case ATOM_WS_REGPTR: 520 gctx->reg_block = val; 521 break; 522 default: 523 ctx->ws[idx] = val; 524 } 525 break; 526 case ATOM_ARG_FB: 527 idx = U8(*ptr); 528 (*ptr)++; 529 gctx->scratch[((gctx->fb_base + idx) / 4)] = val; 530 DEBUG("FB[0x%02X]", idx); 531 break; 532 case ATOM_ARG_PLL: 533 idx = U8(*ptr); 534 (*ptr)++; 535 DEBUG("PLL[0x%02X]", idx); 536 gctx->card->pll_write(gctx->card, idx, val); 537 break; 538 case ATOM_ARG_MC: 539 idx = U8(*ptr); 540 (*ptr)++; 541 DEBUG("MC[0x%02X]", idx); 542 gctx->card->mc_write(gctx->card, idx, val); 543 return; 544 } 545 switch (align) { 546 case ATOM_SRC_DWORD: 547 DEBUG(".[31:0] <- 0x%08X\n", old_val); 548 break; 549 case ATOM_SRC_WORD0: 550 DEBUG(".[15:0] <- 0x%04X\n", old_val); 551 break; 552 case ATOM_SRC_WORD8: 553 DEBUG(".[23:8] <- 0x%04X\n", old_val); 554 break; 555 case ATOM_SRC_WORD16: 556 DEBUG(".[31:16] <- 0x%04X\n", old_val); 557 break; 558 case ATOM_SRC_BYTE0: 559 DEBUG(".[7:0] <- 0x%02X\n", old_val); 560 break; 561 case ATOM_SRC_BYTE8: 562 DEBUG(".[15:8] <- 0x%02X\n", old_val); 563 break; 564 case ATOM_SRC_BYTE16: 565 DEBUG(".[23:16] <- 0x%02X\n", old_val); 566 break; 567 case ATOM_SRC_BYTE24: 568 DEBUG(".[31:24] <- 0x%02X\n", old_val); 569 break; 570 } 571} 572 573static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg) 574{ 575 uint8_t attr = U8((*ptr)++); 576 uint32_t dst, src, saved; 577 int dptr = *ptr; 578 SDEBUG(" dst: "); 579 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 580 SDEBUG(" src: "); 581 src = atom_get_src(ctx, attr, ptr); 582 dst += src; 583 SDEBUG(" dst: "); 584 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 585} 586 587static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg) 588{ 589 uint8_t attr = U8((*ptr)++); 590 uint32_t dst, src, saved; 591 int dptr = *ptr; 592 SDEBUG(" dst: "); 593 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 594 SDEBUG(" src: "); 595 src = atom_get_src(ctx, attr, ptr); 596 dst &= src; 597 SDEBUG(" dst: "); 598 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 599} 600 601static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) 602{ 603 printk("ATOM BIOS beeped!\n"); 604} 605 606static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) 607{ 608 int idx = U8((*ptr)++); 609 int r = 0; 610 611 if (idx < ATOM_TABLE_NAMES_CNT) 612 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); 613 else 614 SDEBUG(" table: %d\n", idx); 615 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) 616 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); 617 if (r) { 618 ctx->abort = true; 619 } 620} 621 622static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) 623{ 624 uint8_t attr = U8((*ptr)++); 625 uint32_t saved; 626 int dptr = *ptr; 627 attr &= 0x38; 628 attr |= atom_def_dst[attr >> 3] << 6; 629 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 630 SDEBUG(" dst: "); 631 atom_put_dst(ctx, arg, attr, &dptr, 0, saved); 632} 633 634static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) 635{ 636 uint8_t attr = U8((*ptr)++); 637 uint32_t dst, src; 638 SDEBUG(" src1: "); 639 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 640 SDEBUG(" src2: "); 641 src = atom_get_src(ctx, attr, ptr); 642 ctx->ctx->cs_equal = (dst == src); 643 ctx->ctx->cs_above = (dst > src); 644 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", 645 ctx->ctx->cs_above ? "GT" : "LE"); 646} 647 648static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) 649{ 650 uint8_t count = U8((*ptr)++); 651 SDEBUG(" count: %d\n", count); 652 if (arg == ATOM_UNIT_MICROSEC) 653 udelay(count); 654 else 655 schedule_timeout_uninterruptible(msecs_to_jiffies(count)); 656} 657 658static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) 659{ 660 uint8_t attr = U8((*ptr)++); 661 uint32_t dst, src; 662 SDEBUG(" src1: "); 663 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 664 SDEBUG(" src2: "); 665 src = atom_get_src(ctx, attr, ptr); 666 if (src != 0) { 667 ctx->ctx->divmul[0] = dst / src; 668 ctx->ctx->divmul[1] = dst % src; 669 } else { 670 ctx->ctx->divmul[0] = 0; 671 ctx->ctx->divmul[1] = 0; 672 } 673} 674 675static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) 676{ 677 /* functionally, a nop */ 678} 679 680static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) 681{ 682 int execute = 0, target = U16(*ptr); 683 unsigned long cjiffies; 684 685 (*ptr) += 2; 686 switch (arg) { 687 case ATOM_COND_ABOVE: 688 execute = ctx->ctx->cs_above; 689 break; 690 case ATOM_COND_ABOVEOREQUAL: 691 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; 692 break; 693 case ATOM_COND_ALWAYS: 694 execute = 1; 695 break; 696 case ATOM_COND_BELOW: 697 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); 698 break; 699 case ATOM_COND_BELOWOREQUAL: 700 execute = !ctx->ctx->cs_above; 701 break; 702 case ATOM_COND_EQUAL: 703 execute = ctx->ctx->cs_equal; 704 break; 705 case ATOM_COND_NOTEQUAL: 706 execute = !ctx->ctx->cs_equal; 707 break; 708 } 709 if (arg != ATOM_COND_ALWAYS) 710 SDEBUG(" taken: %s\n", execute ? "yes" : "no"); 711 SDEBUG(" target: 0x%04X\n", target); 712 if (execute) { 713 if (ctx->last_jump == (ctx->start + target)) { 714 cjiffies = jiffies; 715 if (time_after(cjiffies, ctx->last_jump_jiffies)) { 716 cjiffies -= ctx->last_jump_jiffies; 717 if ((jiffies_to_msecs(cjiffies) > 1000)) { 718 DRM_ERROR("atombios stuck in loop for more than 1sec aborting\n"); 719 ctx->abort = true; 720 } 721 } else { 722 /* jiffies wrap around we will just wait a little longer */ 723 ctx->last_jump_jiffies = jiffies; 724 } 725 } else { 726 ctx->last_jump = ctx->start + target; 727 ctx->last_jump_jiffies = jiffies; 728 } 729 *ptr = ctx->start + target; 730 } 731} 732 733static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) 734{ 735 uint8_t attr = U8((*ptr)++); 736 uint32_t dst, src1, src2, saved; 737 int dptr = *ptr; 738 SDEBUG(" dst: "); 739 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 740 SDEBUG(" src1: "); 741 src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); 742 SDEBUG(" src2: "); 743 src2 = atom_get_src(ctx, attr, ptr); 744 dst &= src1; 745 dst |= src2; 746 SDEBUG(" dst: "); 747 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 748} 749 750static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) 751{ 752 uint8_t attr = U8((*ptr)++); 753 uint32_t src, saved; 754 int dptr = *ptr; 755 if (((attr >> 3) & 7) != ATOM_SRC_DWORD) 756 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 757 else { 758 atom_skip_dst(ctx, arg, attr, ptr); 759 saved = 0xCDCDCDCD; 760 } 761 SDEBUG(" src: "); 762 src = atom_get_src(ctx, attr, ptr); 763 SDEBUG(" dst: "); 764 atom_put_dst(ctx, arg, attr, &dptr, src, saved); 765} 766 767static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) 768{ 769 uint8_t attr = U8((*ptr)++); 770 uint32_t dst, src; 771 SDEBUG(" src1: "); 772 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 773 SDEBUG(" src2: "); 774 src = atom_get_src(ctx, attr, ptr); 775 ctx->ctx->divmul[0] = dst * src; 776} 777 778static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) 779{ 780 /* nothing */ 781} 782 783static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) 784{ 785 uint8_t attr = U8((*ptr)++); 786 uint32_t dst, src, saved; 787 int dptr = *ptr; 788 SDEBUG(" dst: "); 789 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 790 SDEBUG(" src: "); 791 src = atom_get_src(ctx, attr, ptr); 792 dst |= src; 793 SDEBUG(" dst: "); 794 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 795} 796 797static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) 798{ 799 uint8_t val = U8((*ptr)++); 800 SDEBUG("POST card output: 0x%02X\n", val); 801} 802 803static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) 804{ 805 printk(KERN_INFO "unimplemented!\n"); 806} 807 808static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) 809{ 810 printk(KERN_INFO "unimplemented!\n"); 811} 812 813static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) 814{ 815 printk(KERN_INFO "unimplemented!\n"); 816} 817 818static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) 819{ 820 int idx = U8(*ptr); 821 (*ptr)++; 822 SDEBUG(" block: %d\n", idx); 823 if (!idx) 824 ctx->ctx->data_block = 0; 825 else if (idx == 255) 826 ctx->ctx->data_block = ctx->start; 827 else 828 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); 829 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); 830} 831 832static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) 833{ 834 uint8_t attr = U8((*ptr)++); 835 SDEBUG(" fb_base: "); 836 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); 837} 838 839static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) 840{ 841 int port; 842 switch (arg) { 843 case ATOM_PORT_ATI: 844 port = U16(*ptr); 845 if (port < ATOM_IO_NAMES_CNT) 846 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); 847 else 848 SDEBUG(" port: %d\n", port); 849 if (!port) 850 ctx->ctx->io_mode = ATOM_IO_MM; 851 else 852 ctx->ctx->io_mode = ATOM_IO_IIO | port; 853 (*ptr) += 2; 854 break; 855 case ATOM_PORT_PCI: 856 ctx->ctx->io_mode = ATOM_IO_PCI; 857 (*ptr)++; 858 break; 859 case ATOM_PORT_SYSIO: 860 ctx->ctx->io_mode = ATOM_IO_SYSIO; 861 (*ptr)++; 862 break; 863 } 864} 865 866static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) 867{ 868 ctx->ctx->reg_block = U16(*ptr); 869 (*ptr) += 2; 870 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); 871} 872 873static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) 874{ 875 uint8_t attr = U8((*ptr)++), shift; 876 uint32_t saved, dst; 877 int dptr = *ptr; 878 attr &= 0x38; 879 attr |= atom_def_dst[attr >> 3] << 6; 880 SDEBUG(" dst: "); 881 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 882 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 883 SDEBUG(" shift: %d\n", shift); 884 dst <<= shift; 885 SDEBUG(" dst: "); 886 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 887} 888 889static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) 890{ 891 uint8_t attr = U8((*ptr)++), shift; 892 uint32_t saved, dst; 893 int dptr = *ptr; 894 attr &= 0x38; 895 attr |= atom_def_dst[attr >> 3] << 6; 896 SDEBUG(" dst: "); 897 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 898 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 899 SDEBUG(" shift: %d\n", shift); 900 dst >>= shift; 901 SDEBUG(" dst: "); 902 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 903} 904 905static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg) 906{ 907 uint8_t attr = U8((*ptr)++), shift; 908 uint32_t saved, dst; 909 int dptr = *ptr; 910 SDEBUG(" dst: "); 911 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 912 shift = atom_get_src(ctx, attr, ptr); 913 SDEBUG(" shift: %d\n", shift); 914 dst <<= shift; 915 SDEBUG(" dst: "); 916 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 917} 918 919static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) 920{ 921 uint8_t attr = U8((*ptr)++), shift; 922 uint32_t saved, dst; 923 int dptr = *ptr; 924 SDEBUG(" dst: "); 925 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 926 shift = atom_get_src(ctx, attr, ptr); 927 SDEBUG(" shift: %d\n", shift); 928 dst >>= shift; 929 SDEBUG(" dst: "); 930 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 931} 932 933static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) 934{ 935 uint8_t attr = U8((*ptr)++); 936 uint32_t dst, src, saved; 937 int dptr = *ptr; 938 SDEBUG(" dst: "); 939 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 940 SDEBUG(" src: "); 941 src = atom_get_src(ctx, attr, ptr); 942 dst -= src; 943 SDEBUG(" dst: "); 944 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 945} 946 947static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) 948{ 949 uint8_t attr = U8((*ptr)++); 950 uint32_t src, val, target; 951 SDEBUG(" switch: "); 952 src = atom_get_src(ctx, attr, ptr); 953 while (U16(*ptr) != ATOM_CASE_END) 954 if (U8(*ptr) == ATOM_CASE_MAGIC) { 955 (*ptr)++; 956 SDEBUG(" case: "); 957 val = 958 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, 959 ptr); 960 target = U16(*ptr); 961 if (val == src) { 962 SDEBUG(" target: %04X\n", target); 963 *ptr = ctx->start + target; 964 return; 965 } 966 (*ptr) += 2; 967 } else { 968 printk(KERN_INFO "Bad case.\n"); 969 return; 970 } 971 (*ptr) += 2; 972} 973 974static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) 975{ 976 uint8_t attr = U8((*ptr)++); 977 uint32_t dst, src; 978 SDEBUG(" src1: "); 979 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 980 SDEBUG(" src2: "); 981 src = atom_get_src(ctx, attr, ptr); 982 ctx->ctx->cs_equal = ((dst & src) == 0); 983 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); 984} 985 986static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) 987{ 988 uint8_t attr = U8((*ptr)++); 989 uint32_t dst, src, saved; 990 int dptr = *ptr; 991 SDEBUG(" dst: "); 992 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 993 SDEBUG(" src: "); 994 src = atom_get_src(ctx, attr, ptr); 995 dst ^= src; 996 SDEBUG(" dst: "); 997 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 998} 999 1000static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) 1001{ 1002 printk(KERN_INFO "unimplemented!\n"); 1003} 1004 1005static struct { 1006 void (*func) (atom_exec_context *, int *, int); 1007 int arg; 1008} opcode_table[ATOM_OP_CNT] = { 1009 { 1010 NULL, 0}, { 1011 atom_op_move, ATOM_ARG_REG}, { 1012 atom_op_move, ATOM_ARG_PS}, { 1013 atom_op_move, ATOM_ARG_WS}, { 1014 atom_op_move, ATOM_ARG_FB}, { 1015 atom_op_move, ATOM_ARG_PLL}, { 1016 atom_op_move, ATOM_ARG_MC}, { 1017 atom_op_and, ATOM_ARG_REG}, { 1018 atom_op_and, ATOM_ARG_PS}, { 1019 atom_op_and, ATOM_ARG_WS}, { 1020 atom_op_and, ATOM_ARG_FB}, { 1021 atom_op_and, ATOM_ARG_PLL}, { 1022 atom_op_and, ATOM_ARG_MC}, { 1023 atom_op_or, ATOM_ARG_REG}, { 1024 atom_op_or, ATOM_ARG_PS}, { 1025 atom_op_or, ATOM_ARG_WS}, { 1026 atom_op_or, ATOM_ARG_FB}, { 1027 atom_op_or, ATOM_ARG_PLL}, { 1028 atom_op_or, ATOM_ARG_MC}, { 1029 atom_op_shift_left, ATOM_ARG_REG}, { 1030 atom_op_shift_left, ATOM_ARG_PS}, { 1031 atom_op_shift_left, ATOM_ARG_WS}, { 1032 atom_op_shift_left, ATOM_ARG_FB}, { 1033 atom_op_shift_left, ATOM_ARG_PLL}, { 1034 atom_op_shift_left, ATOM_ARG_MC}, { 1035 atom_op_shift_right, ATOM_ARG_REG}, { 1036 atom_op_shift_right, ATOM_ARG_PS}, { 1037 atom_op_shift_right, ATOM_ARG_WS}, { 1038 atom_op_shift_right, ATOM_ARG_FB}, { 1039 atom_op_shift_right, ATOM_ARG_PLL}, { 1040 atom_op_shift_right, ATOM_ARG_MC}, { 1041 atom_op_mul, ATOM_ARG_REG}, { 1042 atom_op_mul, ATOM_ARG_PS}, { 1043 atom_op_mul, ATOM_ARG_WS}, { 1044 atom_op_mul, ATOM_ARG_FB}, { 1045 atom_op_mul, ATOM_ARG_PLL}, { 1046 atom_op_mul, ATOM_ARG_MC}, { 1047 atom_op_div, ATOM_ARG_REG}, { 1048 atom_op_div, ATOM_ARG_PS}, { 1049 atom_op_div, ATOM_ARG_WS}, { 1050 atom_op_div, ATOM_ARG_FB}, { 1051 atom_op_div, ATOM_ARG_PLL}, { 1052 atom_op_div, ATOM_ARG_MC}, { 1053 atom_op_add, ATOM_ARG_REG}, { 1054 atom_op_add, ATOM_ARG_PS}, { 1055 atom_op_add, ATOM_ARG_WS}, { 1056 atom_op_add, ATOM_ARG_FB}, { 1057 atom_op_add, ATOM_ARG_PLL}, { 1058 atom_op_add, ATOM_ARG_MC}, { 1059 atom_op_sub, ATOM_ARG_REG}, { 1060 atom_op_sub, ATOM_ARG_PS}, { 1061 atom_op_sub, ATOM_ARG_WS}, { 1062 atom_op_sub, ATOM_ARG_FB}, { 1063 atom_op_sub, ATOM_ARG_PLL}, { 1064 atom_op_sub, ATOM_ARG_MC}, { 1065 atom_op_setport, ATOM_PORT_ATI}, { 1066 atom_op_setport, ATOM_PORT_PCI}, { 1067 atom_op_setport, ATOM_PORT_SYSIO}, { 1068 atom_op_setregblock, 0}, { 1069 atom_op_setfbbase, 0}, { 1070 atom_op_compare, ATOM_ARG_REG}, { 1071 atom_op_compare, ATOM_ARG_PS}, { 1072 atom_op_compare, ATOM_ARG_WS}, { 1073 atom_op_compare, ATOM_ARG_FB}, { 1074 atom_op_compare, ATOM_ARG_PLL}, { 1075 atom_op_compare, ATOM_ARG_MC}, { 1076 atom_op_switch, 0}, { 1077 atom_op_jump, ATOM_COND_ALWAYS}, { 1078 atom_op_jump, ATOM_COND_EQUAL}, { 1079 atom_op_jump, ATOM_COND_BELOW}, { 1080 atom_op_jump, ATOM_COND_ABOVE}, { 1081 atom_op_jump, ATOM_COND_BELOWOREQUAL}, { 1082 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { 1083 atom_op_jump, ATOM_COND_NOTEQUAL}, { 1084 atom_op_test, ATOM_ARG_REG}, { 1085 atom_op_test, ATOM_ARG_PS}, { 1086 atom_op_test, ATOM_ARG_WS}, { 1087 atom_op_test, ATOM_ARG_FB}, { 1088 atom_op_test, ATOM_ARG_PLL}, { 1089 atom_op_test, ATOM_ARG_MC}, { 1090 atom_op_delay, ATOM_UNIT_MILLISEC}, { 1091 atom_op_delay, ATOM_UNIT_MICROSEC}, { 1092 atom_op_calltable, 0}, { 1093 atom_op_repeat, 0}, { 1094 atom_op_clear, ATOM_ARG_REG}, { 1095 atom_op_clear, ATOM_ARG_PS}, { 1096 atom_op_clear, ATOM_ARG_WS}, { 1097 atom_op_clear, ATOM_ARG_FB}, { 1098 atom_op_clear, ATOM_ARG_PLL}, { 1099 atom_op_clear, ATOM_ARG_MC}, { 1100 atom_op_nop, 0}, { 1101 atom_op_eot, 0}, { 1102 atom_op_mask, ATOM_ARG_REG}, { 1103 atom_op_mask, ATOM_ARG_PS}, { 1104 atom_op_mask, ATOM_ARG_WS}, { 1105 atom_op_mask, ATOM_ARG_FB}, { 1106 atom_op_mask, ATOM_ARG_PLL}, { 1107 atom_op_mask, ATOM_ARG_MC}, { 1108 atom_op_postcard, 0}, { 1109 atom_op_beep, 0}, { 1110 atom_op_savereg, 0}, { 1111 atom_op_restorereg, 0}, { 1112 atom_op_setdatablock, 0}, { 1113 atom_op_xor, ATOM_ARG_REG}, { 1114 atom_op_xor, ATOM_ARG_PS}, { 1115 atom_op_xor, ATOM_ARG_WS}, { 1116 atom_op_xor, ATOM_ARG_FB}, { 1117 atom_op_xor, ATOM_ARG_PLL}, { 1118 atom_op_xor, ATOM_ARG_MC}, { 1119 atom_op_shl, ATOM_ARG_REG}, { 1120 atom_op_shl, ATOM_ARG_PS}, { 1121 atom_op_shl, ATOM_ARG_WS}, { 1122 atom_op_shl, ATOM_ARG_FB}, { 1123 atom_op_shl, ATOM_ARG_PLL}, { 1124 atom_op_shl, ATOM_ARG_MC}, { 1125 atom_op_shr, ATOM_ARG_REG}, { 1126 atom_op_shr, ATOM_ARG_PS}, { 1127 atom_op_shr, ATOM_ARG_WS}, { 1128 atom_op_shr, ATOM_ARG_FB}, { 1129 atom_op_shr, ATOM_ARG_PLL}, { 1130 atom_op_shr, ATOM_ARG_MC}, { 1131atom_op_debug, 0},}; 1132 1133static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) 1134{ 1135 int base = CU16(ctx->cmd_table + 4 + 2 * index); 1136 int len, ws, ps, ptr; 1137 unsigned char op; 1138 atom_exec_context ectx; 1139 1140 if (!base) 1141 return -EINVAL; 1142 1143 len = CU16(base + ATOM_CT_SIZE_PTR); 1144 ws = CU8(base + ATOM_CT_WS_PTR); 1145 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; 1146 ptr = base + ATOM_CT_CODE_PTR; 1147 1148 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); 1149 1150 ectx.ctx = ctx; 1151 ectx.ps_shift = ps / 4; 1152 ectx.start = base; 1153 ectx.ps = params; 1154 ectx.abort = false; 1155 ectx.last_jump = 0; 1156 if (ws) 1157 ectx.ws = kzalloc(4 * ws, GFP_KERNEL); 1158 else 1159 ectx.ws = NULL; 1160 1161 debug_depth++; 1162 while (1) { 1163 op = CU8(ptr++); 1164 if (op < ATOM_OP_NAMES_CNT) 1165 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); 1166 else 1167 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); 1168 if (ectx.abort) { 1169 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", 1170 base, len, ws, ps, ptr - 1); 1171 return -EINVAL; 1172 } 1173 1174 if (op < ATOM_OP_CNT && op > 0) 1175 opcode_table[op].func(&ectx, &ptr, 1176 opcode_table[op].arg); 1177 else 1178 break; 1179 1180 if (op == ATOM_OP_EOT) 1181 break; 1182 } 1183 debug_depth--; 1184 SDEBUG("<<\n"); 1185 1186 if (ws) 1187 kfree(ectx.ws); 1188 return 0; 1189} 1190 1191int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) 1192{ 1193 int r; 1194 1195 mutex_lock(&ctx->mutex); 1196 /* reset reg block */ 1197 ctx->reg_block = 0; 1198 /* reset fb window */ 1199 ctx->fb_base = 0; 1200 /* reset io mode */ 1201 ctx->io_mode = ATOM_IO_MM; 1202 r = atom_execute_table_locked(ctx, index, params); 1203 mutex_unlock(&ctx->mutex); 1204 return r; 1205} 1206 1207static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; 1208 1209static void atom_index_iio(struct atom_context *ctx, int base) 1210{ 1211 ctx->iio = kzalloc(2 * 256, GFP_KERNEL); 1212 while (CU8(base) == ATOM_IIO_START) { 1213 ctx->iio[CU8(base + 1)] = base + 2; 1214 base += 2; 1215 while (CU8(base) != ATOM_IIO_END) 1216 base += atom_iio_len[CU8(base)]; 1217 base += 3; 1218 } 1219} 1220 1221struct atom_context *atom_parse(struct card_info *card, void *bios) 1222{ 1223 int base; 1224 struct atom_context *ctx = 1225 kzalloc(sizeof(struct atom_context), GFP_KERNEL); 1226 char *str; 1227 char name[512]; 1228 int i; 1229 1230 ctx->card = card; 1231 ctx->bios = bios; 1232 1233 if (CU16(0) != ATOM_BIOS_MAGIC) { 1234 printk(KERN_INFO "Invalid BIOS magic.\n"); 1235 kfree(ctx); 1236 return NULL; 1237 } 1238 if (strncmp 1239 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, 1240 strlen(ATOM_ATI_MAGIC))) { 1241 printk(KERN_INFO "Invalid ATI magic.\n"); 1242 kfree(ctx); 1243 return NULL; 1244 } 1245 1246 base = CU16(ATOM_ROM_TABLE_PTR); 1247 if (strncmp 1248 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, 1249 strlen(ATOM_ROM_MAGIC))) { 1250 printk(KERN_INFO "Invalid ATOM magic.\n"); 1251 kfree(ctx); 1252 return NULL; 1253 } 1254 1255 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); 1256 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); 1257 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); 1258 1259 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); 1260 while (*str && ((*str == '\n') || (*str == '\r'))) 1261 str++; 1262 /* name string isn't always 0 terminated */ 1263 for (i = 0; i < 511; i++) { 1264 name[i] = str[i]; 1265 if (name[i] < '.' || name[i] > 'z') { 1266 name[i] = 0; 1267 break; 1268 } 1269 } 1270 printk(KERN_INFO "ATOM BIOS: %s\n", name); 1271 1272 return ctx; 1273} 1274 1275int atom_asic_init(struct atom_context *ctx) 1276{ 1277 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); 1278 uint32_t ps[16]; 1279 memset(ps, 0, 64); 1280 1281 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); 1282 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); 1283 if (!ps[0] || !ps[1]) 1284 return 1; 1285 1286 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) 1287 return 1; 1288 return atom_execute_table(ctx, ATOM_CMD_INIT, ps); 1289} 1290 1291void atom_destroy(struct atom_context *ctx) 1292{ 1293 if (ctx->iio) 1294 kfree(ctx->iio); 1295 kfree(ctx); 1296} 1297 1298bool atom_parse_data_header(struct atom_context *ctx, int index, 1299 uint16_t * size, uint8_t * frev, uint8_t * crev, 1300 uint16_t * data_start) 1301{ 1302 int offset = index * 2 + 4; 1303 int idx = CU16(ctx->data_table + offset); 1304 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); 1305 1306 if (!mdt[index]) 1307 return false; 1308 1309 if (size) 1310 *size = CU16(idx); 1311 if (frev) 1312 *frev = CU8(idx + 2); 1313 if (crev) 1314 *crev = CU8(idx + 3); 1315 *data_start = idx; 1316 return true; 1317} 1318 1319bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, 1320 uint8_t * crev) 1321{ 1322 int offset = index * 2 + 4; 1323 int idx = CU16(ctx->cmd_table + offset); 1324 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); 1325 1326 if (!mct[index]) 1327 return false; 1328 1329 if (frev) 1330 *frev = CU8(idx + 2); 1331 if (crev) 1332 *crev = CU8(idx + 3); 1333 return true; 1334} 1335 1336int atom_allocate_fb_scratch(struct atom_context *ctx) 1337{ 1338 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); 1339 uint16_t data_offset; 1340 int usage_bytes = 0; 1341 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; 1342 1343 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { 1344 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); 1345 1346 DRM_DEBUG("atom firmware requested %08x %dkb\n", 1347 firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware, 1348 firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb); 1349 1350 usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024; 1351 } 1352 if (usage_bytes == 0) 1353 usage_bytes = 20 * 1024; 1354 /* allocate some scratch memory */ 1355 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); 1356 if (!ctx->scratch) 1357 return -ENOMEM; 1358 return 0; 1359} 1360