1 /* $NetBSD: radeon_atom.c,v 1.2 2021/12/18 23:45:43 riastradh Exp $ */ 2 3 /* 4 * Copyright 2008 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Author: Stanislaw Skowronek 25 */ 26 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: radeon_atom.c,v 1.2 2021/12/18 23:45:43 riastradh Exp $"); 29 30 #include <linux/module.h> 31 #include <linux/sched.h> 32 #include <linux/slab.h> 33 34 #include <asm/unaligned.h> 35 36 #include <drm/drm_device.h> 37 #include <drm/drm_util.h> 38 39 #define ATOM_DEBUG 40 41 #include "atom.h" 42 #include "atom-names.h" 43 #include "atom-bits.h" 44 #include "radeon.h" 45 46 #define ATOM_COND_ABOVE 0 47 #define ATOM_COND_ABOVEOREQUAL 1 48 #define ATOM_COND_ALWAYS 2 49 #define ATOM_COND_BELOW 3 50 #define ATOM_COND_BELOWOREQUAL 4 51 #define ATOM_COND_EQUAL 5 52 #define ATOM_COND_NOTEQUAL 6 53 54 #define ATOM_PORT_ATI 0 55 #define ATOM_PORT_PCI 1 56 #define ATOM_PORT_SYSIO 2 57 58 #define ATOM_UNIT_MICROSEC 0 59 #define ATOM_UNIT_MILLISEC 1 60 61 #define PLL_INDEX 2 62 #define PLL_DATA 3 63 64 typedef struct { 65 struct atom_context *ctx; 66 uint32_t *ps, *ws; 67 int ps_shift; 68 uint16_t start; 69 unsigned last_jump; 70 unsigned long last_jump_jiffies; 71 bool abort; 72 } atom_exec_context; 73 74 int atom_debug = 0; 75 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); 76 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); 77 78 static uint32_t atom_arg_mask[8] = { 79 0xFFFFFFFF, 0x0000FFFF, 0x00FFFF00, 0xFFFF0000, 80 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 81 }; 82 static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 }; 83 84 static int atom_dst_to_src[8][4] = { 85 /* translate destination alignment field to the source alignment encoding */ 86 {0, 0, 0, 0}, 87 {1, 2, 3, 0}, 88 {1, 2, 3, 0}, 89 {1, 2, 3, 0}, 90 {4, 5, 6, 7}, 91 {4, 5, 6, 7}, 92 {4, 5, 6, 7}, 93 {4, 5, 6, 7}, 94 }; 95 static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 }; 96 97 static int debug_depth = 0; 98 #ifdef ATOM_DEBUG 99 static void debug_print_spaces(int n) 100 { 101 while (n--) 102 printk(" "); 103 } 104 105 #ifdef __NetBSD__ /* XXX */ 106 /* 107 * Kludge: NetBSD defines DEBUG to mean debugging is enabled. Since 108 * we're not going to include any more header files, it's OK for it to 109 * be defined unconditionally after this. 110 */ 111 #undef DEBUG 112 #endif 113 114 #define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0) 115 #define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0) 116 #else 117 #define DEBUG(...) do { } while (0) 118 #define SDEBUG(...) do { } while (0) 119 #endif 120 121 static uint32_t atom_iio_execute(struct atom_context *ctx, int base, 122 uint32_t index, uint32_t data) 123 { 124 struct radeon_device *rdev = ctx->card->dev->dev_private; 125 uint32_t temp = 0xCDCDCDCD; 126 127 while (1) 128 switch (CU8(base)) { 129 case ATOM_IIO_NOP: 130 base++; 131 break; 132 case ATOM_IIO_READ: 133 temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 134 base += 3; 135 break; 136 case ATOM_IIO_WRITE: 137 if (rdev->family == CHIP_RV515) 138 (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1)); 139 ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp); 140 base += 3; 141 break; 142 case ATOM_IIO_CLEAR: 143 temp &= 144 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 145 CU8(base + 2)); 146 base += 3; 147 break; 148 case ATOM_IIO_SET: 149 temp |= 150 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base + 151 2); 152 base += 3; 153 break; 154 case ATOM_IIO_MOVE_INDEX: 155 temp &= 156 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 157 CU8(base + 3)); 158 temp |= 159 ((index >> CU8(base + 2)) & 160 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 161 3); 162 base += 4; 163 break; 164 case ATOM_IIO_MOVE_DATA: 165 temp &= 166 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 167 CU8(base + 3)); 168 temp |= 169 ((data >> CU8(base + 2)) & 170 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base + 171 3); 172 base += 4; 173 break; 174 case ATOM_IIO_MOVE_ATTR: 175 temp &= 176 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) << 177 CU8(base + 3)); 178 temp |= 179 ((ctx-> 180 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 - 181 CU8 182 (base 183 + 184 1)))) 185 << CU8(base + 3); 186 base += 4; 187 break; 188 case ATOM_IIO_END: 189 return temp; 190 default: 191 pr_info("Unknown IIO opcode\n"); 192 return 0; 193 } 194 } 195 196 static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr, 197 int *ptr, uint32_t *saved, int print) 198 { 199 uint32_t idx, val = 0xCDCDCDCD, align, arg; 200 struct atom_context *gctx = ctx->ctx; 201 arg = attr & 7; 202 align = (attr >> 3) & 7; 203 switch (arg) { 204 case ATOM_ARG_REG: 205 idx = U16(*ptr); 206 (*ptr) += 2; 207 if (print) 208 DEBUG("REG[0x%04X]", idx); 209 idx += gctx->reg_block; 210 switch (gctx->io_mode) { 211 case ATOM_IO_MM: 212 val = gctx->card->reg_read(gctx->card, idx); 213 break; 214 case ATOM_IO_PCI: 215 pr_info("PCI registers are not implemented\n"); 216 return 0; 217 case ATOM_IO_SYSIO: 218 pr_info("SYSIO registers are not implemented\n"); 219 return 0; 220 default: 221 if (!(gctx->io_mode & 0x80)) { 222 pr_info("Bad IO mode\n"); 223 return 0; 224 } 225 if (!gctx->iio[gctx->io_mode & 0x7F]) { 226 pr_info("Undefined indirect IO read method %d\n", 227 gctx->io_mode & 0x7F); 228 return 0; 229 } 230 val = 231 atom_iio_execute(gctx, 232 gctx->iio[gctx->io_mode & 0x7F], 233 idx, 0); 234 } 235 break; 236 case ATOM_ARG_PS: 237 idx = U8(*ptr); 238 (*ptr)++; 239 /* get_unaligned_le32 avoids unaligned accesses from atombios 240 * tables, noticed on a DEC Alpha. */ 241 val = get_unaligned_le32((u32 *)&ctx->ps[idx]); 242 if (print) 243 DEBUG("PS[0x%02X,0x%04X]", idx, val); 244 break; 245 case ATOM_ARG_WS: 246 idx = U8(*ptr); 247 (*ptr)++; 248 if (print) 249 DEBUG("WS[0x%02X]", idx); 250 switch (idx) { 251 case ATOM_WS_QUOTIENT: 252 val = gctx->divmul[0]; 253 break; 254 case ATOM_WS_REMAINDER: 255 val = gctx->divmul[1]; 256 break; 257 case ATOM_WS_DATAPTR: 258 val = gctx->data_block; 259 break; 260 case ATOM_WS_SHIFT: 261 val = gctx->shift; 262 break; 263 case ATOM_WS_OR_MASK: 264 val = 1 << gctx->shift; 265 break; 266 case ATOM_WS_AND_MASK: 267 val = ~(1 << gctx->shift); 268 break; 269 case ATOM_WS_FB_WINDOW: 270 val = gctx->fb_base; 271 break; 272 case ATOM_WS_ATTRIBUTES: 273 val = gctx->io_attr; 274 break; 275 case ATOM_WS_REGPTR: 276 val = gctx->reg_block; 277 break; 278 default: 279 val = ctx->ws[idx]; 280 } 281 break; 282 case ATOM_ARG_ID: 283 idx = U16(*ptr); 284 (*ptr) += 2; 285 if (print) { 286 if (gctx->data_block) 287 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block); 288 else 289 DEBUG("ID[0x%04X]", idx); 290 } 291 val = U32(idx + gctx->data_block); 292 break; 293 case ATOM_ARG_FB: 294 idx = U8(*ptr); 295 (*ptr)++; 296 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 297 DRM_ERROR("ATOM: fb read beyond scratch region: %d vs. %d\n", 298 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 299 val = 0; 300 } else 301 val = gctx->scratch[(gctx->fb_base / 4) + idx]; 302 if (print) 303 DEBUG("FB[0x%02X]", idx); 304 break; 305 case ATOM_ARG_IMM: 306 switch (align) { 307 case ATOM_SRC_DWORD: 308 val = U32(*ptr); 309 (*ptr) += 4; 310 if (print) 311 DEBUG("IMM 0x%08X\n", val); 312 return val; 313 case ATOM_SRC_WORD0: 314 case ATOM_SRC_WORD8: 315 case ATOM_SRC_WORD16: 316 val = U16(*ptr); 317 (*ptr) += 2; 318 if (print) 319 DEBUG("IMM 0x%04X\n", val); 320 return val; 321 case ATOM_SRC_BYTE0: 322 case ATOM_SRC_BYTE8: 323 case ATOM_SRC_BYTE16: 324 case ATOM_SRC_BYTE24: 325 val = U8(*ptr); 326 (*ptr)++; 327 if (print) 328 DEBUG("IMM 0x%02X\n", val); 329 return val; 330 } 331 return 0; 332 case ATOM_ARG_PLL: 333 idx = U8(*ptr); 334 (*ptr)++; 335 if (print) 336 DEBUG("PLL[0x%02X]", idx); 337 val = gctx->card->pll_read(gctx->card, idx); 338 break; 339 case ATOM_ARG_MC: 340 idx = U8(*ptr); 341 (*ptr)++; 342 if (print) 343 DEBUG("MC[0x%02X]", idx); 344 val = gctx->card->mc_read(gctx->card, idx); 345 break; 346 } 347 if (saved) 348 *saved = val; 349 val &= atom_arg_mask[align]; 350 val >>= atom_arg_shift[align]; 351 if (print) 352 switch (align) { 353 case ATOM_SRC_DWORD: 354 DEBUG(".[31:0] -> 0x%08X\n", val); 355 break; 356 case ATOM_SRC_WORD0: 357 DEBUG(".[15:0] -> 0x%04X\n", val); 358 break; 359 case ATOM_SRC_WORD8: 360 DEBUG(".[23:8] -> 0x%04X\n", val); 361 break; 362 case ATOM_SRC_WORD16: 363 DEBUG(".[31:16] -> 0x%04X\n", val); 364 break; 365 case ATOM_SRC_BYTE0: 366 DEBUG(".[7:0] -> 0x%02X\n", val); 367 break; 368 case ATOM_SRC_BYTE8: 369 DEBUG(".[15:8] -> 0x%02X\n", val); 370 break; 371 case ATOM_SRC_BYTE16: 372 DEBUG(".[23:16] -> 0x%02X\n", val); 373 break; 374 case ATOM_SRC_BYTE24: 375 DEBUG(".[31:24] -> 0x%02X\n", val); 376 break; 377 } 378 return val; 379 } 380 381 static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr) 382 { 383 uint32_t align = (attr >> 3) & 7, arg = attr & 7; 384 switch (arg) { 385 case ATOM_ARG_REG: 386 case ATOM_ARG_ID: 387 (*ptr) += 2; 388 break; 389 case ATOM_ARG_PLL: 390 case ATOM_ARG_MC: 391 case ATOM_ARG_PS: 392 case ATOM_ARG_WS: 393 case ATOM_ARG_FB: 394 (*ptr)++; 395 break; 396 case ATOM_ARG_IMM: 397 switch (align) { 398 case ATOM_SRC_DWORD: 399 (*ptr) += 4; 400 return; 401 case ATOM_SRC_WORD0: 402 case ATOM_SRC_WORD8: 403 case ATOM_SRC_WORD16: 404 (*ptr) += 2; 405 return; 406 case ATOM_SRC_BYTE0: 407 case ATOM_SRC_BYTE8: 408 case ATOM_SRC_BYTE16: 409 case ATOM_SRC_BYTE24: 410 (*ptr)++; 411 return; 412 } 413 return; 414 } 415 } 416 417 static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr) 418 { 419 return atom_get_src_int(ctx, attr, ptr, NULL, 1); 420 } 421 422 static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr) 423 { 424 uint32_t val = 0xCDCDCDCD; 425 426 switch (align) { 427 case ATOM_SRC_DWORD: 428 val = U32(*ptr); 429 (*ptr) += 4; 430 break; 431 case ATOM_SRC_WORD0: 432 case ATOM_SRC_WORD8: 433 case ATOM_SRC_WORD16: 434 val = U16(*ptr); 435 (*ptr) += 2; 436 break; 437 case ATOM_SRC_BYTE0: 438 case ATOM_SRC_BYTE8: 439 case ATOM_SRC_BYTE16: 440 case ATOM_SRC_BYTE24: 441 val = U8(*ptr); 442 (*ptr)++; 443 break; 444 } 445 return val; 446 } 447 448 static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr, 449 int *ptr, uint32_t *saved, int print) 450 { 451 return atom_get_src_int(ctx, 452 arg | atom_dst_to_src[(attr >> 3) & 453 7][(attr >> 6) & 3] << 3, 454 ptr, saved, print); 455 } 456 457 static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr) 458 { 459 atom_skip_src_int(ctx, 460 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 461 3] << 3, ptr); 462 } 463 464 static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr, 465 int *ptr, uint32_t val, uint32_t saved) 466 { 467 uint32_t align = 468 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val = 469 val, idx; 470 struct atom_context *gctx = ctx->ctx; 471 old_val &= atom_arg_mask[align] >> atom_arg_shift[align]; 472 val <<= atom_arg_shift[align]; 473 val &= atom_arg_mask[align]; 474 saved &= ~atom_arg_mask[align]; 475 val |= saved; 476 switch (arg) { 477 case ATOM_ARG_REG: 478 idx = U16(*ptr); 479 (*ptr) += 2; 480 DEBUG("REG[0x%04X]", idx); 481 idx += gctx->reg_block; 482 switch (gctx->io_mode) { 483 case ATOM_IO_MM: 484 if (idx == 0) 485 gctx->card->reg_write(gctx->card, idx, 486 val << 2); 487 else 488 gctx->card->reg_write(gctx->card, idx, val); 489 break; 490 case ATOM_IO_PCI: 491 pr_info("PCI registers are not implemented\n"); 492 return; 493 case ATOM_IO_SYSIO: 494 pr_info("SYSIO registers are not implemented\n"); 495 return; 496 default: 497 if (!(gctx->io_mode & 0x80)) { 498 pr_info("Bad IO mode\n"); 499 return; 500 } 501 if (!gctx->iio[gctx->io_mode & 0xFF]) { 502 pr_info("Undefined indirect IO write method %d\n", 503 gctx->io_mode & 0x7F); 504 return; 505 } 506 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF], 507 idx, val); 508 } 509 break; 510 case ATOM_ARG_PS: 511 idx = U8(*ptr); 512 (*ptr)++; 513 DEBUG("PS[0x%02X]", idx); 514 ctx->ps[idx] = cpu_to_le32(val); 515 break; 516 case ATOM_ARG_WS: 517 idx = U8(*ptr); 518 (*ptr)++; 519 DEBUG("WS[0x%02X]", idx); 520 switch (idx) { 521 case ATOM_WS_QUOTIENT: 522 gctx->divmul[0] = val; 523 break; 524 case ATOM_WS_REMAINDER: 525 gctx->divmul[1] = val; 526 break; 527 case ATOM_WS_DATAPTR: 528 gctx->data_block = val; 529 break; 530 case ATOM_WS_SHIFT: 531 gctx->shift = val; 532 break; 533 case ATOM_WS_OR_MASK: 534 case ATOM_WS_AND_MASK: 535 break; 536 case ATOM_WS_FB_WINDOW: 537 gctx->fb_base = val; 538 break; 539 case ATOM_WS_ATTRIBUTES: 540 gctx->io_attr = val; 541 break; 542 case ATOM_WS_REGPTR: 543 gctx->reg_block = val; 544 break; 545 default: 546 ctx->ws[idx] = val; 547 } 548 break; 549 case ATOM_ARG_FB: 550 idx = U8(*ptr); 551 (*ptr)++; 552 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) { 553 DRM_ERROR("ATOM: fb write beyond scratch region: %d vs. %d\n", 554 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes); 555 } else 556 gctx->scratch[(gctx->fb_base / 4) + idx] = val; 557 DEBUG("FB[0x%02X]", idx); 558 break; 559 case ATOM_ARG_PLL: 560 idx = U8(*ptr); 561 (*ptr)++; 562 DEBUG("PLL[0x%02X]", idx); 563 gctx->card->pll_write(gctx->card, idx, val); 564 break; 565 case ATOM_ARG_MC: 566 idx = U8(*ptr); 567 (*ptr)++; 568 DEBUG("MC[0x%02X]", idx); 569 gctx->card->mc_write(gctx->card, idx, val); 570 return; 571 } 572 switch (align) { 573 case ATOM_SRC_DWORD: 574 DEBUG(".[31:0] <- 0x%08X\n", old_val); 575 break; 576 case ATOM_SRC_WORD0: 577 DEBUG(".[15:0] <- 0x%04X\n", old_val); 578 break; 579 case ATOM_SRC_WORD8: 580 DEBUG(".[23:8] <- 0x%04X\n", old_val); 581 break; 582 case ATOM_SRC_WORD16: 583 DEBUG(".[31:16] <- 0x%04X\n", old_val); 584 break; 585 case ATOM_SRC_BYTE0: 586 DEBUG(".[7:0] <- 0x%02X\n", old_val); 587 break; 588 case ATOM_SRC_BYTE8: 589 DEBUG(".[15:8] <- 0x%02X\n", old_val); 590 break; 591 case ATOM_SRC_BYTE16: 592 DEBUG(".[23:16] <- 0x%02X\n", old_val); 593 break; 594 case ATOM_SRC_BYTE24: 595 DEBUG(".[31:24] <- 0x%02X\n", old_val); 596 break; 597 } 598 } 599 600 static void atom_op_add(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_and(atom_exec_context *ctx, int *ptr, int arg) 615 { 616 uint8_t attr = U8((*ptr)++); 617 uint32_t dst, src, saved; 618 int dptr = *ptr; 619 SDEBUG(" dst: "); 620 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 621 SDEBUG(" src: "); 622 src = atom_get_src(ctx, attr, ptr); 623 dst &= src; 624 SDEBUG(" dst: "); 625 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 626 } 627 628 static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg) 629 { 630 printk("ATOM BIOS beeped!\n"); 631 } 632 633 static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) 634 { 635 int idx = U8((*ptr)++); 636 int r = 0; 637 638 if (idx < ATOM_TABLE_NAMES_CNT) 639 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]); 640 else 641 SDEBUG(" table: %d\n", idx); 642 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) 643 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); 644 if (r) { 645 ctx->abort = true; 646 } 647 } 648 649 static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) 650 { 651 uint8_t attr = U8((*ptr)++); 652 uint32_t saved; 653 int dptr = *ptr; 654 attr &= 0x38; 655 attr |= atom_def_dst[attr >> 3] << 6; 656 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 657 SDEBUG(" dst: "); 658 atom_put_dst(ctx, arg, attr, &dptr, 0, saved); 659 } 660 661 static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg) 662 { 663 uint8_t attr = U8((*ptr)++); 664 uint32_t dst, src; 665 SDEBUG(" src1: "); 666 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 667 SDEBUG(" src2: "); 668 src = atom_get_src(ctx, attr, ptr); 669 ctx->ctx->cs_equal = (dst == src); 670 ctx->ctx->cs_above = (dst > src); 671 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE", 672 ctx->ctx->cs_above ? "GT" : "LE"); 673 } 674 675 static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg) 676 { 677 unsigned count = U8((*ptr)++); 678 SDEBUG(" count: %d\n", count); 679 if (arg == ATOM_UNIT_MICROSEC) 680 udelay(count); 681 else if (!drm_can_sleep()) 682 mdelay(count); 683 else 684 msleep(count); 685 } 686 687 static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg) 688 { 689 uint8_t attr = U8((*ptr)++); 690 uint32_t dst, src; 691 SDEBUG(" src1: "); 692 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 693 SDEBUG(" src2: "); 694 src = atom_get_src(ctx, attr, ptr); 695 if (src != 0) { 696 ctx->ctx->divmul[0] = dst / src; 697 ctx->ctx->divmul[1] = dst % src; 698 } else { 699 ctx->ctx->divmul[0] = 0; 700 ctx->ctx->divmul[1] = 0; 701 } 702 } 703 704 static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg) 705 { 706 /* functionally, a nop */ 707 } 708 709 static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg) 710 { 711 int execute = 0, target = U16(*ptr); 712 unsigned long cjiffies; 713 714 (*ptr) += 2; 715 switch (arg) { 716 case ATOM_COND_ABOVE: 717 execute = ctx->ctx->cs_above; 718 break; 719 case ATOM_COND_ABOVEOREQUAL: 720 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal; 721 break; 722 case ATOM_COND_ALWAYS: 723 execute = 1; 724 break; 725 case ATOM_COND_BELOW: 726 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal); 727 break; 728 case ATOM_COND_BELOWOREQUAL: 729 execute = !ctx->ctx->cs_above; 730 break; 731 case ATOM_COND_EQUAL: 732 execute = ctx->ctx->cs_equal; 733 break; 734 case ATOM_COND_NOTEQUAL: 735 execute = !ctx->ctx->cs_equal; 736 break; 737 } 738 if (arg != ATOM_COND_ALWAYS) 739 SDEBUG(" taken: %s\n", execute ? "yes" : "no"); 740 SDEBUG(" target: 0x%04X\n", target); 741 if (execute) { 742 if (ctx->last_jump == (ctx->start + target)) { 743 cjiffies = jiffies; 744 if (time_after(cjiffies, ctx->last_jump_jiffies)) { 745 cjiffies -= ctx->last_jump_jiffies; 746 if ((jiffies_to_msecs(cjiffies) > 5000)) { 747 DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n"); 748 ctx->abort = true; 749 } 750 } else { 751 /* jiffies wrap around we will just wait a little longer */ 752 ctx->last_jump_jiffies = jiffies; 753 } 754 } else { 755 ctx->last_jump = ctx->start + target; 756 ctx->last_jump_jiffies = jiffies; 757 } 758 *ptr = ctx->start + target; 759 } 760 } 761 762 static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg) 763 { 764 uint8_t attr = U8((*ptr)++); 765 uint32_t dst, mask, src, saved; 766 int dptr = *ptr; 767 SDEBUG(" dst: "); 768 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 769 mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr); 770 SDEBUG(" mask: 0x%08x", mask); 771 SDEBUG(" src: "); 772 src = atom_get_src(ctx, attr, ptr); 773 dst &= mask; 774 dst |= src; 775 SDEBUG(" dst: "); 776 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 777 } 778 779 static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg) 780 { 781 uint8_t attr = U8((*ptr)++); 782 uint32_t src, saved; 783 int dptr = *ptr; 784 if (((attr >> 3) & 7) != ATOM_SRC_DWORD) 785 atom_get_dst(ctx, arg, attr, ptr, &saved, 0); 786 else { 787 atom_skip_dst(ctx, arg, attr, ptr); 788 saved = 0xCDCDCDCD; 789 } 790 SDEBUG(" src: "); 791 src = atom_get_src(ctx, attr, ptr); 792 SDEBUG(" dst: "); 793 atom_put_dst(ctx, arg, attr, &dptr, src, saved); 794 } 795 796 static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg) 797 { 798 uint8_t attr = U8((*ptr)++); 799 uint32_t dst, src; 800 SDEBUG(" src1: "); 801 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 802 SDEBUG(" src2: "); 803 src = atom_get_src(ctx, attr, ptr); 804 ctx->ctx->divmul[0] = dst * src; 805 } 806 807 static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg) 808 { 809 /* nothing */ 810 } 811 812 static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg) 813 { 814 uint8_t attr = U8((*ptr)++); 815 uint32_t dst, src, saved; 816 int dptr = *ptr; 817 SDEBUG(" dst: "); 818 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 819 SDEBUG(" src: "); 820 src = atom_get_src(ctx, attr, ptr); 821 dst |= src; 822 SDEBUG(" dst: "); 823 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 824 } 825 826 static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg) 827 { 828 uint8_t val = U8((*ptr)++); 829 SDEBUG("POST card output: 0x%02X\n", val); 830 } 831 832 static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg) 833 { 834 pr_info("unimplemented!\n"); 835 } 836 837 static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg) 838 { 839 pr_info("unimplemented!\n"); 840 } 841 842 static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg) 843 { 844 pr_info("unimplemented!\n"); 845 } 846 847 static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg) 848 { 849 int idx = U8(*ptr); 850 (*ptr)++; 851 SDEBUG(" block: %d\n", idx); 852 if (!idx) 853 ctx->ctx->data_block = 0; 854 else if (idx == 255) 855 ctx->ctx->data_block = ctx->start; 856 else 857 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx); 858 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block); 859 } 860 861 static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg) 862 { 863 uint8_t attr = U8((*ptr)++); 864 SDEBUG(" fb_base: "); 865 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr); 866 } 867 868 static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg) 869 { 870 int port; 871 switch (arg) { 872 case ATOM_PORT_ATI: 873 port = U16(*ptr); 874 if (port < ATOM_IO_NAMES_CNT) 875 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]); 876 else 877 SDEBUG(" port: %d\n", port); 878 if (!port) 879 ctx->ctx->io_mode = ATOM_IO_MM; 880 else 881 ctx->ctx->io_mode = ATOM_IO_IIO | port; 882 (*ptr) += 2; 883 break; 884 case ATOM_PORT_PCI: 885 ctx->ctx->io_mode = ATOM_IO_PCI; 886 (*ptr)++; 887 break; 888 case ATOM_PORT_SYSIO: 889 ctx->ctx->io_mode = ATOM_IO_SYSIO; 890 (*ptr)++; 891 break; 892 } 893 } 894 895 static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg) 896 { 897 ctx->ctx->reg_block = U16(*ptr); 898 (*ptr) += 2; 899 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block); 900 } 901 902 static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg) 903 { 904 uint8_t attr = U8((*ptr)++), shift; 905 uint32_t saved, dst; 906 int dptr = *ptr; 907 attr &= 0x38; 908 attr |= atom_def_dst[attr >> 3] << 6; 909 SDEBUG(" dst: "); 910 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 911 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 912 SDEBUG(" shift: %d\n", shift); 913 dst <<= shift; 914 SDEBUG(" dst: "); 915 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 916 } 917 918 static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg) 919 { 920 uint8_t attr = U8((*ptr)++), shift; 921 uint32_t saved, dst; 922 int dptr = *ptr; 923 attr &= 0x38; 924 attr |= atom_def_dst[attr >> 3] << 6; 925 SDEBUG(" dst: "); 926 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 927 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr); 928 SDEBUG(" shift: %d\n", shift); 929 dst >>= shift; 930 SDEBUG(" dst: "); 931 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 932 } 933 934 static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg) 935 { 936 uint8_t attr = U8((*ptr)++), shift; 937 uint32_t saved, dst; 938 int dptr = *ptr; 939 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 940 SDEBUG(" dst: "); 941 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 942 /* op needs to full dst value */ 943 dst = saved; 944 shift = atom_get_src(ctx, attr, ptr); 945 SDEBUG(" shift: %d\n", shift); 946 dst <<= shift; 947 dst &= atom_arg_mask[dst_align]; 948 dst >>= atom_arg_shift[dst_align]; 949 SDEBUG(" dst: "); 950 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 951 } 952 953 static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg) 954 { 955 uint8_t attr = U8((*ptr)++), shift; 956 uint32_t saved, dst; 957 int dptr = *ptr; 958 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3]; 959 SDEBUG(" dst: "); 960 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 961 /* op needs to full dst value */ 962 dst = saved; 963 shift = atom_get_src(ctx, attr, ptr); 964 SDEBUG(" shift: %d\n", shift); 965 dst >>= shift; 966 dst &= atom_arg_mask[dst_align]; 967 dst >>= atom_arg_shift[dst_align]; 968 SDEBUG(" dst: "); 969 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 970 } 971 972 static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg) 973 { 974 uint8_t attr = U8((*ptr)++); 975 uint32_t dst, src, saved; 976 int dptr = *ptr; 977 SDEBUG(" dst: "); 978 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 979 SDEBUG(" src: "); 980 src = atom_get_src(ctx, attr, ptr); 981 dst -= src; 982 SDEBUG(" dst: "); 983 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 984 } 985 986 static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg) 987 { 988 uint8_t attr = U8((*ptr)++); 989 uint32_t src, val, target; 990 SDEBUG(" switch: "); 991 src = atom_get_src(ctx, attr, ptr); 992 while (U16(*ptr) != ATOM_CASE_END) 993 if (U8(*ptr) == ATOM_CASE_MAGIC) { 994 (*ptr)++; 995 SDEBUG(" case: "); 996 val = 997 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM, 998 ptr); 999 target = U16(*ptr); 1000 if (val == src) { 1001 SDEBUG(" target: %04X\n", target); 1002 *ptr = ctx->start + target; 1003 return; 1004 } 1005 (*ptr) += 2; 1006 } else { 1007 pr_info("Bad case\n"); 1008 return; 1009 } 1010 (*ptr) += 2; 1011 } 1012 1013 static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg) 1014 { 1015 uint8_t attr = U8((*ptr)++); 1016 uint32_t dst, src; 1017 SDEBUG(" src1: "); 1018 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1); 1019 SDEBUG(" src2: "); 1020 src = atom_get_src(ctx, attr, ptr); 1021 ctx->ctx->cs_equal = ((dst & src) == 0); 1022 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE"); 1023 } 1024 1025 static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg) 1026 { 1027 uint8_t attr = U8((*ptr)++); 1028 uint32_t dst, src, saved; 1029 int dptr = *ptr; 1030 SDEBUG(" dst: "); 1031 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1); 1032 SDEBUG(" src: "); 1033 src = atom_get_src(ctx, attr, ptr); 1034 dst ^= src; 1035 SDEBUG(" dst: "); 1036 atom_put_dst(ctx, arg, attr, &dptr, dst, saved); 1037 } 1038 1039 static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg) 1040 { 1041 pr_info("unimplemented!\n"); 1042 } 1043 1044 static struct { 1045 void (*func) (atom_exec_context *, int *, int); 1046 int arg; 1047 } opcode_table[ATOM_OP_CNT] = { 1048 { 1049 NULL, 0}, { 1050 atom_op_move, ATOM_ARG_REG}, { 1051 atom_op_move, ATOM_ARG_PS}, { 1052 atom_op_move, ATOM_ARG_WS}, { 1053 atom_op_move, ATOM_ARG_FB}, { 1054 atom_op_move, ATOM_ARG_PLL}, { 1055 atom_op_move, ATOM_ARG_MC}, { 1056 atom_op_and, ATOM_ARG_REG}, { 1057 atom_op_and, ATOM_ARG_PS}, { 1058 atom_op_and, ATOM_ARG_WS}, { 1059 atom_op_and, ATOM_ARG_FB}, { 1060 atom_op_and, ATOM_ARG_PLL}, { 1061 atom_op_and, ATOM_ARG_MC}, { 1062 atom_op_or, ATOM_ARG_REG}, { 1063 atom_op_or, ATOM_ARG_PS}, { 1064 atom_op_or, ATOM_ARG_WS}, { 1065 atom_op_or, ATOM_ARG_FB}, { 1066 atom_op_or, ATOM_ARG_PLL}, { 1067 atom_op_or, ATOM_ARG_MC}, { 1068 atom_op_shift_left, ATOM_ARG_REG}, { 1069 atom_op_shift_left, ATOM_ARG_PS}, { 1070 atom_op_shift_left, ATOM_ARG_WS}, { 1071 atom_op_shift_left, ATOM_ARG_FB}, { 1072 atom_op_shift_left, ATOM_ARG_PLL}, { 1073 atom_op_shift_left, ATOM_ARG_MC}, { 1074 atom_op_shift_right, ATOM_ARG_REG}, { 1075 atom_op_shift_right, ATOM_ARG_PS}, { 1076 atom_op_shift_right, ATOM_ARG_WS}, { 1077 atom_op_shift_right, ATOM_ARG_FB}, { 1078 atom_op_shift_right, ATOM_ARG_PLL}, { 1079 atom_op_shift_right, ATOM_ARG_MC}, { 1080 atom_op_mul, ATOM_ARG_REG}, { 1081 atom_op_mul, ATOM_ARG_PS}, { 1082 atom_op_mul, ATOM_ARG_WS}, { 1083 atom_op_mul, ATOM_ARG_FB}, { 1084 atom_op_mul, ATOM_ARG_PLL}, { 1085 atom_op_mul, ATOM_ARG_MC}, { 1086 atom_op_div, ATOM_ARG_REG}, { 1087 atom_op_div, ATOM_ARG_PS}, { 1088 atom_op_div, ATOM_ARG_WS}, { 1089 atom_op_div, ATOM_ARG_FB}, { 1090 atom_op_div, ATOM_ARG_PLL}, { 1091 atom_op_div, ATOM_ARG_MC}, { 1092 atom_op_add, ATOM_ARG_REG}, { 1093 atom_op_add, ATOM_ARG_PS}, { 1094 atom_op_add, ATOM_ARG_WS}, { 1095 atom_op_add, ATOM_ARG_FB}, { 1096 atom_op_add, ATOM_ARG_PLL}, { 1097 atom_op_add, ATOM_ARG_MC}, { 1098 atom_op_sub, ATOM_ARG_REG}, { 1099 atom_op_sub, ATOM_ARG_PS}, { 1100 atom_op_sub, ATOM_ARG_WS}, { 1101 atom_op_sub, ATOM_ARG_FB}, { 1102 atom_op_sub, ATOM_ARG_PLL}, { 1103 atom_op_sub, ATOM_ARG_MC}, { 1104 atom_op_setport, ATOM_PORT_ATI}, { 1105 atom_op_setport, ATOM_PORT_PCI}, { 1106 atom_op_setport, ATOM_PORT_SYSIO}, { 1107 atom_op_setregblock, 0}, { 1108 atom_op_setfbbase, 0}, { 1109 atom_op_compare, ATOM_ARG_REG}, { 1110 atom_op_compare, ATOM_ARG_PS}, { 1111 atom_op_compare, ATOM_ARG_WS}, { 1112 atom_op_compare, ATOM_ARG_FB}, { 1113 atom_op_compare, ATOM_ARG_PLL}, { 1114 atom_op_compare, ATOM_ARG_MC}, { 1115 atom_op_switch, 0}, { 1116 atom_op_jump, ATOM_COND_ALWAYS}, { 1117 atom_op_jump, ATOM_COND_EQUAL}, { 1118 atom_op_jump, ATOM_COND_BELOW}, { 1119 atom_op_jump, ATOM_COND_ABOVE}, { 1120 atom_op_jump, ATOM_COND_BELOWOREQUAL}, { 1121 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, { 1122 atom_op_jump, ATOM_COND_NOTEQUAL}, { 1123 atom_op_test, ATOM_ARG_REG}, { 1124 atom_op_test, ATOM_ARG_PS}, { 1125 atom_op_test, ATOM_ARG_WS}, { 1126 atom_op_test, ATOM_ARG_FB}, { 1127 atom_op_test, ATOM_ARG_PLL}, { 1128 atom_op_test, ATOM_ARG_MC}, { 1129 atom_op_delay, ATOM_UNIT_MILLISEC}, { 1130 atom_op_delay, ATOM_UNIT_MICROSEC}, { 1131 atom_op_calltable, 0}, { 1132 atom_op_repeat, 0}, { 1133 atom_op_clear, ATOM_ARG_REG}, { 1134 atom_op_clear, ATOM_ARG_PS}, { 1135 atom_op_clear, ATOM_ARG_WS}, { 1136 atom_op_clear, ATOM_ARG_FB}, { 1137 atom_op_clear, ATOM_ARG_PLL}, { 1138 atom_op_clear, ATOM_ARG_MC}, { 1139 atom_op_nop, 0}, { 1140 atom_op_eot, 0}, { 1141 atom_op_mask, ATOM_ARG_REG}, { 1142 atom_op_mask, ATOM_ARG_PS}, { 1143 atom_op_mask, ATOM_ARG_WS}, { 1144 atom_op_mask, ATOM_ARG_FB}, { 1145 atom_op_mask, ATOM_ARG_PLL}, { 1146 atom_op_mask, ATOM_ARG_MC}, { 1147 atom_op_postcard, 0}, { 1148 atom_op_beep, 0}, { 1149 atom_op_savereg, 0}, { 1150 atom_op_restorereg, 0}, { 1151 atom_op_setdatablock, 0}, { 1152 atom_op_xor, ATOM_ARG_REG}, { 1153 atom_op_xor, ATOM_ARG_PS}, { 1154 atom_op_xor, ATOM_ARG_WS}, { 1155 atom_op_xor, ATOM_ARG_FB}, { 1156 atom_op_xor, ATOM_ARG_PLL}, { 1157 atom_op_xor, ATOM_ARG_MC}, { 1158 atom_op_shl, ATOM_ARG_REG}, { 1159 atom_op_shl, ATOM_ARG_PS}, { 1160 atom_op_shl, ATOM_ARG_WS}, { 1161 atom_op_shl, ATOM_ARG_FB}, { 1162 atom_op_shl, ATOM_ARG_PLL}, { 1163 atom_op_shl, ATOM_ARG_MC}, { 1164 atom_op_shr, ATOM_ARG_REG}, { 1165 atom_op_shr, ATOM_ARG_PS}, { 1166 atom_op_shr, ATOM_ARG_WS}, { 1167 atom_op_shr, ATOM_ARG_FB}, { 1168 atom_op_shr, ATOM_ARG_PLL}, { 1169 atom_op_shr, ATOM_ARG_MC}, { 1170 atom_op_debug, 0},}; 1171 1172 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) 1173 { 1174 int base = CU16(ctx->cmd_table + 4 + 2 * index); 1175 int len, ws, ps, ptr; 1176 unsigned char op; 1177 atom_exec_context ectx; 1178 int ret = 0; 1179 1180 if (!base) 1181 return -EINVAL; 1182 1183 len = CU16(base + ATOM_CT_SIZE_PTR); 1184 ws = CU8(base + ATOM_CT_WS_PTR); 1185 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK; 1186 ptr = base + ATOM_CT_CODE_PTR; 1187 1188 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps); 1189 1190 ectx.ctx = ctx; 1191 ectx.ps_shift = ps / 4; 1192 ectx.start = base; 1193 ectx.ps = params; 1194 ectx.abort = false; 1195 ectx.last_jump = 0; 1196 if (ws) 1197 ectx.ws = kcalloc(4, ws, GFP_KERNEL); 1198 else 1199 ectx.ws = NULL; 1200 1201 debug_depth++; 1202 while (1) { 1203 op = CU8(ptr++); 1204 if (op < ATOM_OP_NAMES_CNT) 1205 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1); 1206 else 1207 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1); 1208 if (ectx.abort) { 1209 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n", 1210 base, len, ws, ps, ptr - 1); 1211 ret = -EINVAL; 1212 goto free; 1213 } 1214 1215 if (op < ATOM_OP_CNT && op > 0) 1216 opcode_table[op].func(&ectx, &ptr, 1217 opcode_table[op].arg); 1218 else 1219 break; 1220 1221 if (op == ATOM_OP_EOT) 1222 break; 1223 } 1224 debug_depth--; 1225 SDEBUG("<<\n"); 1226 1227 free: 1228 if (ws) 1229 kfree(ectx.ws); 1230 return ret; 1231 } 1232 1233 int atom_execute_table_scratch_unlocked(struct atom_context *ctx, int index, uint32_t * params) 1234 { 1235 int r; 1236 1237 mutex_lock(&ctx->mutex); 1238 /* reset data block */ 1239 ctx->data_block = 0; 1240 /* reset reg block */ 1241 ctx->reg_block = 0; 1242 /* reset fb window */ 1243 ctx->fb_base = 0; 1244 /* reset io mode */ 1245 ctx->io_mode = ATOM_IO_MM; 1246 /* reset divmul */ 1247 ctx->divmul[0] = 0; 1248 ctx->divmul[1] = 0; 1249 r = atom_execute_table_locked(ctx, index, params); 1250 mutex_unlock(&ctx->mutex); 1251 return r; 1252 } 1253 1254 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) 1255 { 1256 int r; 1257 mutex_lock(&ctx->scratch_mutex); 1258 r = atom_execute_table_scratch_unlocked(ctx, index, params); 1259 mutex_unlock(&ctx->scratch_mutex); 1260 return r; 1261 } 1262 1263 static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; 1264 1265 static void atom_index_iio(struct atom_context *ctx, int base) 1266 { 1267 ctx->iio = kzalloc(2 * 256, GFP_KERNEL); 1268 if (!ctx->iio) 1269 return; 1270 while (CU8(base) == ATOM_IIO_START) { 1271 ctx->iio[CU8(base + 1)] = base + 2; 1272 base += 2; 1273 while (CU8(base) != ATOM_IIO_END) 1274 base += atom_iio_len[CU8(base)]; 1275 base += 3; 1276 } 1277 } 1278 1279 struct atom_context *atom_parse(struct card_info *card, void *bios) 1280 { 1281 int base; 1282 struct atom_context *ctx = 1283 kzalloc(sizeof(struct atom_context), GFP_KERNEL); 1284 char *str; 1285 char name[512]; 1286 int i; 1287 1288 if (!ctx) 1289 return NULL; 1290 1291 ctx->card = card; 1292 ctx->bios = bios; 1293 1294 if (CU16(0) != ATOM_BIOS_MAGIC) { 1295 pr_info("Invalid BIOS magic\n"); 1296 kfree(ctx); 1297 return NULL; 1298 } 1299 if (strncmp 1300 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC, 1301 strlen(ATOM_ATI_MAGIC))) { 1302 pr_info("Invalid ATI magic\n"); 1303 kfree(ctx); 1304 return NULL; 1305 } 1306 1307 base = CU16(ATOM_ROM_TABLE_PTR); 1308 if (strncmp 1309 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC, 1310 strlen(ATOM_ROM_MAGIC))) { 1311 pr_info("Invalid ATOM magic\n"); 1312 kfree(ctx); 1313 return NULL; 1314 } 1315 1316 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR); 1317 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR); 1318 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4); 1319 if (!ctx->iio) { 1320 atom_destroy(ctx); 1321 return NULL; 1322 } 1323 1324 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR)); 1325 while (*str && ((*str == '\n') || (*str == '\r'))) 1326 str++; 1327 /* name string isn't always 0 terminated */ 1328 for (i = 0; i < 511; i++) { 1329 name[i] = str[i]; 1330 if (name[i] < '.' || name[i] > 'z') { 1331 name[i] = 0; 1332 break; 1333 } 1334 } 1335 pr_info("ATOM BIOS: %s\n", name); 1336 1337 return ctx; 1338 } 1339 1340 int atom_asic_init(struct atom_context *ctx) 1341 { 1342 struct radeon_device *rdev = ctx->card->dev->dev_private; 1343 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR); 1344 uint32_t ps[16]; 1345 int ret; 1346 1347 memset(ps, 0, 64); 1348 1349 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR)); 1350 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR)); 1351 if (!ps[0] || !ps[1]) 1352 return 1; 1353 1354 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT)) 1355 return 1; 1356 ret = atom_execute_table(ctx, ATOM_CMD_INIT, ps); 1357 if (ret) 1358 return ret; 1359 1360 memset(ps, 0, 64); 1361 1362 if (rdev->family < CHIP_R600) { 1363 if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL)) 1364 atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps); 1365 } 1366 return ret; 1367 } 1368 1369 void atom_destroy(struct atom_context *ctx) 1370 { 1371 kfree(ctx->iio); 1372 kfree(ctx); 1373 } 1374 1375 bool atom_parse_data_header(struct atom_context *ctx, int index, 1376 uint16_t * size, uint8_t * frev, uint8_t * crev, 1377 uint16_t * data_start) 1378 { 1379 int offset = index * 2 + 4; 1380 int idx = CU16(ctx->data_table + offset); 1381 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4); 1382 1383 if (!mdt[index]) 1384 return false; 1385 1386 if (size) 1387 *size = CU16(idx); 1388 if (frev) 1389 *frev = CU8(idx + 2); 1390 if (crev) 1391 *crev = CU8(idx + 3); 1392 *data_start = idx; 1393 return true; 1394 } 1395 1396 bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev, 1397 uint8_t * crev) 1398 { 1399 int offset = index * 2 + 4; 1400 int idx = CU16(ctx->cmd_table + offset); 1401 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4); 1402 1403 if (!mct[index]) 1404 return false; 1405 1406 if (frev) 1407 *frev = CU8(idx + 2); 1408 if (crev) 1409 *crev = CU8(idx + 3); 1410 return true; 1411 } 1412 1413 int atom_allocate_fb_scratch(struct atom_context *ctx) 1414 { 1415 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware); 1416 uint16_t data_offset; 1417 int usage_bytes = 0; 1418 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage; 1419 1420 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) { 1421 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset); 1422 1423 DRM_DEBUG("atom firmware requested %08x %dkb\n", 1424 le32_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware), 1425 le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb)); 1426 1427 usage_bytes = le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb) * 1024; 1428 } 1429 ctx->scratch_size_bytes = 0; 1430 if (usage_bytes == 0) 1431 usage_bytes = 20 * 1024; 1432 /* allocate some scratch memory */ 1433 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL); 1434 if (!ctx->scratch) 1435 return -ENOMEM; 1436 ctx->scratch_size_bytes = usage_bytes; 1437 return 0; 1438 } 1439
Indexes created Sat Sep 20 22:09:52 GMT 2025