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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[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>
27
28#define ATOM_DEBUG
29
30#include "atom.h"
31#include "atom-names.h"
32#include "atom-bits.h"
33
34#define ATOM_COND_ABOVE 0
35#define ATOM_COND_ABOVEOREQUAL 1
36#define ATOM_COND_ALWAYS 2
37#define ATOM_COND_BELOW 3
38#define ATOM_COND_BELOWOREQUAL 4
39#define ATOM_COND_EQUAL 5
40#define ATOM_COND_NOTEQUAL 6
41
42#define ATOM_PORT_ATI 0
43#define ATOM_PORT_PCI 1
44#define ATOM_PORT_SYSIO 2
45
46#define ATOM_UNIT_MICROSEC 0
47#define ATOM_UNIT_MILLISEC 1
48
49#define PLL_INDEX 2
50#define PLL_DATA 3
51
52typedef struct {
53 struct atom_context *ctx;
54
55 uint32_t *ps, *ws;
56 int ps_shift;
57 uint16_t start;
58} atom_exec_context;
59
60int atom_debug = 0;
c31ad97f 61static void atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params);
771fe6b9
JG		 62void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params);
63
64static uint32_t atom_arg_mask[8] =
65 { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000,
660xFF000000 };
67static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 };
68
69static int atom_dst_to_src[8][4] = {
70 /* translate destination alignment field to the source alignment encoding */
71 {0, 0, 0, 0},
72 {1, 2, 3, 0},
73 {1, 2, 3, 0},
74 {1, 2, 3, 0},
75 {4, 5, 6, 7},
76 {4, 5, 6, 7},
77 {4, 5, 6, 7},
78 {4, 5, 6, 7},
79};
80static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 };
81
82static int debug_depth = 0;
83#ifdef ATOM_DEBUG
84static void debug_print_spaces(int n)
85{
86 while (n--)
87 printk(" ");
88}
89
90#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0)
91#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0)
92#else
93#define DEBUG(...) do { } while (0)
94#define SDEBUG(...) do { } while (0)
95#endif
96
97static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
98 uint32_t index, uint32_t data)
99{
100 uint32_t temp = 0xCDCDCDCD;
101 while (1)
102 switch (CU8(base)) {
103 case ATOM_IIO_NOP:
104 base++;
105 break;
106 case ATOM_IIO_READ:
107 temp = ctx->card->reg_read(ctx->card, CU16(base + 1));
108 base += 3;
109 break;
110 case ATOM_IIO_WRITE:
23115b05 111 (void)ctx->card->reg_read(ctx->card, CU16(base + 1));
771fe6b9
JG		 112 ctx->card->reg_write(ctx->card, CU16(base + 1), temp);
113 base += 3;
114 break;
115 case ATOM_IIO_CLEAR:
116 temp &=
117 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
118 CU8(base + 2));
119 base += 3;
120 break;
121 case ATOM_IIO_SET:
122 temp |=
123 (0xFFFFFFFF >> (32 - CU8(base + 1))) << CU8(base +
124 2);
125 base += 3;
126 break;
127 case ATOM_IIO_MOVE_INDEX:
128 temp &=
129 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
130 CU8(base + 2));
131 temp |=
132 ((index >> CU8(base + 2)) &
133 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
134 3);
135 base += 4;
136 break;
137 case ATOM_IIO_MOVE_DATA:
138 temp &=
139 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
140 CU8(base + 2));
141 temp |=
142 ((data >> CU8(base + 2)) &
143 (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
144 3);
145 base += 4;
146 break;
147 case ATOM_IIO_MOVE_ATTR:
148 temp &=
149 ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
150 CU8(base + 2));
151 temp |=
152 ((ctx->
153 io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 -
154 CU8
155 (base
156 +
157 1))))
158 << CU8(base + 3);
159 base += 4;
160 break;
161 case ATOM_IIO_END:
162 return temp;
163 default:
164 printk(KERN_INFO "Unknown IIO opcode.\n");
165 return 0;
166 }
167}
168
169static uint32_t atom_get_src_int(atom_exec_context *ctx, uint8_t attr,
170 int *ptr, uint32_t *saved, int print)
171{
172 uint32_t idx, val = 0xCDCDCDCD, align, arg;
173 struct atom_context *gctx = ctx->ctx;
174 arg = attr & 7;
175 align = (attr >> 3) & 7;
176 switch (arg) {
177 case ATOM_ARG_REG:
178 idx = U16(*ptr);
179 (*ptr) += 2;
180 if (print)
181 DEBUG("REG[0x%04X]", idx);
182 idx += gctx->reg_block;
183 switch (gctx->io_mode) {
184 case ATOM_IO_MM:
185 val = gctx->card->reg_read(gctx->card, idx);
186 break;
187 case ATOM_IO_PCI:
188 printk(KERN_INFO
189 "PCI registers are not implemented.\n");
190 return 0;
191 case ATOM_IO_SYSIO:
192 printk(KERN_INFO
193 "SYSIO registers are not implemented.\n");
194 return 0;
195 default:
196 if (!(gctx->io_mode & 0x80)) {
197 printk(KERN_INFO "Bad IO mode.\n");
198 return 0;
199 }
200 if (!gctx->iio[gctx->io_mode & 0x7F]) {
201 printk(KERN_INFO
202 "Undefined indirect IO read method %d.\n",
203 gctx->io_mode & 0x7F);
204 return 0;
205 }
206 val =
207 atom_iio_execute(gctx,
208 gctx->iio[gctx->io_mode & 0x7F],
209 idx, 0);
210 }
211 break;
212 case ATOM_ARG_PS:
213 idx = U8(*ptr);
214 (*ptr)++;
215 val = le32_to_cpu(ctx->ps[idx]);
216 if (print)
217 DEBUG("PS[0x%02X,0x%04X]", idx, val);
218 break;
219 case ATOM_ARG_WS:
220 idx = U8(*ptr);
221 (*ptr)++;
222 if (print)
223 DEBUG("WS[0x%02X]", idx);
224 switch (idx) {
225 case ATOM_WS_QUOTIENT:
226 val = gctx->divmul[0];
227 break;
228 case ATOM_WS_REMAINDER:
229 val = gctx->divmul[1];
230 break;
231 case ATOM_WS_DATAPTR:
232 val = gctx->data_block;
233 break;
234 case ATOM_WS_SHIFT:
235 val = gctx->shift;
236 break;
237 case ATOM_WS_OR_MASK:
238 val = 1 << gctx->shift;
239 break;
240 case ATOM_WS_AND_MASK:
241 val = ~(1 << gctx->shift);
242 break;
243 case ATOM_WS_FB_WINDOW:
244 val = gctx->fb_base;
245 break;
246 case ATOM_WS_ATTRIBUTES:
247 val = gctx->io_attr;
248 break;
e2f8e870
AD		 249 case ATOM_WS_REGPTR:
250 val = gctx->reg_block;
251 break;
771fe6b9
JG		 252 default:
253 val = ctx->ws[idx];
254 }
255 break;
256 case ATOM_ARG_ID:
257 idx = U16(*ptr);
258 (*ptr) += 2;
259 if (print) {
260 if (gctx->data_block)
261 DEBUG("ID[0x%04X+%04X]", idx, gctx->data_block);
262 else
263 DEBUG("ID[0x%04X]", idx);
264 }
265 val = U32(idx + gctx->data_block);
266 break;
267 case ATOM_ARG_FB:
268 idx = U8(*ptr);
269 (*ptr)++;
d904ef9b 270 val = gctx->scratch[((gctx->fb_base + idx) / 4)];
771fe6b9
JG		 271 if (print)
272 DEBUG("FB[0x%02X]", idx);
d904ef9b 273 break;
771fe6b9
JG		 274 case ATOM_ARG_IMM:
275 switch (align) {
276 case ATOM_SRC_DWORD:
277 val = U32(*ptr);
278 (*ptr) += 4;
279 if (print)
280 DEBUG("IMM 0x%08X\n", val);
281 return val;
282 case ATOM_SRC_WORD0:
283 case ATOM_SRC_WORD8:
284 case ATOM_SRC_WORD16:
285 val = U16(*ptr);
286 (*ptr) += 2;
287 if (print)
288 DEBUG("IMM 0x%04X\n", val);
289 return val;
290 case ATOM_SRC_BYTE0:
291 case ATOM_SRC_BYTE8:
292 case ATOM_SRC_BYTE16:
293 case ATOM_SRC_BYTE24:
294 val = U8(*ptr);
295 (*ptr)++;
296 if (print)
297 DEBUG("IMM 0x%02X\n", val);
298 return val;
299 }
300 return 0;
301 case ATOM_ARG_PLL:
302 idx = U8(*ptr);
303 (*ptr)++;
304 if (print)
305 DEBUG("PLL[0x%02X]", idx);
306 val = gctx->card->pll_read(gctx->card, idx);
307 break;
308 case ATOM_ARG_MC:
309 idx = U8(*ptr);
310 (*ptr)++;
311 if (print)
312 DEBUG("MC[0x%02X]", idx);
313 val = gctx->card->mc_read(gctx->card, idx);
314 break;
315 }
316 if (saved)
317 *saved = val;
318 val &= atom_arg_mask[align];
319 val >>= atom_arg_shift[align];
320 if (print)
321 switch (align) {
322 case ATOM_SRC_DWORD:
323 DEBUG(".[31:0] -> 0x%08X\n", val);
324 break;
325 case ATOM_SRC_WORD0:
326 DEBUG(".[15:0] -> 0x%04X\n", val);
327 break;
328 case ATOM_SRC_WORD8:
329 DEBUG(".[23:8] -> 0x%04X\n", val);
330 break;
331 case ATOM_SRC_WORD16:
332 DEBUG(".[31:16] -> 0x%04X\n", val);
333 break;
334 case ATOM_SRC_BYTE0:
335 DEBUG(".[7:0] -> 0x%02X\n", val);
336 break;
337 case ATOM_SRC_BYTE8:
338 DEBUG(".[15:8] -> 0x%02X\n", val);
339 break;
340 case ATOM_SRC_BYTE16:
341 DEBUG(".[23:16] -> 0x%02X\n", val);
342 break;
343 case ATOM_SRC_BYTE24:
344 DEBUG(".[31:24] -> 0x%02X\n", val);
345 break;
346 }
347 return val;
348}
349
350static void atom_skip_src_int(atom_exec_context *ctx, uint8_t attr, int *ptr)
351{
352 uint32_t align = (attr >> 3) & 7, arg = attr & 7;
353 switch (arg) {
354 case ATOM_ARG_REG:
355 case ATOM_ARG_ID:
356 (*ptr) += 2;
357 break;
358 case ATOM_ARG_PLL:
359 case ATOM_ARG_MC:
360 case ATOM_ARG_PS:
361 case ATOM_ARG_WS:
362 case ATOM_ARG_FB:
363 (*ptr)++;
364 break;
365 case ATOM_ARG_IMM:
366 switch (align) {
367 case ATOM_SRC_DWORD:
368 (*ptr) += 4;
369 return;
370 case ATOM_SRC_WORD0:
371 case ATOM_SRC_WORD8:
372 case ATOM_SRC_WORD16:
373 (*ptr) += 2;
374 return;
375 case ATOM_SRC_BYTE0:
376 case ATOM_SRC_BYTE8:
377 case ATOM_SRC_BYTE16:
378 case ATOM_SRC_BYTE24:
379 (*ptr)++;
380 return;
381 }
382 return;
383 }
384}
385
386static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr)
387{
388 return atom_get_src_int(ctx, attr, ptr, NULL, 1);
389}
390
9f53e793
AD		 391static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr)
392{
393 uint32_t val = 0xCDCDCDCD;
394
395 switch (align) {
396 case ATOM_SRC_DWORD:
397 val = U32(*ptr);
398 (*ptr) += 4;
399 break;
400 case ATOM_SRC_WORD0:
401 case ATOM_SRC_WORD8:
402 case ATOM_SRC_WORD16:
403 val = U16(*ptr);
404 (*ptr) += 2;
405 break;
406 case ATOM_SRC_BYTE0:
407 case ATOM_SRC_BYTE8:
408 case ATOM_SRC_BYTE16:
409 case ATOM_SRC_BYTE24:
410 val = U8(*ptr);
411 (*ptr)++;
412 break;
413 }
414 return val;
415}
416
771fe6b9
JG		 417static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr,
418 int *ptr, uint32_t *saved, int print)
419{
420 return atom_get_src_int(ctx,
421 arg | atom_dst_to_src[(attr >> 3) &
422 7][(attr >> 6) & 3] << 3,
423 ptr, saved, print);
424}
425
426static void atom_skip_dst(atom_exec_context *ctx, int arg, uint8_t attr, int *ptr)
427{
428 atom_skip_src_int(ctx,
429 arg | atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) &
430 3] << 3, ptr);
431}
432
433static void atom_put_dst(atom_exec_context *ctx, int arg, uint8_t attr,
434 int *ptr, uint32_t val, uint32_t saved)
435{
436 uint32_t align =
437 atom_dst_to_src[(attr >> 3) & 7][(attr >> 6) & 3], old_val =
438 val, idx;
439 struct atom_context *gctx = ctx->ctx;
440 old_val &= atom_arg_mask[align] >> atom_arg_shift[align];
441 val <<= atom_arg_shift[align];
442 val &= atom_arg_mask[align];
443 saved &= ~atom_arg_mask[align];
444 val |= saved;
445 switch (arg) {
446 case ATOM_ARG_REG:
447 idx = U16(*ptr);
448 (*ptr) += 2;
449 DEBUG("REG[0x%04X]", idx);
450 idx += gctx->reg_block;
451 switch (gctx->io_mode) {
452 case ATOM_IO_MM:
453 if (idx == 0)
454 gctx->card->reg_write(gctx->card, idx,
455 val << 2);
456 else
457 gctx->card->reg_write(gctx->card, idx, val);
458 break;
459 case ATOM_IO_PCI:
460 printk(KERN_INFO
461 "PCI registers are not implemented.\n");
462 return;
463 case ATOM_IO_SYSIO:
464 printk(KERN_INFO
465 "SYSIO registers are not implemented.\n");
466 return;
467 default:
468 if (!(gctx->io_mode & 0x80)) {
469 printk(KERN_INFO "Bad IO mode.\n");
470 return;
471 }
472 if (!gctx->iio[gctx->io_mode & 0xFF]) {
473 printk(KERN_INFO
474 "Undefined indirect IO write method %d.\n",
475 gctx->io_mode & 0x7F);
476 return;
477 }
478 atom_iio_execute(gctx, gctx->iio[gctx->io_mode & 0xFF],
479 idx, val);
480 }
481 break;
482 case ATOM_ARG_PS:
483 idx = U8(*ptr);
484 (*ptr)++;
485 DEBUG("PS[0x%02X]", idx);
486 ctx->ps[idx] = cpu_to_le32(val);
487 break;
488 case ATOM_ARG_WS:
489 idx = U8(*ptr);
490 (*ptr)++;
491 DEBUG("WS[0x%02X]", idx);
492 switch (idx) {
493 case ATOM_WS_QUOTIENT:
494 gctx->divmul[0] = val;
495 break;
496 case ATOM_WS_REMAINDER:
497 gctx->divmul[1] = val;
498 break;
499 case ATOM_WS_DATAPTR:
500 gctx->data_block = val;
501 break;
502 case ATOM_WS_SHIFT:
503 gctx->shift = val;
504 break;
505 case ATOM_WS_OR_MASK:
506 case ATOM_WS_AND_MASK:
507 break;
508 case ATOM_WS_FB_WINDOW:
509 gctx->fb_base = val;
510 break;
511 case ATOM_WS_ATTRIBUTES:
512 gctx->io_attr = val;
513 break;
e2f8e870
AD		 514 case ATOM_WS_REGPTR:
515 gctx->reg_block = val;
516 break;
771fe6b9
JG		 517 default:
518 ctx->ws[idx] = val;
519 }
520 break;
521 case ATOM_ARG_FB:
522 idx = U8(*ptr);
523 (*ptr)++;
d904ef9b 524 gctx->scratch[((gctx->fb_base + idx) / 4)] = val;
771fe6b9 525 DEBUG("FB[0x%02X]", idx);
d904ef9b 526 break;
771fe6b9
JG		 527 case ATOM_ARG_PLL:
528 idx = U8(*ptr);
529 (*ptr)++;
530 DEBUG("PLL[0x%02X]", idx);
531 gctx->card->pll_write(gctx->card, idx, val);
532 break;
533 case ATOM_ARG_MC:
534 idx = U8(*ptr);
535 (*ptr)++;
536 DEBUG("MC[0x%02X]", idx);
537 gctx->card->mc_write(gctx->card, idx, val);
538 return;
539 }
540 switch (align) {
541 case ATOM_SRC_DWORD:
542 DEBUG(".[31:0] <- 0x%08X\n", old_val);
543 break;
544 case ATOM_SRC_WORD0:
545 DEBUG(".[15:0] <- 0x%04X\n", old_val);
546 break;
547 case ATOM_SRC_WORD8:
548 DEBUG(".[23:8] <- 0x%04X\n", old_val);
549 break;
550 case ATOM_SRC_WORD16:
551 DEBUG(".[31:16] <- 0x%04X\n", old_val);
552 break;
553 case ATOM_SRC_BYTE0:
554 DEBUG(".[7:0] <- 0x%02X\n", old_val);
555 break;
556 case ATOM_SRC_BYTE8:
557 DEBUG(".[15:8] <- 0x%02X\n", old_val);
558 break;
559 case ATOM_SRC_BYTE16:
560 DEBUG(".[23:16] <- 0x%02X\n", old_val);
561 break;
562 case ATOM_SRC_BYTE24:
563 DEBUG(".[31:24] <- 0x%02X\n", old_val);
564 break;
565 }
566}
567
568static void atom_op_add(atom_exec_context *ctx, int *ptr, int arg)
569{
570 uint8_t attr = U8((*ptr)++);
571 uint32_t dst, src, saved;
572 int dptr = *ptr;
573 SDEBUG(" dst: ");
574 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
575 SDEBUG(" src: ");
576 src = atom_get_src(ctx, attr, ptr);
577 dst += src;
578 SDEBUG(" dst: ");
579 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
580}
581
582static void atom_op_and(atom_exec_context *ctx, int *ptr, int arg)
583{
584 uint8_t attr = U8((*ptr)++);
585 uint32_t dst, src, saved;
586 int dptr = *ptr;
587 SDEBUG(" dst: ");
588 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
589 SDEBUG(" src: ");
590 src = atom_get_src(ctx, attr, ptr);
591 dst &= src;
592 SDEBUG(" dst: ");
593 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
594}
595
596static void atom_op_beep(atom_exec_context *ctx, int *ptr, int arg)
597{
598 printk("ATOM BIOS beeped!\n");
599}
600
601static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg)
602{
603 int idx = U8((*ptr)++);
604 if (idx < ATOM_TABLE_NAMES_CNT)
605 SDEBUG(" table: %d (%s)\n", idx, atom_table_names[idx]);
606 else
607 SDEBUG(" table: %d\n", idx);
608 if (U16(ctx->ctx->cmd_table + 4 + 2 * idx))
c31ad97f 609 atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift);
771fe6b9
JG		 610}
611
612static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg)
613{
614 uint8_t attr = U8((*ptr)++);
615 uint32_t saved;
616 int dptr = *ptr;
617 attr &= 0x38;
618 attr |= atom_def_dst[attr >> 3] << 6;
619 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
620 SDEBUG(" dst: ");
621 atom_put_dst(ctx, arg, attr, &dptr, 0, saved);
622}
623
624static void atom_op_compare(atom_exec_context *ctx, int *ptr, int arg)
625{
626 uint8_t attr = U8((*ptr)++);
627 uint32_t dst, src;
628 SDEBUG(" src1: ");
629 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
630 SDEBUG(" src2: ");
631 src = atom_get_src(ctx, attr, ptr);
632 ctx->ctx->cs_equal = (dst == src);
633 ctx->ctx->cs_above = (dst > src);
634 SDEBUG(" result: %s %s\n", ctx->ctx->cs_equal ? "EQ" : "NE",
635 ctx->ctx->cs_above ? "GT" : "LE");
636}
637
638static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
639{
640 uint8_t count = U8((*ptr)++);
641 SDEBUG(" count: %d\n", count);
642 if (arg == ATOM_UNIT_MICROSEC)
643 schedule_timeout_uninterruptible(usecs_to_jiffies(count));
644 else
645 schedule_timeout_uninterruptible(msecs_to_jiffies(count));
646}
647
648static void atom_op_div(atom_exec_context *ctx, int *ptr, int arg)
649{
650 uint8_t attr = U8((*ptr)++);
651 uint32_t dst, src;
652 SDEBUG(" src1: ");
653 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
654 SDEBUG(" src2: ");
655 src = atom_get_src(ctx, attr, ptr);
656 if (src != 0) {
657 ctx->ctx->divmul[0] = dst / src;
658 ctx->ctx->divmul[1] = dst % src;
659 } else {
660 ctx->ctx->divmul[0] = 0;
661 ctx->ctx->divmul[1] = 0;
662 }
663}
664
665static void atom_op_eot(atom_exec_context *ctx, int *ptr, int arg)
666{
667 /* functionally, a nop */
668}
669
670static void atom_op_jump(atom_exec_context *ctx, int *ptr, int arg)
671{
672 int execute = 0, target = U16(*ptr);
673 (*ptr) += 2;
674 switch (arg) {
675 case ATOM_COND_ABOVE:
676 execute = ctx->ctx->cs_above;
677 break;
678 case ATOM_COND_ABOVEOREQUAL:
679 execute = ctx->ctx->cs_above || ctx->ctx->cs_equal;
680 break;
681 case ATOM_COND_ALWAYS:
682 execute = 1;
683 break;
684 case ATOM_COND_BELOW:
685 execute = !(ctx->ctx->cs_above || ctx->ctx->cs_equal);
686 break;
687 case ATOM_COND_BELOWOREQUAL:
688 execute = !ctx->ctx->cs_above;
689 break;
690 case ATOM_COND_EQUAL:
691 execute = ctx->ctx->cs_equal;
692 break;
693 case ATOM_COND_NOTEQUAL:
694 execute = !ctx->ctx->cs_equal;
695 break;
696 }
697 if (arg != ATOM_COND_ALWAYS)
698 SDEBUG(" taken: %s\n", execute ? "yes" : "no");
699 SDEBUG(" target: 0x%04X\n", target);
700 if (execute)
701 *ptr = ctx->start + target;
702}
703
704static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg)
705{
706 uint8_t attr = U8((*ptr)++);
707 uint32_t dst, src1, src2, saved;
708 int dptr = *ptr;
709 SDEBUG(" dst: ");
710 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
711 SDEBUG(" src1: ");
9f53e793 712 src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
771fe6b9 713 SDEBUG(" src2: ");
e2f8e870 714 src2 = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 715 dst &= src1;
716 dst |= src2;
717 SDEBUG(" dst: ");
718 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
719}
720
721static void atom_op_move(atom_exec_context *ctx, int *ptr, int arg)
722{
723 uint8_t attr = U8((*ptr)++);
724 uint32_t src, saved;
725 int dptr = *ptr;
726 if (((attr >> 3) & 7) != ATOM_SRC_DWORD)
727 atom_get_dst(ctx, arg, attr, ptr, &saved, 0);
728 else {
729 atom_skip_dst(ctx, arg, attr, ptr);
730 saved = 0xCDCDCDCD;
731 }
732 SDEBUG(" src: ");
733 src = atom_get_src(ctx, attr, ptr);
734 SDEBUG(" dst: ");
735 atom_put_dst(ctx, arg, attr, &dptr, src, saved);
736}
737
738static void atom_op_mul(atom_exec_context *ctx, int *ptr, int arg)
739{
740 uint8_t attr = U8((*ptr)++);
741 uint32_t dst, src;
742 SDEBUG(" src1: ");
743 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
744 SDEBUG(" src2: ");
745 src = atom_get_src(ctx, attr, ptr);
746 ctx->ctx->divmul[0] = dst * src;
747}
748
749static void atom_op_nop(atom_exec_context *ctx, int *ptr, int arg)
750{
751 /* nothing */
752}
753
754static void atom_op_or(atom_exec_context *ctx, int *ptr, int arg)
755{
756 uint8_t attr = U8((*ptr)++);
757 uint32_t dst, src, saved;
758 int dptr = *ptr;
759 SDEBUG(" dst: ");
760 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
761 SDEBUG(" src: ");
762 src = atom_get_src(ctx, attr, ptr);
763 dst |= src;
764 SDEBUG(" dst: ");
765 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
766}
767
768static void atom_op_postcard(atom_exec_context *ctx, int *ptr, int arg)
769{
770 uint8_t val = U8((*ptr)++);
771 SDEBUG("POST card output: 0x%02X\n", val);
772}
773
774static void atom_op_repeat(atom_exec_context *ctx, int *ptr, int arg)
775{
776 printk(KERN_INFO "unimplemented!\n");
777}
778
779static void atom_op_restorereg(atom_exec_context *ctx, int *ptr, int arg)
780{
781 printk(KERN_INFO "unimplemented!\n");
782}
783
784static void atom_op_savereg(atom_exec_context *ctx, int *ptr, int arg)
785{
786 printk(KERN_INFO "unimplemented!\n");
787}
788
789static void atom_op_setdatablock(atom_exec_context *ctx, int *ptr, int arg)
790{
791 int idx = U8(*ptr);
792 (*ptr)++;
793 SDEBUG(" block: %d\n", idx);
794 if (!idx)
795 ctx->ctx->data_block = 0;
796 else if (idx == 255)
797 ctx->ctx->data_block = ctx->start;
798 else
799 ctx->ctx->data_block = U16(ctx->ctx->data_table + 4 + 2 * idx);
800 SDEBUG(" base: 0x%04X\n", ctx->ctx->data_block);
801}
802
803static void atom_op_setfbbase(atom_exec_context *ctx, int *ptr, int arg)
804{
805 uint8_t attr = U8((*ptr)++);
806 SDEBUG(" fb_base: ");
807 ctx->ctx->fb_base = atom_get_src(ctx, attr, ptr);
808}
809
810static void atom_op_setport(atom_exec_context *ctx, int *ptr, int arg)
811{
812 int port;
813 switch (arg) {
814 case ATOM_PORT_ATI:
815 port = U16(*ptr);
816 if (port < ATOM_IO_NAMES_CNT)
817 SDEBUG(" port: %d (%s)\n", port, atom_io_names[port]);
818 else
819 SDEBUG(" port: %d\n", port);
820 if (!port)
821 ctx->ctx->io_mode = ATOM_IO_MM;
822 else
823 ctx->ctx->io_mode = ATOM_IO_IIO | port;
824 (*ptr) += 2;
825 break;
826 case ATOM_PORT_PCI:
827 ctx->ctx->io_mode = ATOM_IO_PCI;
828 (*ptr)++;
829 break;
830 case ATOM_PORT_SYSIO:
831 ctx->ctx->io_mode = ATOM_IO_SYSIO;
832 (*ptr)++;
833 break;
834 }
835}
836
837static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg)
838{
839 ctx->ctx->reg_block = U16(*ptr);
840 (*ptr) += 2;
841 SDEBUG(" base: 0x%04X\n", ctx->ctx->reg_block);
842}
843
9f53e793
AD		 844static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg)
845{
846 uint8_t attr = U8((*ptr)++), shift;
847 uint32_t saved, dst;
848 int dptr = *ptr;
849 attr &= 0x38;
850 attr |= atom_def_dst[attr >> 3] << 6;
851 SDEBUG(" dst: ");
852 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
853 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
854 SDEBUG(" shift: %d\n", shift);
855 dst <<= shift;
856 SDEBUG(" dst: ");
857 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
858}
859
860static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg)
861{
862 uint8_t attr = U8((*ptr)++), shift;
863 uint32_t saved, dst;
864 int dptr = *ptr;
865 attr &= 0x38;
866 attr |= atom_def_dst[attr >> 3] << 6;
867 SDEBUG(" dst: ");
868 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
869 shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
870 SDEBUG(" shift: %d\n", shift);
871 dst >>= shift;
872 SDEBUG(" dst: ");
873 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
874}
875
771fe6b9
JG		 876static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
877{
878 uint8_t attr = U8((*ptr)++), shift;
879 uint32_t saved, dst;
880 int dptr = *ptr;
881 attr &= 0x38;
882 attr |= atom_def_dst[attr >> 3] << 6;
883 SDEBUG(" dst: ");
884 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
9f53e793 885 shift = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 886 SDEBUG(" shift: %d\n", shift);
887 dst <<= shift;
888 SDEBUG(" dst: ");
889 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
890}
891
892static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
893{
894 uint8_t attr = U8((*ptr)++), shift;
895 uint32_t saved, dst;
896 int dptr = *ptr;
897 attr &= 0x38;
898 attr |= atom_def_dst[attr >> 3] << 6;
899 SDEBUG(" dst: ");
900 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
9f53e793 901 shift = atom_get_src(ctx, attr, ptr);
771fe6b9
JG		 902 SDEBUG(" shift: %d\n", shift);
903 dst >>= shift;
904 SDEBUG(" dst: ");
905 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
906}
907
908static void atom_op_sub(atom_exec_context *ctx, int *ptr, int arg)
909{
910 uint8_t attr = U8((*ptr)++);
911 uint32_t dst, src, saved;
912 int dptr = *ptr;
913 SDEBUG(" dst: ");
914 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
915 SDEBUG(" src: ");
916 src = atom_get_src(ctx, attr, ptr);
917 dst -= src;
918 SDEBUG(" dst: ");
919 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
920}
921
922static void atom_op_switch(atom_exec_context *ctx, int *ptr, int arg)
923{
924 uint8_t attr = U8((*ptr)++);
925 uint32_t src, val, target;
926 SDEBUG(" switch: ");
927 src = atom_get_src(ctx, attr, ptr);
928 while (U16(*ptr) != ATOM_CASE_END)
929 if (U8(*ptr) == ATOM_CASE_MAGIC) {
930 (*ptr)++;
931 SDEBUG(" case: ");
932 val =
933 atom_get_src(ctx, (attr & 0x38) | ATOM_ARG_IMM,
934 ptr);
935 target = U16(*ptr);
936 if (val == src) {
937 SDEBUG(" target: %04X\n", target);
938 *ptr = ctx->start + target;
939 return;
940 }
941 (*ptr) += 2;
942 } else {
943 printk(KERN_INFO "Bad case.\n");
944 return;
945 }
946 (*ptr) += 2;
947}
948
949static void atom_op_test(atom_exec_context *ctx, int *ptr, int arg)
950{
951 uint8_t attr = U8((*ptr)++);
952 uint32_t dst, src;
953 SDEBUG(" src1: ");
954 dst = atom_get_dst(ctx, arg, attr, ptr, NULL, 1);
955 SDEBUG(" src2: ");
956 src = atom_get_src(ctx, attr, ptr);
957 ctx->ctx->cs_equal = ((dst & src) == 0);
958 SDEBUG(" result: %s\n", ctx->ctx->cs_equal ? "EQ" : "NE");
959}
960
961static void atom_op_xor(atom_exec_context *ctx, int *ptr, int arg)
962{
963 uint8_t attr = U8((*ptr)++);
964 uint32_t dst, src, saved;
965 int dptr = *ptr;
966 SDEBUG(" dst: ");
967 dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
968 SDEBUG(" src: ");
969 src = atom_get_src(ctx, attr, ptr);
970 dst ^= src;
971 SDEBUG(" dst: ");
972 atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
973}
974
975static void atom_op_debug(atom_exec_context *ctx, int *ptr, int arg)
976{
977 printk(KERN_INFO "unimplemented!\n");
978}
979
980static struct {
981 void (*func) (atom_exec_context *, int *, int);
982 int arg;
983} opcode_table[ATOM_OP_CNT] = {
984 {
985 NULL, 0}, {
986 atom_op_move, ATOM_ARG_REG}, {
987 atom_op_move, ATOM_ARG_PS}, {
988 atom_op_move, ATOM_ARG_WS}, {
989 atom_op_move, ATOM_ARG_FB}, {
990 atom_op_move, ATOM_ARG_PLL}, {
991 atom_op_move, ATOM_ARG_MC}, {
992 atom_op_and, ATOM_ARG_REG}, {
993 atom_op_and, ATOM_ARG_PS}, {
994 atom_op_and, ATOM_ARG_WS}, {
995 atom_op_and, ATOM_ARG_FB}, {
996 atom_op_and, ATOM_ARG_PLL}, {
997 atom_op_and, ATOM_ARG_MC}, {
998 atom_op_or, ATOM_ARG_REG}, {
999 atom_op_or, ATOM_ARG_PS}, {
1000 atom_op_or, ATOM_ARG_WS}, {
1001 atom_op_or, ATOM_ARG_FB}, {
1002 atom_op_or, ATOM_ARG_PLL}, {
1003 atom_op_or, ATOM_ARG_MC}, {
9f53e793
AD		 1004 atom_op_shift_left, ATOM_ARG_REG}, {
1005 atom_op_shift_left, ATOM_ARG_PS}, {
1006 atom_op_shift_left, ATOM_ARG_WS}, {
1007 atom_op_shift_left, ATOM_ARG_FB}, {
1008 atom_op_shift_left, ATOM_ARG_PLL}, {
1009 atom_op_shift_left, ATOM_ARG_MC}, {
1010 atom_op_shift_right, ATOM_ARG_REG}, {
1011 atom_op_shift_right, ATOM_ARG_PS}, {
1012 atom_op_shift_right, ATOM_ARG_WS}, {
1013 atom_op_shift_right, ATOM_ARG_FB}, {
1014 atom_op_shift_right, ATOM_ARG_PLL}, {
1015 atom_op_shift_right, ATOM_ARG_MC}, {
771fe6b9
JG		 1016 atom_op_mul, ATOM_ARG_REG}, {
1017 atom_op_mul, ATOM_ARG_PS}, {
1018 atom_op_mul, ATOM_ARG_WS}, {
1019 atom_op_mul, ATOM_ARG_FB}, {
1020 atom_op_mul, ATOM_ARG_PLL}, {
1021 atom_op_mul, ATOM_ARG_MC}, {
1022 atom_op_div, ATOM_ARG_REG}, {
1023 atom_op_div, ATOM_ARG_PS}, {
1024 atom_op_div, ATOM_ARG_WS}, {
1025 atom_op_div, ATOM_ARG_FB}, {
1026 atom_op_div, ATOM_ARG_PLL}, {
1027 atom_op_div, ATOM_ARG_MC}, {
1028 atom_op_add, ATOM_ARG_REG}, {
1029 atom_op_add, ATOM_ARG_PS}, {
1030 atom_op_add, ATOM_ARG_WS}, {
1031 atom_op_add, ATOM_ARG_FB}, {
1032 atom_op_add, ATOM_ARG_PLL}, {
1033 atom_op_add, ATOM_ARG_MC}, {
1034 atom_op_sub, ATOM_ARG_REG}, {
1035 atom_op_sub, ATOM_ARG_PS}, {
1036 atom_op_sub, ATOM_ARG_WS}, {
1037 atom_op_sub, ATOM_ARG_FB}, {
1038 atom_op_sub, ATOM_ARG_PLL}, {
1039 atom_op_sub, ATOM_ARG_MC}, {
1040 atom_op_setport, ATOM_PORT_ATI}, {
1041 atom_op_setport, ATOM_PORT_PCI}, {
1042 atom_op_setport, ATOM_PORT_SYSIO}, {
1043 atom_op_setregblock, 0}, {
1044 atom_op_setfbbase, 0}, {
1045 atom_op_compare, ATOM_ARG_REG}, {
1046 atom_op_compare, ATOM_ARG_PS}, {
1047 atom_op_compare, ATOM_ARG_WS}, {
1048 atom_op_compare, ATOM_ARG_FB}, {
1049 atom_op_compare, ATOM_ARG_PLL}, {
1050 atom_op_compare, ATOM_ARG_MC}, {
1051 atom_op_switch, 0}, {
1052 atom_op_jump, ATOM_COND_ALWAYS}, {
1053 atom_op_jump, ATOM_COND_EQUAL}, {
1054 atom_op_jump, ATOM_COND_BELOW}, {
1055 atom_op_jump, ATOM_COND_ABOVE}, {
1056 atom_op_jump, ATOM_COND_BELOWOREQUAL}, {
1057 atom_op_jump, ATOM_COND_ABOVEOREQUAL}, {
1058 atom_op_jump, ATOM_COND_NOTEQUAL}, {
1059 atom_op_test, ATOM_ARG_REG}, {
1060 atom_op_test, ATOM_ARG_PS}, {
1061 atom_op_test, ATOM_ARG_WS}, {
1062 atom_op_test, ATOM_ARG_FB}, {
1063 atom_op_test, ATOM_ARG_PLL}, {
1064 atom_op_test, ATOM_ARG_MC}, {
1065 atom_op_delay, ATOM_UNIT_MILLISEC}, {
1066 atom_op_delay, ATOM_UNIT_MICROSEC}, {
1067 atom_op_calltable, 0}, {
1068 atom_op_repeat, 0}, {
1069 atom_op_clear, ATOM_ARG_REG}, {
1070 atom_op_clear, ATOM_ARG_PS}, {
1071 atom_op_clear, ATOM_ARG_WS}, {
1072 atom_op_clear, ATOM_ARG_FB}, {
1073 atom_op_clear, ATOM_ARG_PLL}, {
1074 atom_op_clear, ATOM_ARG_MC}, {
1075 atom_op_nop, 0}, {
1076 atom_op_eot, 0}, {
1077 atom_op_mask, ATOM_ARG_REG}, {
1078 atom_op_mask, ATOM_ARG_PS}, {
1079 atom_op_mask, ATOM_ARG_WS}, {
1080 atom_op_mask, ATOM_ARG_FB}, {
1081 atom_op_mask, ATOM_ARG_PLL}, {
1082 atom_op_mask, ATOM_ARG_MC}, {
1083 atom_op_postcard, 0}, {
1084 atom_op_beep, 0}, {
1085 atom_op_savereg, 0}, {
1086 atom_op_restorereg, 0}, {
1087 atom_op_setdatablock, 0}, {
1088 atom_op_xor, ATOM_ARG_REG}, {
1089 atom_op_xor, ATOM_ARG_PS}, {
1090 atom_op_xor, ATOM_ARG_WS}, {
1091 atom_op_xor, ATOM_ARG_FB}, {
1092 atom_op_xor, ATOM_ARG_PLL}, {
1093 atom_op_xor, ATOM_ARG_MC}, {
1094 atom_op_shl, ATOM_ARG_REG}, {
1095 atom_op_shl, ATOM_ARG_PS}, {
1096 atom_op_shl, ATOM_ARG_WS}, {
1097 atom_op_shl, ATOM_ARG_FB}, {
1098 atom_op_shl, ATOM_ARG_PLL}, {
1099 atom_op_shl, ATOM_ARG_MC}, {
1100 atom_op_shr, ATOM_ARG_REG}, {
1101 atom_op_shr, ATOM_ARG_PS}, {
1102 atom_op_shr, ATOM_ARG_WS}, {
1103 atom_op_shr, ATOM_ARG_FB}, {
1104 atom_op_shr, ATOM_ARG_PLL}, {
1105 atom_op_shr, ATOM_ARG_MC}, {
1106atom_op_debug, 0},};
1107
c31ad97f 1108static void atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params)
771fe6b9
JG		 1109{
1110 int base = CU16(ctx->cmd_table + 4 + 2 * index);
1111 int len, ws, ps, ptr;
1112 unsigned char op;
1113 atom_exec_context ectx;
1114
1115 if (!base)
1116 return;
1117
1118 len = CU16(base + ATOM_CT_SIZE_PTR);
1119 ws = CU8(base + ATOM_CT_WS_PTR);
1120 ps = CU8(base + ATOM_CT_PS_PTR) & ATOM_CT_PS_MASK;
1121 ptr = base + ATOM_CT_CODE_PTR;
1122
1123 SDEBUG(">> execute %04X (len %d, WS %d, PS %d)\n", base, len, ws, ps);
1124
771fe6b9
JG		 1125 ectx.ctx = ctx;
1126 ectx.ps_shift = ps / 4;
1127 ectx.start = base;
1128 ectx.ps = params;
1129 if (ws)
1130 ectx.ws = kzalloc(4 * ws, GFP_KERNEL);
1131 else
1132 ectx.ws = NULL;
1133
1134 debug_depth++;
1135 while (1) {
1136 op = CU8(ptr++);
1137 if (op < ATOM_OP_NAMES_CNT)
1138 SDEBUG("%s @ 0x%04X\n", atom_op_names[op], ptr - 1);
1139 else
1140 SDEBUG("[%d] @ 0x%04X\n", op, ptr - 1);
1141
1142 if (op < ATOM_OP_CNT && op > 0)
1143 opcode_table[op].func(&ectx, &ptr,
1144 opcode_table[op].arg);
1145 else
1146 break;
1147
1148 if (op == ATOM_OP_EOT)
1149 break;
1150 }
1151 debug_depth--;
1152 SDEBUG("<<\n");
1153
1154 if (ws)
1155 kfree(ectx.ws);
1156}
1157
c31ad97f
RM		 1158void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params)
1159{
1160 mutex_lock(&ctx->mutex);
947bfc83
AD		 1161 /* reset reg block */
1162 ctx->reg_block = 0;
1163 /* reset fb window */
1164 ctx->fb_base = 0;
1165 /* reset io mode */
1166 ctx->io_mode = ATOM_IO_MM;
c31ad97f
RM		 1167 atom_execute_table_locked(ctx, index, params);
1168 mutex_unlock(&ctx->mutex);
1169}
1170
771fe6b9
JG		 1171static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 };
1172
1173static void atom_index_iio(struct atom_context *ctx, int base)
1174{
1175 ctx->iio = kzalloc(2 * 256, GFP_KERNEL);
1176 while (CU8(base) == ATOM_IIO_START) {
1177 ctx->iio[CU8(base + 1)] = base + 2;
1178 base += 2;
1179 while (CU8(base) != ATOM_IIO_END)
1180 base += atom_iio_len[CU8(base)];
1181 base += 3;
1182 }
1183}
1184
1185struct atom_context *atom_parse(struct card_info *card, void *bios)
1186{
1187 int base;
1188 struct atom_context *ctx =
1189 kzalloc(sizeof(struct atom_context), GFP_KERNEL);
1190 char *str;
1191 char name[512];
1192 int i;
1193
1194 ctx->card = card;
1195 ctx->bios = bios;
1196
1197 if (CU16(0) != ATOM_BIOS_MAGIC) {
1198 printk(KERN_INFO "Invalid BIOS magic.\n");
1199 kfree(ctx);
1200 return NULL;
1201 }
1202 if (strncmp
1203 (CSTR(ATOM_ATI_MAGIC_PTR), ATOM_ATI_MAGIC,
1204 strlen(ATOM_ATI_MAGIC))) {
1205 printk(KERN_INFO "Invalid ATI magic.\n");
1206 kfree(ctx);
1207 return NULL;
1208 }
1209
1210 base = CU16(ATOM_ROM_TABLE_PTR);
1211 if (strncmp
1212 (CSTR(base + ATOM_ROM_MAGIC_PTR), ATOM_ROM_MAGIC,
1213 strlen(ATOM_ROM_MAGIC))) {
1214 printk(KERN_INFO "Invalid ATOM magic.\n");
1215 kfree(ctx);
1216 return NULL;
1217 }
1218
1219 ctx->cmd_table = CU16(base + ATOM_ROM_CMD_PTR);
1220 ctx->data_table = CU16(base + ATOM_ROM_DATA_PTR);
1221 atom_index_iio(ctx, CU16(ctx->data_table + ATOM_DATA_IIO_PTR) + 4);
1222
1223 str = CSTR(CU16(base + ATOM_ROM_MSG_PTR));
1224 while (*str && ((*str == '\n') || (*str == '\r')))
1225 str++;
1226 /* name string isn't always 0 terminated */
1227 for (i = 0; i < 511; i++) {
1228 name[i] = str[i];
1229 if (name[i] < '.' || name[i] > 'z') {
1230 name[i] = 0;
1231 break;
1232 }
1233 }
1234 printk(KERN_INFO "ATOM BIOS: %s\n", name);
1235
1236 return ctx;
1237}
1238
1239int atom_asic_init(struct atom_context *ctx)
1240{
1241 int hwi = CU16(ctx->data_table + ATOM_DATA_FWI_PTR);
1242 uint32_t ps[16];
1243 memset(ps, 0, 64);
1244
1245 ps[0] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFSCLK_PTR));
1246 ps[1] = cpu_to_le32(CU32(hwi + ATOM_FWI_DEFMCLK_PTR));
1247 if (!ps[0] || !ps[1])
1248 return 1;
1249
1250 if (!CU16(ctx->cmd_table + 4 + 2 * ATOM_CMD_INIT))
1251 return 1;
1252 atom_execute_table(ctx, ATOM_CMD_INIT, ps);
1253
1254 return 0;
1255}
1256
1257void atom_destroy(struct atom_context *ctx)
1258{
1259 if (ctx->iio)
1260 kfree(ctx->iio);
1261 kfree(ctx);
1262}
1263
1264void atom_parse_data_header(struct atom_context *ctx, int index,
1265 uint16_t * size, uint8_t * frev, uint8_t * crev,
1266 uint16_t * data_start)
1267{
1268 int offset = index * 2 + 4;
1269 int idx = CU16(ctx->data_table + offset);
1270
1271 if (size)
1272 *size = CU16(idx);
1273 if (frev)
1274 *frev = CU8(idx + 2);
1275 if (crev)
1276 *crev = CU8(idx + 3);
1277 *data_start = idx;
1278 return;
1279}
1280
1281void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
1282 uint8_t * crev)
1283{
1284 int offset = index * 2 + 4;
1285 int idx = CU16(ctx->cmd_table + offset);
1286
1287 if (frev)
1288 *frev = CU8(idx + 2);
1289 if (crev)
1290 *crev = CU8(idx + 3);
1291 return;
1292}
5801ead6
AD		 1293
1294int atom_allocate_fb_scratch(struct atom_context *ctx)
1295{
1296 int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
1297 uint16_t data_offset;
1298 int usage_bytes;
1299 struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
1300
1301 atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset);
1302
1303 firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
1304
1305 DRM_DEBUG("atom firmware requested %08x %dkb\n",
1306 firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware,
1307 firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb);
1308
1309 usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024;
1310 if (usage_bytes == 0)
1311 usage_bytes = 20 * 1024;
1312 /* allocate some scratch memory */
1313 ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
1314 if (!ctx->scratch)
1315 return -ENOMEM;
1316 return 0;
1317}
Linux 6.x block layer and io_uring tree(s)