linux/drivers/gpu/drm/radeon/atom.c
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   1/*
   2 * Copyright 2008 Advanced Micro Devices, Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 * Author: Stanislaw Skowronek
  23 */
  24
  25#include <linux/module.h>
  26#include <linux/sched.h>
  27#include <linux/slab.h>
  28#include <asm/unaligned.h>
  29
  30#define ATOM_DEBUG
  31
  32#include "atom.h"
  33#include "atom-names.h"
  34#include "atom-bits.h"
  35#include "radeon.h"
  36
  37#define ATOM_COND_ABOVE         0
  38#define ATOM_COND_ABOVEOREQUAL  1
  39#define ATOM_COND_ALWAYS        2
  40#define ATOM_COND_BELOW         3
  41#define ATOM_COND_BELOWOREQUAL  4
  42#define ATOM_COND_EQUAL         5
  43#define ATOM_COND_NOTEQUAL      6
  44
  45#define ATOM_PORT_ATI   0
  46#define ATOM_PORT_PCI   1
  47#define ATOM_PORT_SYSIO 2
  48
  49#define ATOM_UNIT_MICROSEC      0
  50#define ATOM_UNIT_MILLISEC      1
  51
  52#define PLL_INDEX       2
  53#define PLL_DATA        3
  54
  55typedef struct {
  56        struct atom_context *ctx;
  57        uint32_t *ps, *ws;
  58        int ps_shift;
  59        uint16_t start;
  60        unsigned last_jump;
  61        unsigned long last_jump_jiffies;
  62        bool abort;
  63} atom_exec_context;
  64
  65int atom_debug = 0;
  66static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params);
  67int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params);
  68
  69static uint32_t atom_arg_mask[8] = {
  70        0xFFFFFFFF, 0x0000FFFF, 0x00FFFF00, 0xFFFF0000,
  71        0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
  72};
  73static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 };
  74
  75static int atom_dst_to_src[8][4] = {
  76        /* translate destination alignment field to the source alignment encoding */
  77        {0, 0, 0, 0},
  78        {1, 2, 3, 0},
  79        {1, 2, 3, 0},
  80        {1, 2, 3, 0},
  81        {4, 5, 6, 7},
  82        {4, 5, 6, 7},
  83        {4, 5, 6, 7},
  84        {4, 5, 6, 7},
  85};
  86static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 };
  87
  88static int debug_depth = 0;
  89#ifdef ATOM_DEBUG
  90static void debug_print_spaces(int n)
  91{
  92        while (n--)
  93                printk("   ");
  94}
  95
  96#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0)
  97#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0)
  98#else
  99#define DEBUG(...) do { } while (0)
 100#define SDEBUG(...) do { } while (0)
 101#endif
 102
 103static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
 104                                 uint32_t index, uint32_t data)
 105{
 106        struct radeon_device *rdev = ctx->card->dev->dev_private;
 107        uint32_t temp = 0xCDCDCDCD;
 108
 109        while (1)
 110                switch (CU8(base)) {
 111                case ATOM_IIO_NOP:
 112                        base++;
 113                        break;
 114                case ATOM_IIO_READ:
 115                        temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1));
 116                        base += 3;
 117                        break;
 118                case ATOM_IIO_WRITE:
 119                        if (rdev->family == CHIP_RV515)
 120                                (void)ctx->card->ioreg_read(ctx->card, CU16(base + 1));
 121                        ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp);
 122                        base += 3;
 123                        break;
 124                case ATOM_IIO_CLEAR:
 125                        temp &=
 126                            ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
 127                              CU8(base + 2));
 128                        base += 3;
 129                        break;
 130                case ATOM_IIO_SET:
 131                        temp |=
 132                            (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base +
 133                                                                        2);
 134                        base += 3;
 135                        break;
 136                case ATOM_IIO_MOVE_INDEX:
 137                        temp &=
 138                            ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
 139                              CU8(base + 3));
 140                        temp |=
 141                            ((index >> CU8(base + 2)) &
 142                             (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
 143                                                                          3);
 144                        base += 4;
 145                        break;
 146                case ATOM_IIO_MOVE_DATA:
 147                        temp &=
 148                            ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
 149                              CU8(base + 3));
 150                        temp |=
 151                            ((data >> CU8(base + 2)) &
 152                             (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
 153                                                                          3);
 154                        base += 4;
 155                        break;
 156                case ATOM_IIO_MOVE_ATTR:
 157                        temp &=
 158                            ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
 159                              CU8(base + 3));
 160                        temp |=
 161                            ((ctx->
 162                              io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 -
 163                                                                          CU8
 164                                                                          (base
 165                                                                           +
 166                                                                           1))))
 167                            << CU8(base + 3);
 168                        base += 4;
 169                        break;
 170                case ATOM_IIO_END:
 171                        return temp;
 172                default:
 173                        pr_info("Unknown IIO opcode\n");
 174                        return 0;
 175                }
 176}
 177
 178static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr,
 179                                 int *ptr, uint32_t *saved, int print)
 180{
 181        uint32_t idx, val = 0xCDCDCDCD, align, arg;
 182        struct atom_context *gctx = ctx->ctx;
 183        arg = attr & 7;
 184        align = (attr >> 3) & 7;
 185        switch (arg) {
 186        case ATOM_ARG_REG:
 187                idx = U16(*ptr);
 188                (*ptr) += 2;
 189                if (print)
 190                        DEBUG("REG[0x%04X]", idx);
 191                idx += gctx->reg_block;
 192                switch (gctx->io_mode) {
 193                case ATOM_IO_MM:
 194                        val = gctx->card->reg_read(gctx->card, idx);
 195                        break;
 196                case ATOM_IO_PCI:
 197                        pr_info("PCI registers are not implemented\n");
 198                        return 0;
 199                case ATOM_IO_SYSIO:
 200                        pr_info("SYSIO registers are not implemented\n");
 201                        return 0;
 202                default:
 203                        if (!(gctx->io_mode & 0x80)) {
 204                                pr_info("Bad IO mode\n");
 205                                return 0;
 206                        }
 207                        if (!gctx->iio[gctx->io_mode & 0x7F]) {
 208                                pr_info("Undefined indirect IO read method %d\n",
 209                                        gctx->io_mode & 0x7F);
 210                                return 0;
 211                        }
 212                        val =
 213                            atom_iio_execute(gctx,
 214                                             gctx->iio[gctx->io_mode & 0x7F],
 215                                             idx, 0);
 216                }
 217                break;
 218        case ATOM_ARG_PS:
 219                idx = U8(*ptr);
 220                (*ptr)++;
 221                /* get_unaligned_le32 avoids unaligned accesses from atombios
 222                 * tables, noticed on a DEC Alpha. */
 223                val = get_unaligned_le32((u32 *)&ctx->ps[idx]);
 224                if (print)
 225                        DEBUG("PS[0x%02X,0x%04X]", idx, val);
 226                break;
 227        case ATOM_ARG_WS:
 228                idx = U8(*ptr);
 229                (*ptr)++;
 230                if (print)
 231                        DEBUG("WS[0x%02X]", idx);
 232                switch (idx) {
 233                case ATOM_WS_QUOTIENT:
 234                        val = gctx->divmul[0];
 235                        break;
 236                case ATOM_WS_REMAINDER:
 237                        val = gctx->divmul[1];
 238                        break;
 239                case ATOM_WS_DATAPTR:
 240                        val = gctx->data_block;
 241                        break;
 242                case ATOM_WS_SHIFT:
 243                        val = gctx->shift;
 244                        break;
 245                case ATOM_WS_OR_MASK:
 246                        val = 1 << gctx->shift;
 247                        break;
 248                case ATOM_WS_AND_MASK:
 249                        val = ~(1 << gctx->shift);
 250                        break;
 251                case ATOM_WS_FB_WINDOW:
 252                        val = gctx->fb_base;
 253                        break;
 254                case ATOM_WS_ATTRIBUTES:
 255                        val = gctx->io_attr;
 256                        break;
 257                case ATOM_WS_REGPTR:
 258                        val = gctx->reg_block;
 259                        break;
 260                default:
 261                        val = ctx->ws[idx];
 262                }
 263                break;
 264        case ATOM_ARG_ID:
 265                idx = U16(*ptr);
 266                (*ptr) += 2;
 267                if (print) {
 268                        if (gctx->data_block)
 269                                DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block);
 270                        else
 271                                DEBUG("ID[0x%04X]", idx);
 272                }
 273                val = U32(idx + gctx->data_block);
 274                break;
 275        case ATOM_ARG_FB:
 276                idx = U8(*ptr);
 277                (*ptr)++;
 278                if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) {
 279                        DRM_ERROR("ATOM: fb read beyond scratch region: %d vs. %d\n",
 280                                  gctx->fb_base + (idx * 4), gctx->scratch_size_bytes);
 281                        val = 0;
 282                } else
 283                        val = gctx->scratch[(gctx->fb_base / 4) + idx];
 284                if (print)
 285                        DEBUG("FB[0x%02X]", idx);
 286                break;
 287        case ATOM_ARG_IMM:
 288                switch (align) {
 289                case ATOM_SRC_DWORD:
 290                        val = U32(*ptr);
 291                        (*ptr) += 4;
 292                        if (print)
 293                                DEBUG("IMM 0x%08X\n", val);
 294                        return val;
 295                case ATOM_SRC_WORD0:
 296                case ATOM_SRC_WORD8:
 297                case ATOM_SRC_WORD16:
 298                        val = U16(*ptr);
 299                        (*ptr) += 2;
 300                        if (print)
 301                                DEBUG("IMM 0x%04X\n", val);
 302                        return val;
 303                case ATOM_SRC_BYTE0:
 304                case ATOM_SRC_BYTE8:
 305                case ATOM_SRC_BYTE16:
 306                case ATOM_SRC_BYTE24:
 307                        val = U8(*ptr);
 308                        (*ptr)++;
 309                        if (print)
 310                                DEBUG("IMM 0x%02X\n", val);
 311                        return val;
 312                }
 313                return 0;
 314        case ATOM_ARG_PLL:
 315                idx = U8(*ptr);
 316                (*ptr)++;
 317                if (print)
 318                        DEBUG("PLL[0x%02X]", idx);
 319                val = gctx->card->pll_read(gctx->card, idx);
 320                break;
 321        case ATOM_ARG_MC:
 322                idx = U8(*ptr);
 323                (*ptr)++;
 324                if (print)
 325                        DEBUG("MC[0x%02X]", idx);
 326                val = gctx->card->mc_read(gctx->card, idx);
 327                break;
 328        }
 329        if (saved)
 330                *saved = val;
 331        val &= atom_arg_mask[align];
 332        val >>= atom_arg_shift[align];
 333        if (print)
 334                switch (align) {
 335                case ATOM_SRC_DWORD:
 336                        DEBUG(".[31:0] -> 0x%08X\n", val);
 337                        break;
 338                case ATOM_SRC_WORD0:
 339                        DEBUG(".[15:0] -> 0x%04X\n", val);
 340                        break;
 341                case ATOM_SRC_WORD8:
 342                        DEBUG(".[23:8] -> 0x%04X\n", val);
 343                        break;
 344                case ATOM_SRC_WORD16:
 345                        DEBUG(".[31:16] -> 0x%04X\n", val);
 346                        break;
 347                case ATOM_SRC_BYTE0:
 348                        DEBUG(".[7:0] -> 0x%02X\n", val);
 349                        break;
 350                case ATOM_SRC_BYTE8:
 351                        DEBUG(".[15:8] -> 0x%02X\n", val);
 352                        break;
 353                case ATOM_SRC_BYTE16:
 354                        DEBUG(".[23:16] -> 0x%02X\n", val);
 355                        break;
 356                case ATOM_SRC_BYTE24:
 357                        DEBUG(".[31:24] -> 0x%02X\n", val);
 358                        break;
 359                }
 360        return val;
 361}
 362
 363static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr)
 364{
 365        uint32_t align = (attr >> 3) & 7, arg = attr & 7;
 366        switch (arg) {
 367        case ATOM_ARG_REG:
 368        case ATOM_ARG_ID:
 369                (*ptr) += 2;
 370                break;
 371        case ATOM_ARG_PLL:
 372        case ATOM_ARG_MC:
 373        case ATOM_ARG_PS:
 374        case ATOM_ARG_WS:
 375        case ATOM_ARG_FB:
 376                (*ptr)++;
 377                break;
 378        case ATOM_ARG_IMM:
 379                switch (align) {
 380                case ATOM_SRC_DWORD:
 381                        (*ptr) += 4;
 382                        return;
 383                case ATOM_SRC_WORD0:
 384                case ATOM_SRC_WORD8:
 385                case ATOM_SRC_WORD16:
 386                        (*ptr) += 2;
 387                        return;
 388                case ATOM_SRC_BYTE0:
 389                case ATOM_SRC_BYTE8:
 390                case ATOM_SRC_BYTE16:
 391                case ATOM_SRC_BYTE24:
 392                        (*ptr)++;
 393                        return;
 394                }
 395                return;
 396        }
 397}
 398
 399static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr)
 400{
 401        return atom_get_src_int(ctx, attr, ptr, NULL, 1);
 402}
 403
 404static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr)
 405{
 406        uint32_t val = 0xCDCDCDCD;
 407
 408        switch (align) {
 409        case ATOM_SRC_DWORD:
 410                val = U32(*ptr);
 411                (*ptr) += 4;
 412                break;
 413        case ATOM_SRC_WORD0:
 414        case ATOM_SRC_WORD8:
 415        case ATOM_SRC_WORD16:
 416                val = U16(*ptr);
 417                (*ptr) += 2;
 418                break;
 419        case ATOM_SRC_BYTE0:
 420        case ATOM_SRC_BYTE8:
 421        case ATOM_SRC_BYTE16:
 422        case ATOM_SRC_BYTE24:
 423                val = U8(*ptr);
 424                (*ptr)++;
 425                break;
 426        }
 427        return val;
 428}
 429
 430static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr,
 431                             int *ptr, uint32_t *saved, int print)
 432{
 433        return atom_get_src_int(ctx,
 434                                arg | atom_dst_to_src[(attr >> 3) &
 435                                                      7][(attr >> 6) & 3] << 3,
 436                                ptr, saved, print);
 437}
 438
 439static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr)
 440{
 441        atom_skip_src_int(ctx,
 442                          arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) &
 443                                                                 3] << 3, ptr);
 444}
 445
 446static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr,
 447                         int *ptr, uint32_t val, uint32_t saved)
 448{
 449        uint32_t align =
 450            atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val =
 451            val, idx;
 452        struct atom_context *gctx = ctx->ctx;
 453        old_val &= atom_arg_mask[align] >> atom_arg_shift[align];
 454        val <<= atom_arg_shift[align];
 455        val &= atom_arg_mask[align];
 456        saved &= ~atom_arg_mask[align];
 457        val |= saved;
 458        switch (arg) {
 459        case ATOM_ARG_REG:
 460                idx = U16(*ptr);
 461                (*ptr) += 2;
 462                DEBUG("REG[0x%04X]", idx);
 463                idx += gctx->reg_block;
 464                switch (gctx->io_mode) {
 465                case ATOM_IO_MM:
 466                        if (idx == 0)
 467                                gctx->card->reg_write(gctx->card, idx,
 468                                                      val << 2);
 469                        else
 470                                gctx->card->reg_write(gctx->card, idx, val);
 471                        break;
 472                case ATOM_IO_PCI:
 473                        pr_info("PCI registers are not implemented\n");
 474                        return;
 475                case ATOM_IO_SYSIO:
 476                        pr_info("SYSIO registers are not implemented\n");
 477                        return;
 478                default:
 479                        if (!(gctx->io_mode & 0x80)) {
 480                                pr_info("Bad IO mode\n");
 481                                return;
 482                        }
 483                        if (!gctx->iio[gctx->io_mode & 0xFF]) {
 484                                pr_info("Undefined indirect IO write method %d\n",
 485                                        gctx->io_mode & 0x7F);
 486                                return;
 487                        }
 488                        atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF],
 489                                         idx, val);
 490                }
 491                break;
 492        case ATOM_ARG_PS:
 493                idx = U8(*ptr);
 494                (*ptr)++;
 495                DEBUG("PS[0x%02X]", idx);
 496                ctx->ps[idx] = cpu_to_le32(val);
 497                break;
 498        case ATOM_ARG_WS:
 499                idx = U8(*ptr);
 500                (*ptr)++;
 501                DEBUG("WS[0x%02X]", idx);
 502                switch (idx) {
 503                case ATOM_WS_QUOTIENT:
 504                        gctx->divmul[0] = val;
 505                        break;
 506                case ATOM_WS_REMAINDER:
 507                        gctx->divmul[1] = val;
 508                        break;
 509                case ATOM_WS_DATAPTR:
 510                        gctx->data_block = val;
 511                        break;
 512                case ATOM_WS_SHIFT:
 513                        gctx->shift = val;
 514                        break;
 515                case ATOM_WS_OR_MASK:
 516                case ATOM_WS_AND_MASK:
 517                        break;
 518                case ATOM_WS_FB_WINDOW:
 519                        gctx->fb_base = val;
 520                        break;
 521                case ATOM_WS_ATTRIBUTES:
 522                        gctx->io_attr = val;
 523                        break;
 524                case ATOM_WS_REGPTR:
 525                        gctx->reg_block = val;
 526                        break;
 527                default:
 528                        ctx->ws[idx] = val;
 529                }
 530                break;
 531        case ATOM_ARG_FB:
 532                idx = U8(*ptr);
 533                (*ptr)++;
 534                if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) {
 535                        DRM_ERROR("ATOM: fb write beyond scratch region: %d vs. %d\n",
 536                                  gctx->fb_base + (idx * 4), gctx->scratch_size_bytes);
 537                } else
 538                        gctx->scratch[(gctx->fb_base / 4) + idx] = val;
 539                DEBUG("FB[0x%02X]", idx);
 540                break;
 541        case ATOM_ARG_PLL:
 542                idx = U8(*ptr);
 543                (*ptr)++;
 544                DEBUG("PLL[0x%02X]", idx);
 545                gctx->card->pll_write(gctx->card, idx, val);
 546                break;
 547        case ATOM_ARG_MC:
 548                idx = U8(*ptr);
 549                (*ptr)++;
 550                DEBUG("MC[0x%02X]", idx);
 551                gctx->card->mc_write(gctx->card, idx, val);
 552                return;
 553        }
 554        switch (align) {
 555        case ATOM_SRC_DWORD:
 556                DEBUG(".[31:0] <- 0x%08X\n", old_val);
 557                break;
 558        case ATOM_SRC_WORD0:
 559                DEBUG(".[15:0] <- 0x%04X\n", old_val);
 560                break;
 561        case ATOM_SRC_WORD8:
 562                DEBUG(".[23:8] <- 0x%04X\n", old_val);
 563                break;
 564        case ATOM_SRC_WORD16:
 565                DEBUG(".[31:16] <- 0x%04X\n", old_val);
 566                break;
 567        case ATOM_SRC_BYTE0:
 568                DEBUG(".[7:0] <- 0x%02X\n", old_val);
 569                break;
 570        case ATOM_SRC_BYTE8:
 571                DEBUG(".[15:8] <- 0x%02X\n", old_val);
 572                break;
 573        case ATOM_SRC_BYTE16:
 574                DEBUG(".[23:16] <- 0x%02X\n", old_val);
 575                break;
 576        case ATOM_SRC_BYTE24:
 577                DEBUG(".[31:24] <- 0x%02X\n", old_val);
 578                break;
 579        }
 580}
 581
 582static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg)
 583{
 584        uint8_t attr = U8((*ptr)++);
 585        uint32_t dst, src, saved;
 586        int dptr = *ptr;
 587        SDEBUG("   dst: ");
 588        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 589        SDEBUG("   src: ");
 590        src = atom_get_src(ctx, attr, ptr);
 591        dst += src;
 592        SDEBUG("   dst: ");
 593        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 594}
 595
 596static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg)
 597{
 598        uint8_t attr = U8((*ptr)++);
 599        uint32_t dst, src, saved;
 600        int dptr = *ptr;
 601        SDEBUG("   dst: ");
 602        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 603        SDEBUG("   src: ");
 604        src = atom_get_src(ctx, attr, ptr);
 605        dst &= src;
 606        SDEBUG("   dst: ");
 607        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 608}
 609
 610static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg)
 611{
 612        printk("ATOM BIOS beeped!\n");
 613}
 614
 615static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg)
 616{
 617        int idx = U8((*ptr)++);
 618        int r = 0;
 619
 620        if (idx < ATOM_TABLE_NAMES_CNT)
 621                SDEBUG("   table: %d (%s)\n", idx, atom_table_names[idx]);
 622        else
 623                SDEBUG("   table: %d\n", idx);
 624        if (U16(ctx->ctx->cmd_table + 4 + 2 * idx))
 625                r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift);
 626        if (r) {
 627                ctx->abort = true;
 628        }
 629}
 630
 631static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg)
 632{
 633        uint8_t attr = U8((*ptr)++);
 634        uint32_t saved;
 635        int dptr = *ptr;
 636        attr &= 0x38;
 637        attr |= atom_def_dst[attr >> 3] << 6;
 638        atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
 639        SDEBUG("   dst: ");
 640        atom_put_dst(ctx, arg, attr, &dptr, 0, saved);
 641}
 642
 643static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg)
 644{
 645        uint8_t attr = U8((*ptr)++);
 646        uint32_t dst, src;
 647        SDEBUG("   src1: ");
 648        dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
 649        SDEBUG("   src2: ");
 650        src = atom_get_src(ctx, attr, ptr);
 651        ctx->ctx->cs_equal = (dst == src);
 652        ctx->ctx->cs_above = (dst > src);
 653        SDEBUG("   result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE",
 654               ctx->ctx->cs_above ? "GT" : "LE");
 655}
 656
 657static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
 658{
 659        unsigned count = U8((*ptr)++);
 660        SDEBUG("   count: %d\n", count);
 661        if (arg == ATOM_UNIT_MICROSEC)
 662                udelay(count);
 663        else if (!drm_can_sleep())
 664                mdelay(count);
 665        else
 666                msleep(count);
 667}
 668
 669static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg)
 670{
 671        uint8_t attr = U8((*ptr)++);
 672        uint32_t dst, src;
 673        SDEBUG("   src1: ");
 674        dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
 675        SDEBUG("   src2: ");
 676        src = atom_get_src(ctx, attr, ptr);
 677        if (src != 0) {
 678                ctx->ctx->divmul[0] = dst / src;
 679                ctx->ctx->divmul[1] = dst % src;
 680        } else {
 681                ctx->ctx->divmul[0] = 0;
 682                ctx->ctx->divmul[1] = 0;
 683        }
 684}
 685
 686static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg)
 687{
 688        /* functionally, a nop */
 689}
 690
 691static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
 692{
 693        int execute = 0, target = U16(*ptr);
 694        unsigned long cjiffies;
 695
 696        (*ptr) += 2;
 697        switch (arg) {
 698        case ATOM_COND_ABOVE:
 699                execute = ctx->ctx->cs_above;
 700                break;
 701        case ATOM_COND_ABOVEOREQUAL:
 702                execute = ctx->ctx->cs_above || ctx->ctx->cs_equal;
 703                break;
 704        case ATOM_COND_ALWAYS:
 705                execute = 1;
 706                break;
 707        case ATOM_COND_BELOW:
 708                execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal);
 709                break;
 710        case ATOM_COND_BELOWOREQUAL:
 711                execute = !ctx->ctx->cs_above;
 712                break;
 713        case ATOM_COND_EQUAL:
 714                execute = ctx->ctx->cs_equal;
 715                break;
 716        case ATOM_COND_NOTEQUAL:
 717                execute = !ctx->ctx->cs_equal;
 718                break;
 719        }
 720        if (arg != ATOM_COND_ALWAYS)
 721                SDEBUG("   taken: %s\n", execute ? "yes" : "no");
 722        SDEBUG("   target: 0x%04X\n", target);
 723        if (execute) {
 724                if (ctx->last_jump == (ctx->start + target)) {
 725                        cjiffies = jiffies;
 726                        if (time_after(cjiffies, ctx->last_jump_jiffies)) {
 727                                cjiffies -= ctx->last_jump_jiffies;
 728                                if ((jiffies_to_msecs(cjiffies) > 5000)) {
 729                                        DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n");
 730                                        ctx->abort = true;
 731                                }
 732                        } else {
 733                                /* jiffies wrap around we will just wait a little longer */
 734                                ctx->last_jump_jiffies = jiffies;
 735                        }
 736                } else {
 737                        ctx->last_jump = ctx->start + target;
 738                        ctx->last_jump_jiffies = jiffies;
 739                }
 740                *ptr = ctx->start + target;
 741        }
 742}
 743
 744static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg)
 745{
 746        uint8_t attr = U8((*ptr)++);
 747        uint32_t dst, mask, src, saved;
 748        int dptr = *ptr;
 749        SDEBUG("   dst: ");
 750        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 751        mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
 752        SDEBUG("   mask: 0x%08x", mask);
 753        SDEBUG("   src: ");
 754        src = atom_get_src(ctx, attr, ptr);
 755        dst &= mask;
 756        dst |= src;
 757        SDEBUG("   dst: ");
 758        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 759}
 760
 761static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg)
 762{
 763        uint8_t attr = U8((*ptr)++);
 764        uint32_t src, saved;
 765        int dptr = *ptr;
 766        if (((attr >> 3) & 7) != ATOM_SRC_DWORD)
 767                atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
 768        else {
 769                atom_skip_dst(ctx, arg, attr, ptr);
 770                saved = 0xCDCDCDCD;
 771        }
 772        SDEBUG("   src: ");
 773        src = atom_get_src(ctx, attr, ptr);
 774        SDEBUG("   dst: ");
 775        atom_put_dst(ctx, arg, attr, &dptr, src, saved);
 776}
 777
 778static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg)
 779{
 780        uint8_t attr = U8((*ptr)++);
 781        uint32_t dst, src;
 782        SDEBUG("   src1: ");
 783        dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
 784        SDEBUG("   src2: ");
 785        src = atom_get_src(ctx, attr, ptr);
 786        ctx->ctx->divmul[0] = dst * src;
 787}
 788
 789static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg)
 790{
 791        /* nothing */
 792}
 793
 794static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg)
 795{
 796        uint8_t attr = U8((*ptr)++);
 797        uint32_t dst, src, saved;
 798        int dptr = *ptr;
 799        SDEBUG("   dst: ");
 800        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 801        SDEBUG("   src: ");
 802        src = atom_get_src(ctx, attr, ptr);
 803        dst |= src;
 804        SDEBUG("   dst: ");
 805        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 806}
 807
 808static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg)
 809{
 810        uint8_t val = U8((*ptr)++);
 811        SDEBUG("POST card output: 0x%02X\n", val);
 812}
 813
 814static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg)
 815{
 816        pr_info("unimplemented!\n");
 817}
 818
 819static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg)
 820{
 821        pr_info("unimplemented!\n");
 822}
 823
 824static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg)
 825{
 826        pr_info("unimplemented!\n");
 827}
 828
 829static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg)
 830{
 831        int idx = U8(*ptr);
 832        (*ptr)++;
 833        SDEBUG("   block: %d\n", idx);
 834        if (!idx)
 835                ctx->ctx->data_block = 0;
 836        else if (idx == 255)
 837                ctx->ctx->data_block = ctx->start;
 838        else
 839                ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx);
 840        SDEBUG("   base: 0x%04X\n", ctx->ctx->data_block);
 841}
 842
 843static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg)
 844{
 845        uint8_t attr = U8((*ptr)++);
 846        SDEBUG("   fb_base: ");
 847        ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr);
 848}
 849
 850static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg)
 851{
 852        int port;
 853        switch (arg) {
 854        case ATOM_PORT_ATI:
 855                port = U16(*ptr);
 856                if (port < ATOM_IO_NAMES_CNT)
 857                        SDEBUG("   port: %d (%s)\n", port, atom_io_names[port]);
 858                else
 859                        SDEBUG("   port: %d\n", port);
 860                if (!port)
 861                        ctx->ctx->io_mode = ATOM_IO_MM;
 862                else
 863                        ctx->ctx->io_mode = ATOM_IO_IIO | port;
 864                (*ptr) += 2;
 865                break;
 866        case ATOM_PORT_PCI:
 867                ctx->ctx->io_mode = ATOM_IO_PCI;
 868                (*ptr)++;
 869                break;
 870        case ATOM_PORT_SYSIO:
 871                ctx->ctx->io_mode = ATOM_IO_SYSIO;
 872                (*ptr)++;
 873                break;
 874        }
 875}
 876
 877static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg)
 878{
 879        ctx->ctx->reg_block = U16(*ptr);
 880        (*ptr) += 2;
 881        SDEBUG("   base: 0x%04X\n", ctx->ctx->reg_block);
 882}
 883
 884static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg)
 885{
 886        uint8_t attr = U8((*ptr)++), shift;
 887        uint32_t saved, dst;
 888        int dptr = *ptr;
 889        attr &= 0x38;
 890        attr |= atom_def_dst[attr >> 3] << 6;
 891        SDEBUG("   dst: ");
 892        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 893        shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
 894        SDEBUG("   shift: %d\n", shift);
 895        dst <<= shift;
 896        SDEBUG("   dst: ");
 897        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 898}
 899
 900static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg)
 901{
 902        uint8_t attr = U8((*ptr)++), shift;
 903        uint32_t saved, dst;
 904        int dptr = *ptr;
 905        attr &= 0x38;
 906        attr |= atom_def_dst[attr >> 3] << 6;
 907        SDEBUG("   dst: ");
 908        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 909        shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
 910        SDEBUG("   shift: %d\n", shift);
 911        dst >>= shift;
 912        SDEBUG("   dst: ");
 913        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 914}
 915
 916static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
 917{
 918        uint8_t attr = U8((*ptr)++), shift;
 919        uint32_t saved, dst;
 920        int dptr = *ptr;
 921        uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
 922        SDEBUG("   dst: ");
 923        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 924        /* op needs to full dst value */
 925        dst = saved;
 926        shift = atom_get_src(ctx, attr, ptr);
 927        SDEBUG("   shift: %d\n", shift);
 928        dst <<= shift;
 929        dst &= atom_arg_mask[dst_align];
 930        dst >>= atom_arg_shift[dst_align];
 931        SDEBUG("   dst: ");
 932        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 933}
 934
 935static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
 936{
 937        uint8_t attr = U8((*ptr)++), shift;
 938        uint32_t saved, dst;
 939        int dptr = *ptr;
 940        uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
 941        SDEBUG("   dst: ");
 942        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 943        /* op needs to full dst value */
 944        dst = saved;
 945        shift = atom_get_src(ctx, attr, ptr);
 946        SDEBUG("   shift: %d\n", shift);
 947        dst >>= shift;
 948        dst &= atom_arg_mask[dst_align];
 949        dst >>= atom_arg_shift[dst_align];
 950        SDEBUG("   dst: ");
 951        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 952}
 953
 954static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg)
 955{
 956        uint8_t attr = U8((*ptr)++);
 957        uint32_t dst, src, saved;
 958        int dptr = *ptr;
 959        SDEBUG("   dst: ");
 960        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 961        SDEBUG("   src: ");
 962        src = atom_get_src(ctx, attr, ptr);
 963        dst -= src;
 964        SDEBUG("   dst: ");
 965        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
 966}
 967
 968static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg)
 969{
 970        uint8_t attr = U8((*ptr)++);
 971        uint32_t src, val, target;
 972        SDEBUG("   switch: ");
 973        src = atom_get_src(ctx, attr, ptr);
 974        while (U16(*ptr) != ATOM_CASE_END)
 975                if (U8(*ptr) == ATOM_CASE_MAGIC) {
 976                        (*ptr)++;
 977                        SDEBUG("   case: ");
 978                        val =
 979                            atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM,
 980                                         ptr);
 981                        target = U16(*ptr);
 982                        if (val == src) {
 983                                SDEBUG("   target: %04X\n", target);
 984                                *ptr = ctx->start + target;
 985                                return;
 986                        }
 987                        (*ptr) += 2;
 988                } else {
 989                        pr_info("Bad case\n");
 990                        return;
 991                }
 992        (*ptr) += 2;
 993}
 994
 995static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg)
 996{
 997        uint8_t attr = U8((*ptr)++);
 998        uint32_t dst, src;
 999        SDEBUG("   src1: ");
1000        dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
1001        SDEBUG("   src2: ");
1002        src = atom_get_src(ctx, attr, ptr);
1003        ctx->ctx->cs_equal = ((dst & src) == 0);
1004        SDEBUG("   result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE");
1005}
1006
1007static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg)
1008{
1009        uint8_t attr = U8((*ptr)++);
1010        uint32_t dst, src, saved;
1011        int dptr = *ptr;
1012        SDEBUG("   dst: ");
1013        dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
1014        SDEBUG("   src: ");
1015        src = atom_get_src(ctx, attr, ptr);
1016        dst ^= src;
1017        SDEBUG("   dst: ");
1018        atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
1019}
1020
1021static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg)
1022{
1023        pr_info("unimplemented!\n");
1024}
1025
1026static struct {
1027        void (*func) (atom_exec_context *, int *, int);
1028        int arg;
1029} opcode_table[ATOM_OP_CNT] = {
1030        {
1031        NULL, 0}, {
1032        atom_op_move, ATOM_ARG_REG}, {
1033        atom_op_move, ATOM_ARG_PS}, {
1034        atom_op_move, ATOM_ARG_WS}, {
1035        atom_op_move, ATOM_ARG_FB}, {
1036        atom_op_move, ATOM_ARG_PLL}, {
1037        atom_op_move, ATOM_ARG_MC}, {
1038        atom_op_and, ATOM_ARG_REG}, {
1039        atom_op_and, ATOM_ARG_PS}, {
1040        atom_op_and, ATOM_ARG_WS}, {
1041        atom_op_and, ATOM_ARG_FB}, {
1042        atom_op_and, ATOM_ARG_PLL}, {
1043        atom_op_and, ATOM_ARG_MC}, {
1044        atom_op_or, ATOM_ARG_REG}, {
1045        atom_op_or, ATOM_ARG_PS}, {
1046        atom_op_or, ATOM_ARG_WS}, {
1047        atom_op_or, ATOM_ARG_FB}, {
1048        atom_op_or, ATOM_ARG_PLL}, {
1049        atom_op_or, ATOM_ARG_MC}, {
1050        atom_op_shift_left, ATOM_ARG_REG}, {
1051        atom_op_shift_left, ATOM_ARG_PS}, {
1052        atom_op_shift_left, ATOM_ARG_WS}, {
1053        atom_op_shift_left, ATOM_ARG_FB}, {
1054        atom_op_shift_left, ATOM_ARG_PLL}, {
1055        atom_op_shift_left, ATOM_ARG_MC}, {
1056        atom_op_shift_right, ATOM_ARG_REG}, {
1057        atom_op_shift_right, ATOM_ARG_PS}, {
1058        atom_op_shift_right, ATOM_ARG_WS}, {
1059        atom_op_shift_right, ATOM_ARG_FB}, {
1060        atom_op_shift_right, ATOM_ARG_PLL}, {
1061        atom_op_shift_right, ATOM_ARG_MC}, {
1062        atom_op_mul, ATOM_ARG_REG}, {
1063        atom_op_mul, ATOM_ARG_PS}, {
1064        atom_op_mul, ATOM_ARG_WS}, {
1065        atom_op_mul, ATOM_ARG_FB}, {
1066        atom_op_mul, ATOM_ARG_PLL}, {
1067        atom_op_mul, ATOM_ARG_MC}, {
1068        atom_op_div, ATOM_ARG_REG}, {
1069        atom_op_div, ATOM_ARG_PS}, {
1070        atom_op_div, ATOM_ARG_WS}, {
1071        atom_op_div, ATOM_ARG_FB}, {
1072        atom_op_div, ATOM_ARG_PLL}, {
1073        atom_op_div, ATOM_ARG_MC}, {
1074        atom_op_add, ATOM_ARG_REG}, {
1075        atom_op_add, ATOM_ARG_PS}, {
1076        atom_op_add, ATOM_ARG_WS}, {
1077        atom_op_add, ATOM_ARG_FB}, {
1078        atom_op_add, ATOM_ARG_PLL}, {
1079        atom_op_add, ATOM_ARG_MC}, {
1080        atom_op_sub, ATOM_ARG_REG}, {
1081        atom_op_sub, ATOM_ARG_PS}, {
1082        atom_op_sub, ATOM_ARG_WS}, {
1083        atom_op_sub, ATOM_ARG_FB}, {
1084        atom_op_sub, ATOM_ARG_PLL}, {
1085        atom_op_sub, ATOM_ARG_MC}, {
1086        atom_op_setport, ATOM_PORT_ATI}, {
1087        atom_op_setport, ATOM_PORT_PCI}, {
1088        atom_op_setport, ATOM_PORT_SYSIO}, {
1089        atom_op_setregblock, 0}, {
1090        atom_op_setfbbase, 0}, {
1091        atom_op_compare, ATOM_ARG_REG}, {
1092        atom_op_compare, ATOM_ARG_PS}, {
1093        atom_op_compare, ATOM_ARG_WS}, {
1094        atom_op_compare, ATOM_ARG_FB}, {
1095        atom_op_compare, ATOM_ARG_PLL}, {
1096        atom_op_compare, ATOM_ARG_MC}, {
1097        atom_op_switch, 0}, {
1098        atom_op_jump, ATOM_COND_ALWAYS}, {
1099        atom_op_jump, ATOM_COND_EQUAL}, {
1100        atom_op_jump, ATOM_COND_BELOW}, {
1101        atom_op_jump, ATOM_COND_ABOVE}, {
1102        atom_op_jump, ATOM_COND_BELOWOREQUAL}, {
1103        atom_op_jump, ATOM_COND_ABOVEOREQUAL}, {
1104        atom_op_jump, ATOM_COND_NOTEQUAL}, {
1105        atom_op_test, ATOM_ARG_REG}, {
1106        atom_op_test, ATOM_ARG_PS}, {
1107        atom_op_test, ATOM_ARG_WS}, {
1108        atom_op_test, ATOM_ARG_FB}, {
1109        atom_op_test, ATOM_ARG_PLL}, {
1110        atom_op_test, ATOM_ARG_MC}, {
1111        atom_op_delay, ATOM_UNIT_MILLISEC}, {
1112        atom_op_delay, ATOM_UNIT_MICROSEC}, {
1113        atom_op_calltable, 0}, {
1114        atom_op_repeat, 0}, {
1115        atom_op_clear, ATOM_ARG_REG}, {
1116        atom_op_clear, ATOM_ARG_PS}, {
1117        atom_op_clear, ATOM_ARG_WS}, {
1118        atom_op_clear, ATOM_ARG_FB}, {
1119        atom_op_clear, ATOM_ARG_PLL}, {
1120        atom_op_clear, ATOM_ARG_MC}, {
1121        atom_op_nop, 0}, {
1122        atom_op_eot, 0}, {
1123        atom_op_mask, ATOM_ARG_REG}, {
1124        atom_op_mask, ATOM_ARG_PS}, {
1125        atom_op_mask, ATOM_ARG_WS}, {
1126        atom_op_mask, ATOM_ARG_FB}, {
1127        atom_op_mask, ATOM_ARG_PLL}, {
1128        atom_op_mask, ATOM_ARG_MC}, {
1129        atom_op_postcard, 0}, {
1130        atom_op_beep, 0}, {
1131        atom_op_savereg, 0}, {
1132        atom_op_restorereg, 0}, {
1133        atom_op_setdatablock, 0}, {
1134        atom_op_xor, ATOM_ARG_REG}, {
1135        atom_op_xor, ATOM_ARG_PS}, {
1136        atom_op_xor, ATOM_ARG_WS}, {
1137        atom_op_xor, ATOM_ARG_FB}, {
1138        atom_op_xor, ATOM_ARG_PLL}, {
1139        atom_op_xor, ATOM_ARG_MC}, {
1140        atom_op_shl, ATOM_ARG_REG}, {
1141        atom_op_shl, ATOM_ARG_PS}, {
1142        atom_op_shl, ATOM_ARG_WS}, {
1143        atom_op_shl, ATOM_ARG_FB}, {
1144        atom_op_shl, ATOM_ARG_PLL}, {
1145        atom_op_shl, ATOM_ARG_MC}, {
1146        atom_op_shr, ATOM_ARG_REG}, {
1147        atom_op_shr, ATOM_ARG_PS}, {
1148        atom_op_shr, ATOM_ARG_WS}, {
1149        atom_op_shr, ATOM_ARG_FB}, {
1150        atom_op_shr, ATOM_ARG_PLL}, {
1151        atom_op_shr, ATOM_ARG_MC}, {
1152atom_op_debug, 0},};
1153
1154static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params)
1155{
1156        int base = CU16(ctx->cmd_table + 4 + 2 * index);
1157        int len, ws, ps, ptr;
1158        unsigned char op;
1159        atom_exec_context ectx;
1160        int ret = 0;
1161
1162        if (!base)
1163                return -EINVAL;
1164
1165        len = CU16(base + ATOM_CT_SIZE_PTR);
1166        ws = CU8(base + ATOM_CT_WS_PTR);
1167        ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK;
1168        ptr = base + ATOM_CT_CODE_PTR;
1169
1170        SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps);
1171
1172        ectx.ctx = ctx;
1173        ectx.ps_shift = ps / 4;
1174        ectx.start = base;
1175        ectx.ps = params;
1176        ectx.abort = false;
1177        ectx.last_jump = 0;
1178        if (ws)
1179                ectx.ws = kzalloc(4 * ws, GFP_KERNEL);
1180        else
1181                ectx.ws = NULL;
1182
1183        debug_depth++;
1184        while (1) {
1185                op = CU8(ptr++);
1186                if (op < ATOM_OP_NAMES_CNT)
1187                        SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1);
1188                else
1189                        SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1);
1190                if (ectx.abort) {
1191                        DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n",
1192                                base, len, ws, ps, ptr - 1);
1193                        ret = -EINVAL;
1194                        goto free;
1195                }
1196
1197                if (op < ATOM_OP_CNT && op > 0)
1198                        opcode_table[op].func(&ectx, &ptr,
1199                                              opcode_table[op].arg);
1200                else
1201                        break;
1202
1203                if (op == ATOM_OP_EOT)
1204                        break;
1205        }
1206        debug_depth--;
1207        SDEBUG("<<\n");
1208
1209free:
1210        if (ws)
1211                kfree(ectx.ws);
1212        return ret;
1213}
1214
1215int atom_execute_table_scratch_unlocked(struct atom_context *ctx, int index, uint32_t * params)
1216{
1217        int r;
1218
1219        mutex_lock(&ctx->mutex);
1220        /* reset data block */
1221        ctx->data_block = 0;
1222        /* reset reg block */
1223        ctx->reg_block = 0;
1224        /* reset fb window */
1225        ctx->fb_base = 0;
1226        /* reset io mode */
1227        ctx->io_mode = ATOM_IO_MM;
1228        /* reset divmul */
1229        ctx->divmul[0] = 0;
1230        ctx->divmul[1] = 0;
1231        r = atom_execute_table_locked(ctx, index, params);
1232        mutex_unlock(&ctx->mutex);
1233        return r;
1234}
1235
1236int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params)
1237{
1238        int r;
1239        mutex_lock(&ctx->scratch_mutex);
1240        r = atom_execute_table_scratch_unlocked(ctx, index, params);
1241        mutex_unlock(&ctx->scratch_mutex);
1242        return r;
1243}
1244
1245static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 };
1246
1247static void atom_index_iio(struct atom_context *ctx, int base)
1248{
1249        ctx->iio = kzalloc(2 * 256, GFP_KERNEL);
1250        if (!ctx->iio)
1251                return;
1252        while (CU8(base) == ATOM_IIO_START) {
1253                ctx->iio[CU8(base + 1)] = base + 2;
1254                base += 2;
1255                while (CU8(base) != ATOM_IIO_END)
1256                        base += atom_iio_len[CU8(base)];
1257                base += 3;
1258        }
1259}
1260
1261struct atom_context *atom_parse(struct card_info *card, void *bios)
1262{
1263        int base;
1264        struct atom_context *ctx =
1265            kzalloc(sizeof(struct atom_context), GFP_KERNEL);
1266        char *str;
1267        char name[512];
1268        int i;
1269
1270        if (!ctx)
1271                return NULL;
1272
1273        ctx->card = card;
1274        ctx->bios = bios;
1275
1276        if (CU16(0) != ATOM_BIOS_MAGIC) {
1277                pr_info("Invalid BIOS magic\n");
1278                kfree(ctx);
1279                return NULL;
1280        }
1281        if (strncmp
1282            (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC,
1283             strlen(ATOM_ATI_MAGIC))) {
1284                pr_info("Invalid ATI magic\n");
1285                kfree(ctx);
1286                return NULL;
1287        }
1288
1289        base = CU16(ATOM_ROM_TABLE_PTR);
1290        if (strncmp
1291            (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC,
1292             strlen(ATOM_ROM_MAGIC))) {
1293                pr_info("Invalid ATOM magic\n");
1294                kfree(ctx);
1295                return NULL;
1296        }
1297
1298        ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR);
1299        ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR);
1300        atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4);
1301        if (!ctx->iio) {
1302                atom_destroy(ctx);
1303                return NULL;
1304        }
1305
1306        str = CSTR(CU16(base + ATOM_ROM_MSG_PTR));
1307        while (*str && ((*str == '\n') || (*str == '\r')))
1308                str++;
1309        /* name string isn't always 0 terminated */
1310        for (i = 0; i < 511; i++) {
1311                name[i] = str[i];
1312                if (name[i] < '.' || name[i] > 'z') {
1313                        name[i] = 0;
1314                        break;
1315                }
1316        }
1317        pr_info("ATOM BIOS: %s\n", name);
1318
1319        return ctx;
1320}
1321
1322int atom_asic_init(struct atom_context *ctx)
1323{
1324        struct radeon_device *rdev = ctx->card->dev->dev_private;
1325        int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
1326        uint32_t ps[16];
1327        int ret;
1328
1329        memset(ps, 0, 64);
1330
1331        ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
1332        ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR));
1333        if (!ps[0] || !ps[1])
1334                return 1;
1335
1336        if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT))
1337                return 1;
1338        ret = atom_execute_table(ctx, ATOM_CMD_INIT, ps);
1339        if (ret)
1340                return ret;
1341
1342        memset(ps, 0, 64);
1343
1344        if (rdev->family < CHIP_R600) {
1345                if (CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_SPDFANCNTL))
1346                        atom_execute_table(ctx, ATOM_CMD_SPDFANCNTL, ps);
1347        }
1348        return ret;
1349}
1350
1351void atom_destroy(struct atom_context *ctx)
1352{
1353        kfree(ctx->iio);
1354        kfree(ctx);
1355}
1356
1357bool atom_parse_data_header(struct atom_context *ctx, int index,
1358                            uint16_t * size, uint8_t * frev, uint8_t * crev,
1359                            uint16_t * data_start)
1360{
1361        int offset = index * 2 + 4;
1362        int idx = CU16(ctx->data_table + offset);
1363        u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4);
1364
1365        if (!mdt[index])
1366                return false;
1367
1368        if (size)
1369                *size = CU16(idx);
1370        if (frev)
1371                *frev = CU8(idx + 2);
1372        if (crev)
1373                *crev = CU8(idx + 3);
1374        *data_start = idx;
1375        return true;
1376}
1377
1378bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
1379                           uint8_t * crev)
1380{
1381        int offset = index * 2 + 4;
1382        int idx = CU16(ctx->cmd_table + offset);
1383        u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4);
1384
1385        if (!mct[index])
1386                return false;
1387
1388        if (frev)
1389                *frev = CU8(idx + 2);
1390        if (crev)
1391                *crev = CU8(idx + 3);
1392        return true;
1393}
1394
1395int atom_allocate_fb_scratch(struct atom_context *ctx)
1396{
1397        int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
1398        uint16_t data_offset;
1399        int usage_bytes = 0;
1400        struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
1401
1402        if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
1403                firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
1404
1405                DRM_DEBUG("atom firmware requested %08x %dkb\n",
1406                          le32_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware),
1407                          le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb));
1408
1409                usage_bytes = le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb) * 1024;
1410        }
1411        ctx->scratch_size_bytes = 0;
1412        if (usage_bytes == 0)
1413                usage_bytes = 20 * 1024;
1414        /* allocate some scratch memory */
1415        ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
1416        if (!ctx->scratch)
1417                return -ENOMEM;
1418        ctx->scratch_size_bytes = usage_bytes;
1419        return 0;
1420}
1421