atom.c revision 8e461123f28e6b17456225e70eb834b3b30d28bb
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#include "radeon.h" 36 37#define ATOM_COND_ABOVE 0 38#define ATOM_COND_ABOVEOREQUAL 1 39#define ATOM_COND_ALWAYS 2 40#define ATOM_COND_BELOW 3 41#define ATOM_COND_BELOWOREQUAL 4 42#define ATOM_COND_EQUAL 5 43#define ATOM_COND_NOTEQUAL 6 44 45#define ATOM_PORT_ATI 0 46#define ATOM_PORT_PCI 1 47#define ATOM_PORT_SYSIO 2 48 49#define ATOM_UNIT_MICROSEC 0 50#define ATOM_UNIT_MILLISEC 1 51 52#define PLL_INDEX 2 53#define PLL_DATA 3 54 55typedef struct { 56 struct atom_context *ctx; 57 uint32_t *ps, *ws; 58 int ps_shift; 59 uint16_t start; 60 unsigned last_jump; 61 unsigned long last_jump_jiffies; 62 bool abort; 63} atom_exec_context; 64 65int atom_debug = 0; 66static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); 67int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); 68 69static uint32_t atom_arg_mask[8] = 70 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000, 710xFF000000 }; 72static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 }; 73 74static int atom_dst_to_src[8][4] = { 75 /* translate destination alignment field to the source alignment encoding */ 76 {0, 0, 0, 0}, 77 {1, 2, 3, 0}, 78 {1, 2, 3, 0}, 79 {1, 2, 3, 0}, 80 {4, 5, 6, 7}, 81 {4, 5, 6, 7}, 82 {4, 5, 6, 7}, 83 {4, 5, 6, 7}, 84}; 85static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 }; 86 87static int debug_depth = 0; 88#ifdef ATOM_DEBUG 89static void debug_print_spaces(int n) 90{ 91 while (n--) 92 printk(" "); 93} 94 95#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) 96#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) 97#else 98#define DEBUG(...) do { } while (0) 99#define SDEBUG(...) do { } while (0) 100#endif 101 102static uint32_t atom_iio_execute(struct atom_context *ctx, int base, 103 uint32_t index, uint32_t data) 104{ 105 struct radeon_device *rdev = ctx->card->dev->dev_private; 106 uint32_t temp = 0xCDCDCDCD; 107 108 while (1) 109 switch (CU8(base)) { 110 case ATOM_IIO_NOP: 111 base++; 112 break; 113 case ATOM_IIO_READ: 114 temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 115 base += 3; 116 break; 117 case ATOM_IIO_WRITE: 118 if (rdev->family == CHIP_RV515) 119 (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 120 ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp); 121 base += 3; 122 break; 123 case ATOM_IIO_CLEAR: 124 temp &= 125 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 126 CU8(base + 2)); 127 base += 3; 128 break; 129 case ATOM_IIO_SET: 130 temp |= 131 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + 132 2); 133 base += 3; 134 break; 135 case ATOM_IIO_MOVE_INDEX: 136 temp &= 137 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 138 CU8(base + 3)); 139 temp |= 140 ((index >> CU8(base + 2)) & 141 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 142 3); 143 base += 4; 144 break; 145 case ATOM_IIO_MOVE_DATA: 146 temp &= 147 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 148 CU8(base + 3)); 149 temp |= 150 ((data >> CU8(base + 2)) & 151 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 152 3); 153 base += 4; 154 break; 155 case ATOM_IIO_MOVE_ATTR: 156 temp &= 157 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 158 CU8(base + 3)); 159 temp |= 160 ((ctx-> 161 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - 162 CU8 163 (base 164 + 165 1)))) 166 << CU8(base + 3); 167 base += 4; 168 break; 169 case ATOM_IIO_END: 170 return temp; 171 default: 172 printk(KERN_INFO "Unknown IIO opcode.\n"); 173 return 0; 174 } 175} 176 177static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, 178 int *ptr, uint32_t *saved, int print) 179{ 180 uint32_t idx, val = 0xCDCDCDCD, align, arg; 181 struct atom_context *gctx = ctx->ctx; 182 arg = attr & 7; 183 align = (attr >> 3) & 7; 184 switch (arg) { 185 case ATOM_ARG_REG: 186 idx = U16(*ptr); 187 (*ptr) += 2; 188 if (print) 189 DEBUG("REG[0x%04X]", idx); 190 idx += gctx->reg_block; 191 switch (gctx->io_mode) { 192 case ATOM_IO_MM: 193 val = gctx->card->reg_read(gctx->card, idx); 194 break; 195 case ATOM_IO_PCI: 196 printk(KERN_INFO 197 "PCI registers are not implemented.\n"); 198 return 0; 199 case ATOM_IO_SYSIO: 200 printk(KERN_INFO 201 "SYSIO registers are not implemented.\n"); 202 return 0; 203 default: 204 if (!(gctx->io_mode & 0x80)) { 205 printk(KERN_INFO "Bad IO mode.\n"); 206 return 0; 207 } 208 if (!gctx->iio[gctx->io_mode & 0x7F]) { 209 printk(KERN_INFO 210 "Undefined indirect IO read method %d.\n", 211 gctx->io_mode & 0x7F); 212 return 0; 213 } 214 val = 215 atom_iio_execute(gctx, 216 gctx->iio[gctx->io_mode & 0x7F], 217 idx, 0); 218 } 219 break; 220 case ATOM_ARG_PS: 221 idx = U8(*ptr); 222 (*ptr)++; 223 /* get_unaligned_le32 avoids unaligned accesses from atombios 224 * tables, noticed on a DEC Alpha. */ 225 val = get_unaligned_le32((u32 *)&ctx->ps[idx]); 226 if (print) 227 DEBUG("PS[0x%02X,0x%04X]", idx, val); 228 break; 229 case ATOM_ARG_WS: 230 idx = U8(*ptr); 231 (*ptr)++; 232 if (print) 233 DEBUG("WS[0x%02X]", idx); 234 switch (idx) { 235 case ATOM_WS_QUOTIENT: 236 val = gctx->divmul[0]; 237 break; 238 case ATOM_WS_REMAINDER: 239 val = gctx->divmul[1]; 240 break; 241 case ATOM_WS_DATAPTR: 242 val = gctx->data_block; 243 break; 244 case ATOM_WS_SHIFT: 245 val = gctx->shift; 246 break; 247 case ATOM_WS_OR_MASK: 248 val = 1 << gctx->shift; 249 break; 250 case ATOM_WS_AND_MASK: 251 val = ~(1 << gctx->shift); 252 break; 253 case ATOM_WS_FB_WINDOW: 254 val = gctx->fb_base; 255 break; 256 case ATOM_WS_ATTRIBUTES: 257 val = gctx->io_attr; 258 break; 259 case ATOM_WS_REGPTR: 260 val = gctx->reg_block; 261 break; 262 default: 263 val = ctx->ws[idx]; 264 } 265 break; 266 case ATOM_ARG_ID: 267 idx = U16(*ptr); 268 (*ptr) += 2; 269 if (print) { 270 if (gctx->data_block) 271 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); 272 else 273 DEBUG("ID[0x%04X]", idx); 274 } 275 val = U32(idx + gctx->data_block); 276 break; 277 case ATOM_ARG_FB: 278 idx = U8(*ptr); 279 (*ptr)++; 280 val = gctx->scratch[((gctx->fb_base + idx) / 4)]; 281 if (print) 282 DEBUG("FB[0x%02X]", idx); 283 break; 284 case ATOM_ARG_IMM: 285 switch (align) { 286 case ATOM_SRC_DWORD: 287 val = U32(*ptr); 288 (*ptr) += 4; 289 if (print) 290 DEBUG("IMM 0x%08X\n", val); 291 return val; 292 case ATOM_SRC_WORD0: 293 case ATOM_SRC_WORD8: 294 case ATOM_SRC_WORD16: 295 val = U16(*ptr); 296 (*ptr) += 2; 297 if (print) 298 DEBUG("IMM 0x%04X\n", val); 299 return val; 300 case ATOM_SRC_BYTE0: 301 case ATOM_SRC_BYTE8: 302 case ATOM_SRC_BYTE16: 303 case ATOM_SRC_BYTE24: 304 val = U8(*ptr); 305 (*ptr)++; 306 if (print) 307 DEBUG("IMM 0x%02X\n", val); 308 return val; 309 } 310 return 0; 311 case ATOM_ARG_PLL: 312 idx = U8(*ptr); 313 (*ptr)++; 314 if (print) 315 DEBUG("PLL[0x%02X]", idx); 316 val = gctx->card->pll_read(gctx->card, idx); 317 break; 318 case ATOM_ARG_MC: 319 idx = U8(*ptr); 320 (*ptr)++; 321 if (print) 322 DEBUG("MC[0x%02X]", idx); 323 val = gctx->card->mc_read(gctx->card, idx); 324 break; 325 } 326 if (saved) 327 *saved = val; 328 val &= atom_arg_mask[align]; 329 val >>= atom_arg_shift[align]; 330 if (print) 331 switch (align) { 332 case ATOM_SRC_DWORD: 333 DEBUG(".[31:0] -> 0x%08X\n", val); 334 break; 335 case ATOM_SRC_WORD0: 336 DEBUG(".[15:0] -> 0x%04X\n", val); 337 break; 338 case ATOM_SRC_WORD8: 339 DEBUG(".[23:8] -> 0x%04X\n", val); 340 break; 341 case ATOM_SRC_WORD16: 342 DEBUG(".[31:16] -> 0x%04X\n", val); 343 break; 344 case ATOM_SRC_BYTE0: 345 DEBUG(".[7:0] -> 0x%02X\n", val); 346 break; 347 case ATOM_SRC_BYTE8: 348 DEBUG(".[15:8] -> 0x%02X\n", val); 349 break; 350 case ATOM_SRC_BYTE16: 351 DEBUG(".[23:16] -> 0x%02X\n", val); 352 break; 353 case ATOM_SRC_BYTE24: 354 DEBUG(".[31:24] -> 0x%02X\n", val); 355 break; 356 } 357 return val; 358} 359 360static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) 361{ 362 uint32_t align = (attr >> 3) & 7, arg = attr & 7; 363 switch (arg) { 364 case ATOM_ARG_REG: 365 case ATOM_ARG_ID: 366 (*ptr) += 2; 367 break; 368 case ATOM_ARG_PLL: 369 case ATOM_ARG_MC: 370 case ATOM_ARG_PS: 371 case ATOM_ARG_WS: 372 case ATOM_ARG_FB: 373 (*ptr)++; 374 break; 375 case ATOM_ARG_IMM: 376 switch (align) { 377 case ATOM_SRC_DWORD: 378 (*ptr) += 4; 379 return; 380 case ATOM_SRC_WORD0: 381 case ATOM_SRC_WORD8: 382 case ATOM_SRC_WORD16: 383 (*ptr) += 2; 384 return; 385 case ATOM_SRC_BYTE0: 386 case ATOM_SRC_BYTE8: 387 case ATOM_SRC_BYTE16: 388 case ATOM_SRC_BYTE24: 389 (*ptr)++; 390 return; 391 } 392 return; 393 } 394} 395 396static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) 397{ 398 return atom_get_src_int(ctx, attr, ptr, NULL, 1); 399} 400 401static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) 402{ 403 uint32_t val = 0xCDCDCDCD; 404 405 switch (align) { 406 case ATOM_SRC_DWORD: 407 val = U32(*ptr); 408 (*ptr) += 4; 409 break; 410 case ATOM_SRC_WORD0: 411 case ATOM_SRC_WORD8: 412 case ATOM_SRC_WORD16: 413 val = U16(*ptr); 414 (*ptr) += 2; 415 break; 416 case ATOM_SRC_BYTE0: 417 case ATOM_SRC_BYTE8: 418 case ATOM_SRC_BYTE16: 419 case ATOM_SRC_BYTE24: 420 val = U8(*ptr); 421 (*ptr)++; 422 break; 423 } 424 return val; 425} 426 427static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, 428 int *ptr, uint32_t *saved, int print) 429{ 430 return atom_get_src_int(ctx, 431 arg | atom_dst_to_src[(attr >> 3) & 432 7][(attr >> 6) & 3] << 3, 433 ptr, saved, print); 434} 435 436static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) 437{ 438 atom_skip_src_int(ctx, 439 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 440 3] << 3, ptr); 441} 442 443static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, 444 int *ptr, uint32_t val, uint32_t saved) 445{ 446 uint32_t align = 447 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = 448 val, idx; 449 struct atom_context *gctx = ctx->ctx; 450 old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; 451 val <<= atom_arg_shift[align]; 452 val &= atom_arg_mask[align]; 453 saved &= ~atom_arg_mask[align]; 454 val |= saved; 455 switch (arg) { 456 case ATOM_ARG_REG: 457 idx = U16(*ptr); 458 (*ptr) += 2; 459 DEBUG("REG[0x%04X]", idx); 460 idx += gctx->reg_block; 461 switch (gctx->io_mode) { 462 case ATOM_IO_MM: 463 if (idx == 0) 464 gctx->card->reg_write(gctx->card, idx, 465 val << 2); 466 else 467 gctx->card->reg_write(gctx->card, idx, val); 468 break; 469 case ATOM_IO_PCI: 470 printk(KERN_INFO 471 "PCI registers are not implemented.\n"); 472 return; 473 case ATOM_IO_SYSIO: 474 printk(KERN_INFO 475 "SYSIO registers are not implemented.\n"); 476 return; 477 default: 478 if (!(gctx->io_mode & 0x80)) { 479 printk(KERN_INFO "Bad IO mode.\n"); 480 return; 481 } 482 if (!gctx->iio[gctx->io_mode & 0xFF]) { 483 printk(KERN_INFO 484 "Undefined indirect IO write method %d.\n", 485 gctx->io_mode & 0x7F); 486 return; 487 } 488 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], 489 idx, val); 490 } 491 break; 492 case ATOM_ARG_PS: 493 idx = U8(*ptr); 494 (*ptr)++; 495 DEBUG("PS[0x%02X]", idx); 496 ctx->ps[idx] = cpu_to_le32(val); 497 break; 498 case ATOM_ARG_WS: 499 idx = U8(*ptr); 500 (*ptr)++; 501 DEBUG("WS[0x%02X]", idx); 502 switch (idx) { 503 case ATOM_WS_QUOTIENT: 504 gctx->divmul[0] = val; 505 break; 506 case ATOM_WS_REMAINDER: 507 gctx->divmul[1] = val; 508 break; 509 case ATOM_WS_DATAPTR: 510 gctx->data_block = val; 511 break; 512 case ATOM_WS_SHIFT: 513 gctx->shift = val; 514 break; 515 case ATOM_WS_OR_MASK: 516 case ATOM_WS_AND_MASK: 517 break; 518 case ATOM_WS_FB_WINDOW: 519 gctx->fb_base = val; 520 break; 521 case ATOM_WS_ATTRIBUTES: 522 gctx->io_attr = val; 523 break; 524 case ATOM_WS_REGPTR: 525 gctx->reg_block = val; 526 break; 527 default: 528 ctx->ws[idx] = val; 529 } 530 break; 531 case ATOM_ARG_FB: 532 idx = U8(*ptr); 533 (*ptr)++; 534 gctx->scratch[((gctx->fb_base + idx) / 4)] = val; 535 DEBUG("FB[0x%02X]", idx); 536 break; 537 case ATOM_ARG_PLL: 538 idx = U8(*ptr); 539 (*ptr)++; 540 DEBUG("PLL[0x%02X]", idx); 541 gctx->card->pll_write(gctx->card, idx, val); 542 break; 543 case ATOM_ARG_MC: 544 idx = U8(*ptr); 545 (*ptr)++; 546 DEBUG("MC[0x%02X]", idx); 547 gctx->card->mc_write(gctx->card, idx, val); 548 return; 549 } 550 switch (align) { 551 case ATOM_SRC_DWORD: 552 DEBUG(".[31:0] <- 0x%08X\n", old_val); 553 break; 554 case ATOM_SRC_WORD0: 555 DEBUG(".[15:0] <- 0x%04X\n", old_val); 556 break; 557 case ATOM_SRC_WORD8: 558 DEBUG(".[23:8] <- 0x%04X\n", old_val); 559 break; 560 case ATOM_SRC_WORD16: 561 DEBUG(".[31:16] <- 0x%04X\n", old_val); 562 break; 563 case ATOM_SRC_BYTE0: 564 DEBUG(".[7:0] <- 0x%02X\n", old_val); 565 break; 566 case ATOM_SRC_BYTE8: 567 DEBUG(".[15:8] <- 0x%02X\n", old_val); 568 break; 569 case ATOM_SRC_BYTE16: 570 DEBUG(".[23:16] <- 0x%02X\n", old_val); 571 break; 572 case ATOM_SRC_BYTE24: 573 DEBUG(".[31:24] <- 0x%02X\n", old_val); 574 break; 575 } 576} 577 578static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg) 579{ 580 uint8_t attr = U8((*ptr)++); 581 uint32_t dst, src, saved; 582 int dptr = *ptr; 583 SDEBUG(" dst: "); 584 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 585 SDEBUG(" src: "); 586 src = atom_get_src(ctx, attr, ptr); 587 dst += src; 588 SDEBUG(" dst: "); 589 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 590} 591 592static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg) 593{ 594 uint8_t attr = U8((*ptr)++); 595 uint32_t dst, src, saved; 596 int dptr = *ptr; 597 SDEBUG(" dst: "); 598 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 599 SDEBUG(" src: "); 600 src = atom_get_src(ctx, attr, ptr); 601 dst &= src; 602 SDEBUG(" dst: "); 603 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 604} 605 606static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) 607{ 608 printk("ATOM BIOS beeped!\n"); 609} 610 611static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) 612{ 613 int idx = U8((*ptr)++); 614 int r = 0; 615 616 if (idx < ATOM_TABLE_NAMES_CNT) 617 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); 618 else 619 SDEBUG(" table: %d\n", idx); 620 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) 621 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); 622 if (r) { 623 ctx->abort = true; 624 } 625} 626 627static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) 628{ 629 uint8_t attr = U8((*ptr)++); 630 uint32_t saved; 631 int dptr = *ptr; 632 attr &= 0x38; 633 attr |= atom_def_dst[attr >> 3] << 6; 634 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 635 SDEBUG(" dst: "); 636 atom_put_dst(ctx, arg, attr, &dptr, 0, saved); 637} 638 639static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) 640{ 641 uint8_t attr = U8((*ptr)++); 642 uint32_t dst, src; 643 SDEBUG(" src1: "); 644 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 645 SDEBUG(" src2: "); 646 src = atom_get_src(ctx, attr, ptr); 647 ctx->ctx->cs_equal = (dst == src); 648 ctx->ctx->cs_above = (dst > src); 649 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", 650 ctx->ctx->cs_above ? "GT" : "LE"); 651} 652 653static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) 654{ 655 uint8_t count = U8((*ptr)++); 656 SDEBUG(" count: %d\n", count); 657 if (arg == ATOM_UNIT_MICROSEC) 658 udelay(count); 659 else 660 schedule_timeout_uninterruptible(msecs_to_jiffies(count)); 661} 662 663static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) 664{ 665 uint8_t attr = U8((*ptr)++); 666 uint32_t dst, src; 667 SDEBUG(" src1: "); 668 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 669 SDEBUG(" src2: "); 670 src = atom_get_src(ctx, attr, ptr); 671 if (src != 0) { 672 ctx->ctx->divmul[0] = dst / src; 673 ctx->ctx->divmul[1] = dst % src; 674 } else { 675 ctx->ctx->divmul[0] = 0; 676 ctx->ctx->divmul[1] = 0; 677 } 678} 679 680static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) 681{ 682 /* functionally, a nop */ 683} 684 685static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) 686{ 687 int execute = 0, target = U16(*ptr); 688 unsigned long cjiffies; 689 690 (*ptr) += 2; 691 switch (arg) { 692 case ATOM_COND_ABOVE: 693 execute = ctx->ctx->cs_above; 694 break; 695 case ATOM_COND_ABOVEOREQUAL: 696 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; 697 break; 698 case ATOM_COND_ALWAYS: 699 execute = 1; 700 break; 701 case ATOM_COND_BELOW: 702 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); 703 break; 704 case ATOM_COND_BELOWOREQUAL: 705 execute = !ctx->ctx->cs_above; 706 break; 707 case ATOM_COND_EQUAL: 708 execute = ctx->ctx->cs_equal; 709 break; 710 case ATOM_COND_NOTEQUAL: 711 execute = !ctx->ctx->cs_equal; 712 break; 713 } 714 if (arg != ATOM_COND_ALWAYS) 715 SDEBUG(" taken: %s\n", execute ? "yes" : "no"); 716 SDEBUG(" target: 0x%04X\n", target); 717 if (execute) { 718 if (ctx->last_jump == (ctx->start + target)) { 719 cjiffies = jiffies; 720 if (time_after(cjiffies, ctx->last_jump_jiffies)) { 721 cjiffies -= ctx->last_jump_jiffies; 722 if ((jiffies_to_msecs(cjiffies) > 5000)) { 723 DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n"); 724 ctx->abort = true; 725 } 726 } else { 727 /* jiffies wrap around we will just wait a little longer */ 728 ctx->last_jump_jiffies = jiffies; 729 } 730 } else { 731 ctx->last_jump = ctx->start + target; 732 ctx->last_jump_jiffies = jiffies; 733 } 734 *ptr = ctx->start + target; 735 } 736} 737 738static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) 739{ 740 uint8_t attr = U8((*ptr)++); 741 uint32_t dst, mask, src, saved; 742 int dptr = *ptr; 743 SDEBUG(" dst: "); 744 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 745 mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); 746 SDEBUG(" mask: 0x%08x", mask); 747 SDEBUG(" src: "); 748 src = atom_get_src(ctx, attr, ptr); 749 dst &= mask; 750 dst |= src; 751 SDEBUG(" dst: "); 752 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 753} 754 755static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) 756{ 757 uint8_t attr = U8((*ptr)++); 758 uint32_t src, saved; 759 int dptr = *ptr; 760 if (((attr >> 3) & 7) != ATOM_SRC_DWORD) 761 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 762 else { 763 atom_skip_dst(ctx, arg, attr, ptr); 764 saved = 0xCDCDCDCD; 765 } 766 SDEBUG(" src: "); 767 src = atom_get_src(ctx, attr, ptr); 768 SDEBUG(" dst: "); 769 atom_put_dst(ctx, arg, attr, &dptr, src, saved); 770} 771 772static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) 773{ 774 uint8_t attr = U8((*ptr)++); 775 uint32_t dst, src; 776 SDEBUG(" src1: "); 777 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 778 SDEBUG(" src2: "); 779 src = atom_get_src(ctx, attr, ptr); 780 ctx->ctx->divmul[0] = dst * src; 781} 782 783static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) 784{ 785 /* nothing */ 786} 787 788static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) 789{ 790 uint8_t attr = U8((*ptr)++); 791 uint32_t dst, src, saved; 792 int dptr = *ptr; 793 SDEBUG(" dst: "); 794 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 795 SDEBUG(" src: "); 796 src = atom_get_src(ctx, attr, ptr); 797 dst |= src; 798 SDEBUG(" dst: "); 799 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 800} 801 802static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) 803{ 804 uint8_t val = U8((*ptr)++); 805 SDEBUG("POST card output: 0x%02X\n", val); 806} 807 808static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) 809{ 810 printk(KERN_INFO "unimplemented!\n"); 811} 812 813static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) 814{ 815 printk(KERN_INFO "unimplemented!\n"); 816} 817 818static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) 819{ 820 printk(KERN_INFO "unimplemented!\n"); 821} 822 823static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) 824{ 825 int idx = U8(*ptr); 826 (*ptr)++; 827 SDEBUG(" block: %d\n", idx); 828 if (!idx) 829 ctx->ctx->data_block = 0; 830 else if (idx == 255) 831 ctx->ctx->data_block = ctx->start; 832 else 833 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); 834 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); 835} 836 837static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) 838{ 839 uint8_t attr = U8((*ptr)++); 840 SDEBUG(" fb_base: "); 841 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); 842} 843 844static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) 845{ 846 int port; 847 switch (arg) { 848 case ATOM_PORT_ATI: 849 port = U16(*ptr); 850 if (port < ATOM_IO_NAMES_CNT) 851 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); 852 else 853 SDEBUG(" port: %d\n", port); 854 if (!port) 855 ctx->ctx->io_mode = ATOM_IO_MM; 856 else 857 ctx->ctx->io_mode = ATOM_IO_IIO | port; 858 (*ptr) += 2; 859 break; 860 case ATOM_PORT_PCI: 861 ctx->ctx->io_mode = ATOM_IO_PCI; 862 (*ptr)++; 863 break; 864 case ATOM_PORT_SYSIO: 865 ctx->ctx->io_mode = ATOM_IO_SYSIO; 866 (*ptr)++; 867 break; 868 } 869} 870 871static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) 872{ 873 ctx->ctx->reg_block = U16(*ptr); 874 (*ptr) += 2; 875 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); 876} 877 878static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) 879{ 880 uint8_t attr = U8((*ptr)++), shift; 881 uint32_t saved, dst; 882 int dptr = *ptr; 883 attr &= 0x38; 884 attr |= atom_def_dst[attr >> 3] << 6; 885 SDEBUG(" dst: "); 886 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 887 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 888 SDEBUG(" shift: %d\n", shift); 889 dst <<= shift; 890 SDEBUG(" dst: "); 891 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 892} 893 894static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) 895{ 896 uint8_t attr = U8((*ptr)++), shift; 897 uint32_t saved, dst; 898 int dptr = *ptr; 899 attr &= 0x38; 900 attr |= atom_def_dst[attr >> 3] << 6; 901 SDEBUG(" dst: "); 902 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 903 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 904 SDEBUG(" shift: %d\n", shift); 905 dst >>= shift; 906 SDEBUG(" dst: "); 907 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 908} 909 910static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg) 911{ 912 uint8_t attr = U8((*ptr)++), shift; 913 uint32_t saved, dst; 914 int dptr = *ptr; 915 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 916 SDEBUG(" dst: "); 917 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 918 /* op needs to full dst value */ 919 dst = saved; 920 shift = atom_get_src(ctx, attr, ptr); 921 SDEBUG(" shift: %d\n", shift); 922 dst <<= shift; 923 dst &= atom_arg_mask[dst_align]; 924 dst >>= atom_arg_shift[dst_align]; 925 SDEBUG(" dst: "); 926 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 927} 928 929static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) 930{ 931 uint8_t attr = U8((*ptr)++), shift; 932 uint32_t saved, dst; 933 int dptr = *ptr; 934 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 935 SDEBUG(" dst: "); 936 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 937 /* op needs to full dst value */ 938 dst = saved; 939 shift = atom_get_src(ctx, attr, ptr); 940 SDEBUG(" shift: %d\n", shift); 941 dst >>= shift; 942 dst &= atom_arg_mask[dst_align]; 943 dst >>= atom_arg_shift[dst_align]; 944 SDEBUG(" dst: "); 945 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 946} 947 948static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) 949{ 950 uint8_t attr = U8((*ptr)++); 951 uint32_t dst, src, saved; 952 int dptr = *ptr; 953 SDEBUG(" dst: "); 954 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 955 SDEBUG(" src: "); 956 src = atom_get_src(ctx, attr, ptr); 957 dst -= src; 958 SDEBUG(" dst: "); 959 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 960} 961 962static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) 963{ 964 uint8_t attr = U8((*ptr)++); 965 uint32_t src, val, target; 966 SDEBUG(" switch: "); 967 src = atom_get_src(ctx, attr, ptr); 968 while (U16(*ptr) != ATOM_CASE_END) 969 if (U8(*ptr) == ATOM_CASE_MAGIC) { 970 (*ptr)++; 971 SDEBUG(" case: "); 972 val = 973 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, 974 ptr); 975 target = U16(*ptr); 976 if (val == src) { 977 SDEBUG(" target: %04X\n", target); 978 *ptr = ctx->start + target; 979 return; 980 } 981 (*ptr) += 2; 982 } else { 983 printk(KERN_INFO "Bad case.\n"); 984 return; 985 } 986 (*ptr) += 2; 987} 988 989static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) 990{ 991 uint8_t attr = U8((*ptr)++); 992 uint32_t dst, src; 993 SDEBUG(" src1: "); 994 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 995 SDEBUG(" src2: "); 996 src = atom_get_src(ctx, attr, ptr); 997 ctx->ctx->cs_equal = ((dst & src) == 0); 998 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); 999} 1000 1001static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) 1002{ 1003 uint8_t attr = U8((*ptr)++); 1004 uint32_t dst, src, saved; 1005 int dptr = *ptr; 1006 SDEBUG(" dst: "); 1007 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 1008 SDEBUG(" src: "); 1009 src = atom_get_src(ctx, attr, ptr); 1010 dst ^= src; 1011 SDEBUG(" dst: "); 1012 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 1013} 1014 1015static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) 1016{ 1017 printk(KERN_INFO "unimplemented!\n"); 1018} 1019 1020static struct { 1021 void (*func) (atom_exec_context *, int *, int); 1022 int arg; 1023} opcode_table[ATOM_OP_CNT] = { 1024 { 1025 NULL, 0}, { 1026 atom_op_move, ATOM_ARG_REG}, { 1027 atom_op_move, ATOM_ARG_PS}, { 1028 atom_op_move, ATOM_ARG_WS}, { 1029 atom_op_move, ATOM_ARG_FB}, { 1030 atom_op_move, ATOM_ARG_PLL}, { 1031 atom_op_move, ATOM_ARG_MC}, { 1032 atom_op_and, ATOM_ARG_REG}, { 1033 atom_op_and, ATOM_ARG_PS}, { 1034 atom_op_and, ATOM_ARG_WS}, { 1035 atom_op_and, ATOM_ARG_FB}, { 1036 atom_op_and, ATOM_ARG_PLL}, { 1037 atom_op_and, ATOM_ARG_MC}, { 1038 atom_op_or, ATOM_ARG_REG}, { 1039 atom_op_or, ATOM_ARG_PS}, { 1040 atom_op_or, ATOM_ARG_WS}, { 1041 atom_op_or, ATOM_ARG_FB}, { 1042 atom_op_or, ATOM_ARG_PLL}, { 1043 atom_op_or, ATOM_ARG_MC}, { 1044 atom_op_shift_left, ATOM_ARG_REG}, { 1045 atom_op_shift_left, ATOM_ARG_PS}, { 1046 atom_op_shift_left, ATOM_ARG_WS}, { 1047 atom_op_shift_left, ATOM_ARG_FB}, { 1048 atom_op_shift_left, ATOM_ARG_PLL}, { 1049 atom_op_shift_left, ATOM_ARG_MC}, { 1050 atom_op_shift_right, ATOM_ARG_REG}, { 1051 atom_op_shift_right, ATOM_ARG_PS}, { 1052 atom_op_shift_right, ATOM_ARG_WS}, { 1053 atom_op_shift_right, ATOM_ARG_FB}, { 1054 atom_op_shift_right, ATOM_ARG_PLL}, { 1055 atom_op_shift_right, ATOM_ARG_MC}, { 1056 atom_op_mul, ATOM_ARG_REG}, { 1057 atom_op_mul, ATOM_ARG_PS}, { 1058 atom_op_mul, ATOM_ARG_WS}, { 1059 atom_op_mul, ATOM_ARG_FB}, { 1060 atom_op_mul, ATOM_ARG_PLL}, { 1061 atom_op_mul, ATOM_ARG_MC}, { 1062 atom_op_div, ATOM_ARG_REG}, { 1063 atom_op_div, ATOM_ARG_PS}, { 1064 atom_op_div, ATOM_ARG_WS}, { 1065 atom_op_div, ATOM_ARG_FB}, { 1066 atom_op_div, ATOM_ARG_PLL}, { 1067 atom_op_div, ATOM_ARG_MC}, { 1068 atom_op_add, ATOM_ARG_REG}, { 1069 atom_op_add, ATOM_ARG_PS}, { 1070 atom_op_add, ATOM_ARG_WS}, { 1071 atom_op_add, ATOM_ARG_FB}, { 1072 atom_op_add, ATOM_ARG_PLL}, { 1073 atom_op_add, ATOM_ARG_MC}, { 1074 atom_op_sub, ATOM_ARG_REG}, { 1075 atom_op_sub, ATOM_ARG_PS}, { 1076 atom_op_sub, ATOM_ARG_WS}, { 1077 atom_op_sub, ATOM_ARG_FB}, { 1078 atom_op_sub, ATOM_ARG_PLL}, { 1079 atom_op_sub, ATOM_ARG_MC}, { 1080 atom_op_setport, ATOM_PORT_ATI}, { 1081 atom_op_setport, ATOM_PORT_PCI}, { 1082 atom_op_setport, ATOM_PORT_SYSIO}, { 1083 atom_op_setregblock, 0}, { 1084 atom_op_setfbbase, 0}, { 1085 atom_op_compare, ATOM_ARG_REG}, { 1086 atom_op_compare, ATOM_ARG_PS}, { 1087 atom_op_compare, ATOM_ARG_WS}, { 1088 atom_op_compare, ATOM_ARG_FB}, { 1089 atom_op_compare, ATOM_ARG_PLL}, { 1090 atom_op_compare, ATOM_ARG_MC}, { 1091 atom_op_switch, 0}, { 1092 atom_op_jump, ATOM_COND_ALWAYS}, { 1093 atom_op_jump, ATOM_COND_EQUAL}, { 1094 atom_op_jump, ATOM_COND_BELOW}, { 1095 atom_op_jump, ATOM_COND_ABOVE}, { 1096 atom_op_jump, ATOM_COND_BELOWOREQUAL}, { 1097 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { 1098 atom_op_jump, ATOM_COND_NOTEQUAL}, { 1099 atom_op_test, ATOM_ARG_REG}, { 1100 atom_op_test, ATOM_ARG_PS}, { 1101 atom_op_test, ATOM_ARG_WS}, { 1102 atom_op_test, ATOM_ARG_FB}, { 1103 atom_op_test, ATOM_ARG_PLL}, { 1104 atom_op_test, ATOM_ARG_MC}, { 1105 atom_op_delay, ATOM_UNIT_MILLISEC}, { 1106 atom_op_delay, ATOM_UNIT_MICROSEC}, { 1107 atom_op_calltable, 0}, { 1108 atom_op_repeat, 0}, { 1109 atom_op_clear, ATOM_ARG_REG}, { 1110 atom_op_clear, ATOM_ARG_PS}, { 1111 atom_op_clear, ATOM_ARG_WS}, { 1112 atom_op_clear, ATOM_ARG_FB}, { 1113 atom_op_clear, ATOM_ARG_PLL}, { 1114 atom_op_clear, ATOM_ARG_MC}, { 1115 atom_op_nop, 0}, { 1116 atom_op_eot, 0}, { 1117 atom_op_mask, ATOM_ARG_REG}, { 1118 atom_op_mask, ATOM_ARG_PS}, { 1119 atom_op_mask, ATOM_ARG_WS}, { 1120 atom_op_mask, ATOM_ARG_FB}, { 1121 atom_op_mask, ATOM_ARG_PLL}, { 1122 atom_op_mask, ATOM_ARG_MC}, { 1123 atom_op_postcard, 0}, { 1124 atom_op_beep, 0}, { 1125 atom_op_savereg, 0}, { 1126 atom_op_restorereg, 0}, { 1127 atom_op_setdatablock, 0}, { 1128 atom_op_xor, ATOM_ARG_REG}, { 1129 atom_op_xor, ATOM_ARG_PS}, { 1130 atom_op_xor, ATOM_ARG_WS}, { 1131 atom_op_xor, ATOM_ARG_FB}, { 1132 atom_op_xor, ATOM_ARG_PLL}, { 1133 atom_op_xor, ATOM_ARG_MC}, { 1134 atom_op_shl, ATOM_ARG_REG}, { 1135 atom_op_shl, ATOM_ARG_PS}, { 1136 atom_op_shl, ATOM_ARG_WS}, { 1137 atom_op_shl, ATOM_ARG_FB}, { 1138 atom_op_shl, ATOM_ARG_PLL}, { 1139 atom_op_shl, ATOM_ARG_MC}, { 1140 atom_op_shr, ATOM_ARG_REG}, { 1141 atom_op_shr, ATOM_ARG_PS}, { 1142 atom_op_shr, ATOM_ARG_WS}, { 1143 atom_op_shr, ATOM_ARG_FB}, { 1144 atom_op_shr, ATOM_ARG_PLL}, { 1145 atom_op_shr, ATOM_ARG_MC}, { 1146atom_op_debug, 0},}; 1147 1148static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) 1149{ 1150 int base = CU16(ctx->cmd_table + 4 + 2 * index); 1151 int len, ws, ps, ptr; 1152 unsigned char op; 1153 atom_exec_context ectx; 1154 int ret = 0; 1155 1156 if (!base) 1157 return -EINVAL; 1158 1159 len = CU16(base + ATOM_CT_SIZE_PTR); 1160 ws = CU8(base + ATOM_CT_WS_PTR); 1161 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; 1162 ptr = base + ATOM_CT_CODE_PTR; 1163 1164 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); 1165 1166 ectx.ctx = ctx; 1167 ectx.ps_shift = ps / 4; 1168 ectx.start = base; 1169 ectx.ps = params; 1170 ectx.abort = false; 1171 ectx.last_jump = 0; 1172 if (ws) 1173 ectx.ws = kzalloc(4 * ws, GFP_KERNEL); 1174 else 1175 ectx.ws = NULL; 1176 1177 debug_depth++; 1178 while (1) { 1179 op = CU8(ptr++); 1180 if (op < ATOM_OP_NAMES_CNT) 1181 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); 1182 else 1183 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); 1184 if (ectx.abort) { 1185 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", 1186 base, len, ws, ps, ptr - 1); 1187 ret = -EINVAL; 1188 goto free; 1189 } 1190 1191 if (op < ATOM_OP_CNT && op > 0) 1192 opcode_table[op].func(&ectx, &ptr, 1193 opcode_table[op].arg); 1194 else 1195 break; 1196 1197 if (op == ATOM_OP_EOT) 1198 break; 1199 } 1200 debug_depth--; 1201 SDEBUG("<<\n"); 1202 1203free: 1204 if (ws) 1205 kfree(ectx.ws); 1206 return ret; 1207} 1208 1209int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) 1210{ 1211 int r; 1212 1213 mutex_lock(&ctx->mutex); 1214 /* reset reg block */ 1215 ctx->reg_block = 0; 1216 /* reset fb window */ 1217 ctx->fb_base = 0; 1218 /* reset io mode */ 1219 ctx->io_mode = ATOM_IO_MM; 1220 r = atom_execute_table_locked(ctx, index, params); 1221 mutex_unlock(&ctx->mutex); 1222 return r; 1223} 1224 1225static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; 1226 1227static void atom_index_iio(struct atom_context *ctx, int base) 1228{ 1229 ctx->iio = kzalloc(2 * 256, GFP_KERNEL); 1230 while (CU8(base) == ATOM_IIO_START) { 1231 ctx->iio[CU8(base + 1)] = base + 2; 1232 base += 2; 1233 while (CU8(base) != ATOM_IIO_END) 1234 base += atom_iio_len[CU8(base)]; 1235 base += 3; 1236 } 1237} 1238 1239struct atom_context *atom_parse(struct card_info *card, void *bios) 1240{ 1241 int base; 1242 struct atom_context *ctx = 1243 kzalloc(sizeof(struct atom_context), GFP_KERNEL); 1244 char *str; 1245 char name[512]; 1246 int i; 1247 1248 ctx->card = card; 1249 ctx->bios = bios; 1250 1251 if (CU16(0) != ATOM_BIOS_MAGIC) { 1252 printk(KERN_INFO "Invalid BIOS magic.\n"); 1253 kfree(ctx); 1254 return NULL; 1255 } 1256 if (strncmp 1257 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, 1258 strlen(ATOM_ATI_MAGIC))) { 1259 printk(KERN_INFO "Invalid ATI magic.\n"); 1260 kfree(ctx); 1261 return NULL; 1262 } 1263 1264 base = CU16(ATOM_ROM_TABLE_PTR); 1265 if (strncmp 1266 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, 1267 strlen(ATOM_ROM_MAGIC))) { 1268 printk(KERN_INFO "Invalid ATOM magic.\n"); 1269 kfree(ctx); 1270 return NULL; 1271 } 1272 1273 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); 1274 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); 1275 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); 1276 1277 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); 1278 while (*str && ((*str == '\n') || (*str == '\r'))) 1279 str++; 1280 /* name string isn't always 0 terminated */ 1281 for (i = 0; i < 511; i++) { 1282 name[i] = str[i]; 1283 if (name[i] < '.' || name[i] > 'z') { 1284 name[i] = 0; 1285 break; 1286 } 1287 } 1288 printk(KERN_INFO "ATOM BIOS: %s\n", name); 1289 1290 return ctx; 1291} 1292 1293int atom_asic_init(struct atom_context *ctx) 1294{ 1295 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); 1296 uint32_t ps[16]; 1297 memset(ps, 0, 64); 1298 1299 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); 1300 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); 1301 if (!ps[0] || !ps[1]) 1302 return 1; 1303 1304 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) 1305 return 1; 1306 return atom_execute_table(ctx, ATOM_CMD_INIT, ps); 1307} 1308 1309void atom_destroy(struct atom_context *ctx) 1310{ 1311 if (ctx->iio) 1312 kfree(ctx->iio); 1313 kfree(ctx); 1314} 1315 1316bool atom_parse_data_header(struct atom_context *ctx, int index, 1317 uint16_t * size, uint8_t * frev, uint8_t * crev, 1318 uint16_t * data_start) 1319{ 1320 int offset = index * 2 + 4; 1321 int idx = CU16(ctx->data_table + offset); 1322 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); 1323 1324 if (!mdt[index]) 1325 return false; 1326 1327 if (size) 1328 *size = CU16(idx); 1329 if (frev) 1330 *frev = CU8(idx + 2); 1331 if (crev) 1332 *crev = CU8(idx + 3); 1333 *data_start = idx; 1334 return true; 1335} 1336 1337bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, 1338 uint8_t * crev) 1339{ 1340 int offset = index * 2 + 4; 1341 int idx = CU16(ctx->cmd_table + offset); 1342 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); 1343 1344 if (!mct[index]) 1345 return false; 1346 1347 if (frev) 1348 *frev = CU8(idx + 2); 1349 if (crev) 1350 *crev = CU8(idx + 3); 1351 return true; 1352} 1353 1354int atom_allocate_fb_scratch(struct atom_context *ctx) 1355{ 1356 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); 1357 uint16_t data_offset; 1358 int usage_bytes = 0; 1359 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; 1360 1361 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { 1362 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); 1363 1364 DRM_DEBUG("atom firmware requested %08x %dkb\n", 1365 firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware, 1366 firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb); 1367 1368 usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024; 1369 } 1370 if (usage_bytes == 0) 1371 usage_bytes = 20 * 1024; 1372 /* allocate some scratch memory */ 1373 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); 1374 if (!ctx->scratch) 1375 return -ENOMEM; 1376 return 0; 1377} 1378