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 <linux/slab.h> 28#include <asm/unaligned.h> 29 30#define ATOM_DEBUG 31 32#include "atom.h" 33#include "atom-names.h" 34#include "atom-bits.h" 35 36#define ATOM_COND_ABOVE 0 37#define ATOM_COND_ABOVEOREQUAL 1 38#define ATOM_COND_ALWAYS 2 39#define ATOM_COND_BELOW 3 40#define ATOM_COND_BELOWOREQUAL 4 41#define ATOM_COND_EQUAL 5 42#define ATOM_COND_NOTEQUAL 6 43 44#define ATOM_PORT_ATI 0 45#define ATOM_PORT_PCI 1 46#define ATOM_PORT_SYSIO 2 47 48#define ATOM_UNIT_MICROSEC 0 49#define ATOM_UNIT_MILLISEC 1 50 51#define PLL_INDEX 2 52#define PLL_DATA 3 53 54typedef struct { 55 struct atom_context *ctx; 56 uint32_t *ps, *ws; 57 int ps_shift; 58 uint16_t start; 59 unsigned last_jump; 60 unsigned long last_jump_jiffies; 61 bool abort; 62} atom_exec_context; 63 64int atom_debug = 0; 65static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); 66int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); 67 68static uint32_t atom_arg_mask[8] = 69 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000, 700xFF000000 }; 71static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 }; 72 73static int atom_dst_to_src[8][4] = { 74 /* translate destination alignment field to the source alignment encoding */ 75 {0, 0, 0, 0}, 76 {1, 2, 3, 0}, 77 {1, 2, 3, 0}, 78 {1, 2, 3, 0}, 79 {4, 5, 6, 7}, 80 {4, 5, 6, 7}, 81 {4, 5, 6, 7}, 82 {4, 5, 6, 7}, 83}; 84static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 }; 85 86static int debug_depth = 0; 87#ifdef ATOM_DEBUG 88static void debug_print_spaces(int n) 89{ 90 while (n--) 91 printk(" "); 92} 93 94#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) 95#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) 96#else 97#define DEBUG(...) do { } while (0) 98#define SDEBUG(...) do { } while (0) 99#endif 100 101static uint32_t atom_iio_execute(struct atom_context *ctx, int base, 102 uint32_t index, uint32_t data) 103{ 104 uint32_t temp = 0xCDCDCDCD; 105 while (1) 106 switch (CU8(base)) { 107 case ATOM_IIO_NOP: 108 base++; 109 break; 110 case ATOM_IIO_READ: 111 temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 112 base += 3; 113 break; 114 case ATOM_IIO_WRITE: 115 (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 116 ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp); 117 base += 3; 118 break; 119 case ATOM_IIO_CLEAR: 120 temp &= 121 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 122 CU8(base + 2)); 123 base += 3; 124 break; 125 case ATOM_IIO_SET: 126 temp |= 127 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + 128 2); 129 base += 3; 130 break; 131 case ATOM_IIO_MOVE_INDEX: 132 temp &= 133 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 134 CU8(base + 2)); 135 temp |= 136 ((index >> CU8(base + 2)) & 137 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 138 3); 139 base += 4; 140 break; 141 case ATOM_IIO_MOVE_DATA: 142 temp &= 143 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 144 CU8(base + 2)); 145 temp |= 146 ((data >> CU8(base + 2)) & 147 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 148 3); 149 base += 4; 150 break; 151 case ATOM_IIO_MOVE_ATTR: 152 temp &= 153 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 154 CU8(base + 2)); 155 temp |= 156 ((ctx-> 157 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - 158 CU8 159 (base 160 + 161 1)))) 162 << CU8(base + 3); 163 base += 4; 164 break; 165 case ATOM_IIO_END: 166 return temp; 167 default: 168 printk(KERN_INFO "Unknown IIO opcode.\n"); 169 return 0; 170 } 171} 172 173static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, 174 int *ptr, uint32_t *saved, int print) 175{ 176 uint32_t idx, val = 0xCDCDCDCD, align, arg; 177 struct atom_context *gctx = ctx->ctx; 178 arg = attr & 7; 179 align = (attr >> 3) & 7; 180 switch (arg) { 181 case ATOM_ARG_REG: 182 idx = U16(*ptr); 183 (*ptr) += 2; 184 if (print) 185 DEBUG("REG[0x%04X]", idx); 186 idx += gctx->reg_block; 187 switch (gctx->io_mode) { 188 case ATOM_IO_MM: 189 val = gctx->card->reg_read(gctx->card, idx); 190 break; 191 case ATOM_IO_PCI: 192 printk(KERN_INFO 193 "PCI registers are not implemented.\n"); 194 return 0; 195 case ATOM_IO_SYSIO: 196 printk(KERN_INFO 197 "SYSIO registers are not implemented.\n"); 198 return 0; 199 default: 200 if (!(gctx->io_mode & 0x80)) { 201 printk(KERN_INFO "Bad IO mode.\n"); 202 return 0; 203 } 204 if (!gctx->iio[gctx->io_mode & 0x7F]) { 205 printk(KERN_INFO 206 "Undefined indirect IO read method %d.\n", 207 gctx->io_mode & 0x7F); 208 return 0; 209 } 210 val = 211 atom_iio_execute(gctx, 212 gctx->iio[gctx->io_mode & 0x7F], 213 idx, 0); 214 } 215 break; 216 case ATOM_ARG_PS: 217 idx = U8(*ptr); 218 (*ptr)++; 219 /* get_unaligned_le32 avoids unaligned accesses from atombios 220 * tables, noticed on a DEC Alpha. */ 221 val = get_unaligned_le32((u32 *)&ctx->ps[idx]); 222 if (print) 223 DEBUG("PS[0x%02X,0x%04X]", idx, val); 224 break; 225 case ATOM_ARG_WS: 226 idx = U8(*ptr); 227 (*ptr)++; 228 if (print) 229 DEBUG("WS[0x%02X]", idx); 230 switch (idx) { 231 case ATOM_WS_QUOTIENT: 232 val = gctx->divmul[0]; 233 break; 234 case ATOM_WS_REMAINDER: 235 val = gctx->divmul[1]; 236 break; 237 case ATOM_WS_DATAPTR: 238 val = gctx->data_block; 239 break; 240 case ATOM_WS_SHIFT: 241 val = gctx->shift; 242 break; 243 case ATOM_WS_OR_MASK: 244 val = 1 << gctx->shift; 245 break; 246 case ATOM_WS_AND_MASK: 247 val = ~(1 << gctx->shift); 248 break; 249 case ATOM_WS_FB_WINDOW: 250 val = gctx->fb_base; 251 break; 252 case ATOM_WS_ATTRIBUTES: 253 val = gctx->io_attr; 254 break; 255 case ATOM_WS_REGPTR: 256 val = gctx->reg_block; 257 break; 258 default: 259 val = ctx->ws[idx]; 260 } 261 break; 262 case ATOM_ARG_ID: 263 idx = U16(*ptr); 264 (*ptr) += 2; 265 if (print) { 266 if (gctx->data_block) 267 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); 268 else 269 DEBUG("ID[0x%04X]", idx); 270 } 271 val = U32(idx + gctx->data_block); 272 break; 273 case ATOM_ARG_FB: 274 idx = U8(*ptr); 275 (*ptr)++; 276 val = gctx->scratch[((gctx->fb_base + idx) / 4)]; 277 if (print) 278 DEBUG("FB[0x%02X]", idx); 279 break; 280 case ATOM_ARG_IMM: 281 switch (align) { 282 case ATOM_SRC_DWORD: 283 val = U32(*ptr); 284 (*ptr) += 4; 285 if (print) 286 DEBUG("IMM 0x%08X\n", val); 287 return val; 288 case ATOM_SRC_WORD0: 289 case ATOM_SRC_WORD8: 290 case ATOM_SRC_WORD16: 291 val = U16(*ptr); 292 (*ptr) += 2; 293 if (print) 294 DEBUG("IMM 0x%04X\n", val); 295 return val; 296 case ATOM_SRC_BYTE0: 297 case ATOM_SRC_BYTE8: 298 case ATOM_SRC_BYTE16: 299 case ATOM_SRC_BYTE24: 300 val = U8(*ptr); 301 (*ptr)++; 302 if (print) 303 DEBUG("IMM 0x%02X\n", val); 304 return val; 305 } 306 return 0; 307 case ATOM_ARG_PLL: 308 idx = U8(*ptr); 309 (*ptr)++; 310 if (print) 311 DEBUG("PLL[0x%02X]", idx); 312 val = gctx->card->pll_read(gctx->card, idx); 313 break; 314 case ATOM_ARG_MC: 315 idx = U8(*ptr); 316 (*ptr)++; 317 if (print) 318 DEBUG("MC[0x%02X]", idx); 319 val = gctx->card->mc_read(gctx->card, idx); 320 break; 321 } 322 if (saved) 323 *saved = val; 324 val &= atom_arg_mask[align]; 325 val >>= atom_arg_shift[align]; 326 if (print) 327 switch (align) { 328 case ATOM_SRC_DWORD: 329 DEBUG(".[31:0] -> 0x%08X\n", val); 330 break; 331 case ATOM_SRC_WORD0: 332 DEBUG(".[15:0] -> 0x%04X\n", val); 333 break; 334 case ATOM_SRC_WORD8: 335 DEBUG(".[23:8] -> 0x%04X\n", val); 336 break; 337 case ATOM_SRC_WORD16: 338 DEBUG(".[31:16] -> 0x%04X\n", val); 339 break; 340 case ATOM_SRC_BYTE0: 341 DEBUG(".[7:0] -> 0x%02X\n", val); 342 break; 343 case ATOM_SRC_BYTE8: 344 DEBUG(".[15:8] -> 0x%02X\n", val); 345 break; 346 case ATOM_SRC_BYTE16: 347 DEBUG(".[23:16] -> 0x%02X\n", val); 348 break; 349 case ATOM_SRC_BYTE24: 350 DEBUG(".[31:24] -> 0x%02X\n", val); 351 break; 352 } 353 return val; 354} 355 356static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) 357{ 358 uint32_t align = (attr >> 3) & 7, arg = attr & 7; 359 switch (arg) { 360 case ATOM_ARG_REG: 361 case ATOM_ARG_ID: 362 (*ptr) += 2; 363 break; 364 case ATOM_ARG_PLL: 365 case ATOM_ARG_MC: 366 case ATOM_ARG_PS: 367 case ATOM_ARG_WS: 368 case ATOM_ARG_FB: 369 (*ptr)++; 370 break; 371 case ATOM_ARG_IMM: 372 switch (align) { 373 case ATOM_SRC_DWORD: 374 (*ptr) += 4; 375 return; 376 case ATOM_SRC_WORD0: 377 case ATOM_SRC_WORD8: 378 case ATOM_SRC_WORD16: 379 (*ptr) += 2; 380 return; 381 case ATOM_SRC_BYTE0: 382 case ATOM_SRC_BYTE8: 383 case ATOM_SRC_BYTE16: 384 case ATOM_SRC_BYTE24: 385 (*ptr)++; 386 return; 387 } 388 return; 389 } 390} 391 392static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) 393{ 394 return atom_get_src_int(ctx, attr, ptr, NULL, 1); 395} 396 397static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) 398{ 399 uint32_t val = 0xCDCDCDCD; 400 401 switch (align) { 402 case ATOM_SRC_DWORD: 403 val = U32(*ptr); 404 (*ptr) += 4; 405 break; 406 case ATOM_SRC_WORD0: 407 case ATOM_SRC_WORD8: 408 case ATOM_SRC_WORD16: 409 val = U16(*ptr); 410 (*ptr) += 2; 411 break; 412 case ATOM_SRC_BYTE0: 413 case ATOM_SRC_BYTE8: 414 case ATOM_SRC_BYTE16: 415 case ATOM_SRC_BYTE24: 416 val = U8(*ptr); 417 (*ptr)++; 418 break; 419 } 420 return val; 421} 422 423static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, 424 int *ptr, uint32_t *saved, int print) 425{ 426 return atom_get_src_int(ctx, 427 arg | atom_dst_to_src[(attr >> 3) & 428 7][(attr >> 6) & 3] << 3, 429 ptr, saved, print); 430} 431 432static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) 433{ 434 atom_skip_src_int(ctx, 435 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 436 3] << 3, ptr); 437} 438 439static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, 440 int *ptr, uint32_t val, uint32_t saved) 441{ 442 uint32_t align = 443 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = 444 val, idx; 445 struct atom_context *gctx = ctx->ctx; 446 old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; 447 val <<= atom_arg_shift[align]; 448 val &= atom_arg_mask[align]; 449 saved &= ~atom_arg_mask[align]; 450 val |= saved; 451 switch (arg) { 452 case ATOM_ARG_REG: 453 idx = U16(*ptr); 454 (*ptr) += 2; 455 DEBUG("REG[0x%04X]", idx); 456 idx += gctx->reg_block; 457 switch (gctx->io_mode) { 458 case ATOM_IO_MM: 459 if (idx == 0) 460 gctx->card->reg_write(gctx->card, idx, 461 val << 2); 462 else 463 gctx->card->reg_write(gctx->card, idx, val); 464 break; 465 case ATOM_IO_PCI: 466 printk(KERN_INFO 467 "PCI registers are not implemented.\n"); 468 return; 469 case ATOM_IO_SYSIO: 470 printk(KERN_INFO 471 "SYSIO registers are not implemented.\n"); 472 return; 473 default: 474 if (!(gctx->io_mode & 0x80)) { 475 printk(KERN_INFO "Bad IO mode.\n"); 476 return; 477 } 478 if (!gctx->iio[gctx->io_mode & 0xFF]) { 479 printk(KERN_INFO 480 "Undefined indirect IO write method %d.\n", 481 gctx->io_mode & 0x7F); 482 return; 483 } 484 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], 485 idx, val); 486 } 487 break; 488 case ATOM_ARG_PS: 489 idx = U8(*ptr); 490 (*ptr)++; 491 DEBUG("PS[0x%02X]", idx); 492 ctx->ps[idx] = cpu_to_le32(val); 493 break; 494 case ATOM_ARG_WS: 495 idx = U8(*ptr); 496 (*ptr)++; 497 DEBUG("WS[0x%02X]", idx); 498 switch (idx) { 499 case ATOM_WS_QUOTIENT: 500 gctx->divmul[0] = val; 501 break; 502 case ATOM_WS_REMAINDER: 503 gctx->divmul[1] = val; 504 break; 505 case ATOM_WS_DATAPTR: 506 gctx->data_block = val; 507 break; 508 case ATOM_WS_SHIFT: 509 gctx->shift = val; 510 break; 511 case ATOM_WS_OR_MASK: 512 case ATOM_WS_AND_MASK: 513 break; 514 case ATOM_WS_FB_WINDOW: 515 gctx->fb_base = val; 516 break; 517 case ATOM_WS_ATTRIBUTES: 518 gctx->io_attr = val; 519 break; 520 case ATOM_WS_REGPTR: 521 gctx->reg_block = val; 522 break; 523 default: 524 ctx->ws[idx] = val; 525 } 526 break; 527 case ATOM_ARG_FB: 528 idx = U8(*ptr); 529 (*ptr)++; 530 gctx->scratch[((gctx->fb_base + idx) / 4)] = val; 531 DEBUG("FB[0x%02X]", idx); 532 break; 533 case ATOM_ARG_PLL: 534 idx = U8(*ptr); 535 (*ptr)++; 536 DEBUG("PLL[0x%02X]", idx); 537 gctx->card->pll_write(gctx->card, idx, val); 538 break; 539 case ATOM_ARG_MC: 540 idx = U8(*ptr); 541 (*ptr)++; 542 DEBUG("MC[0x%02X]", idx); 543 gctx->card->mc_write(gctx->card, idx, val); 544 return; 545 } 546 switch (align) { 547 case ATOM_SRC_DWORD: 548 DEBUG(".[31:0] <- 0x%08X\n", old_val); 549 break; 550 case ATOM_SRC_WORD0: 551 DEBUG(".[15:0] <- 0x%04X\n", old_val); 552 break; 553 case ATOM_SRC_WORD8: 554 DEBUG(".[23:8] <- 0x%04X\n", old_val); 555 break; 556 case ATOM_SRC_WORD16: 557 DEBUG(".[31:16] <- 0x%04X\n", old_val); 558 break; 559 case ATOM_SRC_BYTE0: 560 DEBUG(".[7:0] <- 0x%02X\n", old_val); 561 break; 562 case ATOM_SRC_BYTE8: 563 DEBUG(".[15:8] <- 0x%02X\n", old_val); 564 break; 565 case ATOM_SRC_BYTE16: 566 DEBUG(".[23:16] <- 0x%02X\n", old_val); 567 break; 568 case ATOM_SRC_BYTE24: 569 DEBUG(".[31:24] <- 0x%02X\n", old_val); 570 break; 571 } 572} 573 574static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg) 575{ 576 uint8_t attr = U8((*ptr)++); 577 uint32_t dst, src, saved; 578 int dptr = *ptr; 579 SDEBUG(" dst: "); 580 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 581 SDEBUG(" src: "); 582 src = atom_get_src(ctx, attr, ptr); 583 dst += src; 584 SDEBUG(" dst: "); 585 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 586} 587 588static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg) 589{ 590 uint8_t attr = U8((*ptr)++); 591 uint32_t dst, src, saved; 592 int dptr = *ptr; 593 SDEBUG(" dst: "); 594 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 595 SDEBUG(" src: "); 596 src = atom_get_src(ctx, attr, ptr); 597 dst &= src; 598 SDEBUG(" dst: "); 599 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 600} 601 602static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) 603{ 604 printk("ATOM BIOS beeped!\n"); 605} 606 607static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) 608{ 609 int idx = U8((*ptr)++); 610 int r = 0; 611 612 if (idx < ATOM_TABLE_NAMES_CNT) 613 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); 614 else 615 SDEBUG(" table: %d\n", idx); 616 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) 617 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); 618 if (r) { 619 ctx->abort = true; 620 } 621} 622 623static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) 624{ 625 uint8_t attr = U8((*ptr)++); 626 uint32_t saved; 627 int dptr = *ptr; 628 attr &= 0x38; 629 attr |= atom_def_dst[attr >> 3] << 6; 630 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 631 SDEBUG(" dst: "); 632 atom_put_dst(ctx, arg, attr, &dptr, 0, saved); 633} 634 635static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) 636{ 637 uint8_t attr = U8((*ptr)++); 638 uint32_t dst, src; 639 SDEBUG(" src1: "); 640 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 641 SDEBUG(" src2: "); 642 src = atom_get_src(ctx, attr, ptr); 643 ctx->ctx->cs_equal = (dst == src); 644 ctx->ctx->cs_above = (dst > src); 645 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", 646 ctx->ctx->cs_above ? "GT" : "LE"); 647} 648 649static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) 650{ 651 uint8_t count = U8((*ptr)++); 652 SDEBUG(" count: %d\n", count); 653 if (arg == ATOM_UNIT_MICROSEC) 654 udelay(count); 655 else 656 schedule_timeout_uninterruptible(msecs_to_jiffies(count)); 657} 658 659static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) 660{ 661 uint8_t attr = U8((*ptr)++); 662 uint32_t dst, src; 663 SDEBUG(" src1: "); 664 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 665 SDEBUG(" src2: "); 666 src = atom_get_src(ctx, attr, ptr); 667 if (src != 0) { 668 ctx->ctx->divmul[0] = dst / src; 669 ctx->ctx->divmul[1] = dst % src; 670 } else { 671 ctx->ctx->divmul[0] = 0; 672 ctx->ctx->divmul[1] = 0; 673 } 674} 675 676static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) 677{ 678 /* functionally, a nop */ 679} 680 681static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) 682{ 683 int execute = 0, target = U16(*ptr); 684 unsigned long cjiffies; 685 686 (*ptr) += 2; 687 switch (arg) { 688 case ATOM_COND_ABOVE: 689 execute = ctx->ctx->cs_above; 690 break; 691 case ATOM_COND_ABOVEOREQUAL: 692 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; 693 break; 694 case ATOM_COND_ALWAYS: 695 execute = 1; 696 break; 697 case ATOM_COND_BELOW: 698 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); 699 break; 700 case ATOM_COND_BELOWOREQUAL: 701 execute = !ctx->ctx->cs_above; 702 break; 703 case ATOM_COND_EQUAL: 704 execute = ctx->ctx->cs_equal; 705 break; 706 case ATOM_COND_NOTEQUAL: 707 execute = !ctx->ctx->cs_equal; 708 break; 709 } 710 if (arg != ATOM_COND_ALWAYS) 711 SDEBUG(" taken: %s\n", execute ? "yes" : "no"); 712 SDEBUG(" target: 0x%04X\n", target); 713 if (execute) { 714 if (ctx->last_jump == (ctx->start + target)) { 715 cjiffies = jiffies; 716 if (time_after(cjiffies, ctx->last_jump_jiffies)) { 717 cjiffies -= ctx->last_jump_jiffies; 718 if ((jiffies_to_msecs(cjiffies) > 5000)) { 719 DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n"); 720 ctx->abort = true; 721 } 722 } else { 723 /* jiffies wrap around we will just wait a little longer */ 724 ctx->last_jump_jiffies = jiffies; 725 } 726 } else { 727 ctx->last_jump = ctx->start + target; 728 ctx->last_jump_jiffies = jiffies; 729 } 730 *ptr = ctx->start + target; 731 } 732} 733 734static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) 735{ 736 uint8_t attr = U8((*ptr)++); 737 uint32_t dst, src1, src2, saved; 738 int dptr = *ptr; 739 SDEBUG(" dst: "); 740 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 741 SDEBUG(" src1: "); 742 src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); 743 SDEBUG(" src2: "); 744 src2 = atom_get_src(ctx, attr, ptr); 745 dst &= src1; 746 dst |= src2; 747 SDEBUG(" dst: "); 748 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 749} 750 751static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) 752{ 753 uint8_t attr = U8((*ptr)++); 754 uint32_t src, saved; 755 int dptr = *ptr; 756 if (((attr >> 3) & 7) != ATOM_SRC_DWORD) 757 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 758 else { 759 atom_skip_dst(ctx, arg, attr, ptr); 760 saved = 0xCDCDCDCD; 761 } 762 SDEBUG(" src: "); 763 src = atom_get_src(ctx, attr, ptr); 764 SDEBUG(" dst: "); 765 atom_put_dst(ctx, arg, attr, &dptr, src, saved); 766} 767 768static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) 769{ 770 uint8_t attr = U8((*ptr)++); 771 uint32_t dst, src; 772 SDEBUG(" src1: "); 773 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 774 SDEBUG(" src2: "); 775 src = atom_get_src(ctx, attr, ptr); 776 ctx->ctx->divmul[0] = dst * src; 777} 778 779static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) 780{ 781 /* nothing */ 782} 783 784static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) 785{ 786 uint8_t attr = U8((*ptr)++); 787 uint32_t dst, src, saved; 788 int dptr = *ptr; 789 SDEBUG(" dst: "); 790 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 791 SDEBUG(" src: "); 792 src = atom_get_src(ctx, attr, ptr); 793 dst |= src; 794 SDEBUG(" dst: "); 795 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 796} 797 798static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) 799{ 800 uint8_t val = U8((*ptr)++); 801 SDEBUG("POST card output: 0x%02X\n", val); 802} 803 804static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) 805{ 806 printk(KERN_INFO "unimplemented!\n"); 807} 808 809static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) 810{ 811 printk(KERN_INFO "unimplemented!\n"); 812} 813 814static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) 815{ 816 printk(KERN_INFO "unimplemented!\n"); 817} 818 819static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) 820{ 821 int idx = U8(*ptr); 822 (*ptr)++; 823 SDEBUG(" block: %d\n", idx); 824 if (!idx) 825 ctx->ctx->data_block = 0; 826 else if (idx == 255) 827 ctx->ctx->data_block = ctx->start; 828 else 829 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); 830 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); 831} 832 833static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) 834{ 835 uint8_t attr = U8((*ptr)++); 836 SDEBUG(" fb_base: "); 837 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); 838} 839 840static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) 841{ 842 int port; 843 switch (arg) { 844 case ATOM_PORT_ATI: 845 port = U16(*ptr); 846 if (port < ATOM_IO_NAMES_CNT) 847 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); 848 else 849 SDEBUG(" port: %d\n", port); 850 if (!port) 851 ctx->ctx->io_mode = ATOM_IO_MM; 852 else 853 ctx->ctx->io_mode = ATOM_IO_IIO | port; 854 (*ptr) += 2; 855 break; 856 case ATOM_PORT_PCI: 857 ctx->ctx->io_mode = ATOM_IO_PCI; 858 (*ptr)++; 859 break; 860 case ATOM_PORT_SYSIO: 861 ctx->ctx->io_mode = ATOM_IO_SYSIO; 862 (*ptr)++; 863 break; 864 } 865} 866 867static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) 868{ 869 ctx->ctx->reg_block = U16(*ptr); 870 (*ptr) += 2; 871 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); 872} 873 874static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) 875{ 876 uint8_t attr = U8((*ptr)++), shift; 877 uint32_t saved, dst; 878 int dptr = *ptr; 879 attr &= 0x38; 880 attr |= atom_def_dst[attr >> 3] << 6; 881 SDEBUG(" dst: "); 882 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 883 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 884 SDEBUG(" shift: %d\n", shift); 885 dst <<= shift; 886 SDEBUG(" dst: "); 887 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 888} 889 890static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) 891{ 892 uint8_t attr = U8((*ptr)++), shift; 893 uint32_t saved, dst; 894 int dptr = *ptr; 895 attr &= 0x38; 896 attr |= atom_def_dst[attr >> 3] << 6; 897 SDEBUG(" dst: "); 898 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 899 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 900 SDEBUG(" shift: %d\n", shift); 901 dst >>= shift; 902 SDEBUG(" dst: "); 903 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 904} 905 906static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg) 907{ 908 uint8_t attr = U8((*ptr)++), shift; 909 uint32_t saved, dst; 910 int dptr = *ptr; 911 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 912 SDEBUG(" dst: "); 913 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 914 /* op needs to full dst value */ 915 dst = saved; 916 shift = atom_get_src(ctx, attr, ptr); 917 SDEBUG(" shift: %d\n", shift); 918 dst <<= shift; 919 dst &= atom_arg_mask[dst_align]; 920 dst >>= atom_arg_shift[dst_align]; 921 SDEBUG(" dst: "); 922 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 923} 924 925static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) 926{ 927 uint8_t attr = U8((*ptr)++), shift; 928 uint32_t saved, dst; 929 int dptr = *ptr; 930 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 931 SDEBUG(" dst: "); 932 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 933 /* op needs to full dst value */ 934 dst = saved; 935 shift = atom_get_src(ctx, attr, ptr); 936 SDEBUG(" shift: %d\n", shift); 937 dst >>= shift; 938 dst &= atom_arg_mask[dst_align]; 939 dst >>= atom_arg_shift[dst_align]; 940 SDEBUG(" dst: "); 941 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 942} 943 944static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) 945{ 946 uint8_t attr = U8((*ptr)++); 947 uint32_t dst, src, saved; 948 int dptr = *ptr; 949 SDEBUG(" dst: "); 950 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 951 SDEBUG(" src: "); 952 src = atom_get_src(ctx, attr, ptr); 953 dst -= src; 954 SDEBUG(" dst: "); 955 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 956} 957 958static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) 959{ 960 uint8_t attr = U8((*ptr)++); 961 uint32_t src, val, target; 962 SDEBUG(" switch: "); 963 src = atom_get_src(ctx, attr, ptr); 964 while (U16(*ptr) != ATOM_CASE_END) 965 if (U8(*ptr) == ATOM_CASE_MAGIC) { 966 (*ptr)++; 967 SDEBUG(" case: "); 968 val = 969 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, 970 ptr); 971 target = U16(*ptr); 972 if (val == src) { 973 SDEBUG(" target: %04X\n", target); 974 *ptr = ctx->start + target; 975 return; 976 } 977 (*ptr) += 2; 978 } else { 979 printk(KERN_INFO "Bad case.\n"); 980 return; 981 } 982 (*ptr) += 2; 983} 984 985static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) 986{ 987 uint8_t attr = U8((*ptr)++); 988 uint32_t dst, src; 989 SDEBUG(" src1: "); 990 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 991 SDEBUG(" src2: "); 992 src = atom_get_src(ctx, attr, ptr); 993 ctx->ctx->cs_equal = ((dst & src) == 0); 994 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); 995} 996 997static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) 998{ 999 uint8_t attr = U8((*ptr)++); 1000 uint32_t dst, src, saved; 1001 int dptr = *ptr; 1002 SDEBUG(" dst: "); 1003 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 1004 SDEBUG(" src: "); 1005 src = atom_get_src(ctx, attr, ptr); 1006 dst ^= src; 1007 SDEBUG(" dst: "); 1008 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 1009} 1010 1011static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) 1012{ 1013 printk(KERN_INFO "unimplemented!\n"); 1014} 1015 1016static struct { 1017 void (*func) (atom_exec_context *, int *, int); 1018 int arg; 1019} opcode_table[ATOM_OP_CNT] = { 1020 { 1021 NULL, 0}, { 1022 atom_op_move, ATOM_ARG_REG}, { 1023 atom_op_move, ATOM_ARG_PS}, { 1024 atom_op_move, ATOM_ARG_WS}, { 1025 atom_op_move, ATOM_ARG_FB}, { 1026 atom_op_move, ATOM_ARG_PLL}, { 1027 atom_op_move, ATOM_ARG_MC}, { 1028 atom_op_and, ATOM_ARG_REG}, { 1029 atom_op_and, ATOM_ARG_PS}, { 1030 atom_op_and, ATOM_ARG_WS}, { 1031 atom_op_and, ATOM_ARG_FB}, { 1032 atom_op_and, ATOM_ARG_PLL}, { 1033 atom_op_and, ATOM_ARG_MC}, { 1034 atom_op_or, ATOM_ARG_REG}, { 1035 atom_op_or, ATOM_ARG_PS}, { 1036 atom_op_or, ATOM_ARG_WS}, { 1037 atom_op_or, ATOM_ARG_FB}, { 1038 atom_op_or, ATOM_ARG_PLL}, { 1039 atom_op_or, ATOM_ARG_MC}, { 1040 atom_op_shift_left, ATOM_ARG_REG}, { 1041 atom_op_shift_left, ATOM_ARG_PS}, { 1042 atom_op_shift_left, ATOM_ARG_WS}, { 1043 atom_op_shift_left, ATOM_ARG_FB}, { 1044 atom_op_shift_left, ATOM_ARG_PLL}, { 1045 atom_op_shift_left, ATOM_ARG_MC}, { 1046 atom_op_shift_right, ATOM_ARG_REG}, { 1047 atom_op_shift_right, ATOM_ARG_PS}, { 1048 atom_op_shift_right, ATOM_ARG_WS}, { 1049 atom_op_shift_right, ATOM_ARG_FB}, { 1050 atom_op_shift_right, ATOM_ARG_PLL}, { 1051 atom_op_shift_right, ATOM_ARG_MC}, { 1052 atom_op_mul, ATOM_ARG_REG}, { 1053 atom_op_mul, ATOM_ARG_PS}, { 1054 atom_op_mul, ATOM_ARG_WS}, { 1055 atom_op_mul, ATOM_ARG_FB}, { 1056 atom_op_mul, ATOM_ARG_PLL}, { 1057 atom_op_mul, ATOM_ARG_MC}, { 1058 atom_op_div, ATOM_ARG_REG}, { 1059 atom_op_div, ATOM_ARG_PS}, { 1060 atom_op_div, ATOM_ARG_WS}, { 1061 atom_op_div, ATOM_ARG_FB}, { 1062 atom_op_div, ATOM_ARG_PLL}, { 1063 atom_op_div, ATOM_ARG_MC}, { 1064 atom_op_add, ATOM_ARG_REG}, { 1065 atom_op_add, ATOM_ARG_PS}, { 1066 atom_op_add, ATOM_ARG_WS}, { 1067 atom_op_add, ATOM_ARG_FB}, { 1068 atom_op_add, ATOM_ARG_PLL}, { 1069 atom_op_add, ATOM_ARG_MC}, { 1070 atom_op_sub, ATOM_ARG_REG}, { 1071 atom_op_sub, ATOM_ARG_PS}, { 1072 atom_op_sub, ATOM_ARG_WS}, { 1073 atom_op_sub, ATOM_ARG_FB}, { 1074 atom_op_sub, ATOM_ARG_PLL}, { 1075 atom_op_sub, ATOM_ARG_MC}, { 1076 atom_op_setport, ATOM_PORT_ATI}, { 1077 atom_op_setport, ATOM_PORT_PCI}, { 1078 atom_op_setport, ATOM_PORT_SYSIO}, { 1079 atom_op_setregblock, 0}, { 1080 atom_op_setfbbase, 0}, { 1081 atom_op_compare, ATOM_ARG_REG}, { 1082 atom_op_compare, ATOM_ARG_PS}, { 1083 atom_op_compare, ATOM_ARG_WS}, { 1084 atom_op_compare, ATOM_ARG_FB}, { 1085 atom_op_compare, ATOM_ARG_PLL}, { 1086 atom_op_compare, ATOM_ARG_MC}, { 1087 atom_op_switch, 0}, { 1088 atom_op_jump, ATOM_COND_ALWAYS}, { 1089 atom_op_jump, ATOM_COND_EQUAL}, { 1090 atom_op_jump, ATOM_COND_BELOW}, { 1091 atom_op_jump, ATOM_COND_ABOVE}, { 1092 atom_op_jump, ATOM_COND_BELOWOREQUAL}, { 1093 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { 1094 atom_op_jump, ATOM_COND_NOTEQUAL}, { 1095 atom_op_test, ATOM_ARG_REG}, { 1096 atom_op_test, ATOM_ARG_PS}, { 1097 atom_op_test, ATOM_ARG_WS}, { 1098 atom_op_test, ATOM_ARG_FB}, { 1099 atom_op_test, ATOM_ARG_PLL}, { 1100 atom_op_test, ATOM_ARG_MC}, { 1101 atom_op_delay, ATOM_UNIT_MILLISEC}, { 1102 atom_op_delay, ATOM_UNIT_MICROSEC}, { 1103 atom_op_calltable, 0}, { 1104 atom_op_repeat, 0}, { 1105 atom_op_clear, ATOM_ARG_REG}, { 1106 atom_op_clear, ATOM_ARG_PS}, { 1107 atom_op_clear, ATOM_ARG_WS}, { 1108 atom_op_clear, ATOM_ARG_FB}, { 1109 atom_op_clear, ATOM_ARG_PLL}, { 1110 atom_op_clear, ATOM_ARG_MC}, { 1111 atom_op_nop, 0}, { 1112 atom_op_eot, 0}, { 1113 atom_op_mask, ATOM_ARG_REG}, { 1114 atom_op_mask, ATOM_ARG_PS}, { 1115 atom_op_mask, ATOM_ARG_WS}, { 1116 atom_op_mask, ATOM_ARG_FB}, { 1117 atom_op_mask, ATOM_ARG_PLL}, { 1118 atom_op_mask, ATOM_ARG_MC}, { 1119 atom_op_postcard, 0}, { 1120 atom_op_beep, 0}, { 1121 atom_op_savereg, 0}, { 1122 atom_op_restorereg, 0}, { 1123 atom_op_setdatablock, 0}, { 1124 atom_op_xor, ATOM_ARG_REG}, { 1125 atom_op_xor, ATOM_ARG_PS}, { 1126 atom_op_xor, ATOM_ARG_WS}, { 1127 atom_op_xor, ATOM_ARG_FB}, { 1128 atom_op_xor, ATOM_ARG_PLL}, { 1129 atom_op_xor, ATOM_ARG_MC}, { 1130 atom_op_shl, ATOM_ARG_REG}, { 1131 atom_op_shl, ATOM_ARG_PS}, { 1132 atom_op_shl, ATOM_ARG_WS}, { 1133 atom_op_shl, ATOM_ARG_FB}, { 1134 atom_op_shl, ATOM_ARG_PLL}, { 1135 atom_op_shl, ATOM_ARG_MC}, { 1136 atom_op_shr, ATOM_ARG_REG}, { 1137 atom_op_shr, ATOM_ARG_PS}, { 1138 atom_op_shr, ATOM_ARG_WS}, { 1139 atom_op_shr, ATOM_ARG_FB}, { 1140 atom_op_shr, ATOM_ARG_PLL}, { 1141 atom_op_shr, ATOM_ARG_MC}, { 1142atom_op_debug, 0},}; 1143 1144static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) 1145{ 1146 int base = CU16(ctx->cmd_table + 4 + 2 * index); 1147 int len, ws, ps, ptr; 1148 unsigned char op; 1149 atom_exec_context ectx; 1150 int ret = 0; 1151 1152 if (!base) 1153 return -EINVAL; 1154 1155 len = CU16(base + ATOM_CT_SIZE_PTR); 1156 ws = CU8(base + ATOM_CT_WS_PTR); 1157 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; 1158 ptr = base + ATOM_CT_CODE_PTR; 1159 1160 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); 1161 1162 ectx.ctx = ctx; 1163 ectx.ps_shift = ps / 4; 1164 ectx.start = base; 1165 ectx.ps = params; 1166 ectx.abort = false; 1167 ectx.last_jump = 0; 1168 if (ws) 1169 ectx.ws = kzalloc(4 * ws, GFP_KERNEL); 1170 else 1171 ectx.ws = NULL; 1172 1173 debug_depth++; 1174 while (1) { 1175 op = CU8(ptr++); 1176 if (op < ATOM_OP_NAMES_CNT) 1177 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); 1178 else 1179 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); 1180 if (ectx.abort) { 1181 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", 1182 base, len, ws, ps, ptr - 1); 1183 ret = -EINVAL; 1184 goto free; 1185 } 1186 1187 if (op < ATOM_OP_CNT && op > 0) 1188 opcode_table[op].func(&ectx, &ptr, 1189 opcode_table[op].arg); 1190 else 1191 break; 1192 1193 if (op == ATOM_OP_EOT) 1194 break; 1195 } 1196 debug_depth--; 1197 SDEBUG("<<\n"); 1198 1199free: 1200 if (ws) 1201 kfree(ectx.ws); 1202 return ret; 1203} 1204 1205int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) 1206{ 1207 int r; 1208 1209 mutex_lock(&ctx->mutex); 1210 /* reset reg block */ 1211 ctx->reg_block = 0; 1212 /* reset fb window */ 1213 ctx->fb_base = 0; 1214 /* reset io mode */ 1215 ctx->io_mode = ATOM_IO_MM; 1216 r = atom_execute_table_locked(ctx, index, params); 1217 mutex_unlock(&ctx->mutex); 1218 return r; 1219} 1220 1221static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; 1222 1223static void atom_index_iio(struct atom_context *ctx, int base) 1224{ 1225 ctx->iio = kzalloc(2 * 256, GFP_KERNEL); 1226 while (CU8(base) == ATOM_IIO_START) { 1227 ctx->iio[CU8(base + 1)] = base + 2; 1228 base += 2; 1229 while (CU8(base) != ATOM_IIO_END) 1230 base += atom_iio_len[CU8(base)]; 1231 base += 3; 1232 } 1233} 1234 1235struct atom_context *atom_parse(struct card_info *card, void *bios) 1236{ 1237 int base; 1238 struct atom_context *ctx = 1239 kzalloc(sizeof(struct atom_context), GFP_KERNEL); 1240 char *str; 1241 char name[512]; 1242 int i; 1243 1244 ctx->card = card; 1245 ctx->bios = bios; 1246 1247 if (CU16(0) != ATOM_BIOS_MAGIC) { 1248 printk(KERN_INFO "Invalid BIOS magic.\n"); 1249 kfree(ctx); 1250 return NULL; 1251 } 1252 if (strncmp 1253 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, 1254 strlen(ATOM_ATI_MAGIC))) { 1255 printk(KERN_INFO "Invalid ATI magic.\n"); 1256 kfree(ctx); 1257 return NULL; 1258 } 1259 1260 base = CU16(ATOM_ROM_TABLE_PTR); 1261 if (strncmp 1262 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, 1263 strlen(ATOM_ROM_MAGIC))) { 1264 printk(KERN_INFO "Invalid ATOM magic.\n"); 1265 kfree(ctx); 1266 return NULL; 1267 } 1268 1269 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); 1270 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); 1271 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); 1272 1273 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); 1274 while (*str && ((*str == '\n') || (*str == '\r'))) 1275 str++; 1276 /* name string isn't always 0 terminated */ 1277 for (i = 0; i < 511; i++) { 1278 name[i] = str[i]; 1279 if (name[i] < '.' || name[i] > 'z') { 1280 name[i] = 0; 1281 break; 1282 } 1283 } 1284 printk(KERN_INFO "ATOM BIOS: %s\n", name); 1285 1286 return ctx; 1287} 1288 1289int atom_asic_init(struct atom_context *ctx) 1290{ 1291 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); 1292 uint32_t ps[16]; 1293 memset(ps, 0, 64); 1294 1295 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); 1296 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); 1297 if (!ps[0] || !ps[1]) 1298 return 1; 1299 1300 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) 1301 return 1; 1302 return atom_execute_table(ctx, ATOM_CMD_INIT, ps); 1303} 1304 1305void atom_destroy(struct atom_context *ctx) 1306{ 1307 if (ctx->iio) 1308 kfree(ctx->iio); 1309 kfree(ctx); 1310} 1311 1312bool atom_parse_data_header(struct atom_context *ctx, int index, 1313 uint16_t * size, uint8_t * frev, uint8_t * crev, 1314 uint16_t * data_start) 1315{ 1316 int offset = index * 2 + 4; 1317 int idx = CU16(ctx->data_table + offset); 1318 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); 1319 1320 if (!mdt[index]) 1321 return false; 1322 1323 if (size) 1324 *size = CU16(idx); 1325 if (frev) 1326 *frev = CU8(idx + 2); 1327 if (crev) 1328 *crev = CU8(idx + 3); 1329 *data_start = idx; 1330 return true; 1331} 1332 1333bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, 1334 uint8_t * crev) 1335{ 1336 int offset = index * 2 + 4; 1337 int idx = CU16(ctx->cmd_table + offset); 1338 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); 1339 1340 if (!mct[index]) 1341 return false; 1342 1343 if (frev) 1344 *frev = CU8(idx + 2); 1345 if (crev) 1346 *crev = CU8(idx + 3); 1347 return true; 1348} 1349 1350int atom_allocate_fb_scratch(struct atom_context *ctx) 1351{ 1352 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); 1353 uint16_t data_offset; 1354 int usage_bytes = 0; 1355 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; 1356 1357 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { 1358 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); 1359 1360 DRM_DEBUG("atom firmware requested %08x %dkb\n", 1361 firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware, 1362 firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb); 1363 1364 usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024; 1365 } 1366 if (usage_bytes == 0) 1367 usage_bytes = 20 * 1024; 1368 /* allocate some scratch memory */ 1369 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); 1370 if (!ctx->scratch) 1371 return -ENOMEM; 1372 return 0; 1373} 1374