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drm/radeon/kms: catch atombios infinite loop and break out of it
[net-next-2.6.git] / drivers / gpu / drm / radeon / atom.c
CommitLineData
771fe6b9
JG		 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>
ce36f00d 27#include <asm/unaligned.h>
771fe6b9
JG		 28
29#define ATOM_DEBUG
30
31#include "atom.h"
32#include "atom-names.h"
33#include "atom-bits.h"
34
35#define ATOM_COND_ABOVE 0
36#define ATOM_COND_ABOVEOREQUAL 1
37#define ATOM_COND_ALWAYS 2
38#define ATOM_COND_BELOW 3
39#define ATOM_COND_BELOWOREQUAL 4
40#define ATOM_COND_EQUAL 5
41#define ATOM_COND_NOTEQUAL 6
42
43#define ATOM_PORT_ATI 0
44#define ATOM_PORT_PCI 1
45#define ATOM_PORT_SYSIO 2
46
47#define ATOM_UNIT_MICROSEC 0
48#define ATOM_UNIT_MILLISEC 1
49
50#define PLL_INDEX 2
51#define PLL_DATA 3
52
53typedef struct {
54 struct atom_context *ctx;
771fe6b9
JG		 55 uint32_t *ps, *ws;
56 int ps_shift;
57 uint16_t start;
c21b0fe6
JG		 58 unsigned last_jump;
59 unsigned long last_jump_jiffies;
60 bool abort;
771fe6b9
JG		 61} atom_exec_context;
62
63int atom_debug = 0;
c21b0fe6
JG		 64static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params);
65int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params);
771fe6b9
JG		 66
67static uint32_t atom_arg_mask[8] =
68 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000,
690xFF000000 };
70static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 };
71
72static int atom_dst_to_src[8][4] = {
73 /* translate destination alignment field to the source alignment encoding */
74 {0, 0, 0, 0},
75 {1, 2, 3, 0},
76 {1, 2, 3, 0},
77 {1, 2, 3, 0},
78 {4, 5, 6, 7},
79 {4, 5, 6, 7},
80 {4, 5, 6, 7},
81 {4, 5, 6, 7},
82};
83static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 };
84
85static int debug_depth = 0;
86#ifdef ATOM_DEBUG
87static void debug_print_spaces(int n)
88{
89 while (n--)
90 printk(" ");
91}
92
93#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0)
94#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0)
95#else
96#define DEBUG(...) do { } while (0)
97#define SDEBUG(...) do { } while (0)
98#endif
99
100static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
101 uint32_t index, uint32_t data)
102{
103 uint32_t temp = 0xCDCDCDCD;
104 while (1)
105 switch (CU8(base)) {
106 case ATOM_IIO_NOP:
107 base++;
108 break;
109 case ATOM_IIO_READ:
110 temp = ctx->card->reg_read(ctx->card, CU16(base + 1));
111 base += 3;
112 break;
113 case ATOM_IIO_WRITE:
23115b05 114 (void)ctx->card->reg_read(ctx->card, CU16(base + 1));
771fe6b9
JG		 115 ctx->card->reg_write(ctx->card, CU16(base + 1), temp);
116 base += 3;
117 break;
118 case ATOM_IIO_CLEAR:
119 temp &=
120 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
121 CU8(base + 2));
122 base += 3;
123 break;
124 case ATOM_IIO_SET:
125 temp |=
126 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base +
127 2);
128 base += 3;
129 break;
130 case ATOM_IIO_MOVE_INDEX:
131 temp &=
132 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
133 CU8(base + 2));
134 temp |=
135 ((index >> CU8(base + 2)) &
136 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
137 3);
138 base += 4;
139 break;
140 case ATOM_IIO_MOVE_DATA:
141 temp &=
142 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
143 CU8(base + 2));
144 temp |=
145 ((data >> CU8(base + 2)) &
146 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
147 3);
148 base += 4;
149 break;
150 case ATOM_IIO_MOVE_ATTR:
151 temp &=
152 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
153 CU8(base + 2));
154 temp |=
155 ((ctx->
156 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 -
157 CU8
158 (base
159 +
160 1))))
161 << CU8(base + 3);
162 base += 4;
163 break;
164 case ATOM_IIO_END:
165 return temp;
166 default:
167 printk(KERN_INFO "Unknown IIO opcode.\n");
168 return 0;
169 }
170}
171
172static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr,
173 int *ptr, uint32_t *saved, int print)
174{
175 uint32_t idx, val = 0xCDCDCDCD, align, arg;
176 struct atom_context *gctx = ctx->ctx;
177 arg = attr & 7;
178 align = (attr >> 3) & 7;
179 switch (arg) {
180 case ATOM_ARG_REG:
181 idx = U16(*ptr);
182 (*ptr) += 2;
183 if (print)
184 DEBUG("REG[0x%04X]", idx);
185 idx += gctx->reg_block;
186 switch (gctx->io_mode) {
187 case ATOM_IO_MM:
188 val = gctx->card->reg_read(gctx->card, idx);
189 break;
190 case ATOM_IO_PCI:
191 printk(KERN_INFO
192 "PCI registers are not implemented.\n");
193 return 0;
194 case ATOM_IO_SYSIO:
195 printk(KERN_INFO
196 "SYSIO registers are not implemented.\n");
197 return 0;
198 default:
199 if (!(gctx->io_mode & 0x80)) {
200 printk(KERN_INFO "Bad IO mode.\n");
201 return 0;
202 }
203 if (!gctx->iio[gctx->io_mode & 0x7F]) {
204 printk(KERN_INFO
205 "Undefined indirect IO read method %d.\n",
206 gctx->io_mode & 0x7F);
207 return 0;
208 }
209 val =
210 atom_iio_execute(gctx,
211 gctx->iio[gctx->io_mode & 0x7F],
212 idx, 0);
213 }
214 break;
215 case ATOM_ARG_PS:
216 idx = U8(*ptr);
217 (*ptr)++;
ce36f00d
MT		 218 /* get_unaligned_le32 avoids unaligned accesses from atombios
219 * tables, noticed on a DEC Alpha. */
220 val = get_unaligned_le32((u32 *)&ctx->ps[idx]);
771fe6b9
JG		 221 if (print)
222 DEBUG("PS[0x%02X,0x%04X]", idx, val);
223 break;
224 case ATOM_ARG_WS:
225 idx = U8(*ptr);
226 (*ptr)++;
227 if (print)
228 DEBUG("WS[0x%02X]", idx);
229 switch (idx) {
230 case ATOM_WS_QUOTIENT:
231 val = gctx->divmul[0];
232 break;
233 case ATOM_WS_REMAINDER:
234 val = gctx->divmul[1];
235 break;
236 case ATOM_WS_DATAPTR:
237 val = gctx->data_block;
238 break;
239 case ATOM_WS_SHIFT:
240 val = gctx->shift;
241 break;
242 case ATOM_WS_OR_MASK:
243 val = 1 << gctx->shift;
244 break;
245 case ATOM_WS_AND_MASK:
246 val = ~(1 << gctx->shift);
247 break;
248 case ATOM_WS_FB_WINDOW:
249 val = gctx->fb_base;
250 break;
251 case ATOM_WS_ATTRIBUTES:
252 val = gctx->io_attr;
253 break;
e2f8e870
AD		 254 case ATOM_WS_REGPTR:
255 val = gctx->reg_block;
256 break;
771fe6b9
JG		 257 default:
258 val = ctx->ws[idx];
259 }
260 break;
261 case ATOM_ARG_ID:
262 idx = U16(*ptr);
263 (*ptr) += 2;
264 if (print) {
265 if (gctx->data_block)
266 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block);
267 else
268 DEBUG("ID[0x%04X]", idx);
269 }
270 val = U32(idx + gctx->data_block);
271 break;
272 case ATOM_ARG_FB:
273 idx = U8(*ptr);
274 (*ptr)++;
d904ef9b 275 val = gctx->scratch[((gctx->fb_base + idx) / 4)];
771fe6b9
JG		 276 if (print)
277 DEBUG("FB[0x%02X]", idx);
d904ef9b 278 break;
771fe6b9
JG		 279 case ATOM_ARG_IMM:
280 switch (align) {
281 case ATOM_SRC_DWORD:
282 val = U32(*ptr);
283 (*ptr) += 4;
284 if (print)
285 DEBUG("IMM 0x%08X\n", val);
286 return val;
287 case ATOM_SRC_WORD0:
288 case ATOM_SRC_WORD8:
289 case ATOM_SRC_WORD16:
290 val = U16(*ptr);
291 (*ptr) += 2;
292 if (print)
293 DEBUG("IMM 0x%04X\n", val);
294 return val;
295 case ATOM_SRC_BYTE0:
296 case ATOM_SRC_BYTE8:
297 case ATOM_SRC_BYTE16:
298 case ATOM_SRC_BYTE24:
299 val = U8(*ptr);
300 (*ptr)++;
301 if (print)
302 DEBUG("IMM 0x%02X\n", val);
303 return val;
304 }
305 return 0;
306 case ATOM_ARG_PLL:
307 idx = U8(*ptr);
308 (*ptr)++;
309 if (print)
310 DEBUG("PLL[0x%02X]", idx);
311 val = gctx->card->pll_read(gctx->card, idx);
312 break;
313 case ATOM_ARG_MC:
314 idx = U8(*ptr);
315 (*ptr)++;
316 if (print)
317 DEBUG("MC[0x%02X]", idx);
318 val = gctx->card->mc_read(gctx->card, idx);
319 break;
320 }
321 if (saved)
322 *saved = val;
323 val &= atom_arg_mask[align];
324 val >>= atom_arg_shift[align];
325 if (print)
326 switch (align) {
327 case ATOM_SRC_DWORD:
328 DEBUG(".[31:0] -> 0x%08X\n", val);
329 break;
330 case ATOM_SRC_WORD0:
331 DEBUG(".[15:0] -> 0x%04X\n", val);
332 break;
333 case ATOM_SRC_WORD8:
334 DEBUG(".[23:8] -> 0x%04X\n", val);
335 break;
336 case ATOM_SRC_WORD16:
337 DEBUG(".[31:16] -> 0x%04X\n", val);
338 break;
339 case ATOM_SRC_BYTE0:
340 DEBUG(".[7:0] -> 0x%02X\n", val);
341 break;
342 case ATOM_SRC_BYTE8:
343 DEBUG(".[15:8] -> 0x%02X\n", val);
344 break;
345 case ATOM_SRC_BYTE16:
346 DEBUG(".[23:16] -> 0x%02X\n", val);
347 break;
348 case ATOM_SRC_BYTE24:
349 DEBUG(".[31:24] -> 0x%02X\n", val);
350 break;
351 }
352 return val;
353}
354
355static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr)
356{
357 uint32_t align = (attr >> 3) & 7, arg = attr & 7;
358 switch (arg) {
359 case ATOM_ARG_REG:
360 case ATOM_ARG_ID:
361 (*ptr) += 2;
362 break;
363 case ATOM_ARG_PLL:
364 case ATOM_ARG_MC:
365 case ATOM_ARG_PS:
366 case ATOM_ARG_WS:
367 case ATOM_ARG_FB:
368 (*ptr)++;
369 break;
370 case ATOM_ARG_IMM:
371 switch (align) {
372 case ATOM_SRC_DWORD:
373 (*ptr) += 4;
374 return;
375 case ATOM_SRC_WORD0:
376 case ATOM_SRC_WORD8:
377 case ATOM_SRC_WORD16:
378 (*ptr) += 2;
379 return;
380 case ATOM_SRC_BYTE0:
381 case ATOM_SRC_BYTE8:
382 case ATOM_SRC_BYTE16:
383 case ATOM_SRC_BYTE24:
384 (*ptr)++;
385 return;
386 }
387 return;
388 }
389}
390
391static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr)
392{
393 return atom_get_src_int(ctx, attr, ptr, NULL, 1);
394}
395
9f53e793
AD		 396static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr)
397{
398 uint32_t val = 0xCDCDCDCD;
399
400 switch (align) {
401 case ATOM_SRC_DWORD:
402 val = U32(*ptr);
403 (*ptr) += 4;
404 break;
405 case ATOM_SRC_WORD0:
406 case ATOM_SRC_WORD8:
407 case ATOM_SRC_WORD16:
408 val = U16(*ptr);
409 (*ptr) += 2;
410 break;
411 case ATOM_SRC_BYTE0:
412 case ATOM_SRC_BYTE8:
413 case ATOM_SRC_BYTE16:
414 case ATOM_SRC_BYTE24:
415 val = U8(*ptr);
416 (*ptr)++;
417 break;
418 }
419 return val;
420}
421
771fe6b9
JG		 422static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr,
423 int *ptr, uint32_t *saved, int print)
424{
425 return atom_get_src_int(ctx,
426 arg | atom_dst_to_src[(attr >> 3) &
427 7][(attr >> 6) & 3] << 3,
428 ptr, saved, print);
429}
430
431static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr)
432{
433 atom_skip_src_int(ctx,
434 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) &
435 3] << 3, ptr);
436}
437
438static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr,
439 int *ptr, uint32_t val, uint32_t saved)
440{
441 uint32_t align =
442 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val =
443 val, idx;
444 struct atom_context *gctx = ctx->ctx;
445 old_val &= atom_arg_mask[align] >> atom_arg_shift[align];
446 val <<= atom_arg_shift[align];
447 val &= atom_arg_mask[align];
448 saved &= ~atom_arg_mask[align];
449 val |= saved;
450 switch (arg) {
451 case ATOM_ARG_REG:
452 idx = U16(*ptr);
453 (*ptr) += 2;
454 DEBUG("REG[0x%04X]", idx);
455 idx += gctx->reg_block;
456 switch (gctx->io_mode) {
457 case ATOM_IO_MM:
458 if (idx == 0)
459 gctx->card->reg_write(gctx->card, idx,
460 val << 2);
461 else
462 gctx->card->reg_write(gctx->card, idx, val);
463 break;
464 case ATOM_IO_PCI:
465 printk(KERN_INFO
466 "PCI registers are not implemented.\n");
467 return;
468 case ATOM_IO_SYSIO:
469 printk(KERN_INFO
470 "SYSIO registers are not implemented.\n");
471 return;
472 default:
473 if (!(gctx->io_mode & 0x80)) {
474 printk(KERN_INFO "Bad IO mode.\n");
475 return;
476 }
477 if (!gctx->iio[gctx->io_mode & 0xFF]) {
478 printk(KERN_INFO
479 "Undefined indirect IO write method %d.\n",
480 gctx->io_mode & 0x7F);
481 return;
482 }
483 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF],
484 idx, val);
485 }
486 break;
487 case ATOM_ARG_PS:
488 idx = U8(*ptr);
489 (*ptr)++;
490 DEBUG("PS[0x%02X]", idx);
491 ctx->ps[idx] = cpu_to_le32(val);
492 break;
493 case ATOM_ARG_WS:
494 idx = U8(*ptr);
495 (*ptr)++;
496 DEBUG("WS[0x%02X]", idx);
497 switch (idx) {
498 case ATOM_WS_QUOTIENT:
499 gctx->divmul[0] = val;
500 break;
501 case ATOM_WS_REMAINDER:
502 gctx->divmul[1] = val;
503 break;
504 case ATOM_WS_DATAPTR:
505 gctx->data_block = val;
506 break;
507 case ATOM_WS_SHIFT:
508 gctx->shift = val;
509 break;
510 case ATOM_WS_OR_MASK:
511 case ATOM_WS_AND_MASK:
512 break;
513 case ATOM_WS_FB_WINDOW:
514 gctx->fb_base = val;
515 break;
516 case ATOM_WS_ATTRIBUTES:
517 gctx->io_attr = val;
518 break;
e2f8e870
AD		 519 case ATOM_WS_REGPTR:
520 gctx->reg_block = val;
521 break;
771fe6b9
JG		 522 default:
523 ctx->ws[idx] = val;
524 }
525 break;
526 case ATOM_ARG_FB:
527 idx = U8(*ptr);
528 (*ptr)++;
d904ef9b 529 gctx->scratch[((gctx->fb_base + idx) / 4)] = val;
771fe6b9 530 DEBUG("FB[0x%02X]", idx);
d904ef9b 531 break;
771fe6b9
JG		 532 case ATOM_ARG_PLL:
533 idx = U8(*ptr);
534 (*ptr)++;
535 DEBUG("PLL[0x%02X]", idx);
536 gctx->card->pll_write(gctx->card, idx, val);
537 break;
538 case ATOM_ARG_MC:
539 idx = U8(*ptr);
540 (*ptr)++;
541 DEBUG("MC[0x%02X]", idx);
542 gctx->card->mc_write(gctx->card, idx, val);
543 return;
544 }
545 switch (align) {
546 case ATOM_SRC_DWORD:
547 DEBUG(".[31:0] <- 0x%08X\n", old_val);
548 break;
549 case ATOM_SRC_WORD0:
550 DEBUG(".[15:0] <- 0x%04X\n", old_val);
551 break;
552 case ATOM_SRC_WORD8:
553 DEBUG(".[23:8] <- 0x%04X\n", old_val);
554 break;
555 case ATOM_SRC_WORD16:
556 DEBUG(".[31:16] <- 0x%04X\n", old_val);
557 break;
558 case ATOM_SRC_BYTE0:
559 DEBUG(".[7:0] <- 0x%02X\n", old_val);
560 break;
561 case ATOM_SRC_BYTE8:
562 DEBUG(".[15:8] <- 0x%02X\n", old_val);
563 break;
564 case ATOM_SRC_BYTE16:
565 DEBUG(".[23:16] <- 0x%02X\n", old_val);
566 break;
567 case ATOM_SRC_BYTE24:
568 DEBUG(".[31:24] <- 0x%02X\n", old_val);
569 break;
570 }
571}
572
573static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg)
574{
575 uint8_t attr = U8((*ptr)++);
576 uint32_t dst, src, saved;
577 int dptr = *ptr;
578 SDEBUG(" dst: ");
579 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
580 SDEBUG(" src: ");
581 src = atom_get_src(ctx, attr, ptr);
582 dst += src;
583 SDEBUG(" dst: ");
584 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
585}
586
587static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg)
588{
589 uint8_t attr = U8((*ptr)++);
590 uint32_t dst, src, saved;
591 int dptr = *ptr;
592 SDEBUG(" dst: ");
593 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
594 SDEBUG(" src: ");
595 src = atom_get_src(ctx, attr, ptr);
596 dst &= src;
597 SDEBUG(" dst: ");
598 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
599}
600
601static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg)
602{
603 printk("ATOM BIOS beeped!\n");
604}
605
606static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg)
607{
608 int idx = U8((*ptr)++);
c21b0fe6
JG		 609 int r = 0;
610
771fe6b9
JG		 611 if (idx < ATOM_TABLE_NAMES_CNT)
612 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]);
613 else
614 SDEBUG(" table: %d\n", idx);
615 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx))
c21b0fe6
JG		 616 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift);
617 if (r) {
618 ctx->abort = true;
619 }
771fe6b9
JG		 620}
621
622static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg)
623{
624 uint8_t attr = U8((*ptr)++);
625 uint32_t saved;
626 int dptr = *ptr;
627 attr &= 0x38;
628 attr |= atom_def_dst[attr >> 3] << 6;
629 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
630 SDEBUG(" dst: ");
631 atom_put_dst(ctx, arg, attr, &dptr, 0, saved);
632}
633
634static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg)
635{
636 uint8_t attr = U8((*ptr)++);
637 uint32_t dst, src;
638 SDEBUG(" src1: ");
639 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
640 SDEBUG(" src2: ");
641 src = atom_get_src(ctx, attr, ptr);
642 ctx->ctx->cs_equal = (dst == src);
643 ctx->ctx->cs_above = (dst > src);
644 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE",
645 ctx->ctx->cs_above ? "GT" : "LE");
646}
647
648static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
649{
650 uint8_t count = U8((*ptr)++);
651 SDEBUG(" count: %d\n", count);
652 if (arg == ATOM_UNIT_MICROSEC)
01d45039 653 udelay(count);
771fe6b9
JG		 654 else
655 schedule_timeout_uninterruptible(msecs_to_jiffies(count));
656}
657
658static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg)
659{
660 uint8_t attr = U8((*ptr)++);
661 uint32_t dst, src;
662 SDEBUG(" src1: ");
663 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
664 SDEBUG(" src2: ");
665 src = atom_get_src(ctx, attr, ptr);
666 if (src != 0) {
667 ctx->ctx->divmul[0] = dst / src;
668 ctx->ctx->divmul[1] = dst % src;
669 } else {
670 ctx->ctx->divmul[0] = 0;
671 ctx->ctx->divmul[1] = 0;
672 }
673}
674
675static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg)
676{
677 /* functionally, a nop */
678}
679
680static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
681{
682 int execute = 0, target = U16(*ptr);
c21b0fe6
JG		 683 unsigned long cjiffies;
684
771fe6b9
JG		 685 (*ptr) += 2;
686 switch (arg) {
687 case ATOM_COND_ABOVE:
688 execute = ctx->ctx->cs_above;
689 break;
690 case ATOM_COND_ABOVEOREQUAL:
691 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal;
692 break;
693 case ATOM_COND_ALWAYS:
694 execute = 1;
695 break;
696 case ATOM_COND_BELOW:
697 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal);
698 break;
699 case ATOM_COND_BELOWOREQUAL:
700 execute = !ctx->ctx->cs_above;
701 break;
702 case ATOM_COND_EQUAL:
703 execute = ctx->ctx->cs_equal;
704 break;
705 case ATOM_COND_NOTEQUAL:
706 execute = !ctx->ctx->cs_equal;
707 break;
708 }
709 if (arg != ATOM_COND_ALWAYS)
710 SDEBUG(" taken: %s\n", execute ? "yes" : "no");
711 SDEBUG(" target: 0x%04X\n", target);
c21b0fe6
JG		 712 if (execute) {
713 if (ctx->last_jump == (ctx->start + target)) {
714 cjiffies = jiffies;
715 if (time_after(cjiffies, ctx->last_jump_jiffies)) {
716 cjiffies -= ctx->last_jump_jiffies;
717 if ((jiffies_to_msecs(cjiffies) > 1000)) {
718 DRM_ERROR("atombios stuck in loop for more than 1sec aborting\n");
719 ctx->abort = true;
720 }
721 } else {
722 /* jiffies wrap around we will just wait a little longer */
723 ctx->last_jump_jiffies = jiffies;
724 }
725 } else {
726 ctx->last_jump = ctx->start + target;
727 ctx->last_jump_jiffies = jiffies;
728 }
771fe6b9 729 *ptr = ctx->start + target;
c21b0fe6 730 }
771fe6b9
JG		 731}
732
733static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg)
734{
735 uint8_t attr = U8((*ptr)++);
736 uint32_t dst, src1, src2, saved;
737 int dptr = *ptr;
738 SDEBUG(" dst: ");
739 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
740 SDEBUG(" src1: ");
9f53e793 741 src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
771fe6b9 742 SDEBUG(" src2: ");
e2f8e870 743 src2 = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 744 dst &= src1;
745 dst |= src2;
746 SDEBUG(" dst: ");
747 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
748}
749
750static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg)
751{
752 uint8_t attr = U8((*ptr)++);
753 uint32_t src, saved;
754 int dptr = *ptr;
755 if (((attr >> 3) & 7) != ATOM_SRC_DWORD)
756 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
757 else {
758 atom_skip_dst(ctx, arg, attr, ptr);
759 saved = 0xCDCDCDCD;
760 }
761 SDEBUG(" src: ");
762 src = atom_get_src(ctx, attr, ptr);
763 SDEBUG(" dst: ");
764 atom_put_dst(ctx, arg, attr, &dptr, src, saved);
765}
766
767static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg)
768{
769 uint8_t attr = U8((*ptr)++);
770 uint32_t dst, src;
771 SDEBUG(" src1: ");
772 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
773 SDEBUG(" src2: ");
774 src = atom_get_src(ctx, attr, ptr);
775 ctx->ctx->divmul[0] = dst * src;
776}
777
778static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg)
779{
780 /* nothing */
781}
782
783static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg)
784{
785 uint8_t attr = U8((*ptr)++);
786 uint32_t dst, src, saved;
787 int dptr = *ptr;
788 SDEBUG(" dst: ");
789 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
790 SDEBUG(" src: ");
791 src = atom_get_src(ctx, attr, ptr);
792 dst |= src;
793 SDEBUG(" dst: ");
794 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
795}
796
797static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg)
798{
799 uint8_t val = U8((*ptr)++);
800 SDEBUG("POST card output: 0x%02X\n", val);
801}
802
803static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg)
804{
805 printk(KERN_INFO "unimplemented!\n");
806}
807
808static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg)
809{
810 printk(KERN_INFO "unimplemented!\n");
811}
812
813static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg)
814{
815 printk(KERN_INFO "unimplemented!\n");
816}
817
818static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg)
819{
820 int idx = U8(*ptr);
821 (*ptr)++;
822 SDEBUG(" block: %d\n", idx);
823 if (!idx)
824 ctx->ctx->data_block = 0;
825 else if (idx == 255)
826 ctx->ctx->data_block = ctx->start;
827 else
828 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx);
829 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block);
830}
831
832static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg)
833{
834 uint8_t attr = U8((*ptr)++);
835 SDEBUG(" fb_base: ");
836 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr);
837}
838
839static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg)
840{
841 int port;
842 switch (arg) {
843 case ATOM_PORT_ATI:
844 port = U16(*ptr);
845 if (port < ATOM_IO_NAMES_CNT)
846 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]);
847 else
848 SDEBUG(" port: %d\n", port);
849 if (!port)
850 ctx->ctx->io_mode = ATOM_IO_MM;
851 else
852 ctx->ctx->io_mode = ATOM_IO_IIO | port;
853 (*ptr) += 2;
854 break;
855 case ATOM_PORT_PCI:
856 ctx->ctx->io_mode = ATOM_IO_PCI;
857 (*ptr)++;
858 break;
859 case ATOM_PORT_SYSIO:
860 ctx->ctx->io_mode = ATOM_IO_SYSIO;
861 (*ptr)++;
862 break;
863 }
864}
865
866static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg)
867{
868 ctx->ctx->reg_block = U16(*ptr);
869 (*ptr) += 2;
870 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block);
871}
872
9f53e793
AD		 873static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg)
874{
875 uint8_t attr = U8((*ptr)++), shift;
876 uint32_t saved, dst;
877 int dptr = *ptr;
878 attr &= 0x38;
879 attr |= atom_def_dst[attr >> 3] << 6;
880 SDEBUG(" dst: ");
881 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
882 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
883 SDEBUG(" shift: %d\n", shift);
884 dst <<= shift;
885 SDEBUG(" dst: ");
886 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
887}
888
889static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg)
890{
891 uint8_t attr = U8((*ptr)++), shift;
892 uint32_t saved, dst;
893 int dptr = *ptr;
894 attr &= 0x38;
895 attr |= atom_def_dst[attr >> 3] << 6;
896 SDEBUG(" dst: ");
897 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
898 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
899 SDEBUG(" shift: %d\n", shift);
900 dst >>= shift;
901 SDEBUG(" dst: ");
902 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
903}
904
771fe6b9
JG		 905static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
906{
907 uint8_t attr = U8((*ptr)++), shift;
908 uint32_t saved, dst;
909 int dptr = *ptr;
771fe6b9
JG		 910 SDEBUG(" dst: ");
911 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
9f53e793 912 shift = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 913 SDEBUG(" shift: %d\n", shift);
914 dst <<= shift;
915 SDEBUG(" dst: ");
916 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
917}
918
919static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
920{
921 uint8_t attr = U8((*ptr)++), shift;
922 uint32_t saved, dst;
923 int dptr = *ptr;
771fe6b9
JG		 924 SDEBUG(" dst: ");
925 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
9f53e793 926 shift = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 927 SDEBUG(" shift: %d\n", shift);
928 dst >>= shift;
929 SDEBUG(" dst: ");
930 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
931}
932
933static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg)
934{
935 uint8_t attr = U8((*ptr)++);
936 uint32_t dst, src, saved;
937 int dptr = *ptr;
938 SDEBUG(" dst: ");
939 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
940 SDEBUG(" src: ");
941 src = atom_get_src(ctx, attr, ptr);
942 dst -= src;
943 SDEBUG(" dst: ");
944 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
945}
946
947static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg)
948{
949 uint8_t attr = U8((*ptr)++);
950 uint32_t src, val, target;
951 SDEBUG(" switch: ");
952 src = atom_get_src(ctx, attr, ptr);
953 while (U16(*ptr) != ATOM_CASE_END)
954 if (U8(*ptr) == ATOM_CASE_MAGIC) {
955 (*ptr)++;
956 SDEBUG(" case: ");
957 val =
958 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM,
959 ptr);
960 target = U16(*ptr);
961 if (val == src) {
962 SDEBUG(" target: %04X\n", target);
963 *ptr = ctx->start + target;
964 return;
965 }
966 (*ptr) += 2;
967 } else {
968 printk(KERN_INFO "Bad case.\n");
969 return;
970 }
971 (*ptr) += 2;
972}
973
974static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg)
975{
976 uint8_t attr = U8((*ptr)++);
977 uint32_t dst, src;
978 SDEBUG(" src1: ");
979 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
980 SDEBUG(" src2: ");
981 src = atom_get_src(ctx, attr, ptr);
982 ctx->ctx->cs_equal = ((dst & src) == 0);
983 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE");
984}
985
986static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg)
987{
988 uint8_t attr = U8((*ptr)++);
989 uint32_t dst, src, saved;
990 int dptr = *ptr;
991 SDEBUG(" dst: ");
992 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
993 SDEBUG(" src: ");
994 src = atom_get_src(ctx, attr, ptr);
995 dst ^= src;
996 SDEBUG(" dst: ");
997 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
998}
999
1000static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg)
1001{
1002 printk(KERN_INFO "unimplemented!\n");
1003}
1004
1005static struct {
1006 void (*func) (atom_exec_context *, int *, int);
1007 int arg;
1008} opcode_table[ATOM_OP_CNT] = {
1009 {
1010 NULL, 0}, {
1011 atom_op_move, ATOM_ARG_REG}, {
1012 atom_op_move, ATOM_ARG_PS}, {
1013 atom_op_move, ATOM_ARG_WS}, {
1014 atom_op_move, ATOM_ARG_FB}, {
1015 atom_op_move, ATOM_ARG_PLL}, {
1016 atom_op_move, ATOM_ARG_MC}, {
1017 atom_op_and, ATOM_ARG_REG}, {
1018 atom_op_and, ATOM_ARG_PS}, {
1019 atom_op_and, ATOM_ARG_WS}, {
1020 atom_op_and, ATOM_ARG_FB}, {
1021 atom_op_and, ATOM_ARG_PLL}, {
1022 atom_op_and, ATOM_ARG_MC}, {
1023 atom_op_or, ATOM_ARG_REG}, {
1024 atom_op_or, ATOM_ARG_PS}, {
1025 atom_op_or, ATOM_ARG_WS}, {
1026 atom_op_or, ATOM_ARG_FB}, {
1027 atom_op_or, ATOM_ARG_PLL}, {
1028 atom_op_or, ATOM_ARG_MC}, {
9f53e793
AD		 1029 atom_op_shift_left, ATOM_ARG_REG}, {
1030 atom_op_shift_left, ATOM_ARG_PS}, {
1031 atom_op_shift_left, ATOM_ARG_WS}, {
1032 atom_op_shift_left, ATOM_ARG_FB}, {
1033 atom_op_shift_left, ATOM_ARG_PLL}, {
1034 atom_op_shift_left, ATOM_ARG_MC}, {
1035 atom_op_shift_right, ATOM_ARG_REG}, {
1036 atom_op_shift_right, ATOM_ARG_PS}, {
1037 atom_op_shift_right, ATOM_ARG_WS}, {
1038 atom_op_shift_right, ATOM_ARG_FB}, {
1039 atom_op_shift_right, ATOM_ARG_PLL}, {
1040 atom_op_shift_right, ATOM_ARG_MC}, {
771fe6b9
JG		 1041 atom_op_mul, ATOM_ARG_REG}, {
1042 atom_op_mul, ATOM_ARG_PS}, {
1043 atom_op_mul, ATOM_ARG_WS}, {
1044 atom_op_mul, ATOM_ARG_FB}, {
1045 atom_op_mul, ATOM_ARG_PLL}, {
1046 atom_op_mul, ATOM_ARG_MC}, {
1047 atom_op_div, ATOM_ARG_REG}, {
1048 atom_op_div, ATOM_ARG_PS}, {
1049 atom_op_div, ATOM_ARG_WS}, {
1050 atom_op_div, ATOM_ARG_FB}, {
1051 atom_op_div, ATOM_ARG_PLL}, {
1052 atom_op_div, ATOM_ARG_MC}, {
1053 atom_op_add, ATOM_ARG_REG}, {
1054 atom_op_add, ATOM_ARG_PS}, {
1055 atom_op_add, ATOM_ARG_WS}, {
1056 atom_op_add, ATOM_ARG_FB}, {
1057 atom_op_add, ATOM_ARG_PLL}, {
1058 atom_op_add, ATOM_ARG_MC}, {
1059 atom_op_sub, ATOM_ARG_REG}, {
1060 atom_op_sub, ATOM_ARG_PS}, {
1061 atom_op_sub, ATOM_ARG_WS}, {
1062 atom_op_sub, ATOM_ARG_FB}, {
1063 atom_op_sub, ATOM_ARG_PLL}, {
1064 atom_op_sub, ATOM_ARG_MC}, {
1065 atom_op_setport, ATOM_PORT_ATI}, {
1066 atom_op_setport, ATOM_PORT_PCI}, {
1067 atom_op_setport, ATOM_PORT_SYSIO}, {
1068 atom_op_setregblock, 0}, {
1069 atom_op_setfbbase, 0}, {
1070 atom_op_compare, ATOM_ARG_REG}, {
1071 atom_op_compare, ATOM_ARG_PS}, {
1072 atom_op_compare, ATOM_ARG_WS}, {
1073 atom_op_compare, ATOM_ARG_FB}, {
1074 atom_op_compare, ATOM_ARG_PLL}, {
1075 atom_op_compare, ATOM_ARG_MC}, {
1076 atom_op_switch, 0}, {
1077 atom_op_jump, ATOM_COND_ALWAYS}, {
1078 atom_op_jump, ATOM_COND_EQUAL}, {
1079 atom_op_jump, ATOM_COND_BELOW}, {
1080 atom_op_jump, ATOM_COND_ABOVE}, {
1081 atom_op_jump, ATOM_COND_BELOWOREQUAL}, {
1082 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, {
1083 atom_op_jump, ATOM_COND_NOTEQUAL}, {
1084 atom_op_test, ATOM_ARG_REG}, {
1085 atom_op_test, ATOM_ARG_PS}, {
1086 atom_op_test, ATOM_ARG_WS}, {
1087 atom_op_test, ATOM_ARG_FB}, {
1088 atom_op_test, ATOM_ARG_PLL}, {
1089 atom_op_test, ATOM_ARG_MC}, {
1090 atom_op_delay, ATOM_UNIT_MILLISEC}, {
1091 atom_op_delay, ATOM_UNIT_MICROSEC}, {
1092 atom_op_calltable, 0}, {
1093 atom_op_repeat, 0}, {
1094 atom_op_clear, ATOM_ARG_REG}, {
1095 atom_op_clear, ATOM_ARG_PS}, {
1096 atom_op_clear, ATOM_ARG_WS}, {
1097 atom_op_clear, ATOM_ARG_FB}, {
1098 atom_op_clear, ATOM_ARG_PLL}, {
1099 atom_op_clear, ATOM_ARG_MC}, {
1100 atom_op_nop, 0}, {
1101 atom_op_eot, 0}, {
1102 atom_op_mask, ATOM_ARG_REG}, {
1103 atom_op_mask, ATOM_ARG_PS}, {
1104 atom_op_mask, ATOM_ARG_WS}, {
1105 atom_op_mask, ATOM_ARG_FB}, {
1106 atom_op_mask, ATOM_ARG_PLL}, {
1107 atom_op_mask, ATOM_ARG_MC}, {
1108 atom_op_postcard, 0}, {
1109 atom_op_beep, 0}, {
1110 atom_op_savereg, 0}, {
1111 atom_op_restorereg, 0}, {
1112 atom_op_setdatablock, 0}, {
1113 atom_op_xor, ATOM_ARG_REG}, {
1114 atom_op_xor, ATOM_ARG_PS}, {
1115 atom_op_xor, ATOM_ARG_WS}, {
1116 atom_op_xor, ATOM_ARG_FB}, {
1117 atom_op_xor, ATOM_ARG_PLL}, {
1118 atom_op_xor, ATOM_ARG_MC}, {
1119 atom_op_shl, ATOM_ARG_REG}, {
1120 atom_op_shl, ATOM_ARG_PS}, {
1121 atom_op_shl, ATOM_ARG_WS}, {
1122 atom_op_shl, ATOM_ARG_FB}, {
1123 atom_op_shl, ATOM_ARG_PLL}, {
1124 atom_op_shl, ATOM_ARG_MC}, {
1125 atom_op_shr, ATOM_ARG_REG}, {
1126 atom_op_shr, ATOM_ARG_PS}, {
1127 atom_op_shr, ATOM_ARG_WS}, {
1128 atom_op_shr, ATOM_ARG_FB}, {
1129 atom_op_shr, ATOM_ARG_PLL}, {
1130 atom_op_shr, ATOM_ARG_MC}, {
1131atom_op_debug, 0},};
1132
c21b0fe6 1133static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params)
771fe6b9
JG		 1134{
1135 int base = CU16(ctx->cmd_table + 4 + 2 * index);
1136 int len, ws, ps, ptr;
1137 unsigned char op;
1138 atom_exec_context ectx;
1139
1140 if (!base)
c21b0fe6 1141 return -EINVAL;
771fe6b9
JG		 1142
1143 len = CU16(base + ATOM_CT_SIZE_PTR);
1144 ws = CU8(base + ATOM_CT_WS_PTR);
1145 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK;
1146 ptr = base + ATOM_CT_CODE_PTR;
1147
1148 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps);
1149
771fe6b9
JG		 1150 ectx.ctx = ctx;
1151 ectx.ps_shift = ps / 4;
1152 ectx.start = base;
1153 ectx.ps = params;
c21b0fe6
JG		 1154 ectx.abort = false;
1155 ectx.last_jump = 0;
771fe6b9
JG		 1156 if (ws)
1157 ectx.ws = kzalloc(4 * ws, GFP_KERNEL);
1158 else
1159 ectx.ws = NULL;
1160
1161 debug_depth++;
1162 while (1) {
1163 op = CU8(ptr++);
1164 if (op < ATOM_OP_NAMES_CNT)
1165 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1);
1166 else
1167 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1);
c21b0fe6
JG		 1168 if (ectx.abort) {
1169 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n",
1170 base, len, ws, ps, ptr - 1);
1171 return -EINVAL;
1172 }
771fe6b9
JG		 1173
1174 if (op < ATOM_OP_CNT && op > 0)
1175 opcode_table[op].func(&ectx, &ptr,
1176 opcode_table[op].arg);
1177 else
1178 break;
1179
1180 if (op == ATOM_OP_EOT)
1181 break;
1182 }
1183 debug_depth--;
1184 SDEBUG("<<\n");
1185
1186 if (ws)
1187 kfree(ectx.ws);
c21b0fe6 1188 return 0;
771fe6b9
JG		 1189}
1190
c21b0fe6 1191int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params)
c31ad97f 1192{
c21b0fe6
JG		 1193 int r;
1194
c31ad97f 1195 mutex_lock(&ctx->mutex);
947bfc83
AD		 1196 /* reset reg block */
1197 ctx->reg_block = 0;
1198 /* reset fb window */
1199 ctx->fb_base = 0;
1200 /* reset io mode */
1201 ctx->io_mode = ATOM_IO_MM;
c21b0fe6 1202 r = atom_execute_table_locked(ctx, index, params);
c31ad97f 1203 mutex_unlock(&ctx->mutex);
c21b0fe6 1204 return r;
c31ad97f
RM		 1205}
1206
771fe6b9
JG		 1207static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 };
1208
1209static void atom_index_iio(struct atom_context *ctx, int base)
1210{
1211 ctx->iio = kzalloc(2 * 256, GFP_KERNEL);
1212 while (CU8(base) == ATOM_IIO_START) {
1213 ctx->iio[CU8(base + 1)] = base + 2;
1214 base += 2;
1215 while (CU8(base) != ATOM_IIO_END)
1216 base += atom_iio_len[CU8(base)];
1217 base += 3;
1218 }
1219}
1220
1221struct atom_context *atom_parse(struct card_info *card, void *bios)
1222{
1223 int base;
1224 struct atom_context *ctx =
1225 kzalloc(sizeof(struct atom_context), GFP_KERNEL);
1226 char *str;
1227 char name[512];
1228 int i;
1229
1230 ctx->card = card;
1231 ctx->bios = bios;
1232
1233 if (CU16(0) != ATOM_BIOS_MAGIC) {
1234 printk(KERN_INFO "Invalid BIOS magic.\n");
1235 kfree(ctx);
1236 return NULL;
1237 }
1238 if (strncmp
1239 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC,
1240 strlen(ATOM_ATI_MAGIC))) {
1241 printk(KERN_INFO "Invalid ATI magic.\n");
1242 kfree(ctx);
1243 return NULL;
1244 }
1245
1246 base = CU16(ATOM_ROM_TABLE_PTR);
1247 if (strncmp
1248 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC,
1249 strlen(ATOM_ROM_MAGIC))) {
1250 printk(KERN_INFO "Invalid ATOM magic.\n");
1251 kfree(ctx);
1252 return NULL;
1253 }
1254
1255 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR);
1256 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR);
1257 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4);
1258
1259 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR));
1260 while (*str && ((*str == '\n') || (*str == '\r')))
1261 str++;
1262 /* name string isn't always 0 terminated */
1263 for (i = 0; i < 511; i++) {
1264 name[i] = str[i];
1265 if (name[i] < '.' || name[i] > 'z') {
1266 name[i] = 0;
1267 break;
1268 }
1269 }
1270 printk(KERN_INFO "ATOM BIOS: %s\n", name);
1271
1272 return ctx;
1273}
1274
1275int atom_asic_init(struct atom_context *ctx)
1276{
1277 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
1278 uint32_t ps[16];
1279 memset(ps, 0, 64);
1280
1281 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
1282 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR));
1283 if (!ps[0] || !ps[1])
1284 return 1;
1285
1286 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT))
1287 return 1;
c21b0fe6 1288 return atom_execute_table(ctx, ATOM_CMD_INIT, ps);
771fe6b9
JG		 1289}
1290
1291void atom_destroy(struct atom_context *ctx)
1292{
1293 if (ctx->iio)
1294 kfree(ctx->iio);
1295 kfree(ctx);
1296}
1297
1298void atom_parse_data_header(struct atom_context *ctx, int index,
1299 uint16_t * size, uint8_t * frev, uint8_t * crev,
1300 uint16_t * data_start)
1301{
1302 int offset = index * 2 + 4;
1303 int idx = CU16(ctx->data_table + offset);
1304
1305 if (size)
1306 *size = CU16(idx);
1307 if (frev)
1308 *frev = CU8(idx + 2);
1309 if (crev)
1310 *crev = CU8(idx + 3);
1311 *data_start = idx;
1312 return;
1313}
1314
1315void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
1316 uint8_t * crev)
1317{
1318 int offset = index * 2 + 4;
1319 int idx = CU16(ctx->cmd_table + offset);
1320
1321 if (frev)
1322 *frev = CU8(idx + 2);
1323 if (crev)
1324 *crev = CU8(idx + 3);
1325 return;
1326}
5801ead6
AD		 1327
1328int atom_allocate_fb_scratch(struct atom_context *ctx)
1329{
1330 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
1331 uint16_t data_offset;
1332 int usage_bytes;
1333 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
1334
1335 atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset);
1336
1337 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
1338
1339 DRM_DEBUG("atom firmware requested %08x %dkb\n",
1340 firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware,
1341 firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb);
1342
1343 usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024;
1344 if (usage_bytes == 0)
1345 usage_bytes = 20 * 1024;
1346 /* allocate some scratch memory */
1347 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
1348 if (!ctx->scratch)
1349 return -ENOMEM;
1350 return 0;
1351}
Clone of davem's net-next-2.6 tree