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Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic...
[linux-2.6-block.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;
55
56 uint32_t *ps, *ws;
57 int ps_shift;
58 uint16_t start;
59} atom_exec_context;
60
61int atom_debug = 0;
c31ad97f 62static void atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params);
771fe6b9
JG		 63void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params);
64
65static uint32_t atom_arg_mask[8] =
66 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000,
670xFF000000 };
68static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 };
69
70static int atom_dst_to_src[8][4] = {
71 /* translate destination alignment field to the source alignment encoding */
72 {0, 0, 0, 0},
73 {1, 2, 3, 0},
74 {1, 2, 3, 0},
75 {1, 2, 3, 0},
76 {4, 5, 6, 7},
77 {4, 5, 6, 7},
78 {4, 5, 6, 7},
79 {4, 5, 6, 7},
80};
81static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 };
82
83static int debug_depth = 0;
84#ifdef ATOM_DEBUG
85static void debug_print_spaces(int n)
86{
87 while (n--)
88 printk(" ");
89}
90
91#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0)
92#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0)
93#else
94#define DEBUG(...) do { } while (0)
95#define SDEBUG(...) do { } while (0)
96#endif
97
98static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
99 uint32_t index, uint32_t data)
100{
101 uint32_t temp = 0xCDCDCDCD;
102 while (1)
103 switch (CU8(base)) {
104 case ATOM_IIO_NOP:
105 base++;
106 break;
107 case ATOM_IIO_READ:
108 temp = ctx->card->reg_read(ctx->card, CU16(base + 1));
109 base += 3;
110 break;
111 case ATOM_IIO_WRITE:
23115b05 112 (void)ctx->card->reg_read(ctx->card, CU16(base + 1));
771fe6b9
JG		 113 ctx->card->reg_write(ctx->card, CU16(base + 1), temp);
114 base += 3;
115 break;
116 case ATOM_IIO_CLEAR:
117 temp &=
118 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
119 CU8(base + 2));
120 base += 3;
121 break;
122 case ATOM_IIO_SET:
123 temp |=
124 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base +
125 2);
126 base += 3;
127 break;
128 case ATOM_IIO_MOVE_INDEX:
129 temp &=
130 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
131 CU8(base + 2));
132 temp |=
133 ((index >> CU8(base + 2)) &
134 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
135 3);
136 base += 4;
137 break;
138 case ATOM_IIO_MOVE_DATA:
139 temp &=
140 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
141 CU8(base + 2));
142 temp |=
143 ((data >> CU8(base + 2)) &
144 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
145 3);
146 base += 4;
147 break;
148 case ATOM_IIO_MOVE_ATTR:
149 temp &=
150 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
151 CU8(base + 2));
152 temp |=
153 ((ctx->
154 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 -
155 CU8
156 (base
157 +
158 1))))
159 << CU8(base + 3);
160 base += 4;
161 break;
162 case ATOM_IIO_END:
163 return temp;
164 default:
165 printk(KERN_INFO "Unknown IIO opcode.\n");
166 return 0;
167 }
168}
169
170static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr,
171 int *ptr, uint32_t *saved, int print)
172{
173 uint32_t idx, val = 0xCDCDCDCD, align, arg;
174 struct atom_context *gctx = ctx->ctx;
175 arg = attr & 7;
176 align = (attr >> 3) & 7;
177 switch (arg) {
178 case ATOM_ARG_REG:
179 idx = U16(*ptr);
180 (*ptr) += 2;
181 if (print)
182 DEBUG("REG[0x%04X]", idx);
183 idx += gctx->reg_block;
184 switch (gctx->io_mode) {
185 case ATOM_IO_MM:
186 val = gctx->card->reg_read(gctx->card, idx);
187 break;
188 case ATOM_IO_PCI:
189 printk(KERN_INFO
190 "PCI registers are not implemented.\n");
191 return 0;
192 case ATOM_IO_SYSIO:
193 printk(KERN_INFO
194 "SYSIO registers are not implemented.\n");
195 return 0;
196 default:
197 if (!(gctx->io_mode & 0x80)) {
198 printk(KERN_INFO "Bad IO mode.\n");
199 return 0;
200 }
201 if (!gctx->iio[gctx->io_mode & 0x7F]) {
202 printk(KERN_INFO
203 "Undefined indirect IO read method %d.\n",
204 gctx->io_mode & 0x7F);
205 return 0;
206 }
207 val =
208 atom_iio_execute(gctx,
209 gctx->iio[gctx->io_mode & 0x7F],
210 idx, 0);
211 }
212 break;
213 case ATOM_ARG_PS:
214 idx = U8(*ptr);
215 (*ptr)++;
ce36f00d
MT		 216 /* get_unaligned_le32 avoids unaligned accesses from atombios
217 * tables, noticed on a DEC Alpha. */
218 val = get_unaligned_le32((u32 *)&ctx->ps[idx]);
771fe6b9
JG		 219 if (print)
220 DEBUG("PS[0x%02X,0x%04X]", idx, val);
221 break;
222 case ATOM_ARG_WS:
223 idx = U8(*ptr);
224 (*ptr)++;
225 if (print)
226 DEBUG("WS[0x%02X]", idx);
227 switch (idx) {
228 case ATOM_WS_QUOTIENT:
229 val = gctx->divmul[0];
230 break;
231 case ATOM_WS_REMAINDER:
232 val = gctx->divmul[1];
233 break;
234 case ATOM_WS_DATAPTR:
235 val = gctx->data_block;
236 break;
237 case ATOM_WS_SHIFT:
238 val = gctx->shift;
239 break;
240 case ATOM_WS_OR_MASK:
241 val = 1 << gctx->shift;
242 break;
243 case ATOM_WS_AND_MASK:
244 val = ~(1 << gctx->shift);
245 break;
246 case ATOM_WS_FB_WINDOW:
247 val = gctx->fb_base;
248 break;
249 case ATOM_WS_ATTRIBUTES:
250 val = gctx->io_attr;
251 break;
e2f8e870
AD		 252 case ATOM_WS_REGPTR:
253 val = gctx->reg_block;
254 break;
771fe6b9
JG		 255 default:
256 val = ctx->ws[idx];
257 }
258 break;
259 case ATOM_ARG_ID:
260 idx = U16(*ptr);
261 (*ptr) += 2;
262 if (print) {
263 if (gctx->data_block)
264 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block);
265 else
266 DEBUG("ID[0x%04X]", idx);
267 }
268 val = U32(idx + gctx->data_block);
269 break;
270 case ATOM_ARG_FB:
271 idx = U8(*ptr);
272 (*ptr)++;
d904ef9b 273 val = gctx->scratch[((gctx->fb_base + idx) / 4)];
771fe6b9
JG		 274 if (print)
275 DEBUG("FB[0x%02X]", idx);
d904ef9b 276 break;
771fe6b9
JG		 277 case ATOM_ARG_IMM:
278 switch (align) {
279 case ATOM_SRC_DWORD:
280 val = U32(*ptr);
281 (*ptr) += 4;
282 if (print)
283 DEBUG("IMM 0x%08X\n", val);
284 return val;
285 case ATOM_SRC_WORD0:
286 case ATOM_SRC_WORD8:
287 case ATOM_SRC_WORD16:
288 val = U16(*ptr);
289 (*ptr) += 2;
290 if (print)
291 DEBUG("IMM 0x%04X\n", val);
292 return val;
293 case ATOM_SRC_BYTE0:
294 case ATOM_SRC_BYTE8:
295 case ATOM_SRC_BYTE16:
296 case ATOM_SRC_BYTE24:
297 val = U8(*ptr);
298 (*ptr)++;
299 if (print)
300 DEBUG("IMM 0x%02X\n", val);
301 return val;
302 }
303 return 0;
304 case ATOM_ARG_PLL:
305 idx = U8(*ptr);
306 (*ptr)++;
307 if (print)
308 DEBUG("PLL[0x%02X]", idx);
309 val = gctx->card->pll_read(gctx->card, idx);
310 break;
311 case ATOM_ARG_MC:
312 idx = U8(*ptr);
313 (*ptr)++;
314 if (print)
315 DEBUG("MC[0x%02X]", idx);
316 val = gctx->card->mc_read(gctx->card, idx);
317 break;
318 }
319 if (saved)
320 *saved = val;
321 val &= atom_arg_mask[align];
322 val >>= atom_arg_shift[align];
323 if (print)
324 switch (align) {
325 case ATOM_SRC_DWORD:
326 DEBUG(".[31:0] -> 0x%08X\n", val);
327 break;
328 case ATOM_SRC_WORD0:
329 DEBUG(".[15:0] -> 0x%04X\n", val);
330 break;
331 case ATOM_SRC_WORD8:
332 DEBUG(".[23:8] -> 0x%04X\n", val);
333 break;
334 case ATOM_SRC_WORD16:
335 DEBUG(".[31:16] -> 0x%04X\n", val);
336 break;
337 case ATOM_SRC_BYTE0:
338 DEBUG(".[7:0] -> 0x%02X\n", val);
339 break;
340 case ATOM_SRC_BYTE8:
341 DEBUG(".[15:8] -> 0x%02X\n", val);
342 break;
343 case ATOM_SRC_BYTE16:
344 DEBUG(".[23:16] -> 0x%02X\n", val);
345 break;
346 case ATOM_SRC_BYTE24:
347 DEBUG(".[31:24] -> 0x%02X\n", val);
348 break;
349 }
350 return val;
351}
352
353static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr)
354{
355 uint32_t align = (attr >> 3) & 7, arg = attr & 7;
356 switch (arg) {
357 case ATOM_ARG_REG:
358 case ATOM_ARG_ID:
359 (*ptr) += 2;
360 break;
361 case ATOM_ARG_PLL:
362 case ATOM_ARG_MC:
363 case ATOM_ARG_PS:
364 case ATOM_ARG_WS:
365 case ATOM_ARG_FB:
366 (*ptr)++;
367 break;
368 case ATOM_ARG_IMM:
369 switch (align) {
370 case ATOM_SRC_DWORD:
371 (*ptr) += 4;
372 return;
373 case ATOM_SRC_WORD0:
374 case ATOM_SRC_WORD8:
375 case ATOM_SRC_WORD16:
376 (*ptr) += 2;
377 return;
378 case ATOM_SRC_BYTE0:
379 case ATOM_SRC_BYTE8:
380 case ATOM_SRC_BYTE16:
381 case ATOM_SRC_BYTE24:
382 (*ptr)++;
383 return;
384 }
385 return;
386 }
387}
388
389static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr)
390{
391 return atom_get_src_int(ctx, attr, ptr, NULL, 1);
392}
393
9f53e793
AD		 394static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr)
395{
396 uint32_t val = 0xCDCDCDCD;
397
398 switch (align) {
399 case ATOM_SRC_DWORD:
400 val = U32(*ptr);
401 (*ptr) += 4;
402 break;
403 case ATOM_SRC_WORD0:
404 case ATOM_SRC_WORD8:
405 case ATOM_SRC_WORD16:
406 val = U16(*ptr);
407 (*ptr) += 2;
408 break;
409 case ATOM_SRC_BYTE0:
410 case ATOM_SRC_BYTE8:
411 case ATOM_SRC_BYTE16:
412 case ATOM_SRC_BYTE24:
413 val = U8(*ptr);
414 (*ptr)++;
415 break;
416 }
417 return val;
418}
419
771fe6b9
JG		 420static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr,
421 int *ptr, uint32_t *saved, int print)
422{
423 return atom_get_src_int(ctx,
424 arg | atom_dst_to_src[(attr >> 3) &
425 7][(attr >> 6) & 3] << 3,
426 ptr, saved, print);
427}
428
429static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr)
430{
431 atom_skip_src_int(ctx,
432 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) &
433 3] << 3, ptr);
434}
435
436static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr,
437 int *ptr, uint32_t val, uint32_t saved)
438{
439 uint32_t align =
440 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val =
441 val, idx;
442 struct atom_context *gctx = ctx->ctx;
443 old_val &= atom_arg_mask[align] >> atom_arg_shift[align];
444 val <<= atom_arg_shift[align];
445 val &= atom_arg_mask[align];
446 saved &= ~atom_arg_mask[align];
447 val |= saved;
448 switch (arg) {
449 case ATOM_ARG_REG:
450 idx = U16(*ptr);
451 (*ptr) += 2;
452 DEBUG("REG[0x%04X]", idx);
453 idx += gctx->reg_block;
454 switch (gctx->io_mode) {
455 case ATOM_IO_MM:
456 if (idx == 0)
457 gctx->card->reg_write(gctx->card, idx,
458 val << 2);
459 else
460 gctx->card->reg_write(gctx->card, idx, val);
461 break;
462 case ATOM_IO_PCI:
463 printk(KERN_INFO
464 "PCI registers are not implemented.\n");
465 return;
466 case ATOM_IO_SYSIO:
467 printk(KERN_INFO
468 "SYSIO registers are not implemented.\n");
469 return;
470 default:
471 if (!(gctx->io_mode & 0x80)) {
472 printk(KERN_INFO "Bad IO mode.\n");
473 return;
474 }
475 if (!gctx->iio[gctx->io_mode & 0xFF]) {
476 printk(KERN_INFO
477 "Undefined indirect IO write method %d.\n",
478 gctx->io_mode & 0x7F);
479 return;
480 }
481 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF],
482 idx, val);
483 }
484 break;
485 case ATOM_ARG_PS:
486 idx = U8(*ptr);
487 (*ptr)++;
488 DEBUG("PS[0x%02X]", idx);
489 ctx->ps[idx] = cpu_to_le32(val);
490 break;
491 case ATOM_ARG_WS:
492 idx = U8(*ptr);
493 (*ptr)++;
494 DEBUG("WS[0x%02X]", idx);
495 switch (idx) {
496 case ATOM_WS_QUOTIENT:
497 gctx->divmul[0] = val;
498 break;
499 case ATOM_WS_REMAINDER:
500 gctx->divmul[1] = val;
501 break;
502 case ATOM_WS_DATAPTR:
503 gctx->data_block = val;
504 break;
505 case ATOM_WS_SHIFT:
506 gctx->shift = val;
507 break;
508 case ATOM_WS_OR_MASK:
509 case ATOM_WS_AND_MASK:
510 break;
511 case ATOM_WS_FB_WINDOW:
512 gctx->fb_base = val;
513 break;
514 case ATOM_WS_ATTRIBUTES:
515 gctx->io_attr = val;
516 break;
e2f8e870
AD		 517 case ATOM_WS_REGPTR:
518 gctx->reg_block = val;
519 break;
771fe6b9
JG		 520 default:
521 ctx->ws[idx] = val;
522 }
523 break;
524 case ATOM_ARG_FB:
525 idx = U8(*ptr);
526 (*ptr)++;
d904ef9b 527 gctx->scratch[((gctx->fb_base + idx) / 4)] = val;
771fe6b9 528 DEBUG("FB[0x%02X]", idx);
d904ef9b 529 break;
771fe6b9
JG		 530 case ATOM_ARG_PLL:
531 idx = U8(*ptr);
532 (*ptr)++;
533 DEBUG("PLL[0x%02X]", idx);
534 gctx->card->pll_write(gctx->card, idx, val);
535 break;
536 case ATOM_ARG_MC:
537 idx = U8(*ptr);
538 (*ptr)++;
539 DEBUG("MC[0x%02X]", idx);
540 gctx->card->mc_write(gctx->card, idx, val);
541 return;
542 }
543 switch (align) {
544 case ATOM_SRC_DWORD:
545 DEBUG(".[31:0] <- 0x%08X\n", old_val);
546 break;
547 case ATOM_SRC_WORD0:
548 DEBUG(".[15:0] <- 0x%04X\n", old_val);
549 break;
550 case ATOM_SRC_WORD8:
551 DEBUG(".[23:8] <- 0x%04X\n", old_val);
552 break;
553 case ATOM_SRC_WORD16:
554 DEBUG(".[31:16] <- 0x%04X\n", old_val);
555 break;
556 case ATOM_SRC_BYTE0:
557 DEBUG(".[7:0] <- 0x%02X\n", old_val);
558 break;
559 case ATOM_SRC_BYTE8:
560 DEBUG(".[15:8] <- 0x%02X\n", old_val);
561 break;
562 case ATOM_SRC_BYTE16:
563 DEBUG(".[23:16] <- 0x%02X\n", old_val);
564 break;
565 case ATOM_SRC_BYTE24:
566 DEBUG(".[31:24] <- 0x%02X\n", old_val);
567 break;
568 }
569}
570
571static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg)
572{
573 uint8_t attr = U8((*ptr)++);
574 uint32_t dst, src, saved;
575 int dptr = *ptr;
576 SDEBUG(" dst: ");
577 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
578 SDEBUG(" src: ");
579 src = atom_get_src(ctx, attr, ptr);
580 dst += src;
581 SDEBUG(" dst: ");
582 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
583}
584
585static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg)
586{
587 uint8_t attr = U8((*ptr)++);
588 uint32_t dst, src, saved;
589 int dptr = *ptr;
590 SDEBUG(" dst: ");
591 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
592 SDEBUG(" src: ");
593 src = atom_get_src(ctx, attr, ptr);
594 dst &= src;
595 SDEBUG(" dst: ");
596 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
597}
598
599static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg)
600{
601 printk("ATOM BIOS beeped!\n");
602}
603
604static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg)
605{
606 int idx = U8((*ptr)++);
607 if (idx < ATOM_TABLE_NAMES_CNT)
608 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]);
609 else
610 SDEBUG(" table: %d\n", idx);
611 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx))
c31ad97f 612 atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift);
771fe6b9
JG		 613}
614
615static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg)
616{
617 uint8_t attr = U8((*ptr)++);
618 uint32_t saved;
619 int dptr = *ptr;
620 attr &= 0x38;
621 attr |= atom_def_dst[attr >> 3] << 6;
622 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
623 SDEBUG(" dst: ");
624 atom_put_dst(ctx, arg, attr, &dptr, 0, saved);
625}
626
627static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg)
628{
629 uint8_t attr = U8((*ptr)++);
630 uint32_t dst, src;
631 SDEBUG(" src1: ");
632 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
633 SDEBUG(" src2: ");
634 src = atom_get_src(ctx, attr, ptr);
635 ctx->ctx->cs_equal = (dst == src);
636 ctx->ctx->cs_above = (dst > src);
637 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE",
638 ctx->ctx->cs_above ? "GT" : "LE");
639}
640
641static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
642{
643 uint8_t count = U8((*ptr)++);
644 SDEBUG(" count: %d\n", count);
645 if (arg == ATOM_UNIT_MICROSEC)
01d45039 646 udelay(count);
771fe6b9
JG		 647 else
648 schedule_timeout_uninterruptible(msecs_to_jiffies(count));
649}
650
651static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg)
652{
653 uint8_t attr = U8((*ptr)++);
654 uint32_t dst, src;
655 SDEBUG(" src1: ");
656 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
657 SDEBUG(" src2: ");
658 src = atom_get_src(ctx, attr, ptr);
659 if (src != 0) {
660 ctx->ctx->divmul[0] = dst / src;
661 ctx->ctx->divmul[1] = dst % src;
662 } else {
663 ctx->ctx->divmul[0] = 0;
664 ctx->ctx->divmul[1] = 0;
665 }
666}
667
668static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg)
669{
670 /* functionally, a nop */
671}
672
673static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
674{
675 int execute = 0, target = U16(*ptr);
676 (*ptr) += 2;
677 switch (arg) {
678 case ATOM_COND_ABOVE:
679 execute = ctx->ctx->cs_above;
680 break;
681 case ATOM_COND_ABOVEOREQUAL:
682 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal;
683 break;
684 case ATOM_COND_ALWAYS:
685 execute = 1;
686 break;
687 case ATOM_COND_BELOW:
688 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal);
689 break;
690 case ATOM_COND_BELOWOREQUAL:
691 execute = !ctx->ctx->cs_above;
692 break;
693 case ATOM_COND_EQUAL:
694 execute = ctx->ctx->cs_equal;
695 break;
696 case ATOM_COND_NOTEQUAL:
697 execute = !ctx->ctx->cs_equal;
698 break;
699 }
700 if (arg != ATOM_COND_ALWAYS)
701 SDEBUG(" taken: %s\n", execute ? "yes" : "no");
702 SDEBUG(" target: 0x%04X\n", target);
703 if (execute)
704 *ptr = ctx->start + target;
705}
706
707static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg)
708{
709 uint8_t attr = U8((*ptr)++);
710 uint32_t dst, src1, src2, saved;
711 int dptr = *ptr;
712 SDEBUG(" dst: ");
713 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
714 SDEBUG(" src1: ");
9f53e793 715 src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
771fe6b9 716 SDEBUG(" src2: ");
e2f8e870 717 src2 = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 718 dst &= src1;
719 dst |= src2;
720 SDEBUG(" dst: ");
721 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
722}
723
724static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg)
725{
726 uint8_t attr = U8((*ptr)++);
727 uint32_t src, saved;
728 int dptr = *ptr;
729 if (((attr >> 3) & 7) != ATOM_SRC_DWORD)
730 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
731 else {
732 atom_skip_dst(ctx, arg, attr, ptr);
733 saved = 0xCDCDCDCD;
734 }
735 SDEBUG(" src: ");
736 src = atom_get_src(ctx, attr, ptr);
737 SDEBUG(" dst: ");
738 atom_put_dst(ctx, arg, attr, &dptr, src, saved);
739}
740
741static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg)
742{
743 uint8_t attr = U8((*ptr)++);
744 uint32_t dst, src;
745 SDEBUG(" src1: ");
746 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
747 SDEBUG(" src2: ");
748 src = atom_get_src(ctx, attr, ptr);
749 ctx->ctx->divmul[0] = dst * src;
750}
751
752static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg)
753{
754 /* nothing */
755}
756
757static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg)
758{
759 uint8_t attr = U8((*ptr)++);
760 uint32_t dst, src, saved;
761 int dptr = *ptr;
762 SDEBUG(" dst: ");
763 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
764 SDEBUG(" src: ");
765 src = atom_get_src(ctx, attr, ptr);
766 dst |= src;
767 SDEBUG(" dst: ");
768 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
769}
770
771static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg)
772{
773 uint8_t val = U8((*ptr)++);
774 SDEBUG("POST card output: 0x%02X\n", val);
775}
776
777static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg)
778{
779 printk(KERN_INFO "unimplemented!\n");
780}
781
782static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg)
783{
784 printk(KERN_INFO "unimplemented!\n");
785}
786
787static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg)
788{
789 printk(KERN_INFO "unimplemented!\n");
790}
791
792static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg)
793{
794 int idx = U8(*ptr);
795 (*ptr)++;
796 SDEBUG(" block: %d\n", idx);
797 if (!idx)
798 ctx->ctx->data_block = 0;
799 else if (idx == 255)
800 ctx->ctx->data_block = ctx->start;
801 else
802 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx);
803 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block);
804}
805
806static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg)
807{
808 uint8_t attr = U8((*ptr)++);
809 SDEBUG(" fb_base: ");
810 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr);
811}
812
813static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg)
814{
815 int port;
816 switch (arg) {
817 case ATOM_PORT_ATI:
818 port = U16(*ptr);
819 if (port < ATOM_IO_NAMES_CNT)
820 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]);
821 else
822 SDEBUG(" port: %d\n", port);
823 if (!port)
824 ctx->ctx->io_mode = ATOM_IO_MM;
825 else
826 ctx->ctx->io_mode = ATOM_IO_IIO | port;
827 (*ptr) += 2;
828 break;
829 case ATOM_PORT_PCI:
830 ctx->ctx->io_mode = ATOM_IO_PCI;
831 (*ptr)++;
832 break;
833 case ATOM_PORT_SYSIO:
834 ctx->ctx->io_mode = ATOM_IO_SYSIO;
835 (*ptr)++;
836 break;
837 }
838}
839
840static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg)
841{
842 ctx->ctx->reg_block = U16(*ptr);
843 (*ptr) += 2;
844 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block);
845}
846
9f53e793
AD		 847static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg)
848{
849 uint8_t attr = U8((*ptr)++), shift;
850 uint32_t saved, dst;
851 int dptr = *ptr;
852 attr &= 0x38;
853 attr |= atom_def_dst[attr >> 3] << 6;
854 SDEBUG(" dst: ");
855 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
856 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
857 SDEBUG(" shift: %d\n", shift);
858 dst <<= shift;
859 SDEBUG(" dst: ");
860 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
861}
862
863static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg)
864{
865 uint8_t attr = U8((*ptr)++), shift;
866 uint32_t saved, dst;
867 int dptr = *ptr;
868 attr &= 0x38;
869 attr |= atom_def_dst[attr >> 3] << 6;
870 SDEBUG(" dst: ");
871 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
872 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
873 SDEBUG(" shift: %d\n", shift);
874 dst >>= shift;
875 SDEBUG(" dst: ");
876 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
877}
878
771fe6b9
JG		 879static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
880{
881 uint8_t attr = U8((*ptr)++), shift;
882 uint32_t saved, dst;
883 int dptr = *ptr;
884 attr &= 0x38;
885 attr |= atom_def_dst[attr >> 3] << 6;
886 SDEBUG(" dst: ");
887 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
9f53e793 888 shift = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 889 SDEBUG(" shift: %d\n", shift);
890 dst <<= shift;
891 SDEBUG(" dst: ");
892 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
893}
894
895static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
896{
897 uint8_t attr = U8((*ptr)++), shift;
898 uint32_t saved, dst;
899 int dptr = *ptr;
900 attr &= 0x38;
901 attr |= atom_def_dst[attr >> 3] << 6;
902 SDEBUG(" dst: ");
903 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
9f53e793 904 shift = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 905 SDEBUG(" shift: %d\n", shift);
906 dst >>= shift;
907 SDEBUG(" dst: ");
908 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
909}
910
911static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg)
912{
913 uint8_t attr = U8((*ptr)++);
914 uint32_t dst, src, saved;
915 int dptr = *ptr;
916 SDEBUG(" dst: ");
917 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
918 SDEBUG(" src: ");
919 src = atom_get_src(ctx, attr, ptr);
920 dst -= src;
921 SDEBUG(" dst: ");
922 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
923}
924
925static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg)
926{
927 uint8_t attr = U8((*ptr)++);
928 uint32_t src, val, target;
929 SDEBUG(" switch: ");
930 src = atom_get_src(ctx, attr, ptr);
931 while (U16(*ptr) != ATOM_CASE_END)
932 if (U8(*ptr) == ATOM_CASE_MAGIC) {
933 (*ptr)++;
934 SDEBUG(" case: ");
935 val =
936 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM,
937 ptr);
938 target = U16(*ptr);
939 if (val == src) {
940 SDEBUG(" target: %04X\n", target);
941 *ptr = ctx->start + target;
942 return;
943 }
944 (*ptr) += 2;
945 } else {
946 printk(KERN_INFO "Bad case.\n");
947 return;
948 }
949 (*ptr) += 2;
950}
951
952static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg)
953{
954 uint8_t attr = U8((*ptr)++);
955 uint32_t dst, src;
956 SDEBUG(" src1: ");
957 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
958 SDEBUG(" src2: ");
959 src = atom_get_src(ctx, attr, ptr);
960 ctx->ctx->cs_equal = ((dst & src) == 0);
961 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE");
962}
963
964static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg)
965{
966 uint8_t attr = U8((*ptr)++);
967 uint32_t dst, src, saved;
968 int dptr = *ptr;
969 SDEBUG(" dst: ");
970 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
971 SDEBUG(" src: ");
972 src = atom_get_src(ctx, attr, ptr);
973 dst ^= src;
974 SDEBUG(" dst: ");
975 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
976}
977
978static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg)
979{
980 printk(KERN_INFO "unimplemented!\n");
981}
982
983static struct {
984 void (*func) (atom_exec_context *, int *, int);
985 int arg;
986} opcode_table[ATOM_OP_CNT] = {
987 {
988 NULL, 0}, {
989 atom_op_move, ATOM_ARG_REG}, {
990 atom_op_move, ATOM_ARG_PS}, {
991 atom_op_move, ATOM_ARG_WS}, {
992 atom_op_move, ATOM_ARG_FB}, {
993 atom_op_move, ATOM_ARG_PLL}, {
994 atom_op_move, ATOM_ARG_MC}, {
995 atom_op_and, ATOM_ARG_REG}, {
996 atom_op_and, ATOM_ARG_PS}, {
997 atom_op_and, ATOM_ARG_WS}, {
998 atom_op_and, ATOM_ARG_FB}, {
999 atom_op_and, ATOM_ARG_PLL}, {
1000 atom_op_and, ATOM_ARG_MC}, {
1001 atom_op_or, ATOM_ARG_REG}, {
1002 atom_op_or, ATOM_ARG_PS}, {
1003 atom_op_or, ATOM_ARG_WS}, {
1004 atom_op_or, ATOM_ARG_FB}, {
1005 atom_op_or, ATOM_ARG_PLL}, {
1006 atom_op_or, ATOM_ARG_MC}, {
9f53e793
AD		 1007 atom_op_shift_left, ATOM_ARG_REG}, {
1008 atom_op_shift_left, ATOM_ARG_PS}, {
1009 atom_op_shift_left, ATOM_ARG_WS}, {
1010 atom_op_shift_left, ATOM_ARG_FB}, {
1011 atom_op_shift_left, ATOM_ARG_PLL}, {
1012 atom_op_shift_left, ATOM_ARG_MC}, {
1013 atom_op_shift_right, ATOM_ARG_REG}, {
1014 atom_op_shift_right, ATOM_ARG_PS}, {
1015 atom_op_shift_right, ATOM_ARG_WS}, {
1016 atom_op_shift_right, ATOM_ARG_FB}, {
1017 atom_op_shift_right, ATOM_ARG_PLL}, {
1018 atom_op_shift_right, ATOM_ARG_MC}, {
771fe6b9
JG		 1019 atom_op_mul, ATOM_ARG_REG}, {
1020 atom_op_mul, ATOM_ARG_PS}, {
1021 atom_op_mul, ATOM_ARG_WS}, {
1022 atom_op_mul, ATOM_ARG_FB}, {
1023 atom_op_mul, ATOM_ARG_PLL}, {
1024 atom_op_mul, ATOM_ARG_MC}, {
1025 atom_op_div, ATOM_ARG_REG}, {
1026 atom_op_div, ATOM_ARG_PS}, {
1027 atom_op_div, ATOM_ARG_WS}, {
1028 atom_op_div, ATOM_ARG_FB}, {
1029 atom_op_div, ATOM_ARG_PLL}, {
1030 atom_op_div, ATOM_ARG_MC}, {
1031 atom_op_add, ATOM_ARG_REG}, {
1032 atom_op_add, ATOM_ARG_PS}, {
1033 atom_op_add, ATOM_ARG_WS}, {
1034 atom_op_add, ATOM_ARG_FB}, {
1035 atom_op_add, ATOM_ARG_PLL}, {
1036 atom_op_add, ATOM_ARG_MC}, {
1037 atom_op_sub, ATOM_ARG_REG}, {
1038 atom_op_sub, ATOM_ARG_PS}, {
1039 atom_op_sub, ATOM_ARG_WS}, {
1040 atom_op_sub, ATOM_ARG_FB}, {
1041 atom_op_sub, ATOM_ARG_PLL}, {
1042 atom_op_sub, ATOM_ARG_MC}, {
1043 atom_op_setport, ATOM_PORT_ATI}, {
1044 atom_op_setport, ATOM_PORT_PCI}, {
1045 atom_op_setport, ATOM_PORT_SYSIO}, {
1046 atom_op_setregblock, 0}, {
1047 atom_op_setfbbase, 0}, {
1048 atom_op_compare, ATOM_ARG_REG}, {
1049 atom_op_compare, ATOM_ARG_PS}, {
1050 atom_op_compare, ATOM_ARG_WS}, {
1051 atom_op_compare, ATOM_ARG_FB}, {
1052 atom_op_compare, ATOM_ARG_PLL}, {
1053 atom_op_compare, ATOM_ARG_MC}, {
1054 atom_op_switch, 0}, {
1055 atom_op_jump, ATOM_COND_ALWAYS}, {
1056 atom_op_jump, ATOM_COND_EQUAL}, {
1057 atom_op_jump, ATOM_COND_BELOW}, {
1058 atom_op_jump, ATOM_COND_ABOVE}, {
1059 atom_op_jump, ATOM_COND_BELOWOREQUAL}, {
1060 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, {
1061 atom_op_jump, ATOM_COND_NOTEQUAL}, {
1062 atom_op_test, ATOM_ARG_REG}, {
1063 atom_op_test, ATOM_ARG_PS}, {
1064 atom_op_test, ATOM_ARG_WS}, {
1065 atom_op_test, ATOM_ARG_FB}, {
1066 atom_op_test, ATOM_ARG_PLL}, {
1067 atom_op_test, ATOM_ARG_MC}, {
1068 atom_op_delay, ATOM_UNIT_MILLISEC}, {
1069 atom_op_delay, ATOM_UNIT_MICROSEC}, {
1070 atom_op_calltable, 0}, {
1071 atom_op_repeat, 0}, {
1072 atom_op_clear, ATOM_ARG_REG}, {
1073 atom_op_clear, ATOM_ARG_PS}, {
1074 atom_op_clear, ATOM_ARG_WS}, {
1075 atom_op_clear, ATOM_ARG_FB}, {
1076 atom_op_clear, ATOM_ARG_PLL}, {
1077 atom_op_clear, ATOM_ARG_MC}, {
1078 atom_op_nop, 0}, {
1079 atom_op_eot, 0}, {
1080 atom_op_mask, ATOM_ARG_REG}, {
1081 atom_op_mask, ATOM_ARG_PS}, {
1082 atom_op_mask, ATOM_ARG_WS}, {
1083 atom_op_mask, ATOM_ARG_FB}, {
1084 atom_op_mask, ATOM_ARG_PLL}, {
1085 atom_op_mask, ATOM_ARG_MC}, {
1086 atom_op_postcard, 0}, {
1087 atom_op_beep, 0}, {
1088 atom_op_savereg, 0}, {
1089 atom_op_restorereg, 0}, {
1090 atom_op_setdatablock, 0}, {
1091 atom_op_xor, ATOM_ARG_REG}, {
1092 atom_op_xor, ATOM_ARG_PS}, {
1093 atom_op_xor, ATOM_ARG_WS}, {
1094 atom_op_xor, ATOM_ARG_FB}, {
1095 atom_op_xor, ATOM_ARG_PLL}, {
1096 atom_op_xor, ATOM_ARG_MC}, {
1097 atom_op_shl, ATOM_ARG_REG}, {
1098 atom_op_shl, ATOM_ARG_PS}, {
1099 atom_op_shl, ATOM_ARG_WS}, {
1100 atom_op_shl, ATOM_ARG_FB}, {
1101 atom_op_shl, ATOM_ARG_PLL}, {
1102 atom_op_shl, ATOM_ARG_MC}, {
1103 atom_op_shr, ATOM_ARG_REG}, {
1104 atom_op_shr, ATOM_ARG_PS}, {
1105 atom_op_shr, ATOM_ARG_WS}, {
1106 atom_op_shr, ATOM_ARG_FB}, {
1107 atom_op_shr, ATOM_ARG_PLL}, {
1108 atom_op_shr, ATOM_ARG_MC}, {
1109atom_op_debug, 0},};
1110
c31ad97f 1111static void atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params)
771fe6b9
JG		 1112{
1113 int base = CU16(ctx->cmd_table + 4 + 2 * index);
1114 int len, ws, ps, ptr;
1115 unsigned char op;
1116 atom_exec_context ectx;
1117
1118 if (!base)
1119 return;
1120
1121 len = CU16(base + ATOM_CT_SIZE_PTR);
1122 ws = CU8(base + ATOM_CT_WS_PTR);
1123 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK;
1124 ptr = base + ATOM_CT_CODE_PTR;
1125
1126 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps);
1127
771fe6b9
JG		 1128 ectx.ctx = ctx;
1129 ectx.ps_shift = ps / 4;
1130 ectx.start = base;
1131 ectx.ps = params;
1132 if (ws)
1133 ectx.ws = kzalloc(4 * ws, GFP_KERNEL);
1134 else
1135 ectx.ws = NULL;
1136
1137 debug_depth++;
1138 while (1) {
1139 op = CU8(ptr++);
1140 if (op < ATOM_OP_NAMES_CNT)
1141 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1);
1142 else
1143 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1);
1144
1145 if (op < ATOM_OP_CNT && op > 0)
1146 opcode_table[op].func(&ectx, &ptr,
1147 opcode_table[op].arg);
1148 else
1149 break;
1150
1151 if (op == ATOM_OP_EOT)
1152 break;
1153 }
1154 debug_depth--;
1155 SDEBUG("<<\n");
1156
1157 if (ws)
1158 kfree(ectx.ws);
1159}
1160
c31ad97f
RM		 1161void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params)
1162{
1163 mutex_lock(&ctx->mutex);
947bfc83
AD		 1164 /* reset reg block */
1165 ctx->reg_block = 0;
1166 /* reset fb window */
1167 ctx->fb_base = 0;
1168 /* reset io mode */
1169 ctx->io_mode = ATOM_IO_MM;
c31ad97f
RM		 1170 atom_execute_table_locked(ctx, index, params);
1171 mutex_unlock(&ctx->mutex);
1172}
1173
771fe6b9
JG		 1174static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 };
1175
1176static void atom_index_iio(struct atom_context *ctx, int base)
1177{
1178 ctx->iio = kzalloc(2 * 256, GFP_KERNEL);
1179 while (CU8(base) == ATOM_IIO_START) {
1180 ctx->iio[CU8(base + 1)] = base + 2;
1181 base += 2;
1182 while (CU8(base) != ATOM_IIO_END)
1183 base += atom_iio_len[CU8(base)];
1184 base += 3;
1185 }
1186}
1187
1188struct atom_context *atom_parse(struct card_info *card, void *bios)
1189{
1190 int base;
1191 struct atom_context *ctx =
1192 kzalloc(sizeof(struct atom_context), GFP_KERNEL);
1193 char *str;
1194 char name[512];
1195 int i;
1196
1197 ctx->card = card;
1198 ctx->bios = bios;
1199
1200 if (CU16(0) != ATOM_BIOS_MAGIC) {
1201 printk(KERN_INFO "Invalid BIOS magic.\n");
1202 kfree(ctx);
1203 return NULL;
1204 }
1205 if (strncmp
1206 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC,
1207 strlen(ATOM_ATI_MAGIC))) {
1208 printk(KERN_INFO "Invalid ATI magic.\n");
1209 kfree(ctx);
1210 return NULL;
1211 }
1212
1213 base = CU16(ATOM_ROM_TABLE_PTR);
1214 if (strncmp
1215 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC,
1216 strlen(ATOM_ROM_MAGIC))) {
1217 printk(KERN_INFO "Invalid ATOM magic.\n");
1218 kfree(ctx);
1219 return NULL;
1220 }
1221
1222 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR);
1223 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR);
1224 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4);
1225
1226 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR));
1227 while (*str && ((*str == '\n') || (*str == '\r')))
1228 str++;
1229 /* name string isn't always 0 terminated */
1230 for (i = 0; i < 511; i++) {
1231 name[i] = str[i];
1232 if (name[i] < '.' || name[i] > 'z') {
1233 name[i] = 0;
1234 break;
1235 }
1236 }
1237 printk(KERN_INFO "ATOM BIOS: %s\n", name);
1238
1239 return ctx;
1240}
1241
1242int atom_asic_init(struct atom_context *ctx)
1243{
1244 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
1245 uint32_t ps[16];
1246 memset(ps, 0, 64);
1247
1248 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
1249 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR));
1250 if (!ps[0] || !ps[1])
1251 return 1;
1252
1253 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT))
1254 return 1;
1255 atom_execute_table(ctx, ATOM_CMD_INIT, ps);
1256
1257 return 0;
1258}
1259
1260void atom_destroy(struct atom_context *ctx)
1261{
1262 if (ctx->iio)
1263 kfree(ctx->iio);
1264 kfree(ctx);
1265}
1266
1267void atom_parse_data_header(struct atom_context *ctx, int index,
1268 uint16_t * size, uint8_t * frev, uint8_t * crev,
1269 uint16_t * data_start)
1270{
1271 int offset = index * 2 + 4;
1272 int idx = CU16(ctx->data_table + offset);
1273
1274 if (size)
1275 *size = CU16(idx);
1276 if (frev)
1277 *frev = CU8(idx + 2);
1278 if (crev)
1279 *crev = CU8(idx + 3);
1280 *data_start = idx;
1281 return;
1282}
1283
1284void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
1285 uint8_t * crev)
1286{
1287 int offset = index * 2 + 4;
1288 int idx = CU16(ctx->cmd_table + offset);
1289
1290 if (frev)
1291 *frev = CU8(idx + 2);
1292 if (crev)
1293 *crev = CU8(idx + 3);
1294 return;
1295}
5801ead6
AD		 1296
1297int atom_allocate_fb_scratch(struct atom_context *ctx)
1298{
1299 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
1300 uint16_t data_offset;
1301 int usage_bytes;
1302 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
1303
1304 atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset);
1305
1306 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
1307
1308 DRM_DEBUG("atom firmware requested %08x %dkb\n",
1309 firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware,
1310 firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb);
1311
1312 usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024;
1313 if (usage_bytes == 0)
1314 usage_bytes = 20 * 1024;
1315 /* allocate some scratch memory */
1316 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
1317 if (!ctx->scratch)
1318 return -ENOMEM;
1319 return 0;
1320}
Linux 6.x block layer and io_uring tree(s)