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 29 #include <asm/unaligned.h> 30 31 #include <drm/drm_device.h> 32 #include <drm/drm_util.h> 33 34 #define ATOM_DEBUG 35 36 #include "atom.h" 37 #include "atom-names.h" 38 #include "atom-bits.h" 39 #include "radeon.h" 40 41 #define ATOM_COND_ABOVE 0 42 #define ATOM_COND_ABOVEOREQUAL 1 43 #define ATOM_COND_ALWAYS 2 44 #define ATOM_COND_BELOW 3 45 #define ATOM_COND_BELOWOREQUAL 4 46 #define ATOM_COND_EQUAL 5 47 #define ATOM_COND_NOTEQUAL 6 48 49 #define ATOM_PORT_ATI 0 50 #define ATOM_PORT_PCI 1 51 #define ATOM_PORT_SYSIO 2 52 53 #define ATOM_UNIT_MICROSEC 0 54 #define ATOM_UNIT_MILLISEC 1 55 56 #define PLL_INDEX 2 57 #define PLL_DATA 3 58 59 typedef struct { 60 struct atom_context *ctx; 61 uint32_t *ps, *ws; 62 int ps_shift; 63 uint16_t start; 64 unsigned last_jump; 65 unsigned long last_jump_jiffies; 66 bool abort; 67 } atom_exec_context; 68 69 int atom_debug = 0; 70 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); 71 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); 72 73 static uint32_t atom_arg_mask[8] = { 74 0xFFFFFFFF, 0x0000FFFF, 0x00FFFF00, 0xFFFF0000, 75 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 76 }; 77 static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 }; 78 79 static int atom_dst_to_src[8][4] = { 80 /* translate destination alignment field to the source alignment encoding */ 81 {0, 0, 0, 0}, 82 {1, 2, 3, 0}, 83 {1, 2, 3, 0}, 84 {1, 2, 3, 0}, 85 {4, 5, 6, 7}, 86 {4, 5, 6, 7}, 87 {4, 5, 6, 7}, 88 {4, 5, 6, 7}, 89 }; 90 static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 }; 91 92 static int debug_depth = 0; 93 #ifdef ATOM_DEBUG 94 static void debug_print_spaces(int n) 95 { 96 while (n--) 97 printk(" "); 98 } 99 100 #define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) 101 #define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) 102 #else 103 #define DEBUG(...) do { } while (0) 104 #define SDEBUG(...) do { } while (0) 105 #endif 106 107 static uint32_t atom_iio_execute(struct atom_context *ctx, int base, 108 uint32_t index, uint32_t data) 109 { 110 struct radeon_device *rdev = ctx->card->dev->dev_private; 111 uint32_t temp = 0xCDCDCDCD; 112 113 while (1) 114 switch (CU8(base)) { 115 case ATOM_IIO_NOP: 116 base++; 117 break; 118 case ATOM_IIO_READ: 119 temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 120 base += 3; 121 break; 122 case ATOM_IIO_WRITE: 123 if (rdev->family == CHIP_RV515) 124 (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 125 ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp); 126 base += 3; 127 break; 128 case ATOM_IIO_CLEAR: 129 temp &= 130 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 131 CU8(base + 2)); 132 base += 3; 133 break; 134 case ATOM_IIO_SET: 135 temp |= 136 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + 137 2); 138 base += 3; 139 break; 140 case ATOM_IIO_MOVE_INDEX: 141 temp &= 142 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 143 CU8(base + 3)); 144 temp |= 145 ((index >> CU8(base + 2)) & 146 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 147 3); 148 base += 4; 149 break; 150 case ATOM_IIO_MOVE_DATA: 151 temp &= 152 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 153 CU8(base + 3)); 154 temp |= 155 ((data >> CU8(base + 2)) & 156 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 157 3); 158 base += 4; 159 break; 160 case ATOM_IIO_MOVE_ATTR: 161 temp &= 162 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 163 CU8(base + 3)); 164 temp |= 165 ((ctx-> 166 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - 167 CU8 168 (base 169 + 170 1)))) 171 << CU8(base + 3); 172 base += 4; 173 break; 174 case ATOM_IIO_END: 175 return temp; 176 default: 177 pr_info("Unknown IIO opcode\n"); 178 return 0; 179 } 180 } 181 182 static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, 183 int *ptr, uint32_t *saved, int print) 184 { 185 uint32_t idx, val = 0xCDCDCDCD, align, arg; 186 struct atom_context *gctx = ctx->ctx; 187 arg = attr & 7; 188 align = (attr >> 3) & 7; 189 switch (arg) { 190 case ATOM_ARG_REG: 191 idx = U16(*ptr); 192 (*ptr) += 2; 193 if (print) 194 DEBUG("REG[0x%04X]", idx); 195 idx += gctx->reg_block; 196 switch (gctx->io_mode) { 197 case ATOM_IO_MM: 198 val = gctx->card->reg_read(gctx->card, idx); 199 break; 200 case ATOM_IO_PCI: 201 pr_info("PCI registers are not implemented\n"); 202 return 0; 203 case ATOM_IO_SYSIO: 204 pr_info("SYSIO registers are not implemented\n"); 205 return 0; 206 default: 207 if (!(gctx->io_mode & 0x80)) { 208 pr_info("Bad IO mode\n"); 209 return 0; 210 } 211 if (!gctx->iio[gctx->io_mode & 0x7F]) { 212 pr_info("Undefined indirect IO read method %d\n", 213 gctx->io_mode & 0x7F); 214 return 0; 215 } 216 val = 217 atom_iio_execute(gctx, 218 gctx->iio[gctx->io_mode & 0x7F], 219 idx, 0); 220 } 221 break; 222 case ATOM_ARG_PS: 223 idx = U8(*ptr); 224 (*ptr)++; 225 /* get_unaligned_le32 avoids unaligned accesses from atombios 226 * tables, noticed on a DEC Alpha. */ 227 val = get_unaligned_le32((u32 *)&ctx->ps[idx]); 228 if (print) 229 DEBUG("PS[0x%02X,0x%04X]", idx, val); 230 break; 231 case ATOM_ARG_WS: 232 idx = U8(*ptr); 233 (*ptr)++; 234 if (print) 235 DEBUG("WS[0x%02X]", idx); 236 switch (idx) { 237 case ATOM_WS_QUOTIENT: 238 val = gctx->divmul[0]; 239 break; 240 case ATOM_WS_REMAINDER: 241 val = gctx->divmul[1]; 242 break; 243 case ATOM_WS_DATAPTR: 244 val = gctx->data_block; 245 break; 246 case ATOM_WS_SHIFT: 247 val = gctx->shift; 248 break; 249 case ATOM_WS_OR_MASK: 250 val = 1 << gctx->shift; 251 break; 252 case ATOM_WS_AND_MASK: 253 val = ~(1 << gctx->shift); 254 break; 255 case ATOM_WS_FB_WINDOW: 256 val = gctx->fb_base; 257 break; 258 case ATOM_WS_ATTRIBUTES: 259 val = gctx->io_attr; 260 break; 261 case ATOM_WS_REGPTR: 262 val = gctx->reg_block; 263 break; 264 default: 265 val = ctx->ws[idx]; 266 } 267 break; 268 case ATOM_ARG_ID: 269 idx = U16(*ptr); 270 (*ptr) += 2; 271 if (print) { 272 if (gctx->data_block) 273 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); 274 else 275 DEBUG("ID[0x%04X]", idx); 276 } 277 val = U32(idx + gctx->data_block); 278 break; 279 case ATOM_ARG_FB: 280 idx = U8(*ptr); 281 (*ptr)++; 282 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 283 DRM_ERROR("ATOM: fb read beyond scratch region: %d vs. %d\n", 284 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 285 val = 0; 286 } else 287 val = gctx->scratch[(gctx->fb_base / 4) + idx]; 288 if (print) 289 DEBUG("FB[0x%02X]", idx); 290 break; 291 case ATOM_ARG_IMM: 292 switch (align) { 293 case ATOM_SRC_DWORD: 294 val = U32(*ptr); 295 (*ptr) += 4; 296 if (print) 297 DEBUG("IMM 0x%08X\n", val); 298 return val; 299 case ATOM_SRC_WORD0: 300 case ATOM_SRC_WORD8: 301 case ATOM_SRC_WORD16: 302 val = U16(*ptr); 303 (*ptr) += 2; 304 if (print) 305 DEBUG("IMM 0x%04X\n", val); 306 return val; 307 case ATOM_SRC_BYTE0: 308 case ATOM_SRC_BYTE8: 309 case ATOM_SRC_BYTE16: 310 case ATOM_SRC_BYTE24: 311 val = U8(*ptr); 312 (*ptr)++; 313 if (print) 314 DEBUG("IMM 0x%02X\n", val); 315 return val; 316 } 317 return 0; 318 case ATOM_ARG_PLL: 319 idx = U8(*ptr); 320 (*ptr)++; 321 if (print) 322 DEBUG("PLL[0x%02X]", idx); 323 val = gctx->card->pll_read(gctx->card, idx); 324 break; 325 case ATOM_ARG_MC: 326 idx = U8(*ptr); 327 (*ptr)++; 328 if (print) 329 DEBUG("MC[0x%02X]", idx); 330 val = gctx->card->mc_read(gctx->card, idx); 331 break; 332 } 333 if (saved) 334 *saved = val; 335 val &= atom_arg_mask[align]; 336 val >>= atom_arg_shift[align]; 337 if (print) 338 switch (align) { 339 case ATOM_SRC_DWORD: 340 DEBUG(".[31:0] -> 0x%08X\n", val); 341 break; 342 case ATOM_SRC_WORD0: 343 DEBUG(".[15:0] -> 0x%04X\n", val); 344 break; 345 case ATOM_SRC_WORD8: 346 DEBUG(".[23:8] -> 0x%04X\n", val); 347 break; 348 case ATOM_SRC_WORD16: 349 DEBUG(".[31:16] -> 0x%04X\n", val); 350 break; 351 case ATOM_SRC_BYTE0: 352 DEBUG(".[7:0] -> 0x%02X\n", val); 353 break; 354 case ATOM_SRC_BYTE8: 355 DEBUG(".[15:8] -> 0x%02X\n", val); 356 break; 357 case ATOM_SRC_BYTE16: 358 DEBUG(".[23:16] -> 0x%02X\n", val); 359 break; 360 case ATOM_SRC_BYTE24: 361 DEBUG(".[31:24] -> 0x%02X\n", val); 362 break; 363 } 364 return val; 365 } 366 367 static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) 368 { 369 uint32_t align = (attr >> 3) & 7, arg = attr & 7; 370 switch (arg) { 371 case ATOM_ARG_REG: 372 case ATOM_ARG_ID: 373 (*ptr) += 2; 374 break; 375 case ATOM_ARG_PLL: 376 case ATOM_ARG_MC: 377 case ATOM_ARG_PS: 378 case ATOM_ARG_WS: 379 case ATOM_ARG_FB: 380 (*ptr)++; 381 break; 382 case ATOM_ARG_IMM: 383 switch (align) { 384 case ATOM_SRC_DWORD: 385 (*ptr) += 4; 386 return; 387 case ATOM_SRC_WORD0: 388 case ATOM_SRC_WORD8: 389 case ATOM_SRC_WORD16: 390 (*ptr) += 2; 391 return; 392 case ATOM_SRC_BYTE0: 393 case ATOM_SRC_BYTE8: 394 case ATOM_SRC_BYTE16: 395 case ATOM_SRC_BYTE24: 396 (*ptr)++; 397 return; 398 } 399 return; 400 } 401 } 402 403 static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) 404 { 405 return atom_get_src_int(ctx, attr, ptr, NULL, 1); 406 } 407 408 static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) 409 { 410 uint32_t val = 0xCDCDCDCD; 411 412 switch (align) { 413 case ATOM_SRC_DWORD: 414 val = U32(*ptr); 415 (*ptr) += 4; 416 break; 417 case ATOM_SRC_WORD0: 418 case ATOM_SRC_WORD8: 419 case ATOM_SRC_WORD16: 420 val = U16(*ptr); 421 (*ptr) += 2; 422 break; 423 case ATOM_SRC_BYTE0: 424 case ATOM_SRC_BYTE8: 425 case ATOM_SRC_BYTE16: 426 case ATOM_SRC_BYTE24: 427 val = U8(*ptr); 428 (*ptr)++; 429 break; 430 } 431 return val; 432 } 433 434 static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, 435 int *ptr, uint32_t *saved, int print) 436 { 437 return atom_get_src_int(ctx, 438 arg | atom_dst_to_src[(attr >> 3) & 439 7][(attr >> 6) & 3] << 3, 440 ptr, saved, print); 441 } 442 443 static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) 444 { 445 atom_skip_src_int(ctx, 446 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 447 3] << 3, ptr); 448 } 449 450 static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, 451 int *ptr, uint32_t val, uint32_t saved) 452 { 453 uint32_t align = 454 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = 455 val, idx; 456 struct atom_context *gctx = ctx->ctx; 457 old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; 458 val <<= atom_arg_shift[align]; 459 val &= atom_arg_mask[align]; 460 saved &= ~atom_arg_mask[align]; 461 val |= saved; 462 switch (arg) { 463 case ATOM_ARG_REG: 464 idx = U16(*ptr); 465 (*ptr) += 2; 466 DEBUG("REG[0x%04X]", idx); 467 idx += gctx->reg_block; 468 switch (gctx->io_mode) { 469 case ATOM_IO_MM: 470 if (idx == 0) 471 gctx->card->reg_write(gctx->card, idx, 472 val << 2); 473 else 474 gctx->card->reg_write(gctx->card, idx, val); 475 break; 476 case ATOM_IO_PCI: 477 pr_info("PCI registers are not implemented\n"); 478 return; 479 case ATOM_IO_SYSIO: 480 pr_info("SYSIO registers are not implemented\n"); 481 return; 482 default: 483 if (!(gctx->io_mode & 0x80)) { 484 pr_info("Bad IO mode\n"); 485 return; 486 } 487 if (!gctx->iio[gctx->io_mode & 0xFF]) { 488 pr_info("Undefined indirect IO write method %d\n", 489 gctx->io_mode & 0x7F); 490 return; 491 } 492 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], 493 idx, val); 494 } 495 break; 496 case ATOM_ARG_PS: 497 idx = U8(*ptr); 498 (*ptr)++; 499 DEBUG("PS[0x%02X]", idx); 500 ctx->ps[idx] = cpu_to_le32(val); 501 break; 502 case ATOM_ARG_WS: 503 idx = U8(*ptr); 504 (*ptr)++; 505 DEBUG("WS[0x%02X]", idx); 506 switch (idx) { 507 case ATOM_WS_QUOTIENT: 508 gctx->divmul[0] = val; 509 break; 510 case ATOM_WS_REMAINDER: 511 gctx->divmul[1] = val; 512 break; 513 case ATOM_WS_DATAPTR: 514 gctx->data_block = val; 515 break; 516 case ATOM_WS_SHIFT: 517 gctx->shift = val; 518 break; 519 case ATOM_WS_OR_MASK: 520 case ATOM_WS_AND_MASK: 521 break; 522 case ATOM_WS_FB_WINDOW: 523 gctx->fb_base = val; 524 break; 525 case ATOM_WS_ATTRIBUTES: 526 gctx->io_attr = val; 527 break; 528 case ATOM_WS_REGPTR: 529 gctx->reg_block = val; 530 break; 531 default: 532 ctx->ws[idx] = val; 533 } 534 break; 535 case ATOM_ARG_FB: 536 idx = U8(*ptr); 537 (*ptr)++; 538 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 539 DRM_ERROR("ATOM: fb write beyond scratch region: %d vs. %d\n", 540 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 541 } else 542 gctx->scratch[(gctx->fb_base / 4) + idx] = val; 543 DEBUG("FB[0x%02X]", idx); 544 break; 545 case ATOM_ARG_PLL: 546 idx = U8(*ptr); 547 (*ptr)++; 548 DEBUG("PLL[0x%02X]", idx); 549 gctx->card->pll_write(gctx->card, idx, val); 550 break; 551 case ATOM_ARG_MC: 552 idx = U8(*ptr); 553 (*ptr)++; 554 DEBUG("MC[0x%02X]", idx); 555 gctx->card->mc_write(gctx->card, idx, val); 556 return; 557 } 558 switch (align) { 559 case ATOM_SRC_DWORD: 560 DEBUG(".[31:0] <- 0x%08X\n", old_val); 561 break; 562 case ATOM_SRC_WORD0: 563 DEBUG(".[15:0] <- 0x%04X\n", old_val); 564 break; 565 case ATOM_SRC_WORD8: 566 DEBUG(".[23:8] <- 0x%04X\n", old_val); 567 break; 568 case ATOM_SRC_WORD16: 569 DEBUG(".[31:16] <- 0x%04X\n", old_val); 570 break; 571 case ATOM_SRC_BYTE0: 572 DEBUG(".[7:0] <- 0x%02X\n", old_val); 573 break; 574 case ATOM_SRC_BYTE8: 575 DEBUG(".[15:8] <- 0x%02X\n", old_val); 576 break; 577 case ATOM_SRC_BYTE16: 578 DEBUG(".[23:16] <- 0x%02X\n", old_val); 579 break; 580 case ATOM_SRC_BYTE24: 581 DEBUG(".[31:24] <- 0x%02X\n", old_val); 582 break; 583 } 584 } 585 586 static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg) 587 { 588 uint8_t attr = U8((*ptr)++); 589 uint32_t dst, src, saved; 590 int dptr = *ptr; 591 SDEBUG(" dst: "); 592 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 593 SDEBUG(" src: "); 594 src = atom_get_src(ctx, attr, ptr); 595 dst += src; 596 SDEBUG(" dst: "); 597 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 598 } 599 600 static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg) 601 { 602 uint8_t attr = U8((*ptr)++); 603 uint32_t dst, src, saved; 604 int dptr = *ptr; 605 SDEBUG(" dst: "); 606 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 607 SDEBUG(" src: "); 608 src = atom_get_src(ctx, attr, ptr); 609 dst &= src; 610 SDEBUG(" dst: "); 611 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 612 } 613 614 static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) 615 { 616 printk("ATOM BIOS beeped!\n"); 617 } 618 619 static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) 620 { 621 int idx = U8((*ptr)++); 622 int r = 0; 623 624 if (idx < ATOM_TABLE_NAMES_CNT) 625 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); 626 else 627 SDEBUG(" table: %d\n", idx); 628 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) 629 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); 630 if (r) { 631 ctx->abort = true; 632 } 633 } 634 635 static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) 636 { 637 uint8_t attr = U8((*ptr)++); 638 uint32_t saved; 639 int dptr = *ptr; 640 attr &= 0x38; 641 attr |= atom_def_dst[attr >> 3] << 6; 642 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 643 SDEBUG(" dst: "); 644 atom_put_dst(ctx, arg, attr, &dptr, 0, saved); 645 } 646 647 static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) 648 { 649 uint8_t attr = U8((*ptr)++); 650 uint32_t dst, src; 651 SDEBUG(" src1: "); 652 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 653 SDEBUG(" src2: "); 654 src = atom_get_src(ctx, attr, ptr); 655 ctx->ctx->cs_equal = (dst == src); 656 ctx->ctx->cs_above = (dst > src); 657 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", 658 ctx->ctx->cs_above ? "GT" : "LE"); 659 } 660 661 static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) 662 { 663 unsigned count = U8((*ptr)++); 664 SDEBUG(" count: %d\n", count); 665 if (arg == ATOM_UNIT_MICROSEC) 666 udelay(count); 667 else if (!drm_can_sleep()) 668 mdelay(count); 669 else 670 msleep(count); 671 } 672 673 static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) 674 { 675 uint8_t attr = U8((*ptr)++); 676 uint32_t dst, src; 677 SDEBUG(" src1: "); 678 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 679 SDEBUG(" src2: "); 680 src = atom_get_src(ctx, attr, ptr); 681 if (src != 0) { 682 ctx->ctx->divmul[0] = dst / src; 683 ctx->ctx->divmul[1] = dst % src; 684 } else { 685 ctx->ctx->divmul[0] = 0; 686 ctx->ctx->divmul[1] = 0; 687 } 688 } 689 690 static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) 691 { 692 /* functionally, a nop */ 693 } 694 695 static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) 696 { 697 int execute = 0, target = U16(*ptr); 698 unsigned long cjiffies; 699 700 (*ptr) += 2; 701 switch (arg) { 702 case ATOM_COND_ABOVE: 703 execute = ctx->ctx->cs_above; 704 break; 705 case ATOM_COND_ABOVEOREQUAL: 706 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; 707 break; 708 case ATOM_COND_ALWAYS: 709 execute = 1; 710 break; 711 case ATOM_COND_BELOW: 712 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); 713 break; 714 case ATOM_COND_BELOWOREQUAL: 715 execute = !ctx->ctx->cs_above; 716 break; 717 case ATOM_COND_EQUAL: 718 execute = ctx->ctx->cs_equal; 719 break; 720 case ATOM_COND_NOTEQUAL: 721 execute = !ctx->ctx->cs_equal; 722 break; 723 } 724 if (arg != ATOM_COND_ALWAYS) 725 SDEBUG(" taken: %s\n", execute ? "yes" : "no"); 726 SDEBUG(" target: 0x%04X\n", target); 727 if (execute) { 728 if (ctx->last_jump == (ctx->start + target)) { 729 cjiffies = jiffies; 730 if (time_after(cjiffies, ctx->last_jump_jiffies)) { 731 cjiffies -= ctx->last_jump_jiffies; 732 if ((jiffies_to_msecs(cjiffies) > 5000)) { 733 DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n"); 734 ctx->abort = true; 735 } 736 } else { 737 /* jiffies wrap around we will just wait a little longer */ 738 ctx->last_jump_jiffies = jiffies; 739 } 740 } else { 741 ctx->last_jump = ctx->start + target; 742 ctx->last_jump_jiffies = jiffies; 743 } 744 *ptr = ctx->start + target; 745 } 746 } 747 748 static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) 749 { 750 uint8_t attr = U8((*ptr)++); 751 uint32_t dst, mask, src, saved; 752 int dptr = *ptr; 753 SDEBUG(" dst: "); 754 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 755 mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); 756 SDEBUG(" mask: 0x%08x", mask); 757 SDEBUG(" src: "); 758 src = atom_get_src(ctx, attr, ptr); 759 dst &= mask; 760 dst |= src; 761 SDEBUG(" dst: "); 762 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 763 } 764 765 static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) 766 { 767 uint8_t attr = U8((*ptr)++); 768 uint32_t src, saved; 769 int dptr = *ptr; 770 if (((attr >> 3) & 7) != ATOM_SRC_DWORD) 771 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 772 else { 773 atom_skip_dst(ctx, arg, attr, ptr); 774 saved = 0xCDCDCDCD; 775 } 776 SDEBUG(" src: "); 777 src = atom_get_src(ctx, attr, ptr); 778 SDEBUG(" dst: "); 779 atom_put_dst(ctx, arg, attr, &dptr, src, saved); 780 } 781 782 static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) 783 { 784 uint8_t attr = U8((*ptr)++); 785 uint32_t dst, src; 786 SDEBUG(" src1: "); 787 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 788 SDEBUG(" src2: "); 789 src = atom_get_src(ctx, attr, ptr); 790 ctx->ctx->divmul[0] = dst * src; 791 } 792 793 static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) 794 { 795 /* nothing */ 796 } 797 798 static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) 799 { 800 uint8_t attr = U8((*ptr)++); 801 uint32_t dst, src, saved; 802 int dptr = *ptr; 803 SDEBUG(" dst: "); 804 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 805 SDEBUG(" src: "); 806 src = atom_get_src(ctx, attr, ptr); 807 dst |= src; 808 SDEBUG(" dst: "); 809 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 810 } 811 812 static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) 813 { 814 uint8_t val = U8((*ptr)++); 815 SDEBUG("POST card output: 0x%02X\n", val); 816 } 817 818 static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) 819 { 820 pr_info("unimplemented!\n"); 821 } 822 823 static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) 824 { 825 pr_info("unimplemented!\n"); 826 } 827 828 static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) 829 { 830 pr_info("unimplemented!\n"); 831 } 832 833 static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) 834 { 835 int idx = U8(*ptr); 836 (*ptr)++; 837 SDEBUG(" block: %d\n", idx); 838 if (!idx) 839 ctx->ctx->data_block = 0; 840 else if (idx == 255) 841 ctx->ctx->data_block = ctx->start; 842 else 843 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); 844 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); 845 } 846 847 static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) 848 { 849 uint8_t attr = U8((*ptr)++); 850 SDEBUG(" fb_base: "); 851 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); 852 } 853 854 static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) 855 { 856 int port; 857 switch (arg) { 858 case ATOM_PORT_ATI: 859 port = U16(*ptr); 860 if (port < ATOM_IO_NAMES_CNT) 861 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); 862 else 863 SDEBUG(" port: %d\n", port); 864 if (!port) 865 ctx->ctx->io_mode = ATOM_IO_MM; 866 else 867 ctx->ctx->io_mode = ATOM_IO_IIO | port; 868 (*ptr) += 2; 869 break; 870 case ATOM_PORT_PCI: 871 ctx->ctx->io_mode = ATOM_IO_PCI; 872 (*ptr)++; 873 break; 874 case ATOM_PORT_SYSIO: 875 ctx->ctx->io_mode = ATOM_IO_SYSIO; 876 (*ptr)++; 877 break; 878 } 879 } 880 881 static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) 882 { 883 ctx->ctx->reg_block = U16(*ptr); 884 (*ptr) += 2; 885 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); 886 } 887 888 static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) 889 { 890 uint8_t attr = U8((*ptr)++), shift; 891 uint32_t saved, dst; 892 int dptr = *ptr; 893 attr &= 0x38; 894 attr |= atom_def_dst[attr >> 3] << 6; 895 SDEBUG(" dst: "); 896 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 897 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 898 SDEBUG(" shift: %d\n", shift); 899 dst <<= shift; 900 SDEBUG(" dst: "); 901 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 902 } 903 904 static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) 905 { 906 uint8_t attr = U8((*ptr)++), shift; 907 uint32_t saved, dst; 908 int dptr = *ptr; 909 attr &= 0x38; 910 attr |= atom_def_dst[attr >> 3] << 6; 911 SDEBUG(" dst: "); 912 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 913 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 914 SDEBUG(" shift: %d\n", shift); 915 dst >>= shift; 916 SDEBUG(" dst: "); 917 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 918 } 919 920 static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg) 921 { 922 uint8_t attr = U8((*ptr)++), shift; 923 uint32_t saved, dst; 924 int dptr = *ptr; 925 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 926 SDEBUG(" dst: "); 927 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 928 /* op needs to full dst value */ 929 dst = saved; 930 shift = atom_get_src(ctx, attr, ptr); 931 SDEBUG(" shift: %d\n", shift); 932 dst <<= shift; 933 dst &= atom_arg_mask[dst_align]; 934 dst >>= atom_arg_shift[dst_align]; 935 SDEBUG(" dst: "); 936 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 937 } 938 939 static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) 940 { 941 uint8_t attr = U8((*ptr)++), shift; 942 uint32_t saved, dst; 943 int dptr = *ptr; 944 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 945 SDEBUG(" dst: "); 946 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 947 /* op needs to full dst value */ 948 dst = saved; 949 shift = atom_get_src(ctx, attr, ptr); 950 SDEBUG(" shift: %d\n", shift); 951 dst >>= shift; 952 dst &= atom_arg_mask[dst_align]; 953 dst >>= atom_arg_shift[dst_align]; 954 SDEBUG(" dst: "); 955 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 956 } 957 958 static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) 959 { 960 uint8_t attr = U8((*ptr)++); 961 uint32_t dst, src, saved; 962 int dptr = *ptr; 963 SDEBUG(" dst: "); 964 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 965 SDEBUG(" src: "); 966 src = atom_get_src(ctx, attr, ptr); 967 dst -= src; 968 SDEBUG(" dst: "); 969 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 970 } 971 972 static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) 973 { 974 uint8_t attr = U8((*ptr)++); 975 uint32_t src, val, target; 976 SDEBUG(" switch: "); 977 src = atom_get_src(ctx, attr, ptr); 978 while (U16(*ptr) != ATOM_CASE_END) 979 if (U8(*ptr) == ATOM_CASE_MAGIC) { 980 (*ptr)++; 981 SDEBUG(" case: "); 982 val = 983 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, 984 ptr); 985 target = U16(*ptr); 986 if (val == src) { 987 SDEBUG(" target: %04X\n", target); 988 *ptr = ctx->start + target; 989 return; 990 } 991 (*ptr) += 2; 992 } else { 993 pr_info("Bad case\n"); 994 return; 995 } 996 (*ptr) += 2; 997 } 998 999 static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) 1000 { 1001 uint8_t attr = U8((*ptr)++); 1002 uint32_t dst, src; 1003 SDEBUG(" src1: "); 1004 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 1005 SDEBUG(" src2: "); 1006 src = atom_get_src(ctx, attr, ptr); 1007 ctx->ctx->cs_equal = ((dst & src) == 0); 1008 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); 1009 } 1010 1011 static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) 1012 { 1013 uint8_t attr = U8((*ptr)++); 1014 uint32_t dst, src, saved; 1015 int dptr = *ptr; 1016 SDEBUG(" dst: "); 1017 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 1018 SDEBUG(" src: "); 1019 src = atom_get_src(ctx, attr, ptr); 1020 dst ^= src; 1021 SDEBUG(" dst: "); 1022 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 1023 } 1024 1025 static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) 1026 { 1027 pr_info("unimplemented!\n"); 1028 } 1029 1030 static struct { 1031 void (*func) (atom_exec_context *, int *, int); 1032 int arg; 1033 } opcode_table[ATOM_OP_CNT] = { 1034 { 1035 NULL, 0}, { 1036 atom_op_move, ATOM_ARG_REG}, { 1037 atom_op_move, ATOM_ARG_PS}, { 1038 atom_op_move, ATOM_ARG_WS}, { 1039 atom_op_move, ATOM_ARG_FB}, { 1040 atom_op_move, ATOM_ARG_PLL}, { 1041 atom_op_move, ATOM_ARG_MC}, { 1042 atom_op_and, ATOM_ARG_REG}, { 1043 atom_op_and, ATOM_ARG_PS}, { 1044 atom_op_and, ATOM_ARG_WS}, { 1045 atom_op_and, ATOM_ARG_FB}, { 1046 atom_op_and, ATOM_ARG_PLL}, { 1047 atom_op_and, ATOM_ARG_MC}, { 1048 atom_op_or, ATOM_ARG_REG}, { 1049 atom_op_or, ATOM_ARG_PS}, { 1050 atom_op_or, ATOM_ARG_WS}, { 1051 atom_op_or, ATOM_ARG_FB}, { 1052 atom_op_or, ATOM_ARG_PLL}, { 1053 atom_op_or, ATOM_ARG_MC}, { 1054 atom_op_shift_left, ATOM_ARG_REG}, { 1055 atom_op_shift_left, ATOM_ARG_PS}, { 1056 atom_op_shift_left, ATOM_ARG_WS}, { 1057 atom_op_shift_left, ATOM_ARG_FB}, { 1058 atom_op_shift_left, ATOM_ARG_PLL}, { 1059 atom_op_shift_left, ATOM_ARG_MC}, { 1060 atom_op_shift_right, ATOM_ARG_REG}, { 1061 atom_op_shift_right, ATOM_ARG_PS}, { 1062 atom_op_shift_right, ATOM_ARG_WS}, { 1063 atom_op_shift_right, ATOM_ARG_FB}, { 1064 atom_op_shift_right, ATOM_ARG_PLL}, { 1065 atom_op_shift_right, ATOM_ARG_MC}, { 1066 atom_op_mul, ATOM_ARG_REG}, { 1067 atom_op_mul, ATOM_ARG_PS}, { 1068 atom_op_mul, ATOM_ARG_WS}, { 1069 atom_op_mul, ATOM_ARG_FB}, { 1070 atom_op_mul, ATOM_ARG_PLL}, { 1071 atom_op_mul, ATOM_ARG_MC}, { 1072 atom_op_div, ATOM_ARG_REG}, { 1073 atom_op_div, ATOM_ARG_PS}, { 1074 atom_op_div, ATOM_ARG_WS}, { 1075 atom_op_div, ATOM_ARG_FB}, { 1076 atom_op_div, ATOM_ARG_PLL}, { 1077 atom_op_div, ATOM_ARG_MC}, { 1078 atom_op_add, ATOM_ARG_REG}, { 1079 atom_op_add, ATOM_ARG_PS}, { 1080 atom_op_add, ATOM_ARG_WS}, { 1081 atom_op_add, ATOM_ARG_FB}, { 1082 atom_op_add, ATOM_ARG_PLL}, { 1083 atom_op_add, ATOM_ARG_MC}, { 1084 atom_op_sub, ATOM_ARG_REG}, { 1085 atom_op_sub, ATOM_ARG_PS}, { 1086 atom_op_sub, ATOM_ARG_WS}, { 1087 atom_op_sub, ATOM_ARG_FB}, { 1088 atom_op_sub, ATOM_ARG_PLL}, { 1089 atom_op_sub, ATOM_ARG_MC}, { 1090 atom_op_setport, ATOM_PORT_ATI}, { 1091 atom_op_setport, ATOM_PORT_PCI}, { 1092 atom_op_setport, ATOM_PORT_SYSIO}, { 1093 atom_op_setregblock, 0}, { 1094 atom_op_setfbbase, 0}, { 1095 atom_op_compare, ATOM_ARG_REG}, { 1096 atom_op_compare, ATOM_ARG_PS}, { 1097 atom_op_compare, ATOM_ARG_WS}, { 1098 atom_op_compare, ATOM_ARG_FB}, { 1099 atom_op_compare, ATOM_ARG_PLL}, { 1100 atom_op_compare, ATOM_ARG_MC}, { 1101 atom_op_switch, 0}, { 1102 atom_op_jump, ATOM_COND_ALWAYS}, { 1103 atom_op_jump, ATOM_COND_EQUAL}, { 1104 atom_op_jump, ATOM_COND_BELOW}, { 1105 atom_op_jump, ATOM_COND_ABOVE}, { 1106 atom_op_jump, ATOM_COND_BELOWOREQUAL}, { 1107 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { 1108 atom_op_jump, ATOM_COND_NOTEQUAL}, { 1109 atom_op_test, ATOM_ARG_REG}, { 1110 atom_op_test, ATOM_ARG_PS}, { 1111 atom_op_test, ATOM_ARG_WS}, { 1112 atom_op_test, ATOM_ARG_FB}, { 1113 atom_op_test, ATOM_ARG_PLL}, { 1114 atom_op_test, ATOM_ARG_MC}, { 1115 atom_op_delay, ATOM_UNIT_MILLISEC}, { 1116 atom_op_delay, ATOM_UNIT_MICROSEC}, { 1117 atom_op_calltable, 0}, { 1118 atom_op_repeat, 0}, { 1119 atom_op_clear, ATOM_ARG_REG}, { 1120 atom_op_clear, ATOM_ARG_PS}, { 1121 atom_op_clear, ATOM_ARG_WS}, { 1122 atom_op_clear, ATOM_ARG_FB}, { 1123 atom_op_clear, ATOM_ARG_PLL}, { 1124 atom_op_clear, ATOM_ARG_MC}, { 1125 atom_op_nop, 0}, { 1126 atom_op_eot, 0}, { 1127 atom_op_mask, ATOM_ARG_REG}, { 1128 atom_op_mask, ATOM_ARG_PS}, { 1129 atom_op_mask, ATOM_ARG_WS}, { 1130 atom_op_mask, ATOM_ARG_FB}, { 1131 atom_op_mask, ATOM_ARG_PLL}, { 1132 atom_op_mask, ATOM_ARG_MC}, { 1133 atom_op_postcard, 0}, { 1134 atom_op_beep, 0}, { 1135 atom_op_savereg, 0}, { 1136 atom_op_restorereg, 0}, { 1137 atom_op_setdatablock, 0}, { 1138 atom_op_xor, ATOM_ARG_REG}, { 1139 atom_op_xor, ATOM_ARG_PS}, { 1140 atom_op_xor, ATOM_ARG_WS}, { 1141 atom_op_xor, ATOM_ARG_FB}, { 1142 atom_op_xor, ATOM_ARG_PLL}, { 1143 atom_op_xor, ATOM_ARG_MC}, { 1144 atom_op_shl, ATOM_ARG_REG}, { 1145 atom_op_shl, ATOM_ARG_PS}, { 1146 atom_op_shl, ATOM_ARG_WS}, { 1147 atom_op_shl, ATOM_ARG_FB}, { 1148 atom_op_shl, ATOM_ARG_PLL}, { 1149 atom_op_shl, ATOM_ARG_MC}, { 1150 atom_op_shr, ATOM_ARG_REG}, { 1151 atom_op_shr, ATOM_ARG_PS}, { 1152 atom_op_shr, ATOM_ARG_WS}, { 1153 atom_op_shr, ATOM_ARG_FB}, { 1154 atom_op_shr, ATOM_ARG_PLL}, { 1155 atom_op_shr, ATOM_ARG_MC}, { 1156 atom_op_debug, 0},}; 1157 1158 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) 1159 { 1160 int base = CU16(ctx->cmd_table + 4 + 2 * index); 1161 int len, ws, ps, ptr; 1162 unsigned char op; 1163 atom_exec_context ectx; 1164 int ret = 0; 1165 1166 if (!base) 1167 return -EINVAL; 1168 1169 len = CU16(base + ATOM_CT_SIZE_PTR); 1170 ws = CU8(base + ATOM_CT_WS_PTR); 1171 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; 1172 ptr = base + ATOM_CT_CODE_PTR; 1173 1174 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); 1175 1176 ectx.ctx = ctx; 1177 ectx.ps_shift = ps / 4; 1178 ectx.start = base; 1179 ectx.ps = params; 1180 ectx.abort = false; 1181 ectx.last_jump = 0; 1182 if (ws) 1183 ectx.ws = kcalloc(4, ws, GFP_KERNEL); 1184 else 1185 ectx.ws = NULL; 1186 1187 debug_depth++; 1188 while (1) { 1189 op = CU8(ptr++); 1190 if (op < ATOM_OP_NAMES_CNT) 1191 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); 1192 else 1193 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); 1194 if (ectx.abort) { 1195 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", 1196 base, len, ws, ps, ptr - 1); 1197 ret = -EINVAL; 1198 goto free; 1199 } 1200 1201 if (op < ATOM_OP_CNT && op > 0) 1202 opcode_table[op].func(&ectx, &ptr, 1203 opcode_table[op].arg); 1204 else 1205 break; 1206 1207 if (op == ATOM_OP_EOT) 1208 break; 1209 } 1210 debug_depth--; 1211 SDEBUG("<<\n"); 1212 1213 free: 1214 kfree(ectx.ws); 1215 return ret; 1216 } 1217 1218 int atom_execute_table_scratch_unlocked(struct atom_context *ctx, int index, uint32_t * params) 1219 { 1220 int r; 1221 1222 mutex_lock(&ctx->mutex); 1223 /* reset data block */ 1224 ctx->data_block = 0; 1225 /* reset reg block */ 1226 ctx->reg_block = 0; 1227 /* reset fb window */ 1228 ctx->fb_base = 0; 1229 /* reset io mode */ 1230 ctx->io_mode = ATOM_IO_MM; 1231 /* reset divmul */ 1232 ctx->divmul[0] = 0; 1233 ctx->divmul[1] = 0; 1234 r = atom_execute_table_locked(ctx, index, params); 1235 mutex_unlock(&ctx->mutex); 1236 return r; 1237 } 1238 1239 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) 1240 { 1241 int r; 1242 mutex_lock(&ctx->scratch_mutex); 1243 r = atom_execute_table_scratch_unlocked(ctx, index, params); 1244 mutex_unlock(&ctx->scratch_mutex); 1245 return r; 1246 } 1247 1248 static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; 1249 1250 static void atom_index_iio(struct atom_context *ctx, int base) 1251 { 1252 ctx->iio = kzalloc(2 * 256, GFP_KERNEL); 1253 if (!ctx->iio) 1254 return; 1255 while (CU8(base) == ATOM_IIO_START) { 1256 ctx->iio[CU8(base + 1)] = base + 2; 1257 base += 2; 1258 while (CU8(base) != ATOM_IIO_END) 1259 base += atom_iio_len[CU8(base)]; 1260 base += 3; 1261 } 1262 } 1263 1264 struct atom_context *atom_parse(struct card_info *card, void *bios) 1265 { 1266 int base; 1267 struct atom_context *ctx = 1268 kzalloc(sizeof(struct atom_context), GFP_KERNEL); 1269 char *str; 1270 char name[512]; 1271 int i; 1272 1273 if (!ctx) 1274 return NULL; 1275 1276 ctx->card = card; 1277 ctx->bios = bios; 1278 1279 if (CU16(0) != ATOM_BIOS_MAGIC) { 1280 pr_info("Invalid BIOS magic\n"); 1281 kfree(ctx); 1282 return NULL; 1283 } 1284 if (strncmp 1285 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, 1286 strlen(ATOM_ATI_MAGIC))) { 1287 pr_info("Invalid ATI magic\n"); 1288 kfree(ctx); 1289 return NULL; 1290 } 1291 1292 base = CU16(ATOM_ROM_TABLE_PTR); 1293 if (strncmp 1294 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, 1295 strlen(ATOM_ROM_MAGIC))) { 1296 pr_info("Invalid ATOM magic\n"); 1297 kfree(ctx); 1298 return NULL; 1299 } 1300 1301 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); 1302 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); 1303 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); 1304 if (!ctx->iio) { 1305 atom_destroy(ctx); 1306 return NULL; 1307 } 1308 1309 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); 1310 while (*str && ((*str == '\n') || (*str == '\r'))) 1311 str++; 1312 /* name string isn't always 0 terminated */ 1313 for (i = 0; i < 511; i++) { 1314 name[i] = str[i]; 1315 if (name[i] < '.' || name[i] > 'z') { 1316 name[i] = 0; 1317 break; 1318 } 1319 } 1320 pr_info("ATOM BIOS: %s\n", name); 1321 1322 return ctx; 1323 } 1324 1325 int atom_asic_init(struct atom_context *ctx) 1326 { 1327 struct radeon_device *rdev = ctx->card->dev->dev_private; 1328 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); 1329 uint32_t ps[16]; 1330 int ret; 1331 1332 memset(ps, 0, 64); 1333 1334 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); 1335 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); 1336 if (!ps[0] || !ps[1]) 1337 return 1; 1338 1339 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) 1340 return 1; 1341 ret = atom_execute_table(ctx, ATOM_CMD_INIT, ps); 1342 if (ret) 1343 return ret; 1344 1345 memset(ps, 0, 64); 1346 1347 if (rdev->family < CHIP_R600) { 1348 if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL)) 1349 atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps); 1350 } 1351 return ret; 1352 } 1353 1354 void atom_destroy(struct atom_context *ctx) 1355 { 1356 kfree(ctx->iio); 1357 kfree(ctx); 1358 } 1359 1360 bool atom_parse_data_header(struct atom_context *ctx, int index, 1361 uint16_t * size, uint8_t * frev, uint8_t * crev, 1362 uint16_t * data_start) 1363 { 1364 int offset = index * 2 + 4; 1365 int idx = CU16(ctx->data_table + offset); 1366 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); 1367 1368 if (!mdt[index]) 1369 return false; 1370 1371 if (size) 1372 *size = CU16(idx); 1373 if (frev) 1374 *frev = CU8(idx + 2); 1375 if (crev) 1376 *crev = CU8(idx + 3); 1377 *data_start = idx; 1378 return true; 1379 } 1380 1381 bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, 1382 uint8_t * crev) 1383 { 1384 int offset = index * 2 + 4; 1385 int idx = CU16(ctx->cmd_table + offset); 1386 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); 1387 1388 if (!mct[index]) 1389 return false; 1390 1391 if (frev) 1392 *frev = CU8(idx + 2); 1393 if (crev) 1394 *crev = CU8(idx + 3); 1395 return true; 1396 } 1397 1398 int atom_allocate_fb_scratch(struct atom_context *ctx) 1399 { 1400 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); 1401 uint16_t data_offset; 1402 int usage_bytes = 0; 1403 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; 1404 1405 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { 1406 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); 1407 1408 DRM_DEBUG("atom firmware requested %08x %dkb\n", 1409 le32_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware), 1410 le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb)); 1411 1412 usage_bytes = le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb) * 1024; 1413 } 1414 ctx->scratch_size_bytes = 0; 1415 if (usage_bytes == 0) 1416 usage_bytes = 20 * 1024; 1417 /* allocate some scratch memory */ 1418 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); 1419 if (!ctx->scratch) 1420 return -ENOMEM; 1421 ctx->scratch_size_bytes = usage_bytes; 1422 return 0; 1423 } 1424