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 #ifdef DEBUG 101 #undef DEBUG 102 #endif 103 104 #define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) 105 #define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) 106 #else 107 #define DEBUG(...) do { } while (0) 108 #define SDEBUG(...) do { } while (0) 109 #endif 110 111 static uint32_t atom_iio_execute(struct atom_context *ctx, int base, 112 uint32_t index, uint32_t data) 113 { 114 struct radeon_device *rdev = ctx->card->dev->dev_private; 115 uint32_t temp = 0xCDCDCDCD; 116 117 while (1) 118 switch (CU8(base)) { 119 case ATOM_IIO_NOP: 120 base++; 121 break; 122 case ATOM_IIO_READ: 123 temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 124 base += 3; 125 break; 126 case ATOM_IIO_WRITE: 127 if (rdev->family == CHIP_RV515) 128 (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 129 ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp); 130 base += 3; 131 break; 132 case ATOM_IIO_CLEAR: 133 temp &= 134 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 135 CU8(base + 2)); 136 base += 3; 137 break; 138 case ATOM_IIO_SET: 139 temp |= 140 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + 141 2); 142 base += 3; 143 break; 144 case ATOM_IIO_MOVE_INDEX: 145 temp &= 146 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 147 CU8(base + 3)); 148 temp |= 149 ((index >> CU8(base + 2)) & 150 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 151 3); 152 base += 4; 153 break; 154 case ATOM_IIO_MOVE_DATA: 155 temp &= 156 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 157 CU8(base + 3)); 158 temp |= 159 ((data >> CU8(base + 2)) & 160 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 161 3); 162 base += 4; 163 break; 164 case ATOM_IIO_MOVE_ATTR: 165 temp &= 166 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 167 CU8(base + 3)); 168 temp |= 169 ((ctx-> 170 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - 171 CU8 172 (base 173 + 174 1)))) 175 << CU8(base + 3); 176 base += 4; 177 break; 178 case ATOM_IIO_END: 179 return temp; 180 default: 181 pr_info("Unknown IIO opcode\n"); 182 return 0; 183 } 184 } 185 186 static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, 187 int *ptr, uint32_t *saved, int print) 188 { 189 uint32_t idx, val = 0xCDCDCDCD, align, arg; 190 struct atom_context *gctx = ctx->ctx; 191 arg = attr & 7; 192 align = (attr >> 3) & 7; 193 switch (arg) { 194 case ATOM_ARG_REG: 195 idx = U16(*ptr); 196 (*ptr) += 2; 197 if (print) 198 DEBUG("REG[0x%04X]", idx); 199 idx += gctx->reg_block; 200 switch (gctx->io_mode) { 201 case ATOM_IO_MM: 202 val = gctx->card->reg_read(gctx->card, idx); 203 break; 204 case ATOM_IO_PCI: 205 pr_info("PCI registers are not implemented\n"); 206 return 0; 207 case ATOM_IO_SYSIO: 208 pr_info("SYSIO registers are not implemented\n"); 209 return 0; 210 default: 211 if (!(gctx->io_mode & 0x80)) { 212 pr_info("Bad IO mode\n"); 213 return 0; 214 } 215 if (!gctx->iio[gctx->io_mode & 0x7F]) { 216 pr_info("Undefined indirect IO read method %d\n", 217 gctx->io_mode & 0x7F); 218 return 0; 219 } 220 val = 221 atom_iio_execute(gctx, 222 gctx->iio[gctx->io_mode & 0x7F], 223 idx, 0); 224 } 225 break; 226 case ATOM_ARG_PS: 227 idx = U8(*ptr); 228 (*ptr)++; 229 /* get_unaligned_le32 avoids unaligned accesses from atombios 230 * tables, noticed on a DEC Alpha. */ 231 val = get_unaligned_le32((u32 *)&ctx->ps[idx]); 232 if (print) 233 DEBUG("PS[0x%02X,0x%04X]", idx, val); 234 break; 235 case ATOM_ARG_WS: 236 idx = U8(*ptr); 237 (*ptr)++; 238 if (print) 239 DEBUG("WS[0x%02X]", idx); 240 switch (idx) { 241 case ATOM_WS_QUOTIENT: 242 val = gctx->divmul[0]; 243 break; 244 case ATOM_WS_REMAINDER: 245 val = gctx->divmul[1]; 246 break; 247 case ATOM_WS_DATAPTR: 248 val = gctx->data_block; 249 break; 250 case ATOM_WS_SHIFT: 251 val = gctx->shift; 252 break; 253 case ATOM_WS_OR_MASK: 254 val = 1 << gctx->shift; 255 break; 256 case ATOM_WS_AND_MASK: 257 val = ~(1 << gctx->shift); 258 break; 259 case ATOM_WS_FB_WINDOW: 260 val = gctx->fb_base; 261 break; 262 case ATOM_WS_ATTRIBUTES: 263 val = gctx->io_attr; 264 break; 265 case ATOM_WS_REGPTR: 266 val = gctx->reg_block; 267 break; 268 default: 269 val = ctx->ws[idx]; 270 } 271 break; 272 case ATOM_ARG_ID: 273 idx = U16(*ptr); 274 (*ptr) += 2; 275 if (print) { 276 if (gctx->data_block) 277 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); 278 else 279 DEBUG("ID[0x%04X]", idx); 280 } 281 val = U32(idx + gctx->data_block); 282 break; 283 case ATOM_ARG_FB: 284 idx = U8(*ptr); 285 (*ptr)++; 286 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 287 DRM_ERROR("ATOM: fb read beyond scratch region: %d vs. %d\n", 288 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 289 val = 0; 290 } else 291 val = gctx->scratch[(gctx->fb_base / 4) + idx]; 292 if (print) 293 DEBUG("FB[0x%02X]", idx); 294 break; 295 case ATOM_ARG_IMM: 296 switch (align) { 297 case ATOM_SRC_DWORD: 298 val = U32(*ptr); 299 (*ptr) += 4; 300 if (print) 301 DEBUG("IMM 0x%08X\n", val); 302 return val; 303 case ATOM_SRC_WORD0: 304 case ATOM_SRC_WORD8: 305 case ATOM_SRC_WORD16: 306 val = U16(*ptr); 307 (*ptr) += 2; 308 if (print) 309 DEBUG("IMM 0x%04X\n", val); 310 return val; 311 case ATOM_SRC_BYTE0: 312 case ATOM_SRC_BYTE8: 313 case ATOM_SRC_BYTE16: 314 case ATOM_SRC_BYTE24: 315 val = U8(*ptr); 316 (*ptr)++; 317 if (print) 318 DEBUG("IMM 0x%02X\n", val); 319 return val; 320 } 321 return 0; 322 case ATOM_ARG_PLL: 323 idx = U8(*ptr); 324 (*ptr)++; 325 if (print) 326 DEBUG("PLL[0x%02X]", idx); 327 val = gctx->card->pll_read(gctx->card, idx); 328 break; 329 case ATOM_ARG_MC: 330 idx = U8(*ptr); 331 (*ptr)++; 332 if (print) 333 DEBUG("MC[0x%02X]", idx); 334 val = gctx->card->mc_read(gctx->card, idx); 335 break; 336 } 337 if (saved) 338 *saved = val; 339 val &= atom_arg_mask[align]; 340 val >>= atom_arg_shift[align]; 341 if (print) 342 switch (align) { 343 case ATOM_SRC_DWORD: 344 DEBUG(".[31:0] -> 0x%08X\n", val); 345 break; 346 case ATOM_SRC_WORD0: 347 DEBUG(".[15:0] -> 0x%04X\n", val); 348 break; 349 case ATOM_SRC_WORD8: 350 DEBUG(".[23:8] -> 0x%04X\n", val); 351 break; 352 case ATOM_SRC_WORD16: 353 DEBUG(".[31:16] -> 0x%04X\n", val); 354 break; 355 case ATOM_SRC_BYTE0: 356 DEBUG(".[7:0] -> 0x%02X\n", val); 357 break; 358 case ATOM_SRC_BYTE8: 359 DEBUG(".[15:8] -> 0x%02X\n", val); 360 break; 361 case ATOM_SRC_BYTE16: 362 DEBUG(".[23:16] -> 0x%02X\n", val); 363 break; 364 case ATOM_SRC_BYTE24: 365 DEBUG(".[31:24] -> 0x%02X\n", val); 366 break; 367 } 368 return val; 369 } 370 371 static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) 372 { 373 uint32_t align = (attr >> 3) & 7, arg = attr & 7; 374 switch (arg) { 375 case ATOM_ARG_REG: 376 case ATOM_ARG_ID: 377 (*ptr) += 2; 378 break; 379 case ATOM_ARG_PLL: 380 case ATOM_ARG_MC: 381 case ATOM_ARG_PS: 382 case ATOM_ARG_WS: 383 case ATOM_ARG_FB: 384 (*ptr)++; 385 break; 386 case ATOM_ARG_IMM: 387 switch (align) { 388 case ATOM_SRC_DWORD: 389 (*ptr) += 4; 390 return; 391 case ATOM_SRC_WORD0: 392 case ATOM_SRC_WORD8: 393 case ATOM_SRC_WORD16: 394 (*ptr) += 2; 395 return; 396 case ATOM_SRC_BYTE0: 397 case ATOM_SRC_BYTE8: 398 case ATOM_SRC_BYTE16: 399 case ATOM_SRC_BYTE24: 400 (*ptr)++; 401 return; 402 } 403 return; 404 } 405 } 406 407 static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) 408 { 409 return atom_get_src_int(ctx, attr, ptr, NULL, 1); 410 } 411 412 static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) 413 { 414 uint32_t val = 0xCDCDCDCD; 415 416 switch (align) { 417 case ATOM_SRC_DWORD: 418 val = U32(*ptr); 419 (*ptr) += 4; 420 break; 421 case ATOM_SRC_WORD0: 422 case ATOM_SRC_WORD8: 423 case ATOM_SRC_WORD16: 424 val = U16(*ptr); 425 (*ptr) += 2; 426 break; 427 case ATOM_SRC_BYTE0: 428 case ATOM_SRC_BYTE8: 429 case ATOM_SRC_BYTE16: 430 case ATOM_SRC_BYTE24: 431 val = U8(*ptr); 432 (*ptr)++; 433 break; 434 } 435 return val; 436 } 437 438 static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, 439 int *ptr, uint32_t *saved, int print) 440 { 441 return atom_get_src_int(ctx, 442 arg | atom_dst_to_src[(attr >> 3) & 443 7][(attr >> 6) & 3] << 3, 444 ptr, saved, print); 445 } 446 447 static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) 448 { 449 atom_skip_src_int(ctx, 450 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 451 3] << 3, ptr); 452 } 453 454 static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, 455 int *ptr, uint32_t val, uint32_t saved) 456 { 457 uint32_t align = 458 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = 459 val, idx; 460 struct atom_context *gctx = ctx->ctx; 461 old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; 462 val <<= atom_arg_shift[align]; 463 val &= atom_arg_mask[align]; 464 saved &= ~atom_arg_mask[align]; 465 val |= saved; 466 switch (arg) { 467 case ATOM_ARG_REG: 468 idx = U16(*ptr); 469 (*ptr) += 2; 470 DEBUG("REG[0x%04X]", idx); 471 idx += gctx->reg_block; 472 switch (gctx->io_mode) { 473 case ATOM_IO_MM: 474 if (idx == 0) 475 gctx->card->reg_write(gctx->card, idx, 476 val << 2); 477 else 478 gctx->card->reg_write(gctx->card, idx, val); 479 break; 480 case ATOM_IO_PCI: 481 pr_info("PCI registers are not implemented\n"); 482 return; 483 case ATOM_IO_SYSIO: 484 pr_info("SYSIO registers are not implemented\n"); 485 return; 486 default: 487 if (!(gctx->io_mode & 0x80)) { 488 pr_info("Bad IO mode\n"); 489 return; 490 } 491 if (!gctx->iio[gctx->io_mode & 0xFF]) { 492 pr_info("Undefined indirect IO write method %d\n", 493 gctx->io_mode & 0x7F); 494 return; 495 } 496 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], 497 idx, val); 498 } 499 break; 500 case ATOM_ARG_PS: 501 idx = U8(*ptr); 502 (*ptr)++; 503 DEBUG("PS[0x%02X]", idx); 504 ctx->ps[idx] = cpu_to_le32(val); 505 break; 506 case ATOM_ARG_WS: 507 idx = U8(*ptr); 508 (*ptr)++; 509 DEBUG("WS[0x%02X]", idx); 510 switch (idx) { 511 case ATOM_WS_QUOTIENT: 512 gctx->divmul[0] = val; 513 break; 514 case ATOM_WS_REMAINDER: 515 gctx->divmul[1] = val; 516 break; 517 case ATOM_WS_DATAPTR: 518 gctx->data_block = val; 519 break; 520 case ATOM_WS_SHIFT: 521 gctx->shift = val; 522 break; 523 case ATOM_WS_OR_MASK: 524 case ATOM_WS_AND_MASK: 525 break; 526 case ATOM_WS_FB_WINDOW: 527 gctx->fb_base = val; 528 break; 529 case ATOM_WS_ATTRIBUTES: 530 gctx->io_attr = val; 531 break; 532 case ATOM_WS_REGPTR: 533 gctx->reg_block = val; 534 break; 535 default: 536 ctx->ws[idx] = val; 537 } 538 break; 539 case ATOM_ARG_FB: 540 idx = U8(*ptr); 541 (*ptr)++; 542 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 543 DRM_ERROR("ATOM: fb write beyond scratch region: %d vs. %d\n", 544 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 545 } else 546 gctx->scratch[(gctx->fb_base / 4) + idx] = val; 547 DEBUG("FB[0x%02X]", idx); 548 break; 549 case ATOM_ARG_PLL: 550 idx = U8(*ptr); 551 (*ptr)++; 552 DEBUG("PLL[0x%02X]", idx); 553 gctx->card->pll_write(gctx->card, idx, val); 554 break; 555 case ATOM_ARG_MC: 556 idx = U8(*ptr); 557 (*ptr)++; 558 DEBUG("MC[0x%02X]", idx); 559 gctx->card->mc_write(gctx->card, idx, val); 560 return; 561 } 562 switch (align) { 563 case ATOM_SRC_DWORD: 564 DEBUG(".[31:0] <- 0x%08X\n", old_val); 565 break; 566 case ATOM_SRC_WORD0: 567 DEBUG(".[15:0] <- 0x%04X\n", old_val); 568 break; 569 case ATOM_SRC_WORD8: 570 DEBUG(".[23:8] <- 0x%04X\n", old_val); 571 break; 572 case ATOM_SRC_WORD16: 573 DEBUG(".[31:16] <- 0x%04X\n", old_val); 574 break; 575 case ATOM_SRC_BYTE0: 576 DEBUG(".[7:0] <- 0x%02X\n", old_val); 577 break; 578 case ATOM_SRC_BYTE8: 579 DEBUG(".[15:8] <- 0x%02X\n", old_val); 580 break; 581 case ATOM_SRC_BYTE16: 582 DEBUG(".[23:16] <- 0x%02X\n", old_val); 583 break; 584 case ATOM_SRC_BYTE24: 585 DEBUG(".[31:24] <- 0x%02X\n", old_val); 586 break; 587 } 588 } 589 590 static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg) 591 { 592 uint8_t attr = U8((*ptr)++); 593 uint32_t dst, src, saved; 594 int dptr = *ptr; 595 SDEBUG(" dst: "); 596 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 597 SDEBUG(" src: "); 598 src = atom_get_src(ctx, attr, ptr); 599 dst += src; 600 SDEBUG(" dst: "); 601 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 602 } 603 604 static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg) 605 { 606 uint8_t attr = U8((*ptr)++); 607 uint32_t dst, src, saved; 608 int dptr = *ptr; 609 SDEBUG(" dst: "); 610 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 611 SDEBUG(" src: "); 612 src = atom_get_src(ctx, attr, ptr); 613 dst &= src; 614 SDEBUG(" dst: "); 615 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 616 } 617 618 static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) 619 { 620 printk("ATOM BIOS beeped!\n"); 621 } 622 623 static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) 624 { 625 int idx = U8((*ptr)++); 626 int r = 0; 627 628 if (idx < ATOM_TABLE_NAMES_CNT) 629 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); 630 else 631 SDEBUG(" table: %d\n", idx); 632 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) 633 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); 634 if (r) { 635 ctx->abort = true; 636 } 637 } 638 639 static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) 640 { 641 uint8_t attr = U8((*ptr)++); 642 uint32_t saved; 643 int dptr = *ptr; 644 attr &= 0x38; 645 attr |= atom_def_dst[attr >> 3] << 6; 646 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 647 SDEBUG(" dst: "); 648 atom_put_dst(ctx, arg, attr, &dptr, 0, saved); 649 } 650 651 static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) 652 { 653 uint8_t attr = U8((*ptr)++); 654 uint32_t dst, src; 655 SDEBUG(" src1: "); 656 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 657 SDEBUG(" src2: "); 658 src = atom_get_src(ctx, attr, ptr); 659 ctx->ctx->cs_equal = (dst == src); 660 ctx->ctx->cs_above = (dst > src); 661 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", 662 ctx->ctx->cs_above ? "GT" : "LE"); 663 } 664 665 static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) 666 { 667 unsigned count = U8((*ptr)++); 668 SDEBUG(" count: %d\n", count); 669 if (arg == ATOM_UNIT_MICROSEC) 670 udelay(count); 671 else if (!drm_can_sleep()) 672 mdelay(count); 673 else 674 drm_msleep(count); 675 } 676 677 static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) 678 { 679 uint8_t attr = U8((*ptr)++); 680 uint32_t dst, src; 681 SDEBUG(" src1: "); 682 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 683 SDEBUG(" src2: "); 684 src = atom_get_src(ctx, attr, ptr); 685 if (src != 0) { 686 ctx->ctx->divmul[0] = dst / src; 687 ctx->ctx->divmul[1] = dst % src; 688 } else { 689 ctx->ctx->divmul[0] = 0; 690 ctx->ctx->divmul[1] = 0; 691 } 692 } 693 694 static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) 695 { 696 /* functionally, a nop */ 697 } 698 699 static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) 700 { 701 int execute = 0, target = U16(*ptr); 702 unsigned long cjiffies; 703 704 (*ptr) += 2; 705 switch (arg) { 706 case ATOM_COND_ABOVE: 707 execute = ctx->ctx->cs_above; 708 break; 709 case ATOM_COND_ABOVEOREQUAL: 710 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; 711 break; 712 case ATOM_COND_ALWAYS: 713 execute = 1; 714 break; 715 case ATOM_COND_BELOW: 716 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); 717 break; 718 case ATOM_COND_BELOWOREQUAL: 719 execute = !ctx->ctx->cs_above; 720 break; 721 case ATOM_COND_EQUAL: 722 execute = ctx->ctx->cs_equal; 723 break; 724 case ATOM_COND_NOTEQUAL: 725 execute = !ctx->ctx->cs_equal; 726 break; 727 } 728 if (arg != ATOM_COND_ALWAYS) 729 SDEBUG(" taken: %s\n", execute ? "yes" : "no"); 730 SDEBUG(" target: 0x%04X\n", target); 731 if (execute) { 732 if (ctx->last_jump == (ctx->start + target)) { 733 cjiffies = jiffies; 734 if (time_after(cjiffies, ctx->last_jump_jiffies)) { 735 cjiffies -= ctx->last_jump_jiffies; 736 if ((jiffies_to_msecs(cjiffies) > 5000)) { 737 DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n"); 738 ctx->abort = true; 739 } 740 } else { 741 /* jiffies wrap around we will just wait a little longer */ 742 ctx->last_jump_jiffies = jiffies; 743 } 744 } else { 745 ctx->last_jump = ctx->start + target; 746 ctx->last_jump_jiffies = jiffies; 747 } 748 *ptr = ctx->start + target; 749 } 750 } 751 752 static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) 753 { 754 uint8_t attr = U8((*ptr)++); 755 uint32_t dst, mask, src, saved; 756 int dptr = *ptr; 757 SDEBUG(" dst: "); 758 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 759 mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); 760 SDEBUG(" mask: 0x%08x", mask); 761 SDEBUG(" src: "); 762 src = atom_get_src(ctx, attr, ptr); 763 dst &= mask; 764 dst |= src; 765 SDEBUG(" dst: "); 766 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 767 } 768 769 static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) 770 { 771 uint8_t attr = U8((*ptr)++); 772 uint32_t src, saved; 773 int dptr = *ptr; 774 if (((attr >> 3) & 7) != ATOM_SRC_DWORD) 775 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 776 else { 777 atom_skip_dst(ctx, arg, attr, ptr); 778 saved = 0xCDCDCDCD; 779 } 780 SDEBUG(" src: "); 781 src = atom_get_src(ctx, attr, ptr); 782 SDEBUG(" dst: "); 783 atom_put_dst(ctx, arg, attr, &dptr, src, saved); 784 } 785 786 static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) 787 { 788 uint8_t attr = U8((*ptr)++); 789 uint32_t dst, src; 790 SDEBUG(" src1: "); 791 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 792 SDEBUG(" src2: "); 793 src = atom_get_src(ctx, attr, ptr); 794 ctx->ctx->divmul[0] = dst * src; 795 } 796 797 static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) 798 { 799 /* nothing */ 800 } 801 802 static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) 803 { 804 uint8_t attr = U8((*ptr)++); 805 uint32_t dst, src, saved; 806 int dptr = *ptr; 807 SDEBUG(" dst: "); 808 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 809 SDEBUG(" src: "); 810 src = atom_get_src(ctx, attr, ptr); 811 dst |= src; 812 SDEBUG(" dst: "); 813 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 814 } 815 816 static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) 817 { 818 uint8_t val = U8((*ptr)++); 819 SDEBUG("POST card output: 0x%02X\n", val); 820 } 821 822 static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) 823 { 824 pr_info("unimplemented!\n"); 825 } 826 827 static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) 828 { 829 pr_info("unimplemented!\n"); 830 } 831 832 static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) 833 { 834 pr_info("unimplemented!\n"); 835 } 836 837 static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) 838 { 839 int idx = U8(*ptr); 840 (*ptr)++; 841 SDEBUG(" block: %d\n", idx); 842 if (!idx) 843 ctx->ctx->data_block = 0; 844 else if (idx == 255) 845 ctx->ctx->data_block = ctx->start; 846 else 847 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); 848 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); 849 } 850 851 static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) 852 { 853 uint8_t attr = U8((*ptr)++); 854 SDEBUG(" fb_base: "); 855 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); 856 } 857 858 static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) 859 { 860 int port; 861 switch (arg) { 862 case ATOM_PORT_ATI: 863 port = U16(*ptr); 864 if (port < ATOM_IO_NAMES_CNT) 865 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); 866 else 867 SDEBUG(" port: %d\n", port); 868 if (!port) 869 ctx->ctx->io_mode = ATOM_IO_MM; 870 else 871 ctx->ctx->io_mode = ATOM_IO_IIO | port; 872 (*ptr) += 2; 873 break; 874 case ATOM_PORT_PCI: 875 ctx->ctx->io_mode = ATOM_IO_PCI; 876 (*ptr)++; 877 break; 878 case ATOM_PORT_SYSIO: 879 ctx->ctx->io_mode = ATOM_IO_SYSIO; 880 (*ptr)++; 881 break; 882 } 883 } 884 885 static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) 886 { 887 ctx->ctx->reg_block = U16(*ptr); 888 (*ptr) += 2; 889 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); 890 } 891 892 static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) 893 { 894 uint8_t attr = U8((*ptr)++), shift; 895 uint32_t saved, dst; 896 int dptr = *ptr; 897 attr &= 0x38; 898 attr |= atom_def_dst[attr >> 3] << 6; 899 SDEBUG(" dst: "); 900 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 901 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 902 SDEBUG(" shift: %d\n", shift); 903 dst <<= shift; 904 SDEBUG(" dst: "); 905 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 906 } 907 908 static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) 909 { 910 uint8_t attr = U8((*ptr)++), shift; 911 uint32_t saved, dst; 912 int dptr = *ptr; 913 attr &= 0x38; 914 attr |= atom_def_dst[attr >> 3] << 6; 915 SDEBUG(" dst: "); 916 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 917 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 918 SDEBUG(" shift: %d\n", shift); 919 dst >>= shift; 920 SDEBUG(" dst: "); 921 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 922 } 923 924 static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg) 925 { 926 uint8_t attr = U8((*ptr)++), shift; 927 uint32_t saved, dst; 928 int dptr = *ptr; 929 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 930 SDEBUG(" dst: "); 931 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 932 /* op needs to full dst value */ 933 dst = saved; 934 shift = atom_get_src(ctx, attr, ptr); 935 SDEBUG(" shift: %d\n", shift); 936 dst <<= shift; 937 dst &= atom_arg_mask[dst_align]; 938 dst >>= atom_arg_shift[dst_align]; 939 SDEBUG(" dst: "); 940 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 941 } 942 943 static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) 944 { 945 uint8_t attr = U8((*ptr)++), shift; 946 uint32_t saved, dst; 947 int dptr = *ptr; 948 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 949 SDEBUG(" dst: "); 950 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 951 /* op needs to full dst value */ 952 dst = saved; 953 shift = atom_get_src(ctx, attr, ptr); 954 SDEBUG(" shift: %d\n", shift); 955 dst >>= shift; 956 dst &= atom_arg_mask[dst_align]; 957 dst >>= atom_arg_shift[dst_align]; 958 SDEBUG(" dst: "); 959 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 960 } 961 962 static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) 963 { 964 uint8_t attr = U8((*ptr)++); 965 uint32_t dst, src, saved; 966 int dptr = *ptr; 967 SDEBUG(" dst: "); 968 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 969 SDEBUG(" src: "); 970 src = atom_get_src(ctx, attr, ptr); 971 dst -= src; 972 SDEBUG(" dst: "); 973 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 974 } 975 976 static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) 977 { 978 uint8_t attr = U8((*ptr)++); 979 uint32_t src, val, target; 980 SDEBUG(" switch: "); 981 src = atom_get_src(ctx, attr, ptr); 982 while (U16(*ptr) != ATOM_CASE_END) 983 if (U8(*ptr) == ATOM_CASE_MAGIC) { 984 (*ptr)++; 985 SDEBUG(" case: "); 986 val = 987 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, 988 ptr); 989 target = U16(*ptr); 990 if (val == src) { 991 SDEBUG(" target: %04X\n", target); 992 *ptr = ctx->start + target; 993 return; 994 } 995 (*ptr) += 2; 996 } else { 997 pr_info("Bad case\n"); 998 return; 999 } 1000 (*ptr) += 2; 1001 } 1002 1003 static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) 1004 { 1005 uint8_t attr = U8((*ptr)++); 1006 uint32_t dst, src; 1007 SDEBUG(" src1: "); 1008 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 1009 SDEBUG(" src2: "); 1010 src = atom_get_src(ctx, attr, ptr); 1011 ctx->ctx->cs_equal = ((dst & src) == 0); 1012 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); 1013 } 1014 1015 static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) 1016 { 1017 uint8_t attr = U8((*ptr)++); 1018 uint32_t dst, src, saved; 1019 int dptr = *ptr; 1020 SDEBUG(" dst: "); 1021 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 1022 SDEBUG(" src: "); 1023 src = atom_get_src(ctx, attr, ptr); 1024 dst ^= src; 1025 SDEBUG(" dst: "); 1026 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 1027 } 1028 1029 static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) 1030 { 1031 pr_info("unimplemented!\n"); 1032 } 1033 1034 static struct { 1035 void (*func) (atom_exec_context *, int *, int); 1036 int arg; 1037 } opcode_table[ATOM_OP_CNT] = { 1038 { 1039 NULL, 0}, { 1040 atom_op_move, ATOM_ARG_REG}, { 1041 atom_op_move, ATOM_ARG_PS}, { 1042 atom_op_move, ATOM_ARG_WS}, { 1043 atom_op_move, ATOM_ARG_FB}, { 1044 atom_op_move, ATOM_ARG_PLL}, { 1045 atom_op_move, ATOM_ARG_MC}, { 1046 atom_op_and, ATOM_ARG_REG}, { 1047 atom_op_and, ATOM_ARG_PS}, { 1048 atom_op_and, ATOM_ARG_WS}, { 1049 atom_op_and, ATOM_ARG_FB}, { 1050 atom_op_and, ATOM_ARG_PLL}, { 1051 atom_op_and, ATOM_ARG_MC}, { 1052 atom_op_or, ATOM_ARG_REG}, { 1053 atom_op_or, ATOM_ARG_PS}, { 1054 atom_op_or, ATOM_ARG_WS}, { 1055 atom_op_or, ATOM_ARG_FB}, { 1056 atom_op_or, ATOM_ARG_PLL}, { 1057 atom_op_or, ATOM_ARG_MC}, { 1058 atom_op_shift_left, ATOM_ARG_REG}, { 1059 atom_op_shift_left, ATOM_ARG_PS}, { 1060 atom_op_shift_left, ATOM_ARG_WS}, { 1061 atom_op_shift_left, ATOM_ARG_FB}, { 1062 atom_op_shift_left, ATOM_ARG_PLL}, { 1063 atom_op_shift_left, ATOM_ARG_MC}, { 1064 atom_op_shift_right, ATOM_ARG_REG}, { 1065 atom_op_shift_right, ATOM_ARG_PS}, { 1066 atom_op_shift_right, ATOM_ARG_WS}, { 1067 atom_op_shift_right, ATOM_ARG_FB}, { 1068 atom_op_shift_right, ATOM_ARG_PLL}, { 1069 atom_op_shift_right, ATOM_ARG_MC}, { 1070 atom_op_mul, ATOM_ARG_REG}, { 1071 atom_op_mul, ATOM_ARG_PS}, { 1072 atom_op_mul, ATOM_ARG_WS}, { 1073 atom_op_mul, ATOM_ARG_FB}, { 1074 atom_op_mul, ATOM_ARG_PLL}, { 1075 atom_op_mul, ATOM_ARG_MC}, { 1076 atom_op_div, ATOM_ARG_REG}, { 1077 atom_op_div, ATOM_ARG_PS}, { 1078 atom_op_div, ATOM_ARG_WS}, { 1079 atom_op_div, ATOM_ARG_FB}, { 1080 atom_op_div, ATOM_ARG_PLL}, { 1081 atom_op_div, ATOM_ARG_MC}, { 1082 atom_op_add, ATOM_ARG_REG}, { 1083 atom_op_add, ATOM_ARG_PS}, { 1084 atom_op_add, ATOM_ARG_WS}, { 1085 atom_op_add, ATOM_ARG_FB}, { 1086 atom_op_add, ATOM_ARG_PLL}, { 1087 atom_op_add, ATOM_ARG_MC}, { 1088 atom_op_sub, ATOM_ARG_REG}, { 1089 atom_op_sub, ATOM_ARG_PS}, { 1090 atom_op_sub, ATOM_ARG_WS}, { 1091 atom_op_sub, ATOM_ARG_FB}, { 1092 atom_op_sub, ATOM_ARG_PLL}, { 1093 atom_op_sub, ATOM_ARG_MC}, { 1094 atom_op_setport, ATOM_PORT_ATI}, { 1095 atom_op_setport, ATOM_PORT_PCI}, { 1096 atom_op_setport, ATOM_PORT_SYSIO}, { 1097 atom_op_setregblock, 0}, { 1098 atom_op_setfbbase, 0}, { 1099 atom_op_compare, ATOM_ARG_REG}, { 1100 atom_op_compare, ATOM_ARG_PS}, { 1101 atom_op_compare, ATOM_ARG_WS}, { 1102 atom_op_compare, ATOM_ARG_FB}, { 1103 atom_op_compare, ATOM_ARG_PLL}, { 1104 atom_op_compare, ATOM_ARG_MC}, { 1105 atom_op_switch, 0}, { 1106 atom_op_jump, ATOM_COND_ALWAYS}, { 1107 atom_op_jump, ATOM_COND_EQUAL}, { 1108 atom_op_jump, ATOM_COND_BELOW}, { 1109 atom_op_jump, ATOM_COND_ABOVE}, { 1110 atom_op_jump, ATOM_COND_BELOWOREQUAL}, { 1111 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { 1112 atom_op_jump, ATOM_COND_NOTEQUAL}, { 1113 atom_op_test, ATOM_ARG_REG}, { 1114 atom_op_test, ATOM_ARG_PS}, { 1115 atom_op_test, ATOM_ARG_WS}, { 1116 atom_op_test, ATOM_ARG_FB}, { 1117 atom_op_test, ATOM_ARG_PLL}, { 1118 atom_op_test, ATOM_ARG_MC}, { 1119 atom_op_delay, ATOM_UNIT_MILLISEC}, { 1120 atom_op_delay, ATOM_UNIT_MICROSEC}, { 1121 atom_op_calltable, 0}, { 1122 atom_op_repeat, 0}, { 1123 atom_op_clear, ATOM_ARG_REG}, { 1124 atom_op_clear, ATOM_ARG_PS}, { 1125 atom_op_clear, ATOM_ARG_WS}, { 1126 atom_op_clear, ATOM_ARG_FB}, { 1127 atom_op_clear, ATOM_ARG_PLL}, { 1128 atom_op_clear, ATOM_ARG_MC}, { 1129 atom_op_nop, 0}, { 1130 atom_op_eot, 0}, { 1131 atom_op_mask, ATOM_ARG_REG}, { 1132 atom_op_mask, ATOM_ARG_PS}, { 1133 atom_op_mask, ATOM_ARG_WS}, { 1134 atom_op_mask, ATOM_ARG_FB}, { 1135 atom_op_mask, ATOM_ARG_PLL}, { 1136 atom_op_mask, ATOM_ARG_MC}, { 1137 atom_op_postcard, 0}, { 1138 atom_op_beep, 0}, { 1139 atom_op_savereg, 0}, { 1140 atom_op_restorereg, 0}, { 1141 atom_op_setdatablock, 0}, { 1142 atom_op_xor, ATOM_ARG_REG}, { 1143 atom_op_xor, ATOM_ARG_PS}, { 1144 atom_op_xor, ATOM_ARG_WS}, { 1145 atom_op_xor, ATOM_ARG_FB}, { 1146 atom_op_xor, ATOM_ARG_PLL}, { 1147 atom_op_xor, ATOM_ARG_MC}, { 1148 atom_op_shl, ATOM_ARG_REG}, { 1149 atom_op_shl, ATOM_ARG_PS}, { 1150 atom_op_shl, ATOM_ARG_WS}, { 1151 atom_op_shl, ATOM_ARG_FB}, { 1152 atom_op_shl, ATOM_ARG_PLL}, { 1153 atom_op_shl, ATOM_ARG_MC}, { 1154 atom_op_shr, ATOM_ARG_REG}, { 1155 atom_op_shr, ATOM_ARG_PS}, { 1156 atom_op_shr, ATOM_ARG_WS}, { 1157 atom_op_shr, ATOM_ARG_FB}, { 1158 atom_op_shr, ATOM_ARG_PLL}, { 1159 atom_op_shr, ATOM_ARG_MC}, { 1160 atom_op_debug, 0},}; 1161 1162 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) 1163 { 1164 int base = CU16(ctx->cmd_table + 4 + 2 * index); 1165 int len, ws, ps, ptr; 1166 unsigned char op; 1167 atom_exec_context ectx; 1168 int ret = 0; 1169 1170 if (!base) 1171 return -EINVAL; 1172 1173 len = CU16(base + ATOM_CT_SIZE_PTR); 1174 ws = CU8(base + ATOM_CT_WS_PTR); 1175 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; 1176 ptr = base + ATOM_CT_CODE_PTR; 1177 1178 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); 1179 1180 ectx.ctx = ctx; 1181 ectx.ps_shift = ps / 4; 1182 ectx.start = base; 1183 ectx.ps = params; 1184 ectx.abort = false; 1185 ectx.last_jump = 0; 1186 if (ws) 1187 ectx.ws = kcalloc(4, ws, GFP_KERNEL); 1188 else 1189 ectx.ws = NULL; 1190 1191 debug_depth++; 1192 while (1) { 1193 op = CU8(ptr++); 1194 if (op < ATOM_OP_NAMES_CNT) 1195 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); 1196 else 1197 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); 1198 if (ectx.abort) { 1199 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", 1200 base, len, ws, ps, ptr - 1); 1201 ret = -EINVAL; 1202 goto free; 1203 } 1204 1205 if (op < ATOM_OP_CNT && op > 0) 1206 opcode_table[op].func(&ectx, &ptr, 1207 opcode_table[op].arg); 1208 else 1209 break; 1210 1211 if (op == ATOM_OP_EOT) 1212 break; 1213 } 1214 debug_depth--; 1215 SDEBUG("<<\n"); 1216 1217 free: 1218 kfree(ectx.ws); 1219 return ret; 1220 } 1221 1222 int atom_execute_table_scratch_unlocked(struct atom_context *ctx, int index, uint32_t * params) 1223 { 1224 int r; 1225 1226 mutex_lock(&ctx->mutex); 1227 /* reset data block */ 1228 ctx->data_block = 0; 1229 /* reset reg block */ 1230 ctx->reg_block = 0; 1231 /* reset fb window */ 1232 ctx->fb_base = 0; 1233 /* reset io mode */ 1234 ctx->io_mode = ATOM_IO_MM; 1235 /* reset divmul */ 1236 ctx->divmul[0] = 0; 1237 ctx->divmul[1] = 0; 1238 r = atom_execute_table_locked(ctx, index, params); 1239 mutex_unlock(&ctx->mutex); 1240 return r; 1241 } 1242 1243 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) 1244 { 1245 int r; 1246 mutex_lock(&ctx->scratch_mutex); 1247 r = atom_execute_table_scratch_unlocked(ctx, index, params); 1248 mutex_unlock(&ctx->scratch_mutex); 1249 return r; 1250 } 1251 1252 static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; 1253 1254 static void atom_index_iio(struct atom_context *ctx, int base) 1255 { 1256 ctx->iio = kzalloc(2 * 256, GFP_KERNEL); 1257 if (!ctx->iio) 1258 return; 1259 while (CU8(base) == ATOM_IIO_START) { 1260 ctx->iio[CU8(base + 1)] = base + 2; 1261 base += 2; 1262 while (CU8(base) != ATOM_IIO_END) 1263 base += atom_iio_len[CU8(base)]; 1264 base += 3; 1265 } 1266 } 1267 1268 struct atom_context *atom_parse(struct card_info *card, void *bios) 1269 { 1270 int base; 1271 struct atom_context *ctx = 1272 kzalloc(sizeof(struct atom_context), GFP_KERNEL); 1273 char *str; 1274 char name[512]; 1275 int i; 1276 1277 if (!ctx) 1278 return NULL; 1279 1280 ctx->card = card; 1281 ctx->bios = bios; 1282 1283 if (CU16(0) != ATOM_BIOS_MAGIC) { 1284 pr_info("Invalid BIOS magic\n"); 1285 kfree(ctx); 1286 return NULL; 1287 } 1288 if (strncmp 1289 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, 1290 strlen(ATOM_ATI_MAGIC))) { 1291 pr_info("Invalid ATI magic\n"); 1292 kfree(ctx); 1293 return NULL; 1294 } 1295 1296 base = CU16(ATOM_ROM_TABLE_PTR); 1297 if (strncmp 1298 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, 1299 strlen(ATOM_ROM_MAGIC))) { 1300 pr_info("Invalid ATOM magic\n"); 1301 kfree(ctx); 1302 return NULL; 1303 } 1304 1305 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); 1306 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); 1307 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); 1308 if (!ctx->iio) { 1309 atom_destroy(ctx); 1310 return NULL; 1311 } 1312 1313 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); 1314 while (*str && ((*str == '\n') || (*str == '\r'))) 1315 str++; 1316 /* name string isn't always 0 terminated */ 1317 for (i = 0; i < 511; i++) { 1318 name[i] = str[i]; 1319 if (name[i] < '.' || name[i] > 'z') { 1320 name[i] = 0; 1321 break; 1322 } 1323 } 1324 pr_info("ATOM BIOS: %s\n", name); 1325 1326 return ctx; 1327 } 1328 1329 int atom_asic_init(struct atom_context *ctx) 1330 { 1331 struct radeon_device *rdev = ctx->card->dev->dev_private; 1332 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); 1333 uint32_t ps[16]; 1334 int ret; 1335 1336 memset(ps, 0, 64); 1337 1338 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); 1339 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); 1340 if (!ps[0] || !ps[1]) 1341 return 1; 1342 1343 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) 1344 return 1; 1345 ret = atom_execute_table(ctx, ATOM_CMD_INIT, ps); 1346 if (ret) 1347 return ret; 1348 1349 memset(ps, 0, 64); 1350 1351 if (rdev->family < CHIP_R600) { 1352 if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL)) 1353 atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps); 1354 } 1355 return ret; 1356 } 1357 1358 void atom_destroy(struct atom_context *ctx) 1359 { 1360 kfree(ctx->iio); 1361 kfree(ctx); 1362 } 1363 1364 bool atom_parse_data_header(struct atom_context *ctx, int index, 1365 uint16_t * size, uint8_t * frev, uint8_t * crev, 1366 uint16_t * data_start) 1367 { 1368 int offset = index * 2 + 4; 1369 int idx = CU16(ctx->data_table + offset); 1370 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); 1371 1372 if (!mdt[index]) 1373 return false; 1374 1375 if (size) 1376 *size = CU16(idx); 1377 if (frev) 1378 *frev = CU8(idx + 2); 1379 if (crev) 1380 *crev = CU8(idx + 3); 1381 *data_start = idx; 1382 return true; 1383 } 1384 1385 bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, 1386 uint8_t * crev) 1387 { 1388 int offset = index * 2 + 4; 1389 int idx = CU16(ctx->cmd_table + offset); 1390 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); 1391 1392 if (!mct[index]) 1393 return false; 1394 1395 if (frev) 1396 *frev = CU8(idx + 2); 1397 if (crev) 1398 *crev = CU8(idx + 3); 1399 return true; 1400 } 1401 1402 int atom_allocate_fb_scratch(struct atom_context *ctx) 1403 { 1404 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); 1405 uint16_t data_offset; 1406 int usage_bytes = 0; 1407 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; 1408 1409 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { 1410 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); 1411 1412 DRM_DEBUG("atom firmware requested %08x %dkb\n", 1413 le32_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware), 1414 le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb)); 1415 1416 usage_bytes = le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb) * 1024; 1417 } 1418 ctx->scratch_size_bytes = 0; 1419 if (usage_bytes == 0) 1420 usage_bytes = 20 * 1024; 1421 /* allocate some scratch memory */ 1422 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); 1423 if (!ctx->scratch) 1424 return -ENOMEM; 1425 ctx->scratch_size_bytes = usage_bytes; 1426 return 0; 1427 } 1428