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 <linux/string_helpers.h> 29 30 #include <asm/unaligned.h> 31 32 #include <drm/drm_device.h> 33 #include <drm/drm_util.h> 34 35 #define ATOM_DEBUG 36 37 #include "atom.h" 38 #include "atom-names.h" 39 #include "atom-bits.h" 40 #include "radeon.h" 41 42 #define ATOM_COND_ABOVE 0 43 #define ATOM_COND_ABOVEOREQUAL 1 44 #define ATOM_COND_ALWAYS 2 45 #define ATOM_COND_BELOW 3 46 #define ATOM_COND_BELOWOREQUAL 4 47 #define ATOM_COND_EQUAL 5 48 #define ATOM_COND_NOTEQUAL 6 49 50 #define ATOM_PORT_ATI 0 51 #define ATOM_PORT_PCI 1 52 #define ATOM_PORT_SYSIO 2 53 54 #define ATOM_UNIT_MICROSEC 0 55 #define ATOM_UNIT_MILLISEC 1 56 57 #define PLL_INDEX 2 58 #define PLL_DATA 3 59 60 typedef struct { 61 struct atom_context *ctx; 62 uint32_t *ps, *ws; 63 int ps_shift; 64 uint16_t start; 65 unsigned last_jump; 66 unsigned long last_jump_jiffies; 67 bool abort; 68 } atom_exec_context; 69 70 int atom_debug = 0; 71 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); 72 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); 73 74 static uint32_t atom_arg_mask[8] = { 75 0xFFFFFFFF, 0x0000FFFF, 0x00FFFF00, 0xFFFF0000, 76 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 77 }; 78 static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 }; 79 80 static int atom_dst_to_src[8][4] = { 81 /* translate destination alignment field to the source alignment encoding */ 82 {0, 0, 0, 0}, 83 {1, 2, 3, 0}, 84 {1, 2, 3, 0}, 85 {1, 2, 3, 0}, 86 {4, 5, 6, 7}, 87 {4, 5, 6, 7}, 88 {4, 5, 6, 7}, 89 {4, 5, 6, 7}, 90 }; 91 static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 }; 92 93 static int debug_depth = 0; 94 #ifdef ATOM_DEBUG 95 static void debug_print_spaces(int n) 96 { 97 while (n--) 98 printk(" "); 99 } 100 101 #ifdef DEBUG 102 #undef DEBUG 103 #endif 104 105 #define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) 106 #define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) 107 #else 108 #define DEBUG(...) do { } while (0) 109 #define SDEBUG(...) do { } while (0) 110 #endif 111 112 static uint32_t atom_iio_execute(struct atom_context *ctx, int base, 113 uint32_t index, uint32_t data) 114 { 115 struct radeon_device *rdev = ctx->card->dev->dev_private; 116 uint32_t temp = 0xCDCDCDCD; 117 118 while (1) 119 switch (CU8(base)) { 120 case ATOM_IIO_NOP: 121 base++; 122 break; 123 case ATOM_IIO_READ: 124 temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 125 base += 3; 126 break; 127 case ATOM_IIO_WRITE: 128 if (rdev->family == CHIP_RV515) 129 (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 130 ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp); 131 base += 3; 132 break; 133 case ATOM_IIO_CLEAR: 134 temp &= 135 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 136 CU8(base + 2)); 137 base += 3; 138 break; 139 case ATOM_IIO_SET: 140 temp |= 141 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + 142 2); 143 base += 3; 144 break; 145 case ATOM_IIO_MOVE_INDEX: 146 temp &= 147 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 148 CU8(base + 3)); 149 temp |= 150 ((index >> CU8(base + 2)) & 151 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 152 3); 153 base += 4; 154 break; 155 case ATOM_IIO_MOVE_DATA: 156 temp &= 157 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 158 CU8(base + 3)); 159 temp |= 160 ((data >> CU8(base + 2)) & 161 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 162 3); 163 base += 4; 164 break; 165 case ATOM_IIO_MOVE_ATTR: 166 temp &= 167 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 168 CU8(base + 3)); 169 temp |= 170 ((ctx-> 171 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - 172 CU8 173 (base 174 + 175 1)))) 176 << CU8(base + 3); 177 base += 4; 178 break; 179 case ATOM_IIO_END: 180 return temp; 181 default: 182 pr_info("Unknown IIO opcode\n"); 183 return 0; 184 } 185 } 186 187 static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, 188 int *ptr, uint32_t *saved, int print) 189 { 190 uint32_t idx, val = 0xCDCDCDCD, align, arg; 191 struct atom_context *gctx = ctx->ctx; 192 arg = attr & 7; 193 align = (attr >> 3) & 7; 194 switch (arg) { 195 case ATOM_ARG_REG: 196 idx = U16(*ptr); 197 (*ptr) += 2; 198 if (print) 199 DEBUG("REG[0x%04X]", idx); 200 idx += gctx->reg_block; 201 switch (gctx->io_mode) { 202 case ATOM_IO_MM: 203 val = gctx->card->reg_read(gctx->card, idx); 204 break; 205 case ATOM_IO_PCI: 206 pr_info("PCI registers are not implemented\n"); 207 return 0; 208 case ATOM_IO_SYSIO: 209 pr_info("SYSIO registers are not implemented\n"); 210 return 0; 211 default: 212 if (!(gctx->io_mode & 0x80)) { 213 pr_info("Bad IO mode\n"); 214 return 0; 215 } 216 if (!gctx->iio[gctx->io_mode & 0x7F]) { 217 pr_info("Undefined indirect IO read method %d\n", 218 gctx->io_mode & 0x7F); 219 return 0; 220 } 221 val = 222 atom_iio_execute(gctx, 223 gctx->iio[gctx->io_mode & 0x7F], 224 idx, 0); 225 } 226 break; 227 case ATOM_ARG_PS: 228 idx = U8(*ptr); 229 (*ptr)++; 230 /* get_unaligned_le32 avoids unaligned accesses from atombios 231 * tables, noticed on a DEC Alpha. */ 232 val = get_unaligned_le32((u32 *)&ctx->ps[idx]); 233 if (print) 234 DEBUG("PS[0x%02X,0x%04X]", idx, val); 235 break; 236 case ATOM_ARG_WS: 237 idx = U8(*ptr); 238 (*ptr)++; 239 if (print) 240 DEBUG("WS[0x%02X]", idx); 241 switch (idx) { 242 case ATOM_WS_QUOTIENT: 243 val = gctx->divmul[0]; 244 break; 245 case ATOM_WS_REMAINDER: 246 val = gctx->divmul[1]; 247 break; 248 case ATOM_WS_DATAPTR: 249 val = gctx->data_block; 250 break; 251 case ATOM_WS_SHIFT: 252 val = gctx->shift; 253 break; 254 case ATOM_WS_OR_MASK: 255 val = 1 << gctx->shift; 256 break; 257 case ATOM_WS_AND_MASK: 258 val = ~(1 << gctx->shift); 259 break; 260 case ATOM_WS_FB_WINDOW: 261 val = gctx->fb_base; 262 break; 263 case ATOM_WS_ATTRIBUTES: 264 val = gctx->io_attr; 265 break; 266 case ATOM_WS_REGPTR: 267 val = gctx->reg_block; 268 break; 269 default: 270 val = ctx->ws[idx]; 271 } 272 break; 273 case ATOM_ARG_ID: 274 idx = U16(*ptr); 275 (*ptr) += 2; 276 if (print) { 277 if (gctx->data_block) 278 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); 279 else 280 DEBUG("ID[0x%04X]", idx); 281 } 282 val = U32(idx + gctx->data_block); 283 break; 284 case ATOM_ARG_FB: 285 idx = U8(*ptr); 286 (*ptr)++; 287 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 288 DRM_ERROR("ATOM: fb read beyond scratch region: %d vs. %d\n", 289 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 290 val = 0; 291 } else 292 val = gctx->scratch[(gctx->fb_base / 4) + idx]; 293 if (print) 294 DEBUG("FB[0x%02X]", idx); 295 break; 296 case ATOM_ARG_IMM: 297 switch (align) { 298 case ATOM_SRC_DWORD: 299 val = U32(*ptr); 300 (*ptr) += 4; 301 if (print) 302 DEBUG("IMM 0x%08X\n", val); 303 return val; 304 case ATOM_SRC_WORD0: 305 case ATOM_SRC_WORD8: 306 case ATOM_SRC_WORD16: 307 val = U16(*ptr); 308 (*ptr) += 2; 309 if (print) 310 DEBUG("IMM 0x%04X\n", val); 311 return val; 312 case ATOM_SRC_BYTE0: 313 case ATOM_SRC_BYTE8: 314 case ATOM_SRC_BYTE16: 315 case ATOM_SRC_BYTE24: 316 val = U8(*ptr); 317 (*ptr)++; 318 if (print) 319 DEBUG("IMM 0x%02X\n", val); 320 return val; 321 } 322 return 0; 323 case ATOM_ARG_PLL: 324 idx = U8(*ptr); 325 (*ptr)++; 326 if (print) 327 DEBUG("PLL[0x%02X]", idx); 328 val = gctx->card->pll_read(gctx->card, idx); 329 break; 330 case ATOM_ARG_MC: 331 idx = U8(*ptr); 332 (*ptr)++; 333 if (print) 334 DEBUG("MC[0x%02X]", idx); 335 val = gctx->card->mc_read(gctx->card, idx); 336 break; 337 } 338 if (saved) 339 *saved = val; 340 val &= atom_arg_mask[align]; 341 val >>= atom_arg_shift[align]; 342 if (print) 343 switch (align) { 344 case ATOM_SRC_DWORD: 345 DEBUG(".[31:0] -> 0x%08X\n", val); 346 break; 347 case ATOM_SRC_WORD0: 348 DEBUG(".[15:0] -> 0x%04X\n", val); 349 break; 350 case ATOM_SRC_WORD8: 351 DEBUG(".[23:8] -> 0x%04X\n", val); 352 break; 353 case ATOM_SRC_WORD16: 354 DEBUG(".[31:16] -> 0x%04X\n", val); 355 break; 356 case ATOM_SRC_BYTE0: 357 DEBUG(".[7:0] -> 0x%02X\n", val); 358 break; 359 case ATOM_SRC_BYTE8: 360 DEBUG(".[15:8] -> 0x%02X\n", val); 361 break; 362 case ATOM_SRC_BYTE16: 363 DEBUG(".[23:16] -> 0x%02X\n", val); 364 break; 365 case ATOM_SRC_BYTE24: 366 DEBUG(".[31:24] -> 0x%02X\n", val); 367 break; 368 } 369 return val; 370 } 371 372 static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) 373 { 374 uint32_t align = (attr >> 3) & 7, arg = attr & 7; 375 switch (arg) { 376 case ATOM_ARG_REG: 377 case ATOM_ARG_ID: 378 (*ptr) += 2; 379 break; 380 case ATOM_ARG_PLL: 381 case ATOM_ARG_MC: 382 case ATOM_ARG_PS: 383 case ATOM_ARG_WS: 384 case ATOM_ARG_FB: 385 (*ptr)++; 386 break; 387 case ATOM_ARG_IMM: 388 switch (align) { 389 case ATOM_SRC_DWORD: 390 (*ptr) += 4; 391 return; 392 case ATOM_SRC_WORD0: 393 case ATOM_SRC_WORD8: 394 case ATOM_SRC_WORD16: 395 (*ptr) += 2; 396 return; 397 case ATOM_SRC_BYTE0: 398 case ATOM_SRC_BYTE8: 399 case ATOM_SRC_BYTE16: 400 case ATOM_SRC_BYTE24: 401 (*ptr)++; 402 return; 403 } 404 return; 405 } 406 } 407 408 static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) 409 { 410 return atom_get_src_int(ctx, attr, ptr, NULL, 1); 411 } 412 413 static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) 414 { 415 uint32_t val = 0xCDCDCDCD; 416 417 switch (align) { 418 case ATOM_SRC_DWORD: 419 val = U32(*ptr); 420 (*ptr) += 4; 421 break; 422 case ATOM_SRC_WORD0: 423 case ATOM_SRC_WORD8: 424 case ATOM_SRC_WORD16: 425 val = U16(*ptr); 426 (*ptr) += 2; 427 break; 428 case ATOM_SRC_BYTE0: 429 case ATOM_SRC_BYTE8: 430 case ATOM_SRC_BYTE16: 431 case ATOM_SRC_BYTE24: 432 val = U8(*ptr); 433 (*ptr)++; 434 break; 435 } 436 return val; 437 } 438 439 static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, 440 int *ptr, uint32_t *saved, int print) 441 { 442 return atom_get_src_int(ctx, 443 arg | atom_dst_to_src[(attr >> 3) & 444 7][(attr >> 6) & 3] << 3, 445 ptr, saved, print); 446 } 447 448 static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) 449 { 450 atom_skip_src_int(ctx, 451 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 452 3] << 3, ptr); 453 } 454 455 static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, 456 int *ptr, uint32_t val, uint32_t saved) 457 { 458 uint32_t align = 459 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = 460 val, idx; 461 struct atom_context *gctx = ctx->ctx; 462 old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; 463 val <<= atom_arg_shift[align]; 464 val &= atom_arg_mask[align]; 465 saved &= ~atom_arg_mask[align]; 466 val |= saved; 467 switch (arg) { 468 case ATOM_ARG_REG: 469 idx = U16(*ptr); 470 (*ptr) += 2; 471 DEBUG("REG[0x%04X]", idx); 472 idx += gctx->reg_block; 473 switch (gctx->io_mode) { 474 case ATOM_IO_MM: 475 if (idx == 0) 476 gctx->card->reg_write(gctx->card, idx, 477 val << 2); 478 else 479 gctx->card->reg_write(gctx->card, idx, val); 480 break; 481 case ATOM_IO_PCI: 482 pr_info("PCI registers are not implemented\n"); 483 return; 484 case ATOM_IO_SYSIO: 485 pr_info("SYSIO registers are not implemented\n"); 486 return; 487 default: 488 if (!(gctx->io_mode & 0x80)) { 489 pr_info("Bad IO mode\n"); 490 return; 491 } 492 if (!gctx->iio[gctx->io_mode & 0xFF]) { 493 pr_info("Undefined indirect IO write method %d\n", 494 gctx->io_mode & 0x7F); 495 return; 496 } 497 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], 498 idx, val); 499 } 500 break; 501 case ATOM_ARG_PS: 502 idx = U8(*ptr); 503 (*ptr)++; 504 DEBUG("PS[0x%02X]", idx); 505 ctx->ps[idx] = cpu_to_le32(val); 506 break; 507 case ATOM_ARG_WS: 508 idx = U8(*ptr); 509 (*ptr)++; 510 DEBUG("WS[0x%02X]", idx); 511 switch (idx) { 512 case ATOM_WS_QUOTIENT: 513 gctx->divmul[0] = val; 514 break; 515 case ATOM_WS_REMAINDER: 516 gctx->divmul[1] = val; 517 break; 518 case ATOM_WS_DATAPTR: 519 gctx->data_block = val; 520 break; 521 case ATOM_WS_SHIFT: 522 gctx->shift = val; 523 break; 524 case ATOM_WS_OR_MASK: 525 case ATOM_WS_AND_MASK: 526 break; 527 case ATOM_WS_FB_WINDOW: 528 gctx->fb_base = val; 529 break; 530 case ATOM_WS_ATTRIBUTES: 531 gctx->io_attr = val; 532 break; 533 case ATOM_WS_REGPTR: 534 gctx->reg_block = val; 535 break; 536 default: 537 ctx->ws[idx] = val; 538 } 539 break; 540 case ATOM_ARG_FB: 541 idx = U8(*ptr); 542 (*ptr)++; 543 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 544 DRM_ERROR("ATOM: fb write beyond scratch region: %d vs. %d\n", 545 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 546 } else 547 gctx->scratch[(gctx->fb_base / 4) + idx] = val; 548 DEBUG("FB[0x%02X]", idx); 549 break; 550 case ATOM_ARG_PLL: 551 idx = U8(*ptr); 552 (*ptr)++; 553 DEBUG("PLL[0x%02X]", idx); 554 gctx->card->pll_write(gctx->card, idx, val); 555 break; 556 case ATOM_ARG_MC: 557 idx = U8(*ptr); 558 (*ptr)++; 559 DEBUG("MC[0x%02X]", idx); 560 gctx->card->mc_write(gctx->card, idx, val); 561 return; 562 } 563 switch (align) { 564 case ATOM_SRC_DWORD: 565 DEBUG(".[31:0] <- 0x%08X\n", old_val); 566 break; 567 case ATOM_SRC_WORD0: 568 DEBUG(".[15:0] <- 0x%04X\n", old_val); 569 break; 570 case ATOM_SRC_WORD8: 571 DEBUG(".[23:8] <- 0x%04X\n", old_val); 572 break; 573 case ATOM_SRC_WORD16: 574 DEBUG(".[31:16] <- 0x%04X\n", old_val); 575 break; 576 case ATOM_SRC_BYTE0: 577 DEBUG(".[7:0] <- 0x%02X\n", old_val); 578 break; 579 case ATOM_SRC_BYTE8: 580 DEBUG(".[15:8] <- 0x%02X\n", old_val); 581 break; 582 case ATOM_SRC_BYTE16: 583 DEBUG(".[23:16] <- 0x%02X\n", old_val); 584 break; 585 case ATOM_SRC_BYTE24: 586 DEBUG(".[31:24] <- 0x%02X\n", old_val); 587 break; 588 } 589 } 590 591 static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg) 592 { 593 uint8_t attr = U8((*ptr)++); 594 uint32_t dst, src, saved; 595 int dptr = *ptr; 596 SDEBUG(" dst: "); 597 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 598 SDEBUG(" src: "); 599 src = atom_get_src(ctx, attr, ptr); 600 dst += src; 601 SDEBUG(" dst: "); 602 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 603 } 604 605 static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg) 606 { 607 uint8_t attr = U8((*ptr)++); 608 uint32_t dst, src, saved; 609 int dptr = *ptr; 610 SDEBUG(" dst: "); 611 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 612 SDEBUG(" src: "); 613 src = atom_get_src(ctx, attr, ptr); 614 dst &= src; 615 SDEBUG(" dst: "); 616 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 617 } 618 619 static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) 620 { 621 printk("ATOM BIOS beeped!\n"); 622 } 623 624 static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) 625 { 626 int idx = U8((*ptr)++); 627 int r = 0; 628 629 if (idx < ATOM_TABLE_NAMES_CNT) 630 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); 631 else 632 SDEBUG(" table: %d\n", idx); 633 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) 634 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); 635 if (r) { 636 ctx->abort = true; 637 } 638 } 639 640 static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) 641 { 642 uint8_t attr = U8((*ptr)++); 643 uint32_t saved; 644 int dptr = *ptr; 645 attr &= 0x38; 646 attr |= atom_def_dst[attr >> 3] << 6; 647 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 648 SDEBUG(" dst: "); 649 atom_put_dst(ctx, arg, attr, &dptr, 0, saved); 650 } 651 652 static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) 653 { 654 uint8_t attr = U8((*ptr)++); 655 uint32_t dst, src; 656 SDEBUG(" src1: "); 657 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 658 SDEBUG(" src2: "); 659 src = atom_get_src(ctx, attr, ptr); 660 ctx->ctx->cs_equal = (dst == src); 661 ctx->ctx->cs_above = (dst > src); 662 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", 663 ctx->ctx->cs_above ? "GT" : "LE"); 664 } 665 666 static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) 667 { 668 unsigned count = U8((*ptr)++); 669 SDEBUG(" count: %d\n", count); 670 if (arg == ATOM_UNIT_MICROSEC) 671 udelay(count); 672 else if (!drm_can_sleep()) 673 mdelay(count); 674 else 675 drm_msleep(count); 676 } 677 678 static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) 679 { 680 uint8_t attr = U8((*ptr)++); 681 uint32_t dst, src; 682 SDEBUG(" src1: "); 683 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 684 SDEBUG(" src2: "); 685 src = atom_get_src(ctx, attr, ptr); 686 if (src != 0) { 687 ctx->ctx->divmul[0] = dst / src; 688 ctx->ctx->divmul[1] = dst % src; 689 } else { 690 ctx->ctx->divmul[0] = 0; 691 ctx->ctx->divmul[1] = 0; 692 } 693 } 694 695 static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) 696 { 697 /* functionally, a nop */ 698 } 699 700 static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) 701 { 702 int execute = 0, target = U16(*ptr); 703 unsigned long cjiffies; 704 705 (*ptr) += 2; 706 switch (arg) { 707 case ATOM_COND_ABOVE: 708 execute = ctx->ctx->cs_above; 709 break; 710 case ATOM_COND_ABOVEOREQUAL: 711 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; 712 break; 713 case ATOM_COND_ALWAYS: 714 execute = 1; 715 break; 716 case ATOM_COND_BELOW: 717 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); 718 break; 719 case ATOM_COND_BELOWOREQUAL: 720 execute = !ctx->ctx->cs_above; 721 break; 722 case ATOM_COND_EQUAL: 723 execute = ctx->ctx->cs_equal; 724 break; 725 case ATOM_COND_NOTEQUAL: 726 execute = !ctx->ctx->cs_equal; 727 break; 728 } 729 if (arg != ATOM_COND_ALWAYS) 730 SDEBUG(" taken: %s\n", str_yes_no(execute)); 731 SDEBUG(" target: 0x%04X\n", target); 732 if (execute) { 733 if (ctx->last_jump == (ctx->start + target)) { 734 cjiffies = jiffies; 735 if (time_after(cjiffies, ctx->last_jump_jiffies)) { 736 cjiffies -= ctx->last_jump_jiffies; 737 if ((jiffies_to_msecs(cjiffies) > 5000)) { 738 DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n"); 739 ctx->abort = true; 740 } 741 } else { 742 /* jiffies wrap around we will just wait a little longer */ 743 ctx->last_jump_jiffies = jiffies; 744 } 745 } else { 746 ctx->last_jump = ctx->start + target; 747 ctx->last_jump_jiffies = jiffies; 748 } 749 *ptr = ctx->start + target; 750 } 751 } 752 753 static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) 754 { 755 uint8_t attr = U8((*ptr)++); 756 uint32_t dst, mask, src, saved; 757 int dptr = *ptr; 758 SDEBUG(" dst: "); 759 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 760 mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); 761 SDEBUG(" mask: 0x%08x", mask); 762 SDEBUG(" src: "); 763 src = atom_get_src(ctx, attr, ptr); 764 dst &= mask; 765 dst |= src; 766 SDEBUG(" dst: "); 767 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 768 } 769 770 static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) 771 { 772 uint8_t attr = U8((*ptr)++); 773 uint32_t src, saved; 774 int dptr = *ptr; 775 if (((attr >> 3) & 7) != ATOM_SRC_DWORD) 776 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 777 else { 778 atom_skip_dst(ctx, arg, attr, ptr); 779 saved = 0xCDCDCDCD; 780 } 781 SDEBUG(" src: "); 782 src = atom_get_src(ctx, attr, ptr); 783 SDEBUG(" dst: "); 784 atom_put_dst(ctx, arg, attr, &dptr, src, saved); 785 } 786 787 static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) 788 { 789 uint8_t attr = U8((*ptr)++); 790 uint32_t dst, src; 791 SDEBUG(" src1: "); 792 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 793 SDEBUG(" src2: "); 794 src = atom_get_src(ctx, attr, ptr); 795 ctx->ctx->divmul[0] = dst * src; 796 } 797 798 static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) 799 { 800 /* nothing */ 801 } 802 803 static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) 804 { 805 uint8_t attr = U8((*ptr)++); 806 uint32_t dst, src, saved; 807 int dptr = *ptr; 808 SDEBUG(" dst: "); 809 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 810 SDEBUG(" src: "); 811 src = atom_get_src(ctx, attr, ptr); 812 dst |= src; 813 SDEBUG(" dst: "); 814 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 815 } 816 817 static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) 818 { 819 uint8_t val = U8((*ptr)++); 820 SDEBUG("POST card output: 0x%02X\n", val); 821 } 822 823 static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) 824 { 825 pr_info("unimplemented!\n"); 826 } 827 828 static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) 829 { 830 pr_info("unimplemented!\n"); 831 } 832 833 static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) 834 { 835 pr_info("unimplemented!\n"); 836 } 837 838 static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) 839 { 840 int idx = U8(*ptr); 841 (*ptr)++; 842 SDEBUG(" block: %d\n", idx); 843 if (!idx) 844 ctx->ctx->data_block = 0; 845 else if (idx == 255) 846 ctx->ctx->data_block = ctx->start; 847 else 848 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); 849 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); 850 } 851 852 static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) 853 { 854 uint8_t attr = U8((*ptr)++); 855 SDEBUG(" fb_base: "); 856 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); 857 } 858 859 static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) 860 { 861 int port; 862 switch (arg) { 863 case ATOM_PORT_ATI: 864 port = U16(*ptr); 865 if (port < ATOM_IO_NAMES_CNT) 866 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); 867 else 868 SDEBUG(" port: %d\n", port); 869 if (!port) 870 ctx->ctx->io_mode = ATOM_IO_MM; 871 else 872 ctx->ctx->io_mode = ATOM_IO_IIO | port; 873 (*ptr) += 2; 874 break; 875 case ATOM_PORT_PCI: 876 ctx->ctx->io_mode = ATOM_IO_PCI; 877 (*ptr)++; 878 break; 879 case ATOM_PORT_SYSIO: 880 ctx->ctx->io_mode = ATOM_IO_SYSIO; 881 (*ptr)++; 882 break; 883 } 884 } 885 886 static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) 887 { 888 ctx->ctx->reg_block = U16(*ptr); 889 (*ptr) += 2; 890 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); 891 } 892 893 static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) 894 { 895 uint8_t attr = U8((*ptr)++), shift; 896 uint32_t saved, dst; 897 int dptr = *ptr; 898 attr &= 0x38; 899 attr |= atom_def_dst[attr >> 3] << 6; 900 SDEBUG(" dst: "); 901 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 902 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 903 SDEBUG(" shift: %d\n", shift); 904 dst <<= shift; 905 SDEBUG(" dst: "); 906 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 907 } 908 909 static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) 910 { 911 uint8_t attr = U8((*ptr)++), shift; 912 uint32_t saved, dst; 913 int dptr = *ptr; 914 attr &= 0x38; 915 attr |= atom_def_dst[attr >> 3] << 6; 916 SDEBUG(" dst: "); 917 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 918 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 919 SDEBUG(" shift: %d\n", shift); 920 dst >>= shift; 921 SDEBUG(" dst: "); 922 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 923 } 924 925 static void atom_op_shl(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 } 943 944 static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) 945 { 946 uint8_t attr = U8((*ptr)++), shift; 947 uint32_t saved, dst; 948 int dptr = *ptr; 949 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 950 SDEBUG(" dst: "); 951 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 952 /* op needs to full dst value */ 953 dst = saved; 954 shift = atom_get_src(ctx, attr, ptr); 955 SDEBUG(" shift: %d\n", shift); 956 dst >>= shift; 957 dst &= atom_arg_mask[dst_align]; 958 dst >>= atom_arg_shift[dst_align]; 959 SDEBUG(" dst: "); 960 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 961 } 962 963 static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) 964 { 965 uint8_t attr = U8((*ptr)++); 966 uint32_t dst, src, saved; 967 int dptr = *ptr; 968 SDEBUG(" dst: "); 969 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 970 SDEBUG(" src: "); 971 src = atom_get_src(ctx, attr, ptr); 972 dst -= src; 973 SDEBUG(" dst: "); 974 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 975 } 976 977 static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) 978 { 979 uint8_t attr = U8((*ptr)++); 980 uint32_t src, val, target; 981 SDEBUG(" switch: "); 982 src = atom_get_src(ctx, attr, ptr); 983 while (U16(*ptr) != ATOM_CASE_END) 984 if (U8(*ptr) == ATOM_CASE_MAGIC) { 985 (*ptr)++; 986 SDEBUG(" case: "); 987 val = 988 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, 989 ptr); 990 target = U16(*ptr); 991 if (val == src) { 992 SDEBUG(" target: %04X\n", target); 993 *ptr = ctx->start + target; 994 return; 995 } 996 (*ptr) += 2; 997 } else { 998 pr_info("Bad case\n"); 999 return; 1000 } 1001 (*ptr) += 2; 1002 } 1003 1004 static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) 1005 { 1006 uint8_t attr = U8((*ptr)++); 1007 uint32_t dst, src; 1008 SDEBUG(" src1: "); 1009 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 1010 SDEBUG(" src2: "); 1011 src = atom_get_src(ctx, attr, ptr); 1012 ctx->ctx->cs_equal = ((dst & src) == 0); 1013 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); 1014 } 1015 1016 static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) 1017 { 1018 uint8_t attr = U8((*ptr)++); 1019 uint32_t dst, src, saved; 1020 int dptr = *ptr; 1021 SDEBUG(" dst: "); 1022 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 1023 SDEBUG(" src: "); 1024 src = atom_get_src(ctx, attr, ptr); 1025 dst ^= src; 1026 SDEBUG(" dst: "); 1027 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 1028 } 1029 1030 static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) 1031 { 1032 pr_info("unimplemented!\n"); 1033 } 1034 1035 static struct { 1036 void (*func) (atom_exec_context *, int *, int); 1037 int arg; 1038 } opcode_table[ATOM_OP_CNT] = { 1039 { 1040 NULL, 0}, { 1041 atom_op_move, ATOM_ARG_REG}, { 1042 atom_op_move, ATOM_ARG_PS}, { 1043 atom_op_move, ATOM_ARG_WS}, { 1044 atom_op_move, ATOM_ARG_FB}, { 1045 atom_op_move, ATOM_ARG_PLL}, { 1046 atom_op_move, ATOM_ARG_MC}, { 1047 atom_op_and, ATOM_ARG_REG}, { 1048 atom_op_and, ATOM_ARG_PS}, { 1049 atom_op_and, ATOM_ARG_WS}, { 1050 atom_op_and, ATOM_ARG_FB}, { 1051 atom_op_and, ATOM_ARG_PLL}, { 1052 atom_op_and, ATOM_ARG_MC}, { 1053 atom_op_or, ATOM_ARG_REG}, { 1054 atom_op_or, ATOM_ARG_PS}, { 1055 atom_op_or, ATOM_ARG_WS}, { 1056 atom_op_or, ATOM_ARG_FB}, { 1057 atom_op_or, ATOM_ARG_PLL}, { 1058 atom_op_or, ATOM_ARG_MC}, { 1059 atom_op_shift_left, ATOM_ARG_REG}, { 1060 atom_op_shift_left, ATOM_ARG_PS}, { 1061 atom_op_shift_left, ATOM_ARG_WS}, { 1062 atom_op_shift_left, ATOM_ARG_FB}, { 1063 atom_op_shift_left, ATOM_ARG_PLL}, { 1064 atom_op_shift_left, ATOM_ARG_MC}, { 1065 atom_op_shift_right, ATOM_ARG_REG}, { 1066 atom_op_shift_right, ATOM_ARG_PS}, { 1067 atom_op_shift_right, ATOM_ARG_WS}, { 1068 atom_op_shift_right, ATOM_ARG_FB}, { 1069 atom_op_shift_right, ATOM_ARG_PLL}, { 1070 atom_op_shift_right, ATOM_ARG_MC}, { 1071 atom_op_mul, ATOM_ARG_REG}, { 1072 atom_op_mul, ATOM_ARG_PS}, { 1073 atom_op_mul, ATOM_ARG_WS}, { 1074 atom_op_mul, ATOM_ARG_FB}, { 1075 atom_op_mul, ATOM_ARG_PLL}, { 1076 atom_op_mul, ATOM_ARG_MC}, { 1077 atom_op_div, ATOM_ARG_REG}, { 1078 atom_op_div, ATOM_ARG_PS}, { 1079 atom_op_div, ATOM_ARG_WS}, { 1080 atom_op_div, ATOM_ARG_FB}, { 1081 atom_op_div, ATOM_ARG_PLL}, { 1082 atom_op_div, ATOM_ARG_MC}, { 1083 atom_op_add, ATOM_ARG_REG}, { 1084 atom_op_add, ATOM_ARG_PS}, { 1085 atom_op_add, ATOM_ARG_WS}, { 1086 atom_op_add, ATOM_ARG_FB}, { 1087 atom_op_add, ATOM_ARG_PLL}, { 1088 atom_op_add, ATOM_ARG_MC}, { 1089 atom_op_sub, ATOM_ARG_REG}, { 1090 atom_op_sub, ATOM_ARG_PS}, { 1091 atom_op_sub, ATOM_ARG_WS}, { 1092 atom_op_sub, ATOM_ARG_FB}, { 1093 atom_op_sub, ATOM_ARG_PLL}, { 1094 atom_op_sub, ATOM_ARG_MC}, { 1095 atom_op_setport, ATOM_PORT_ATI}, { 1096 atom_op_setport, ATOM_PORT_PCI}, { 1097 atom_op_setport, ATOM_PORT_SYSIO}, { 1098 atom_op_setregblock, 0}, { 1099 atom_op_setfbbase, 0}, { 1100 atom_op_compare, ATOM_ARG_REG}, { 1101 atom_op_compare, ATOM_ARG_PS}, { 1102 atom_op_compare, ATOM_ARG_WS}, { 1103 atom_op_compare, ATOM_ARG_FB}, { 1104 atom_op_compare, ATOM_ARG_PLL}, { 1105 atom_op_compare, ATOM_ARG_MC}, { 1106 atom_op_switch, 0}, { 1107 atom_op_jump, ATOM_COND_ALWAYS}, { 1108 atom_op_jump, ATOM_COND_EQUAL}, { 1109 atom_op_jump, ATOM_COND_BELOW}, { 1110 atom_op_jump, ATOM_COND_ABOVE}, { 1111 atom_op_jump, ATOM_COND_BELOWOREQUAL}, { 1112 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { 1113 atom_op_jump, ATOM_COND_NOTEQUAL}, { 1114 atom_op_test, ATOM_ARG_REG}, { 1115 atom_op_test, ATOM_ARG_PS}, { 1116 atom_op_test, ATOM_ARG_WS}, { 1117 atom_op_test, ATOM_ARG_FB}, { 1118 atom_op_test, ATOM_ARG_PLL}, { 1119 atom_op_test, ATOM_ARG_MC}, { 1120 atom_op_delay, ATOM_UNIT_MILLISEC}, { 1121 atom_op_delay, ATOM_UNIT_MICROSEC}, { 1122 atom_op_calltable, 0}, { 1123 atom_op_repeat, 0}, { 1124 atom_op_clear, ATOM_ARG_REG}, { 1125 atom_op_clear, ATOM_ARG_PS}, { 1126 atom_op_clear, ATOM_ARG_WS}, { 1127 atom_op_clear, ATOM_ARG_FB}, { 1128 atom_op_clear, ATOM_ARG_PLL}, { 1129 atom_op_clear, ATOM_ARG_MC}, { 1130 atom_op_nop, 0}, { 1131 atom_op_eot, 0}, { 1132 atom_op_mask, ATOM_ARG_REG}, { 1133 atom_op_mask, ATOM_ARG_PS}, { 1134 atom_op_mask, ATOM_ARG_WS}, { 1135 atom_op_mask, ATOM_ARG_FB}, { 1136 atom_op_mask, ATOM_ARG_PLL}, { 1137 atom_op_mask, ATOM_ARG_MC}, { 1138 atom_op_postcard, 0}, { 1139 atom_op_beep, 0}, { 1140 atom_op_savereg, 0}, { 1141 atom_op_restorereg, 0}, { 1142 atom_op_setdatablock, 0}, { 1143 atom_op_xor, ATOM_ARG_REG}, { 1144 atom_op_xor, ATOM_ARG_PS}, { 1145 atom_op_xor, ATOM_ARG_WS}, { 1146 atom_op_xor, ATOM_ARG_FB}, { 1147 atom_op_xor, ATOM_ARG_PLL}, { 1148 atom_op_xor, ATOM_ARG_MC}, { 1149 atom_op_shl, ATOM_ARG_REG}, { 1150 atom_op_shl, ATOM_ARG_PS}, { 1151 atom_op_shl, ATOM_ARG_WS}, { 1152 atom_op_shl, ATOM_ARG_FB}, { 1153 atom_op_shl, ATOM_ARG_PLL}, { 1154 atom_op_shl, ATOM_ARG_MC}, { 1155 atom_op_shr, ATOM_ARG_REG}, { 1156 atom_op_shr, ATOM_ARG_PS}, { 1157 atom_op_shr, ATOM_ARG_WS}, { 1158 atom_op_shr, ATOM_ARG_FB}, { 1159 atom_op_shr, ATOM_ARG_PLL}, { 1160 atom_op_shr, ATOM_ARG_MC}, { 1161 atom_op_debug, 0},}; 1162 1163 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) 1164 { 1165 int base = CU16(ctx->cmd_table + 4 + 2 * index); 1166 int len, ws, ps, ptr; 1167 unsigned char op; 1168 atom_exec_context ectx; 1169 int ret = 0; 1170 1171 if (!base) 1172 return -EINVAL; 1173 1174 len = CU16(base + ATOM_CT_SIZE_PTR); 1175 ws = CU8(base + ATOM_CT_WS_PTR); 1176 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; 1177 ptr = base + ATOM_CT_CODE_PTR; 1178 1179 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); 1180 1181 ectx.ctx = ctx; 1182 ectx.ps_shift = ps / 4; 1183 ectx.start = base; 1184 ectx.ps = params; 1185 ectx.abort = false; 1186 ectx.last_jump = 0; 1187 if (ws) 1188 ectx.ws = kcalloc(4, ws, GFP_KERNEL); 1189 else 1190 ectx.ws = NULL; 1191 1192 debug_depth++; 1193 while (1) { 1194 op = CU8(ptr++); 1195 if (op < ATOM_OP_NAMES_CNT) 1196 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); 1197 else 1198 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); 1199 if (ectx.abort) { 1200 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", 1201 base, len, ws, ps, ptr - 1); 1202 ret = -EINVAL; 1203 goto free; 1204 } 1205 1206 if (op < ATOM_OP_CNT && op > 0) 1207 opcode_table[op].func(&ectx, &ptr, 1208 opcode_table[op].arg); 1209 else 1210 break; 1211 1212 if (op == ATOM_OP_EOT) 1213 break; 1214 } 1215 debug_depth--; 1216 SDEBUG("<<\n"); 1217 1218 free: 1219 kfree(ectx.ws); 1220 return ret; 1221 } 1222 1223 int atom_execute_table_scratch_unlocked(struct atom_context *ctx, int index, uint32_t * params) 1224 { 1225 int r; 1226 1227 mutex_lock(&ctx->mutex); 1228 /* reset data block */ 1229 ctx->data_block = 0; 1230 /* reset reg block */ 1231 ctx->reg_block = 0; 1232 /* reset fb window */ 1233 ctx->fb_base = 0; 1234 /* reset io mode */ 1235 ctx->io_mode = ATOM_IO_MM; 1236 /* reset divmul */ 1237 ctx->divmul[0] = 0; 1238 ctx->divmul[1] = 0; 1239 r = atom_execute_table_locked(ctx, index, params); 1240 mutex_unlock(&ctx->mutex); 1241 return r; 1242 } 1243 1244 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) 1245 { 1246 int r; 1247 mutex_lock(&ctx->scratch_mutex); 1248 r = atom_execute_table_scratch_unlocked(ctx, index, params); 1249 mutex_unlock(&ctx->scratch_mutex); 1250 return r; 1251 } 1252 1253 static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; 1254 1255 static void atom_index_iio(struct atom_context *ctx, int base) 1256 { 1257 ctx->iio = kzalloc(2 * 256, GFP_KERNEL); 1258 if (!ctx->iio) 1259 return; 1260 while (CU8(base) == ATOM_IIO_START) { 1261 ctx->iio[CU8(base + 1)] = base + 2; 1262 base += 2; 1263 while (CU8(base) != ATOM_IIO_END) 1264 base += atom_iio_len[CU8(base)]; 1265 base += 3; 1266 } 1267 } 1268 1269 struct atom_context *atom_parse(struct card_info *card, void *bios) 1270 { 1271 int base; 1272 struct atom_context *ctx = 1273 kzalloc(sizeof(struct atom_context), GFP_KERNEL); 1274 char *str; 1275 char name[512]; 1276 int i; 1277 1278 if (!ctx) 1279 return NULL; 1280 1281 ctx->card = card; 1282 ctx->bios = bios; 1283 1284 if (CU16(0) != ATOM_BIOS_MAGIC) { 1285 pr_info("Invalid BIOS magic\n"); 1286 kfree(ctx); 1287 return NULL; 1288 } 1289 if (strncmp 1290 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, 1291 strlen(ATOM_ATI_MAGIC))) { 1292 pr_info("Invalid ATI magic\n"); 1293 kfree(ctx); 1294 return NULL; 1295 } 1296 1297 base = CU16(ATOM_ROM_TABLE_PTR); 1298 if (strncmp 1299 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, 1300 strlen(ATOM_ROM_MAGIC))) { 1301 pr_info("Invalid ATOM magic\n"); 1302 kfree(ctx); 1303 return NULL; 1304 } 1305 1306 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); 1307 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); 1308 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); 1309 if (!ctx->iio) { 1310 atom_destroy(ctx); 1311 return NULL; 1312 } 1313 1314 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); 1315 while (*str && ((*str == '\n') || (*str == '\r'))) 1316 str++; 1317 /* name string isn't always 0 terminated */ 1318 for (i = 0; i < 511; i++) { 1319 name[i] = str[i]; 1320 if (name[i] < '.' || name[i] > 'z') { 1321 name[i] = 0; 1322 break; 1323 } 1324 } 1325 pr_info("ATOM BIOS: %s\n", name); 1326 1327 return ctx; 1328 } 1329 1330 int atom_asic_init(struct atom_context *ctx) 1331 { 1332 struct radeon_device *rdev = ctx->card->dev->dev_private; 1333 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); 1334 uint32_t ps[16]; 1335 int ret; 1336 1337 memset(ps, 0, 64); 1338 1339 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); 1340 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); 1341 if (!ps[0] || !ps[1]) 1342 return 1; 1343 1344 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) 1345 return 1; 1346 ret = atom_execute_table(ctx, ATOM_CMD_INIT, ps); 1347 if (ret) 1348 return ret; 1349 1350 memset(ps, 0, 64); 1351 1352 if (rdev->family < CHIP_R600) { 1353 if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL)) 1354 atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps); 1355 } 1356 return ret; 1357 } 1358 1359 void atom_destroy(struct atom_context *ctx) 1360 { 1361 kfree(ctx->iio); 1362 kfree(ctx); 1363 } 1364 1365 bool atom_parse_data_header(struct atom_context *ctx, int index, 1366 uint16_t * size, uint8_t * frev, uint8_t * crev, 1367 uint16_t * data_start) 1368 { 1369 int offset = index * 2 + 4; 1370 int idx = CU16(ctx->data_table + offset); 1371 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); 1372 1373 if (!mdt[index]) 1374 return false; 1375 1376 if (size) 1377 *size = CU16(idx); 1378 if (frev) 1379 *frev = CU8(idx + 2); 1380 if (crev) 1381 *crev = CU8(idx + 3); 1382 *data_start = idx; 1383 return true; 1384 } 1385 1386 bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, 1387 uint8_t * crev) 1388 { 1389 int offset = index * 2 + 4; 1390 int idx = CU16(ctx->cmd_table + offset); 1391 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); 1392 1393 if (!mct[index]) 1394 return false; 1395 1396 if (frev) 1397 *frev = CU8(idx + 2); 1398 if (crev) 1399 *crev = CU8(idx + 3); 1400 return true; 1401 } 1402 1403 int atom_allocate_fb_scratch(struct atom_context *ctx) 1404 { 1405 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); 1406 uint16_t data_offset; 1407 int usage_bytes = 0; 1408 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; 1409 1410 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { 1411 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); 1412 1413 DRM_DEBUG("atom firmware requested %08x %dkb\n", 1414 le32_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware), 1415 le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb)); 1416 1417 usage_bytes = le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb) * 1024; 1418 } 1419 ctx->scratch_size_bytes = 0; 1420 if (usage_bytes == 0) 1421 usage_bytes = 20 * 1024; 1422 /* allocate some scratch memory */ 1423 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); 1424 if (!ctx->scratch) 1425 return -ENOMEM; 1426 ctx->scratch_size_bytes = usage_bytes; 1427 return 0; 1428 } 1429