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Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6
[deliverable/linux.git] / drivers / gpu / drm / radeon / atom.c
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
36 #define ATOM_COND_ABOVE 0
37 #define ATOM_COND_ABOVEOREQUAL 1
38 #define ATOM_COND_ALWAYS 2
39 #define ATOM_COND_BELOW 3
40 #define ATOM_COND_BELOWOREQUAL 4
41 #define ATOM_COND_EQUAL 5
42 #define ATOM_COND_NOTEQUAL 6
43
44 #define ATOM_PORT_ATI 0
45 #define ATOM_PORT_PCI 1
46 #define ATOM_PORT_SYSIO 2
47
48 #define ATOM_UNIT_MICROSEC 0
49 #define ATOM_UNIT_MILLISEC 1
50
51 #define PLL_INDEX 2
52 #define PLL_DATA 3
53
54 typedef struct {
55 struct atom_context *ctx;
56 uint32_t *ps, *ws;
57 int ps_shift;
58 uint16_t start;
59 unsigned last_jump;
60 unsigned long last_jump_jiffies;
61 bool abort;
62 } atom_exec_context;
63
64 int atom_debug = 0;
65 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params);
66 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params);
67
68 static uint32_t atom_arg_mask[8] =
69 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000,
70 0xFF000000 };
71 static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 };
72
73 static int atom_dst_to_src[8][4] = {
74 /* translate destination alignment field to the source alignment encoding */
75 {0, 0, 0, 0},
76 {1, 2, 3, 0},
77 {1, 2, 3, 0},
78 {1, 2, 3, 0},
79 {4, 5, 6, 7},
80 {4, 5, 6, 7},
81 {4, 5, 6, 7},
82 {4, 5, 6, 7},
83 };
84 static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 };
85
86 static int debug_depth = 0;
87 #ifdef ATOM_DEBUG
88 static void debug_print_spaces(int n)
89 {
90 while (n--)
91 printk(" ");
92 }
93
94 #define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0)
95 #define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0)
96 #else
97 #define DEBUG(...) do { } while (0)
98 #define SDEBUG(...) do { } while (0)
99 #endif
100
101 static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
102 uint32_t index, uint32_t data)
103 {
104 uint32_t temp = 0xCDCDCDCD;
105 while (1)
106 switch (CU8(base)) {
107 case ATOM_IIO_NOP:
108 base++;
109 break;
110 case ATOM_IIO_READ:
111 temp = ctx->card->ioreg_read(ctx->card, CU16(base + 1));
112 base += 3;
113 break;
114 case ATOM_IIO_WRITE:
115 ctx->card->ioreg_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
172 static 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)++;
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]);
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;
254 case ATOM_WS_REGPTR:
255 val = gctx->reg_block;
256 break;
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)++;
275 val = gctx->scratch[((gctx->fb_base + idx) / 4)];
276 if (print)
277 DEBUG("FB[0x%02X]", idx);
278 break;
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
355 static 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
391 static 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
396 static 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
422 static 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
431 static 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
438 static 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;
519 case ATOM_WS_REGPTR:
520 gctx->reg_block = val;
521 break;
522 default:
523 ctx->ws[idx] = val;
524 }
525 break;
526 case ATOM_ARG_FB:
527 idx = U8(*ptr);
528 (*ptr)++;
529 gctx->scratch[((gctx->fb_base + idx) / 4)] = val;
530 DEBUG("FB[0x%02X]", idx);
531 break;
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
573 static 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
587 static 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
601 static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg)
602 {
603 printk("ATOM BIOS beeped!\n");
604 }
605
606 static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg)
607 {
608 int idx = U8((*ptr)++);
609 int r = 0;
610
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))
616 r = atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift);
617 if (r) {
618 ctx->abort = true;
619 }
620 }
621
622 static 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
634 static 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
648 static 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)
653 udelay(count);
654 else
655 schedule_timeout_uninterruptible(msecs_to_jiffies(count));
656 }
657
658 static 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
675 static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg)
676 {
677 /* functionally, a nop */
678 }
679
680 static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
681 {
682 int execute = 0, target = U16(*ptr);
683 unsigned long cjiffies;
684
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);
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) > 5000)) {
718 DRM_ERROR("atombios stuck in loop for more than 5secs 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 }
729 *ptr = ctx->start + target;
730 }
731 }
732
733 static 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: ");
741 src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
742 SDEBUG(" src2: ");
743 src2 = atom_get_src(ctx, attr, ptr);
744 dst &= src1;
745 dst |= src2;
746 SDEBUG(" dst: ");
747 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
748 }
749
750 static 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
767 static 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
778 static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg)
779 {
780 /* nothing */
781 }
782
783 static 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
797 static 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
803 static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg)
804 {
805 printk(KERN_INFO "unimplemented!\n");
806 }
807
808 static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg)
809 {
810 printk(KERN_INFO "unimplemented!\n");
811 }
812
813 static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg)
814 {
815 printk(KERN_INFO "unimplemented!\n");
816 }
817
818 static 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
832 static 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
839 static 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
866 static 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
873 static 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
889 static 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
905 static 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;
910 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
911 SDEBUG(" dst: ");
912 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
913 /* op needs to full dst value */
914 dst = saved;
915 shift = atom_get_src(ctx, attr, ptr);
916 SDEBUG(" shift: %d\n", shift);
917 dst <<= shift;
918 dst &= atom_arg_mask[dst_align];
919 dst >>= atom_arg_shift[dst_align];
920 SDEBUG(" dst: ");
921 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
922 }
923
924 static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
925 {
926 uint8_t attr = U8((*ptr)++), shift;
927 uint32_t saved, dst;
928 int dptr = *ptr;
929 uint32_t dst_align = atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3];
930 SDEBUG(" dst: ");
931 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
932 /* op needs to full dst value */
933 dst = saved;
934 shift = atom_get_src(ctx, attr, ptr);
935 SDEBUG(" shift: %d\n", shift);
936 dst >>= shift;
937 dst &= atom_arg_mask[dst_align];
938 dst >>= atom_arg_shift[dst_align];
939 SDEBUG(" dst: ");
940 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
941 }
942
943 static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg)
944 {
945 uint8_t attr = U8((*ptr)++);
946 uint32_t dst, src, saved;
947 int dptr = *ptr;
948 SDEBUG(" dst: ");
949 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
950 SDEBUG(" src: ");
951 src = atom_get_src(ctx, attr, ptr);
952 dst -= src;
953 SDEBUG(" dst: ");
954 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
955 }
956
957 static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg)
958 {
959 uint8_t attr = U8((*ptr)++);
960 uint32_t src, val, target;
961 SDEBUG(" switch: ");
962 src = atom_get_src(ctx, attr, ptr);
963 while (U16(*ptr) != ATOM_CASE_END)
964 if (U8(*ptr) == ATOM_CASE_MAGIC) {
965 (*ptr)++;
966 SDEBUG(" case: ");
967 val =
968 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM,
969 ptr);
970 target = U16(*ptr);
971 if (val == src) {
972 SDEBUG(" target: %04X\n", target);
973 *ptr = ctx->start + target;
974 return;
975 }
976 (*ptr) += 2;
977 } else {
978 printk(KERN_INFO "Bad case.\n");
979 return;
980 }
981 (*ptr) += 2;
982 }
983
984 static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg)
985 {
986 uint8_t attr = U8((*ptr)++);
987 uint32_t dst, src;
988 SDEBUG(" src1: ");
989 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
990 SDEBUG(" src2: ");
991 src = atom_get_src(ctx, attr, ptr);
992 ctx->ctx->cs_equal = ((dst & src) == 0);
993 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE");
994 }
995
996 static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg)
997 {
998 uint8_t attr = U8((*ptr)++);
999 uint32_t dst, src, saved;
1000 int dptr = *ptr;
1001 SDEBUG(" dst: ");
1002 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
1003 SDEBUG(" src: ");
1004 src = atom_get_src(ctx, attr, ptr);
1005 dst ^= src;
1006 SDEBUG(" dst: ");
1007 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
1008 }
1009
1010 static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg)
1011 {
1012 printk(KERN_INFO "unimplemented!\n");
1013 }
1014
1015 static struct {
1016 void (*func) (atom_exec_context *, int *, int);
1017 int arg;
1018 } opcode_table[ATOM_OP_CNT] = {
1019 {
1020 NULL, 0}, {
1021 atom_op_move, ATOM_ARG_REG}, {
1022 atom_op_move, ATOM_ARG_PS}, {
1023 atom_op_move, ATOM_ARG_WS}, {
1024 atom_op_move, ATOM_ARG_FB}, {
1025 atom_op_move, ATOM_ARG_PLL}, {
1026 atom_op_move, ATOM_ARG_MC}, {
1027 atom_op_and, ATOM_ARG_REG}, {
1028 atom_op_and, ATOM_ARG_PS}, {
1029 atom_op_and, ATOM_ARG_WS}, {
1030 atom_op_and, ATOM_ARG_FB}, {
1031 atom_op_and, ATOM_ARG_PLL}, {
1032 atom_op_and, ATOM_ARG_MC}, {
1033 atom_op_or, ATOM_ARG_REG}, {
1034 atom_op_or, ATOM_ARG_PS}, {
1035 atom_op_or, ATOM_ARG_WS}, {
1036 atom_op_or, ATOM_ARG_FB}, {
1037 atom_op_or, ATOM_ARG_PLL}, {
1038 atom_op_or, ATOM_ARG_MC}, {
1039 atom_op_shift_left, ATOM_ARG_REG}, {
1040 atom_op_shift_left, ATOM_ARG_PS}, {
1041 atom_op_shift_left, ATOM_ARG_WS}, {
1042 atom_op_shift_left, ATOM_ARG_FB}, {
1043 atom_op_shift_left, ATOM_ARG_PLL}, {
1044 atom_op_shift_left, ATOM_ARG_MC}, {
1045 atom_op_shift_right, ATOM_ARG_REG}, {
1046 atom_op_shift_right, ATOM_ARG_PS}, {
1047 atom_op_shift_right, ATOM_ARG_WS}, {
1048 atom_op_shift_right, ATOM_ARG_FB}, {
1049 atom_op_shift_right, ATOM_ARG_PLL}, {
1050 atom_op_shift_right, ATOM_ARG_MC}, {
1051 atom_op_mul, ATOM_ARG_REG}, {
1052 atom_op_mul, ATOM_ARG_PS}, {
1053 atom_op_mul, ATOM_ARG_WS}, {
1054 atom_op_mul, ATOM_ARG_FB}, {
1055 atom_op_mul, ATOM_ARG_PLL}, {
1056 atom_op_mul, ATOM_ARG_MC}, {
1057 atom_op_div, ATOM_ARG_REG}, {
1058 atom_op_div, ATOM_ARG_PS}, {
1059 atom_op_div, ATOM_ARG_WS}, {
1060 atom_op_div, ATOM_ARG_FB}, {
1061 atom_op_div, ATOM_ARG_PLL}, {
1062 atom_op_div, ATOM_ARG_MC}, {
1063 atom_op_add, ATOM_ARG_REG}, {
1064 atom_op_add, ATOM_ARG_PS}, {
1065 atom_op_add, ATOM_ARG_WS}, {
1066 atom_op_add, ATOM_ARG_FB}, {
1067 atom_op_add, ATOM_ARG_PLL}, {
1068 atom_op_add, ATOM_ARG_MC}, {
1069 atom_op_sub, ATOM_ARG_REG}, {
1070 atom_op_sub, ATOM_ARG_PS}, {
1071 atom_op_sub, ATOM_ARG_WS}, {
1072 atom_op_sub, ATOM_ARG_FB}, {
1073 atom_op_sub, ATOM_ARG_PLL}, {
1074 atom_op_sub, ATOM_ARG_MC}, {
1075 atom_op_setport, ATOM_PORT_ATI}, {
1076 atom_op_setport, ATOM_PORT_PCI}, {
1077 atom_op_setport, ATOM_PORT_SYSIO}, {
1078 atom_op_setregblock, 0}, {
1079 atom_op_setfbbase, 0}, {
1080 atom_op_compare, ATOM_ARG_REG}, {
1081 atom_op_compare, ATOM_ARG_PS}, {
1082 atom_op_compare, ATOM_ARG_WS}, {
1083 atom_op_compare, ATOM_ARG_FB}, {
1084 atom_op_compare, ATOM_ARG_PLL}, {
1085 atom_op_compare, ATOM_ARG_MC}, {
1086 atom_op_switch, 0}, {
1087 atom_op_jump, ATOM_COND_ALWAYS}, {
1088 atom_op_jump, ATOM_COND_EQUAL}, {
1089 atom_op_jump, ATOM_COND_BELOW}, {
1090 atom_op_jump, ATOM_COND_ABOVE}, {
1091 atom_op_jump, ATOM_COND_BELOWOREQUAL}, {
1092 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, {
1093 atom_op_jump, ATOM_COND_NOTEQUAL}, {
1094 atom_op_test, ATOM_ARG_REG}, {
1095 atom_op_test, ATOM_ARG_PS}, {
1096 atom_op_test, ATOM_ARG_WS}, {
1097 atom_op_test, ATOM_ARG_FB}, {
1098 atom_op_test, ATOM_ARG_PLL}, {
1099 atom_op_test, ATOM_ARG_MC}, {
1100 atom_op_delay, ATOM_UNIT_MILLISEC}, {
1101 atom_op_delay, ATOM_UNIT_MICROSEC}, {
1102 atom_op_calltable, 0}, {
1103 atom_op_repeat, 0}, {
1104 atom_op_clear, ATOM_ARG_REG}, {
1105 atom_op_clear, ATOM_ARG_PS}, {
1106 atom_op_clear, ATOM_ARG_WS}, {
1107 atom_op_clear, ATOM_ARG_FB}, {
1108 atom_op_clear, ATOM_ARG_PLL}, {
1109 atom_op_clear, ATOM_ARG_MC}, {
1110 atom_op_nop, 0}, {
1111 atom_op_eot, 0}, {
1112 atom_op_mask, ATOM_ARG_REG}, {
1113 atom_op_mask, ATOM_ARG_PS}, {
1114 atom_op_mask, ATOM_ARG_WS}, {
1115 atom_op_mask, ATOM_ARG_FB}, {
1116 atom_op_mask, ATOM_ARG_PLL}, {
1117 atom_op_mask, ATOM_ARG_MC}, {
1118 atom_op_postcard, 0}, {
1119 atom_op_beep, 0}, {
1120 atom_op_savereg, 0}, {
1121 atom_op_restorereg, 0}, {
1122 atom_op_setdatablock, 0}, {
1123 atom_op_xor, ATOM_ARG_REG}, {
1124 atom_op_xor, ATOM_ARG_PS}, {
1125 atom_op_xor, ATOM_ARG_WS}, {
1126 atom_op_xor, ATOM_ARG_FB}, {
1127 atom_op_xor, ATOM_ARG_PLL}, {
1128 atom_op_xor, ATOM_ARG_MC}, {
1129 atom_op_shl, ATOM_ARG_REG}, {
1130 atom_op_shl, ATOM_ARG_PS}, {
1131 atom_op_shl, ATOM_ARG_WS}, {
1132 atom_op_shl, ATOM_ARG_FB}, {
1133 atom_op_shl, ATOM_ARG_PLL}, {
1134 atom_op_shl, ATOM_ARG_MC}, {
1135 atom_op_shr, ATOM_ARG_REG}, {
1136 atom_op_shr, ATOM_ARG_PS}, {
1137 atom_op_shr, ATOM_ARG_WS}, {
1138 atom_op_shr, ATOM_ARG_FB}, {
1139 atom_op_shr, ATOM_ARG_PLL}, {
1140 atom_op_shr, ATOM_ARG_MC}, {
1141 atom_op_debug, 0},};
1142
1143 static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params)
1144 {
1145 int base = CU16(ctx->cmd_table + 4 + 2 * index);
1146 int len, ws, ps, ptr;
1147 unsigned char op;
1148 atom_exec_context ectx;
1149 int ret = 0;
1150
1151 if (!base)
1152 return -EINVAL;
1153
1154 len = CU16(base + ATOM_CT_SIZE_PTR);
1155 ws = CU8(base + ATOM_CT_WS_PTR);
1156 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK;
1157 ptr = base + ATOM_CT_CODE_PTR;
1158
1159 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps);
1160
1161 ectx.ctx = ctx;
1162 ectx.ps_shift = ps / 4;
1163 ectx.start = base;
1164 ectx.ps = params;
1165 ectx.abort = false;
1166 ectx.last_jump = 0;
1167 if (ws)
1168 ectx.ws = kzalloc(4 * ws, GFP_KERNEL);
1169 else
1170 ectx.ws = NULL;
1171
1172 debug_depth++;
1173 while (1) {
1174 op = CU8(ptr++);
1175 if (op < ATOM_OP_NAMES_CNT)
1176 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1);
1177 else
1178 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1);
1179 if (ectx.abort) {
1180 DRM_ERROR("atombios stuck executing %04X (len %d, WS %d, PS %d) @ 0x%04X\n",
1181 base, len, ws, ps, ptr - 1);
1182 ret = -EINVAL;
1183 goto free;
1184 }
1185
1186 if (op < ATOM_OP_CNT && op > 0)
1187 opcode_table[op].func(&ectx, &ptr,
1188 opcode_table[op].arg);
1189 else
1190 break;
1191
1192 if (op == ATOM_OP_EOT)
1193 break;
1194 }
1195 debug_depth--;
1196 SDEBUG("<<\n");
1197
1198 free:
1199 if (ws)
1200 kfree(ectx.ws);
1201 return ret;
1202 }
1203
1204 int atom_execute_table(struct atom_context *ctx, int index, uint32_t * params)
1205 {
1206 int r;
1207
1208 mutex_lock(&ctx->mutex);
1209 /* reset reg block */
1210 ctx->reg_block = 0;
1211 /* reset fb window */
1212 ctx->fb_base = 0;
1213 /* reset io mode */
1214 ctx->io_mode = ATOM_IO_MM;
1215 r = atom_execute_table_locked(ctx, index, params);
1216 mutex_unlock(&ctx->mutex);
1217 return r;
1218 }
1219
1220 static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 };
1221
1222 static void atom_index_iio(struct atom_context *ctx, int base)
1223 {
1224 ctx->iio = kzalloc(2 * 256, GFP_KERNEL);
1225 while (CU8(base) == ATOM_IIO_START) {
1226 ctx->iio[CU8(base + 1)] = base + 2;
1227 base += 2;
1228 while (CU8(base) != ATOM_IIO_END)
1229 base += atom_iio_len[CU8(base)];
1230 base += 3;
1231 }
1232 }
1233
1234 struct atom_context *atom_parse(struct card_info *card, void *bios)
1235 {
1236 int base;
1237 struct atom_context *ctx =
1238 kzalloc(sizeof(struct atom_context), GFP_KERNEL);
1239 char *str;
1240 char name[512];
1241 int i;
1242
1243 ctx->card = card;
1244 ctx->bios = bios;
1245
1246 if (CU16(0) != ATOM_BIOS_MAGIC) {
1247 printk(KERN_INFO "Invalid BIOS magic.\n");
1248 kfree(ctx);
1249 return NULL;
1250 }
1251 if (strncmp
1252 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC,
1253 strlen(ATOM_ATI_MAGIC))) {
1254 printk(KERN_INFO "Invalid ATI magic.\n");
1255 kfree(ctx);
1256 return NULL;
1257 }
1258
1259 base = CU16(ATOM_ROM_TABLE_PTR);
1260 if (strncmp
1261 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC,
1262 strlen(ATOM_ROM_MAGIC))) {
1263 printk(KERN_INFO "Invalid ATOM magic.\n");
1264 kfree(ctx);
1265 return NULL;
1266 }
1267
1268 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR);
1269 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR);
1270 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4);
1271
1272 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR));
1273 while (*str && ((*str == '\n') || (*str == '\r')))
1274 str++;
1275 /* name string isn't always 0 terminated */
1276 for (i = 0; i < 511; i++) {
1277 name[i] = str[i];
1278 if (name[i] < '.' || name[i] > 'z') {
1279 name[i] = 0;
1280 break;
1281 }
1282 }
1283 printk(KERN_INFO "ATOM BIOS: %s\n", name);
1284
1285 return ctx;
1286 }
1287
1288 int atom_asic_init(struct atom_context *ctx)
1289 {
1290 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
1291 uint32_t ps[16];
1292 memset(ps, 0, 64);
1293
1294 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
1295 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR));
1296 if (!ps[0] || !ps[1])
1297 return 1;
1298
1299 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT))
1300 return 1;
1301 return atom_execute_table(ctx, ATOM_CMD_INIT, ps);
1302 }
1303
1304 void atom_destroy(struct atom_context *ctx)
1305 {
1306 if (ctx->iio)
1307 kfree(ctx->iio);
1308 kfree(ctx);
1309 }
1310
1311 bool atom_parse_data_header(struct atom_context *ctx, int index,
1312 uint16_t * size, uint8_t * frev, uint8_t * crev,
1313 uint16_t * data_start)
1314 {
1315 int offset = index * 2 + 4;
1316 int idx = CU16(ctx->data_table + offset);
1317 u16 *mdt = (u16 *)(ctx->bios + ctx->data_table + 4);
1318
1319 if (!mdt[index])
1320 return false;
1321
1322 if (size)
1323 *size = CU16(idx);
1324 if (frev)
1325 *frev = CU8(idx + 2);
1326 if (crev)
1327 *crev = CU8(idx + 3);
1328 *data_start = idx;
1329 return true;
1330 }
1331
1332 bool atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
1333 uint8_t * crev)
1334 {
1335 int offset = index * 2 + 4;
1336 int idx = CU16(ctx->cmd_table + offset);
1337 u16 *mct = (u16 *)(ctx->bios + ctx->cmd_table + 4);
1338
1339 if (!mct[index])
1340 return false;
1341
1342 if (frev)
1343 *frev = CU8(idx + 2);
1344 if (crev)
1345 *crev = CU8(idx + 3);
1346 return true;
1347 }
1348
1349 int atom_allocate_fb_scratch(struct atom_context *ctx)
1350 {
1351 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
1352 uint16_t data_offset;
1353 int usage_bytes = 0;
1354 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
1355
1356 if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
1357 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
1358
1359 DRM_DEBUG("atom firmware requested %08x %dkb\n",
1360 firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware,
1361 firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb);
1362
1363 usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024;
1364 }
1365 if (usage_bytes == 0)
1366 usage_bytes = 20 * 1024;
1367 /* allocate some scratch memory */
1368 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
1369 if (!ctx->scratch)
1370 return -ENOMEM;
1371 return 0;
1372 }
Linux kernel - Deliverables
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