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 #include <drm/drm_util.h>
31
32 #define ATOM_DEBUG
33
34 #include "atom.h"
35 #include "atom-names.h"
36 #include "atom-bits.h"
37 #include "amdgpu.h"
38
39 #define ATOM_COND_ABOVE 0
40 #define ATOM_COND_ABOVEOREQUAL 1
41 #define ATOM_COND_ALWAYS 2
42 #define ATOM_COND_BELOW 3
43 #define ATOM_COND_BELOWOREQUAL 4
44 #define ATOM_COND_EQUAL 5
45 #define ATOM_COND_NOTEQUAL 6
46
47 #define ATOM_PORT_ATI 0
48 #define ATOM_PORT_PCI 1
49 #define ATOM_PORT_SYSIO 2
50
51 #define ATOM_UNIT_MICROSEC 0
52 #define ATOM_UNIT_MILLISEC 1
53
54 #define PLL_INDEX 2
55 #define PLL_DATA 3
56
57 typedef struct {
58 struct atom_context *ctx;
59 uint32_t *ps, *ws;
60 int ps_shift;
61 uint16_t start;
62 unsigned last_jump;
63 unsigned long last_jump_jiffies;
64 bool abort;
65 } atom_exec_context;
66
67 int amdgpu_atom_debug = 0;
68 static int amdgpu_atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params);
69 int amdgpu_atom_execute_table(struct atom_context *ctx, int index, uint32_t * params);
70
71 static uint32_t atom_arg_mask[8] =
72 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000,
73 0xFF000000 };
74 static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 };
75
76 static int atom_dst_to_src[8][4] = {
77 /* translate destination alignment field to the source alignment encoding */
78 {0, 0, 0, 0},
79 {1, 2, 3, 0},
80 {1, 2, 3, 0},
81 {1, 2, 3, 0},
82 {4, 5, 6, 7},
83 {4, 5, 6, 7},
84 {4, 5, 6, 7},
85 {4, 5, 6, 7},
86 };
87 static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 };
88
89 static int debug_depth = 0;
90 #ifdef ATOM_DEBUG
debug_print_spaces(int n)91 static void debug_print_spaces(int n)
92 {
93 while (n--)
94 printk(" ");
95 }
96
97 #define DEBUG(...) do if (amdgpu_atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0)
98 #define SDEBUG(...) do if (amdgpu_atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0)
99 #else
100 #define DEBUG(...) do { } while (0)
101 #define SDEBUG(...) do { } while (0)
102 #endif
103
atom_iio_execute(struct atom_context * ctx,int base,uint32_t index,uint32_t data)104 static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
105 uint32_t index, uint32_t data)
106 {
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 ctx->card->ioreg_write(ctx->card, CU16(base + 1), temp);
120 base += 3;
121 break;
122 case ATOM_IIO_CLEAR:
123 temp &=
124 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
125 CU8(base + 2));
126 base += 3;
127 break;
128 case ATOM_IIO_SET:
129 temp |=
130 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base +
131 2);
132 base += 3;
133 break;
134 case ATOM_IIO_MOVE_INDEX:
135 temp &=
136 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
137 CU8(base + 3));
138 temp |=
139 ((index >> CU8(base + 2)) &
140 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
141 3);
142 base += 4;
143 break;
144 case ATOM_IIO_MOVE_DATA:
145 temp &=
146 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
147 CU8(base + 3));
148 temp |=
149 ((data >> CU8(base + 2)) &
150 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
151 3);
152 base += 4;
153 break;
154 case ATOM_IIO_MOVE_ATTR:
155 temp &=
156 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
157 CU8(base + 3));
158 temp |=
159 ((ctx->
160 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 -
161 CU8
162 (base
163 +
164 1))))
165 << CU8(base + 3);
166 base += 4;
167 break;
168 case ATOM_IIO_END:
169 return temp;
170 default:
171 pr_info("Unknown IIO opcode\n");
172 return 0;
173 }
174 }
175
atom_get_src_int(atom_exec_context * ctx,uint8_t attr,int * ptr,uint32_t * saved,int print)176 static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr,
177 int *ptr, uint32_t *saved, int print)
178 {
179 uint32_t idx, val = 0xCDCDCDCD, align, arg;
180 struct atom_context *gctx = ctx->ctx;
181 arg = attr & 7;
182 align = (attr >> 3) & 7;
183 switch (arg) {
184 case ATOM_ARG_REG:
185 idx = U16(*ptr);
186 (*ptr) += 2;
187 if (print)
188 DEBUG("REG[0x%04X]", idx);
189 idx += gctx->reg_block;
190 switch (gctx->io_mode) {
191 case ATOM_IO_MM:
192 val = gctx->card->reg_read(gctx->card, idx);
193 break;
194 case ATOM_IO_PCI:
195 pr_info("PCI registers are not implemented\n");
196 return 0;
197 case ATOM_IO_SYSIO:
198 pr_info("SYSIO registers are not implemented\n");
199 return 0;
200 default:
201 if (!(gctx->io_mode & 0x80)) {
202 pr_info("Bad IO mode\n");
203 return 0;
204 }
205 if (!gctx->iio[gctx->io_mode & 0x7F]) {
206 pr_info("Undefined indirect IO read method %d\n",
207 gctx->io_mode & 0x7F);
208 return 0;
209 }
210 val =
211 atom_iio_execute(gctx,
212 gctx->iio[gctx->io_mode & 0x7F],
213 idx, 0);
214 }
215 break;
216 case ATOM_ARG_PS:
217 idx = U8(*ptr);
218 (*ptr)++;
219 /* get_unaligned_le32 avoids unaligned accesses from atombios
220 * tables, noticed on a DEC Alpha. */
221 val = get_unaligned_le32((u32 *)&ctx->ps[idx]);
222 if (print)
223 DEBUG("PS[0x%02X,0x%04X]", idx, val);
224 break;
225 case ATOM_ARG_WS:
226 idx = U8(*ptr);
227 (*ptr)++;
228 if (print)
229 DEBUG("WS[0x%02X]", idx);
230 switch (idx) {
231 case ATOM_WS_QUOTIENT:
232 val = gctx->divmul[0];
233 break;
234 case ATOM_WS_REMAINDER:
235 val = gctx->divmul[1];
236 break;
237 case ATOM_WS_DATAPTR:
238 val = gctx->data_block;
239 break;
240 case ATOM_WS_SHIFT:
241 val = gctx->shift;
242 break;
243 case ATOM_WS_OR_MASK:
244 val = 1 << gctx->shift;
245 break;
246 case ATOM_WS_AND_MASK:
247 val = ~(1 << gctx->shift);
248 break;
249 case ATOM_WS_FB_WINDOW:
250 val = gctx->fb_base;
251 break;
252 case ATOM_WS_ATTRIBUTES:
253 val = gctx->io_attr;
254 break;
255 case ATOM_WS_REGPTR:
256 val = gctx->reg_block;
257 break;
258 default:
259 val = ctx->ws[idx];
260 }
261 break;
262 case ATOM_ARG_ID:
263 idx = U16(*ptr);
264 (*ptr) += 2;
265 if (print) {
266 if (gctx->data_block)
267 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block);
268 else
269 DEBUG("ID[0x%04X]", idx);
270 }
271 val = U32(idx + gctx->data_block);
272 break;
273 case ATOM_ARG_FB:
274 idx = U8(*ptr);
275 (*ptr)++;
276 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) {
277 DRM_ERROR("ATOM: fb read beyond scratch region: %d vs. %d\n",
278 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes);
279 val = 0;
280 } else
281 val = gctx->scratch[(gctx->fb_base / 4) + idx];
282 if (print)
283 DEBUG("FB[0x%02X]", idx);
284 break;
285 case ATOM_ARG_IMM:
286 switch (align) {
287 case ATOM_SRC_DWORD:
288 val = U32(*ptr);
289 (*ptr) += 4;
290 if (print)
291 DEBUG("IMM 0x%08X\n", val);
292 return val;
293 case ATOM_SRC_WORD0:
294 case ATOM_SRC_WORD8:
295 case ATOM_SRC_WORD16:
296 val = U16(*ptr);
297 (*ptr) += 2;
298 if (print)
299 DEBUG("IMM 0x%04X\n", val);
300 return val;
301 case ATOM_SRC_BYTE0:
302 case ATOM_SRC_BYTE8:
303 case ATOM_SRC_BYTE16:
304 case ATOM_SRC_BYTE24:
305 val = U8(*ptr);
306 (*ptr)++;
307 if (print)
308 DEBUG("IMM 0x%02X\n", val);
309 return val;
310 }
311 return 0;
312 case ATOM_ARG_PLL:
313 idx = U8(*ptr);
314 (*ptr)++;
315 if (print)
316 DEBUG("PLL[0x%02X]", idx);
317 val = gctx->card->pll_read(gctx->card, idx);
318 break;
319 case ATOM_ARG_MC:
320 idx = U8(*ptr);
321 (*ptr)++;
322 if (print)
323 DEBUG("MC[0x%02X]", idx);
324 val = gctx->card->mc_read(gctx->card, idx);
325 break;
326 }
327 if (saved)
328 *saved = val;
329 val &= atom_arg_mask[align];
330 val >>= atom_arg_shift[align];
331 if (print)
332 switch (align) {
333 case ATOM_SRC_DWORD:
334 DEBUG(".[31:0] -> 0x%08X\n", val);
335 break;
336 case ATOM_SRC_WORD0:
337 DEBUG(".[15:0] -> 0x%04X\n", val);
338 break;
339 case ATOM_SRC_WORD8:
340 DEBUG(".[23:8] -> 0x%04X\n", val);
341 break;
342 case ATOM_SRC_WORD16:
343 DEBUG(".[31:16] -> 0x%04X\n", val);
344 break;
345 case ATOM_SRC_BYTE0:
346 DEBUG(".[7:0] -> 0x%02X\n", val);
347 break;
348 case ATOM_SRC_BYTE8:
349 DEBUG(".[15:8] -> 0x%02X\n", val);
350 break;
351 case ATOM_SRC_BYTE16:
352 DEBUG(".[23:16] -> 0x%02X\n", val);
353 break;
354 case ATOM_SRC_BYTE24:
355 DEBUG(".[31:24] -> 0x%02X\n", val);
356 break;
357 }
358 return val;
359 }
360
atom_skip_src_int(atom_exec_context * ctx,uint8_t attr,int * ptr)361 static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr)
362 {
363 uint32_t align = (attr >> 3) & 7, arg = attr & 7;
364 switch (arg) {
365 case ATOM_ARG_REG:
366 case ATOM_ARG_ID:
367 (*ptr) += 2;
368 break;
369 case ATOM_ARG_PLL:
370 case ATOM_ARG_MC:
371 case ATOM_ARG_PS:
372 case ATOM_ARG_WS:
373 case ATOM_ARG_FB:
374 (*ptr)++;
375 break;
376 case ATOM_ARG_IMM:
377 switch (align) {
378 case ATOM_SRC_DWORD:
379 (*ptr) += 4;
380 return;
381 case ATOM_SRC_WORD0:
382 case ATOM_SRC_WORD8:
383 case ATOM_SRC_WORD16:
384 (*ptr) += 2;
385 return;
386 case ATOM_SRC_BYTE0:
387 case ATOM_SRC_BYTE8:
388 case ATOM_SRC_BYTE16:
389 case ATOM_SRC_BYTE24:
390 (*ptr)++;
391 return;
392 }
393 return;
394 }
395 }
396
atom_get_src(atom_exec_context * ctx,uint8_t attr,int * ptr)397 static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr)
398 {
399 return atom_get_src_int(ctx, attr, ptr, NULL, 1);
400 }
401
atom_get_src_direct(atom_exec_context * ctx,uint8_t align,int * ptr)402 static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr)
403 {
404 uint32_t val = 0xCDCDCDCD;
405
406 switch (align) {
407 case ATOM_SRC_DWORD:
408 val = U32(*ptr);
409 (*ptr) += 4;
410 break;
411 case ATOM_SRC_WORD0:
412 case ATOM_SRC_WORD8:
413 case ATOM_SRC_WORD16:
414 val = U16(*ptr);
415 (*ptr) += 2;
416 break;
417 case ATOM_SRC_BYTE0:
418 case ATOM_SRC_BYTE8:
419 case ATOM_SRC_BYTE16:
420 case ATOM_SRC_BYTE24:
421 val = U8(*ptr);
422 (*ptr)++;
423 break;
424 }
425 return val;
426 }
427
atom_get_dst(atom_exec_context * ctx,int arg,uint8_t attr,int * ptr,uint32_t * saved,int print)428 static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr,
429 int *ptr, uint32_t *saved, int print)
430 {
431 return atom_get_src_int(ctx,
432 arg | atom_dst_to_src[(attr >> 3) &
433 7][(attr >> 6) & 3] << 3,
434 ptr, saved, print);
435 }
436
atom_skip_dst(atom_exec_context * ctx,int arg,uint8_t attr,int * ptr)437 static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr)
438 {
439 atom_skip_src_int(ctx,
440 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) &
441 3] << 3, ptr);
442 }
443
atom_put_dst(atom_exec_context * ctx,int arg,uint8_t attr,int * ptr,uint32_t val,uint32_t saved)444 static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr,
445 int *ptr, uint32_t val, uint32_t saved)
446 {
447 uint32_t align =
448 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val =
449 val, idx;
450 struct atom_context *gctx = ctx->ctx;
451 old_val &= atom_arg_mask[align] >> atom_arg_shift[align];
452 val <<= atom_arg_shift[align];
453 val &= atom_arg_mask[align];
454 saved &= ~atom_arg_mask[align];
455 val |= saved;
456 switch (arg) {
457 case ATOM_ARG_REG:
458 idx = U16(*ptr);
459 (*ptr) += 2;
460 DEBUG("REG[0x%04X]", idx);
461 idx += gctx->reg_block;
462 switch (gctx->io_mode) {
463 case ATOM_IO_MM:
464 if (idx == 0)
465 gctx->card->reg_write(gctx->card, idx,
466 val << 2);
467 else
468 gctx->card->reg_write(gctx->card, idx, val);
469 break;
470 case ATOM_IO_PCI:
471 pr_info("PCI registers are not implemented\n");
472 return;
473 case ATOM_IO_SYSIO:
474 pr_info("SYSIO registers are not implemented\n");
475 return;
476 default:
477 if (!(gctx->io_mode & 0x80)) {
478 pr_info("Bad IO mode\n");
479 return;
480 }
481 if (!gctx->iio[gctx->io_mode & 0xFF]) {
482 pr_info("Undefined indirect IO write method %d\n",
483 gctx->io_mode & 0x7F);
484 return;
485 }
486 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF],
487 idx, val);
488 }
489 break;
490 case ATOM_ARG_PS:
491 idx = U8(*ptr);
492 (*ptr)++;
493 DEBUG("PS[0x%02X]", idx);
494 ctx->ps[idx] = cpu_to_le32(val);
495 break;
496 case ATOM_ARG_WS:
497 idx = U8(*ptr);
498 (*ptr)++;
499 DEBUG("WS[0x%02X]", idx);
500 switch (idx) {
501 case ATOM_WS_QUOTIENT:
502 gctx->divmul[0] = val;
503 break;
504 case ATOM_WS_REMAINDER:
505 gctx->divmul[1] = val;
506 break;
507 case ATOM_WS_DATAPTR:
508 gctx->data_block = val;
509 break;
510 case ATOM_WS_SHIFT:
511 gctx->shift = val;
512 break;
513 case ATOM_WS_OR_MASK:
514 case ATOM_WS_AND_MASK:
515 break;
516 case ATOM_WS_FB_WINDOW:
517 gctx->fb_base = val;
518 break;
519 case ATOM_WS_ATTRIBUTES:
520 gctx->io_attr = val;
521 break;
522 case ATOM_WS_REGPTR:
523 gctx->reg_block = val;
524 break;
525 default:
526 ctx->ws[idx] = val;
527 }
528 break;
529 case ATOM_ARG_FB:
530 idx = U8(*ptr);
531 (*ptr)++;
532 if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) {
533 DRM_ERROR("ATOM: fb write beyond scratch region: %d vs. %d\n",
534 gctx->fb_base + (idx * 4), gctx->scratch_size_bytes);
535 } else
536 gctx->scratch[(gctx->fb_base / 4) + idx] = val;
537 DEBUG("FB[0x%02X]", idx);
538 break;
539 case ATOM_ARG_PLL:
540 idx = U8(*ptr);
541 (*ptr)++;
542 DEBUG("PLL[0x%02X]", idx);
543 gctx->card->pll_write(gctx->card, idx, val);
544 break;
545 case ATOM_ARG_MC:
546 idx = U8(*ptr);
547 (*ptr)++;
548 DEBUG("MC[0x%02X]", idx);
549 gctx->card->mc_write(gctx->card, idx, val);
550 return;
551 }
552 switch (align) {
553 case ATOM_SRC_DWORD:
554 DEBUG(".[31:0] <- 0x%08X\n", old_val);
555 break;
556 case ATOM_SRC_WORD0:
557 DEBUG(".[15:0] <- 0x%04X\n", old_val);
558 break;
559 case ATOM_SRC_WORD8:
560 DEBUG(".[23:8] <- 0x%04X\n", old_val);
561 break;
562 case ATOM_SRC_WORD16:
563 DEBUG(".[31:16] <- 0x%04X\n", old_val);
564 break;
565 case ATOM_SRC_BYTE0:
566 DEBUG(".[7:0] <- 0x%02X\n", old_val);
567 break;
568 case ATOM_SRC_BYTE8:
569 DEBUG(".[15:8] <- 0x%02X\n", old_val);
570 break;
571 case ATOM_SRC_BYTE16:
572 DEBUG(".[23:16] <- 0x%02X\n", old_val);
573 break;
574 case ATOM_SRC_BYTE24:
575 DEBUG(".[31:24] <- 0x%02X\n", old_val);
576 break;
577 }
578 }
579
atom_op_add(atom_exec_context * ctx,int * ptr,int arg)580 static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg)
581 {
582 uint8_t attr = U8((*ptr)++);
583 uint32_t dst, src, saved;
584 int dptr = *ptr;
585 SDEBUG(" dst: ");
586 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
587 SDEBUG(" src: ");
588 src = atom_get_src(ctx, attr, ptr);
589 dst += src;
590 SDEBUG(" dst: ");
591 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
592 }
593
atom_op_and(atom_exec_context * ctx,int * ptr,int arg)594 static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg)
595 {
596 uint8_t attr = U8((*ptr)++);
597 uint32_t dst, src, saved;
598 int dptr = *ptr;
599 SDEBUG(" dst: ");
600 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
601 SDEBUG(" src: ");
602 src = atom_get_src(ctx, attr, ptr);
603 dst &= src;
604 SDEBUG(" dst: ");
605 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
606 }
607
atom_op_beep(atom_exec_context * ctx,int * ptr,int arg)608 static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg)
609 {
610 printk("ATOM BIOS beeped!\n");
611 }
612
atom_op_calltable(atom_exec_context * ctx,int * ptr,int arg)613 static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg)
614 {
615 int idx = U8((*ptr)++);
616 int r = 0;
617
618 if (idx < ATOM_TABLE_NAMES_CNT)
619 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]);
620 else
621 SDEBUG(" table: %d\n", idx);
622 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx))
623 r = amdgpu_atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift);
624 if (r) {
625 ctx->abort = true;
626 }
627 }
628
atom_op_clear(atom_exec_context * ctx,int * ptr,int arg)629 static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg)
630 {
631 uint8_t attr = U8((*ptr)++);
632 uint32_t saved;
633 int dptr = *ptr;
634 attr &= 0x38;
635 attr |= atom_def_dst[attr >> 3] << 6;
636 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
637 SDEBUG(" dst: ");
638 atom_put_dst(ctx, arg, attr, &dptr, 0, saved);
639 }
640
atom_op_compare(atom_exec_context * ctx,int * ptr,int arg)641 static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg)
642 {
643 uint8_t attr = U8((*ptr)++);
644 uint32_t dst, src;
645 SDEBUG(" src1: ");
646 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
647 SDEBUG(" src2: ");
648 src = atom_get_src(ctx, attr, ptr);
649 ctx->ctx->cs_equal = (dst == src);
650 ctx->ctx->cs_above = (dst > src);
651 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE",
652 ctx->ctx->cs_above ? "GT" : "LE");
653 }
654
atom_op_delay(atom_exec_context * ctx,int * ptr,int arg)655 static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
656 {
657 unsigned count = U8((*ptr)++);
658 SDEBUG(" count: %d\n", count);
659 if (arg == ATOM_UNIT_MICROSEC)
660 udelay(count);
661 else if (!drm_can_sleep())
662 mdelay(count);
663 else
664 msleep(count);
665 }
666
atom_op_div(atom_exec_context * ctx,int * ptr,int arg)667 static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg)
668 {
669 uint8_t attr = U8((*ptr)++);
670 uint32_t dst, src;
671 SDEBUG(" src1: ");
672 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
673 SDEBUG(" src2: ");
674 src = atom_get_src(ctx, attr, ptr);
675 if (src != 0) {
676 ctx->ctx->divmul[0] = dst / src;
677 ctx->ctx->divmul[1] = dst % src;
678 } else {
679 ctx->ctx->divmul[0] = 0;
680 ctx->ctx->divmul[1] = 0;
681 }
682 }
683
atom_op_div32(atom_exec_context * ctx,int * ptr,int arg)684 static void atom_op_div32(atom_exec_context *ctx, int *ptr, int arg)
685 {
686 uint64_t val64;
687 uint8_t attr = U8((*ptr)++);
688 uint32_t dst, src;
689 SDEBUG(" src1: ");
690 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
691 SDEBUG(" src2: ");
692 src = atom_get_src(ctx, attr, ptr);
693 if (src != 0) {
694 val64 = dst;
695 val64 |= ((uint64_t)ctx->ctx->divmul[1]) << 32;
696 do_div(val64, src);
697 ctx->ctx->divmul[0] = lower_32_bits(val64);
698 ctx->ctx->divmul[1] = upper_32_bits(val64);
699 } else {
700 ctx->ctx->divmul[0] = 0;
701 ctx->ctx->divmul[1] = 0;
702 }
703 }
704
atom_op_eot(atom_exec_context * ctx,int * ptr,int arg)705 static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg)
706 {
707 /* functionally, a nop */
708 }
709
atom_op_jump(atom_exec_context * ctx,int * ptr,int arg)710 static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
711 {
712 int execute = 0, target = U16(*ptr);
713 unsigned long cjiffies;
714
715 (*ptr) += 2;
716 switch (arg) {
717 case ATOM_COND_ABOVE:
718 execute = ctx->ctx->cs_above;
719 break;
720 case ATOM_COND_ABOVEOREQUAL:
721 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal;
722 break;
723 case ATOM_COND_ALWAYS:
724 execute = 1;
725 break;
726 case ATOM_COND_BELOW:
727 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal);
728 break;
729 case ATOM_COND_BELOWOREQUAL:
730 execute = !ctx->ctx->cs_above;
731 break;
732 case ATOM_COND_EQUAL:
733 execute = ctx->ctx->cs_equal;
734 break;
735 case ATOM_COND_NOTEQUAL:
736 execute = !ctx->ctx->cs_equal;
737 break;
738 }
739 if (arg != ATOM_COND_ALWAYS)
740 SDEBUG(" taken: %s\n", execute ? "yes" : "no");
741 SDEBUG(" target: 0x%04X\n", target);
742 if (execute) {
743 if (ctx->last_jump == (ctx->start + target)) {
744 cjiffies = jiffies;
745 if (time_after(cjiffies, ctx->last_jump_jiffies)) {
746 cjiffies -= ctx->last_jump_jiffies;
747 if ((jiffies_to_msecs(cjiffies) > 5000)) {
748 DRM_ERROR("atombios stuck in loop for more than 5secs aborting\n");
749 ctx->abort = true;
750 }
751 } else {
752 /* jiffies wrap around we will just wait a little longer */
753 ctx->last_jump_jiffies = jiffies;
754 }
755 } else {
756 ctx->last_jump = ctx->start + target;
757 ctx->last_jump_jiffies = jiffies;
758 }
759 *ptr = ctx->start + target;
760 }
761 }
762
atom_op_mask(atom_exec_context * ctx,int * ptr,int arg)763 static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg)
764 {
765 uint8_t attr = U8((*ptr)++);
766 uint32_t dst, mask, src, saved;
767 int dptr = *ptr;
768 SDEBUG(" dst: ");
769 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
770 mask = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
771 SDEBUG(" mask: 0x%08x", mask);
772 SDEBUG(" src: ");
773 src = atom_get_src(ctx, attr, ptr);
774 dst &= mask;
775 dst |= src;
776 SDEBUG(" dst: ");
777 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
778 }
779
atom_op_move(atom_exec_context * ctx,int * ptr,int arg)780 static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg)
781 {
782 uint8_t attr = U8((*ptr)++);
783 uint32_t src, saved;
784 int dptr = *ptr;
785 if (((attr >> 3) & 7) != ATOM_SRC_DWORD)
786 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
787 else {
788 atom_skip_dst(ctx, arg, attr, ptr);
789 saved = 0xCDCDCDCD;
790 }
791 SDEBUG(" src: ");
792 src = atom_get_src(ctx, attr, ptr);
793 SDEBUG(" dst: ");
794 atom_put_dst(ctx, arg, attr, &dptr, src, saved);
795 }
796
atom_op_mul(atom_exec_context * ctx,int * ptr,int arg)797 static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg)
798 {
799 uint8_t attr = U8((*ptr)++);
800 uint32_t dst, src;
801 SDEBUG(" src1: ");
802 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
803 SDEBUG(" src2: ");
804 src = atom_get_src(ctx, attr, ptr);
805 ctx->ctx->divmul[0] = dst * src;
806 }
807
atom_op_mul32(atom_exec_context * ctx,int * ptr,int arg)808 static void atom_op_mul32(atom_exec_context *ctx, int *ptr, int arg)
809 {
810 uint64_t val64;
811 uint8_t attr = U8((*ptr)++);
812 uint32_t dst, src;
813 SDEBUG(" src1: ");
814 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
815 SDEBUG(" src2: ");
816 src = atom_get_src(ctx, attr, ptr);
817 val64 = (uint64_t)dst * (uint64_t)src;
818 ctx->ctx->divmul[0] = lower_32_bits(val64);
819 ctx->ctx->divmul[1] = upper_32_bits(val64);
820 }
821
atom_op_nop(atom_exec_context * ctx,int * ptr,int arg)822 static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg)
823 {
824 /* nothing */
825 }
826
atom_op_or(atom_exec_context * ctx,int * ptr,int arg)827 static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg)
828 {
829 uint8_t attr = U8((*ptr)++);
830 uint32_t dst, src, saved;
831 int dptr = *ptr;
832 SDEBUG(" dst: ");
833 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
834 SDEBUG(" src: ");
835 src = atom_get_src(ctx, attr, ptr);
836 dst |= src;
837 SDEBUG(" dst: ");
838 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
839 }
840
atom_op_postcard(atom_exec_context * ctx,int * ptr,int arg)841 static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg)
842 {
843 uint8_t val = U8((*ptr)++);
844 SDEBUG("POST card output: 0x%02X\n", val);
845 }
846
atom_op_repeat(atom_exec_context * ctx,int * ptr,int arg)847 static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg)
848 {
849 pr_info("unimplemented!\n");
850 }
851
atom_op_restorereg(atom_exec_context * ctx,int * ptr,int arg)852 static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg)
853 {
854 pr_info("unimplemented!\n");
855 }
856
atom_op_savereg(atom_exec_context * ctx,int * ptr,int arg)857 static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg)
858 {
859 pr_info("unimplemented!\n");
860 }
861
atom_op_setdatablock(atom_exec_context * ctx,int * ptr,int arg)862 static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg)
863 {
864 int idx = U8(*ptr);
865 (*ptr)++;
866 SDEBUG(" block: %d\n", idx);
867 if (!idx)
868 ctx->ctx->data_block = 0;
869 else if (idx == 255)
870 ctx->ctx->data_block = ctx->start;
871 else
872 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx);
873 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block);
874 }
875
atom_op_setfbbase(atom_exec_context * ctx,int * ptr,int arg)876 static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg)
877 {
878 uint8_t attr = U8((*ptr)++);
879 SDEBUG(" fb_base: ");
880 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr);
881 }
882
atom_op_setport(atom_exec_context * ctx,int * ptr,int arg)883 static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg)
884 {
885 int port;
886 switch (arg) {
887 case ATOM_PORT_ATI:
888 port = U16(*ptr);
889 if (port < ATOM_IO_NAMES_CNT)
890 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]);
891 else
892 SDEBUG(" port: %d\n", port);
893 if (!port)
894 ctx->ctx->io_mode = ATOM_IO_MM;
895 else
896 ctx->ctx->io_mode = ATOM_IO_IIO | port;
897 (*ptr) += 2;
898 break;
899 case ATOM_PORT_PCI:
900 ctx->ctx->io_mode = ATOM_IO_PCI;
901 (*ptr)++;
902 break;
903 case ATOM_PORT_SYSIO:
904 ctx->ctx->io_mode = ATOM_IO_SYSIO;
905 (*ptr)++;
906 break;
907 }
908 }
909
atom_op_setregblock(atom_exec_context * ctx,int * ptr,int arg)910 static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg)
911 {
912 ctx->ctx->reg_block = U16(*ptr);
913 (*ptr) += 2;
914 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block);
915 }
916
atom_op_shift_left(atom_exec_context * ctx,int * ptr,int arg)917 static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg)
918 {
919 uint8_t attr = U8((*ptr)++), shift;
920 uint32_t saved, dst;
921 int dptr = *ptr;
922 attr &= 0x38;
923 attr |= atom_def_dst[attr >> 3] << 6;
924 SDEBUG(" dst: ");
925 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
926 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
927 SDEBUG(" shift: %d\n", shift);
928 dst <<= shift;
929 SDEBUG(" dst: ");
930 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
931 }
932
atom_op_shift_right(atom_exec_context * ctx,int * ptr,int arg)933 static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg)
934 {
935 uint8_t attr = U8((*ptr)++), shift;
936 uint32_t saved, dst;
937 int dptr = *ptr;
938 attr &= 0x38;
939 attr |= atom_def_dst[attr >> 3] << 6;
940 SDEBUG(" dst: ");
941 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
942 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
943 SDEBUG(" shift: %d\n", shift);
944 dst >>= shift;
945 SDEBUG(" dst: ");
946 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
947 }
948
atom_op_shl(atom_exec_context * ctx,int * ptr,int arg)949 static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
950 {
951 uint8_t attr = U8((*ptr)++), shift;
952 uint32_t saved, dst;
953 int dptr = *ptr;
954 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
955 SDEBUG(" dst: ");
956 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
957 /* op needs to full dst value */
958 dst = saved;
959 shift = atom_get_src(ctx, attr, ptr);
960 SDEBUG(" shift: %d\n", shift);
961 dst <<= shift;
962 dst &= atom_arg_mask[dst_align];
963 dst >>= atom_arg_shift[dst_align];
964 SDEBUG(" dst: ");
965 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
966 }
967
atom_op_shr(atom_exec_context * ctx,int * ptr,int arg)968 static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
969 {
970 uint8_t attr = U8((*ptr)++), shift;
971 uint32_t saved, dst;
972 int dptr = *ptr;
973 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
974 SDEBUG(" dst: ");
975 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
976 /* op needs to full dst value */
977 dst = saved;
978 shift = atom_get_src(ctx, attr, ptr);
979 SDEBUG(" shift: %d\n", shift);
980 dst >>= shift;
981 dst &= atom_arg_mask[dst_align];
982 dst >>= atom_arg_shift[dst_align];
983 SDEBUG(" dst: ");
984 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
985 }
986
atom_op_sub(atom_exec_context * ctx,int * ptr,int arg)987 static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg)
988 {
989 uint8_t attr = U8((*ptr)++);
990 uint32_t dst, src, saved;
991 int dptr = *ptr;
992 SDEBUG(" dst: ");
993 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
994 SDEBUG(" src: ");
995 src = atom_get_src(ctx, attr, ptr);
996 dst -= src;
997 SDEBUG(" dst: ");
998 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
999 }
1000
atom_op_switch(atom_exec_context * ctx,int * ptr,int arg)1001 static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg)
1002 {
1003 uint8_t attr = U8((*ptr)++);
1004 uint32_t src, val, target;
1005 SDEBUG(" switch: ");
1006 src = atom_get_src(ctx, attr, ptr);
1007 while (U16(*ptr) != ATOM_CASE_END)
1008 if (U8(*ptr) == ATOM_CASE_MAGIC) {
1009 (*ptr)++;
1010 SDEBUG(" case: ");
1011 val =
1012 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM,
1013 ptr);
1014 target = U16(*ptr);
1015 if (val == src) {
1016 SDEBUG(" target: %04X\n", target);
1017 *ptr = ctx->start + target;
1018 return;
1019 }
1020 (*ptr) += 2;
1021 } else {
1022 pr_info("Bad case\n");
1023 return;
1024 }
1025 (*ptr) += 2;
1026 }
1027
atom_op_test(atom_exec_context * ctx,int * ptr,int arg)1028 static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg)
1029 {
1030 uint8_t attr = U8((*ptr)++);
1031 uint32_t dst, src;
1032 SDEBUG(" src1: ");
1033 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
1034 SDEBUG(" src2: ");
1035 src = atom_get_src(ctx, attr, ptr);
1036 ctx->ctx->cs_equal = ((dst & src) == 0);
1037 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE");
1038 }
1039
atom_op_xor(atom_exec_context * ctx,int * ptr,int arg)1040 static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg)
1041 {
1042 uint8_t attr = U8((*ptr)++);
1043 uint32_t dst, src, saved;
1044 int dptr = *ptr;
1045 SDEBUG(" dst: ");
1046 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
1047 SDEBUG(" src: ");
1048 src = atom_get_src(ctx, attr, ptr);
1049 dst ^= src;
1050 SDEBUG(" dst: ");
1051 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
1052 }
1053
atom_op_debug(atom_exec_context * ctx,int * ptr,int arg)1054 static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg)
1055 {
1056 uint8_t val = U8((*ptr)++);
1057 SDEBUG("DEBUG output: 0x%02X\n", val);
1058 }
1059
atom_op_processds(atom_exec_context * ctx,int * ptr,int arg)1060 static void atom_op_processds(atom_exec_context *ctx, int *ptr, int arg)
1061 {
1062 uint16_t val = U16(*ptr);
1063 (*ptr) += val + 2;
1064 SDEBUG("PROCESSDS output: 0x%02X\n", val);
1065 }
1066
1067 static struct {
1068 void (*func) (atom_exec_context *, int *, int);
1069 int arg;
1070 } opcode_table[ATOM_OP_CNT] = {
1071 {
1072 NULL, 0}, {
1073 atom_op_move, ATOM_ARG_REG}, {
1074 atom_op_move, ATOM_ARG_PS}, {
1075 atom_op_move, ATOM_ARG_WS}, {
1076 atom_op_move, ATOM_ARG_FB}, {
1077 atom_op_move, ATOM_ARG_PLL}, {
1078 atom_op_move, ATOM_ARG_MC}, {
1079 atom_op_and, ATOM_ARG_REG}, {
1080 atom_op_and, ATOM_ARG_PS}, {
1081 atom_op_and, ATOM_ARG_WS}, {
1082 atom_op_and, ATOM_ARG_FB}, {
1083 atom_op_and, ATOM_ARG_PLL}, {
1084 atom_op_and, ATOM_ARG_MC}, {
1085 atom_op_or, ATOM_ARG_REG}, {
1086 atom_op_or, ATOM_ARG_PS}, {
1087 atom_op_or, ATOM_ARG_WS}, {
1088 atom_op_or, ATOM_ARG_FB}, {
1089 atom_op_or, ATOM_ARG_PLL}, {
1090 atom_op_or, ATOM_ARG_MC}, {
1091 atom_op_shift_left, ATOM_ARG_REG}, {
1092 atom_op_shift_left, ATOM_ARG_PS}, {
1093 atom_op_shift_left, ATOM_ARG_WS}, {
1094 atom_op_shift_left, ATOM_ARG_FB}, {
1095 atom_op_shift_left, ATOM_ARG_PLL}, {
1096 atom_op_shift_left, ATOM_ARG_MC}, {
1097 atom_op_shift_right, ATOM_ARG_REG}, {
1098 atom_op_shift_right, ATOM_ARG_PS}, {
1099 atom_op_shift_right, ATOM_ARG_WS}, {
1100 atom_op_shift_right, ATOM_ARG_FB}, {
1101 atom_op_shift_right, ATOM_ARG_PLL}, {
1102 atom_op_shift_right, ATOM_ARG_MC}, {
1103 atom_op_mul, ATOM_ARG_REG}, {
1104 atom_op_mul, ATOM_ARG_PS}, {
1105 atom_op_mul, ATOM_ARG_WS}, {
1106 atom_op_mul, ATOM_ARG_FB}, {
1107 atom_op_mul, ATOM_ARG_PLL}, {
1108 atom_op_mul, ATOM_ARG_MC}, {
1109 atom_op_div, ATOM_ARG_REG}, {
1110 atom_op_div, ATOM_ARG_PS}, {
1111 atom_op_div, ATOM_ARG_WS}, {
1112 atom_op_div, ATOM_ARG_FB}, {
1113 atom_op_div, ATOM_ARG_PLL}, {
1114 atom_op_div, ATOM_ARG_MC}, {
1115 atom_op_add, ATOM_ARG_REG}, {
1116 atom_op_add, ATOM_ARG_PS}, {
1117 atom_op_add, ATOM_ARG_WS}, {
1118 atom_op_add, ATOM_ARG_FB}, {
1119 atom_op_add, ATOM_ARG_PLL}, {
1120 atom_op_add, ATOM_ARG_MC}, {
1121 atom_op_sub, ATOM_ARG_REG}, {
1122 atom_op_sub, ATOM_ARG_PS}, {
1123 atom_op_sub, ATOM_ARG_WS}, {
1124 atom_op_sub, ATOM_ARG_FB}, {
1125 atom_op_sub, ATOM_ARG_PLL}, {
1126 atom_op_sub, ATOM_ARG_MC}, {
1127 atom_op_setport, ATOM_PORT_ATI}, {
1128 atom_op_setport, ATOM_PORT_PCI}, {
1129 atom_op_setport, ATOM_PORT_SYSIO}, {
1130 atom_op_setregblock, 0}, {
1131 atom_op_setfbbase, 0}, {
1132 atom_op_compare, ATOM_ARG_REG}, {
1133 atom_op_compare, ATOM_ARG_PS}, {
1134 atom_op_compare, ATOM_ARG_WS}, {
1135 atom_op_compare, ATOM_ARG_FB}, {
1136 atom_op_compare, ATOM_ARG_PLL}, {
1137 atom_op_compare, ATOM_ARG_MC}, {
1138 atom_op_switch, 0}, {
1139 atom_op_jump, ATOM_COND_ALWAYS}, {
1140 atom_op_jump, ATOM_COND_EQUAL}, {
1141 atom_op_jump, ATOM_COND_BELOW}, {
1142 atom_op_jump, ATOM_COND_ABOVE}, {
1143 atom_op_jump, ATOM_COND_BELOWOREQUAL}, {
1144 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, {
1145 atom_op_jump, ATOM_COND_NOTEQUAL}, {
1146 atom_op_test, ATOM_ARG_REG}, {
1147 atom_op_test, ATOM_ARG_PS}, {
1148 atom_op_test, ATOM_ARG_WS}, {
1149 atom_op_test, ATOM_ARG_FB}, {
1150 atom_op_test, ATOM_ARG_PLL}, {
1151 atom_op_test, ATOM_ARG_MC}, {
1152 atom_op_delay, ATOM_UNIT_MILLISEC}, {
1153 atom_op_delay, ATOM_UNIT_MICROSEC}, {
1154 atom_op_calltable, 0}, {
1155 atom_op_repeat, 0}, {
1156 atom_op_clear, ATOM_ARG_REG}, {
1157 atom_op_clear, ATOM_ARG_PS}, {
1158 atom_op_clear, ATOM_ARG_WS}, {
1159 atom_op_clear, ATOM_ARG_FB}, {
1160 atom_op_clear, ATOM_ARG_PLL}, {
1161 atom_op_clear, ATOM_ARG_MC}, {
1162 atom_op_nop, 0}, {
1163 atom_op_eot, 0}, {
1164 atom_op_mask, ATOM_ARG_REG}, {
1165 atom_op_mask, ATOM_ARG_PS}, {
1166 atom_op_mask, ATOM_ARG_WS}, {
1167 atom_op_mask, ATOM_ARG_FB}, {
1168 atom_op_mask, ATOM_ARG_PLL}, {
1169 atom_op_mask, ATOM_ARG_MC}, {
1170 atom_op_postcard, 0}, {
1171 atom_op_beep, 0}, {
1172 atom_op_savereg, 0}, {
1173 atom_op_restorereg, 0}, {
1174 atom_op_setdatablock, 0}, {
1175 atom_op_xor, ATOM_ARG_REG}, {
1176 atom_op_xor, ATOM_ARG_PS}, {
1177 atom_op_xor, ATOM_ARG_WS}, {
1178 atom_op_xor, ATOM_ARG_FB}, {
1179 atom_op_xor, ATOM_ARG_PLL}, {
1180 atom_op_xor, ATOM_ARG_MC}, {
1181 atom_op_shl, ATOM_ARG_REG}, {
1182 atom_op_shl, ATOM_ARG_PS}, {
1183 atom_op_shl, ATOM_ARG_WS}, {
1184 atom_op_shl, ATOM_ARG_FB}, {
1185 atom_op_shl, ATOM_ARG_PLL}, {
1186 atom_op_shl, ATOM_ARG_MC}, {
1187 atom_op_shr, ATOM_ARG_REG}, {
1188 atom_op_shr, ATOM_ARG_PS}, {
1189 atom_op_shr, ATOM_ARG_WS}, {
1190 atom_op_shr, ATOM_ARG_FB}, {
1191 atom_op_shr, ATOM_ARG_PLL}, {
1192 atom_op_shr, ATOM_ARG_MC}, {
1193 atom_op_debug, 0}, {
1194 atom_op_processds, 0}, {
1195 atom_op_mul32, ATOM_ARG_PS}, {
1196 atom_op_mul32, ATOM_ARG_WS}, {
1197 atom_op_div32, ATOM_ARG_PS}, {
1198 atom_op_div32, ATOM_ARG_WS},
1199 };
1200
amdgpu_atom_execute_table_locked(struct atom_context * ctx,int index,uint32_t * params)1201 static int amdgpu_atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params)
1202 {
1203 int base = CU16(ctx->cmd_table + 4 + 2 * index);
1204 int len, ws, ps, ptr;
1205 unsigned char op;
1206 atom_exec_context ectx;
1207 int ret = 0;
1208
1209 if (!base)
1210 return -EINVAL;
1211
1212 len = CU16(base + ATOM_CT_SIZE_PTR);
1213 ws = CU8(base + ATOM_CT_WS_PTR);
1214 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK;
1215 ptr = base + ATOM_CT_CODE_PTR;
1216
1217 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps);
1218
1219 ectx.ctx = ctx;
1220 ectx.ps_shift = ps / 4;
1221 ectx.start = base;
1222 ectx.ps = params;
1223 ectx.abort = false;
1224 ectx.last_jump = 0;
1225 if (ws)
1226 ectx.ws = kcalloc(4, ws, GFP_KERNEL);
1227 else
1228 ectx.ws = NULL;
1229
1230 debug_depth++;
1231 while (1) {
1232 op = CU8(ptr++);
1233 if (op < ATOM_OP_NAMES_CNT)
1234 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1);
1235 else
1236 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1);
1237 if (ectx.abort) {
1238 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n",
1239 base, len, ws, ps, ptr - 1);
1240 ret = -EINVAL;
1241 goto free;
1242 }
1243
1244 if (op < ATOM_OP_CNT && op > 0)
1245 opcode_table[op].func(&ectx, &ptr,
1246 opcode_table[op].arg);
1247 else
1248 break;
1249
1250 if (op == ATOM_OP_EOT)
1251 break;
1252 }
1253 debug_depth--;
1254 SDEBUG("<<\n");
1255
1256 free:
1257 if (ws)
1258 kfree(ectx.ws);
1259 return ret;
1260 }
1261
amdgpu_atom_execute_table(struct atom_context * ctx,int index,uint32_t * params)1262 int amdgpu_atom_execute_table(struct atom_context *ctx, int index, uint32_t * params)
1263 {
1264 int r;
1265
1266 mutex_lock(&ctx->mutex);
1267 /* reset data block */
1268 ctx->data_block = 0;
1269 /* reset reg block */
1270 ctx->reg_block = 0;
1271 /* reset fb window */
1272 ctx->fb_base = 0;
1273 /* reset io mode */
1274 ctx->io_mode = ATOM_IO_MM;
1275 /* reset divmul */
1276 ctx->divmul[0] = 0;
1277 ctx->divmul[1] = 0;
1278 r = amdgpu_atom_execute_table_locked(ctx, index, params);
1279 mutex_unlock(&ctx->mutex);
1280 return r;
1281 }
1282
1283 static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 };
1284
atom_index_iio(struct atom_context * ctx,int base)1285 static void atom_index_iio(struct atom_context *ctx, int base)
1286 {
1287 ctx->iio = kzalloc(2 * 256, GFP_KERNEL);
1288 if (!ctx->iio)
1289 return;
1290 while (CU8(base) == ATOM_IIO_START) {
1291 ctx->iio[CU8(base + 1)] = base + 2;
1292 base += 2;
1293 while (CU8(base) != ATOM_IIO_END)
1294 base += atom_iio_len[CU8(base)];
1295 base += 3;
1296 }
1297 }
1298
amdgpu_atom_parse(struct card_info * card,void * bios)1299 struct atom_context *amdgpu_atom_parse(struct card_info *card, void *bios)
1300 {
1301 int base;
1302 struct atom_context *ctx =
1303 kzalloc(sizeof(struct atom_context), GFP_KERNEL);
1304 char *str;
1305 u16 idx;
1306
1307 if (!ctx)
1308 return NULL;
1309
1310 ctx->card = card;
1311 ctx->bios = bios;
1312
1313 if (CU16(0) != ATOM_BIOS_MAGIC) {
1314 pr_info("Invalid BIOS magic\n");
1315 kfree(ctx);
1316 return NULL;
1317 }
1318 if (strncmp
1319 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC,
1320 strlen(ATOM_ATI_MAGIC))) {
1321 pr_info("Invalid ATI magic\n");
1322 kfree(ctx);
1323 return NULL;
1324 }
1325
1326 base = CU16(ATOM_ROM_TABLE_PTR);
1327 if (strncmp
1328 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC,
1329 strlen(ATOM_ROM_MAGIC))) {
1330 pr_info("Invalid ATOM magic\n");
1331 kfree(ctx);
1332 return NULL;
1333 }
1334
1335 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR);
1336 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR);
1337 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4);
1338 if (!ctx->iio) {
1339 amdgpu_atom_destroy(ctx);
1340 return NULL;
1341 }
1342
1343 idx = CU16(ATOM_ROM_PART_NUMBER_PTR);
1344 if (idx == 0)
1345 idx = 0x80;
1346
1347 str = CSTR(idx);
1348 if (*str != '\0') {
1349 pr_info("ATOM BIOS: %s\n", str);
1350 strlcpy(ctx->vbios_version, str, sizeof(ctx->vbios_version));
1351 }
1352
1353
1354 return ctx;
1355 }
1356
amdgpu_atom_asic_init(struct atom_context * ctx)1357 int amdgpu_atom_asic_init(struct atom_context *ctx)
1358 {
1359 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
1360 uint32_t ps[16];
1361 int ret;
1362
1363 memset(ps, 0, 64);
1364
1365 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
1366 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR));
1367 if (!ps[0] || !ps[1])
1368 return 1;
1369
1370 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT))
1371 return 1;
1372 ret = amdgpu_atom_execute_table(ctx, ATOM_CMD_INIT, ps);
1373 if (ret)
1374 return ret;
1375
1376 memset(ps, 0, 64);
1377
1378 return ret;
1379 }
1380
amdgpu_atom_destroy(struct atom_context * ctx)1381 void amdgpu_atom_destroy(struct atom_context *ctx)
1382 {
1383 kfree(ctx->iio);
1384 kfree(ctx);
1385 }
1386
amdgpu_atom_parse_data_header(struct atom_context * ctx,int index,uint16_t * size,uint8_t * frev,uint8_t * crev,uint16_t * data_start)1387 bool amdgpu_atom_parse_data_header(struct atom_context *ctx, int index,
1388 uint16_t * size, uint8_t * frev, uint8_t * crev,
1389 uint16_t * data_start)
1390 {
1391 int offset = index * 2 + 4;
1392 int idx = CU16(ctx->data_table + offset);
1393 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4);
1394
1395 if (!mdt[index])
1396 return false;
1397
1398 if (size)
1399 *size = CU16(idx);
1400 if (frev)
1401 *frev = CU8(idx + 2);
1402 if (crev)
1403 *crev = CU8(idx + 3);
1404 *data_start = idx;
1405 return true;
1406 }
1407
amdgpu_atom_parse_cmd_header(struct atom_context * ctx,int index,uint8_t * frev,uint8_t * crev)1408 bool amdgpu_atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
1409 uint8_t * crev)
1410 {
1411 int offset = index * 2 + 4;
1412 int idx = CU16(ctx->cmd_table + offset);
1413 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4);
1414
1415 if (!mct[index])
1416 return false;
1417
1418 if (frev)
1419 *frev = CU8(idx + 2);
1420 if (crev)
1421 *crev = CU8(idx + 3);
1422 return true;
1423 }
1424
1425
