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Linux 4.1.16
[linux/fpc-iii.git] / drivers / misc / altera-stapl / altera.c
blobbca2630d006f4d088b4873e08a399983bc845615
1 /*
2 * altera.c
3 *
4 * altera FPGA driver
5 *
6 * Copyright (C) Altera Corporation 1998-2001
7 * Copyright (C) 2010,2011 NetUP Inc.
8 * Copyright (C) 2010,2011 Igor M. Liplianin <liplianin@netup.ru>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 *
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 #include <asm/unaligned.h>
27 #include <linux/ctype.h>
28 #include <linux/string.h>
29 #include <linux/firmware.h>
30 #include <linux/slab.h>
31 #include <linux/module.h>
32 #include <misc/altera.h>
33 #include "altera-exprt.h"
34 #include "altera-jtag.h"
35
36 static int debug = 1;
37 module_param(debug, int, 0644);
38 MODULE_PARM_DESC(debug, "enable debugging information");
39
40 MODULE_DESCRIPTION("altera FPGA kernel module");
41 MODULE_AUTHOR("Igor M. Liplianin <liplianin@netup.ru>");
42 MODULE_LICENSE("GPL");
43
44 #define dprintk(args...) \
45 if (debug) { \
46 printk(KERN_DEBUG args); \
47 }
48
49 enum altera_fpga_opcode {
50 OP_NOP = 0,
51 OP_DUP,
52 OP_SWP,
53 OP_ADD,
54 OP_SUB,
55 OP_MULT,
56 OP_DIV,
57 OP_MOD,
58 OP_SHL,
59 OP_SHR,
60 OP_NOT,
61 OP_AND,
62 OP_OR,
63 OP_XOR,
64 OP_INV,
65 OP_GT,
66 OP_LT,
67 OP_RET,
68 OP_CMPS,
69 OP_PINT,
70 OP_PRNT,
71 OP_DSS,
72 OP_DSSC,
73 OP_ISS,
74 OP_ISSC,
75 OP_DPR = 0x1c,
76 OP_DPRL,
77 OP_DPO,
78 OP_DPOL,
79 OP_IPR,
80 OP_IPRL,
81 OP_IPO,
82 OP_IPOL,
83 OP_PCHR,
84 OP_EXIT,
85 OP_EQU,
86 OP_POPT,
87 OP_ABS = 0x2c,
88 OP_BCH0,
89 OP_PSH0 = 0x2f,
90 OP_PSHL = 0x40,
91 OP_PSHV,
92 OP_JMP,
93 OP_CALL,
94 OP_NEXT,
95 OP_PSTR,
96 OP_SINT = 0x47,
97 OP_ST,
98 OP_ISTP,
99 OP_DSTP,
100 OP_SWPN,
101 OP_DUPN,
102 OP_POPV,
103 OP_POPE,
104 OP_POPA,
105 OP_JMPZ,
106 OP_DS,
107 OP_IS,
108 OP_DPRA,
109 OP_DPOA,
110 OP_IPRA,
111 OP_IPOA,
112 OP_EXPT,
113 OP_PSHE,
114 OP_PSHA,
115 OP_DYNA,
116 OP_EXPV = 0x5c,
117 OP_COPY = 0x80,
118 OP_REVA,
119 OP_DSC,
120 OP_ISC,
121 OP_WAIT,
122 OP_VS,
123 OP_CMPA = 0xc0,
124 OP_VSC,
125 };
126
127 struct altera_procinfo {
128 char *name;
129 u8 attrs;
130 struct altera_procinfo *next;
131 };
132
133 /* This function checks if enough parameters are available on the stack. */
134 static int altera_check_stack(int stack_ptr, int count, int *status)
135 {
136 if (stack_ptr < count) {
137 *status = -EOVERFLOW;
138 return 0;
139 }
140
141 return 1;
142 }
143
144 static void altera_export_int(char *key, s32 value)
145 {
146 dprintk("Export: key = \"%s\", value = %d\n", key, value);
147 }
148
149 #define HEX_LINE_CHARS 72
150 #define HEX_LINE_BITS (HEX_LINE_CHARS * 4)
151
152 static void altera_export_bool_array(char *key, u8 *data, s32 count)
153 {
154 char string[HEX_LINE_CHARS + 1];
155 s32 i, offset;
156 u32 size, line, lines, linebits, value, j, k;
157
158 if (count > HEX_LINE_BITS) {
159 dprintk("Export: key = \"%s\", %d bits, value = HEX\n",
160 key, count);
161 lines = (count + (HEX_LINE_BITS - 1)) / HEX_LINE_BITS;
162
163 for (line = 0; line < lines; ++line) {
164 if (line < (lines - 1)) {
165 linebits = HEX_LINE_BITS;
166 size = HEX_LINE_CHARS;
167 offset = count - ((line + 1) * HEX_LINE_BITS);
168 } else {
169 linebits =
170 count - ((lines - 1) * HEX_LINE_BITS);
171 size = (linebits + 3) / 4;
172 offset = 0L;
173 }
174
175 string[size] = '\0';
176 j = size - 1;
177 value = 0;
178
179 for (k = 0; k < linebits; ++k) {
180 i = k + offset;
181 if (data[i >> 3] & (1 << (i & 7)))
182 value |= (1 << (i & 3));
183 if ((i & 3) == 3) {
184 sprintf(&string[j], "%1x", value);
185 value = 0;
186 --j;
187 }
188 }
189 if ((k & 3) > 0)
190 sprintf(&string[j], "%1x", value);
191
192 dprintk("%s\n", string);
193 }
194
195 } else {
196 size = (count + 3) / 4;
197 string[size] = '\0';
198 j = size - 1;
199 value = 0;
200
201 for (i = 0; i < count; ++i) {
202 if (data[i >> 3] & (1 << (i & 7)))
203 value |= (1 << (i & 3));
204 if ((i & 3) == 3) {
205 sprintf(&string[j], "%1x", value);
206 value = 0;
207 --j;
208 }
209 }
210 if ((i & 3) > 0)
211 sprintf(&string[j], "%1x", value);
212
213 dprintk("Export: key = \"%s\", %d bits, value = HEX %s\n",
214 key, count, string);
215 }
216 }
217
218 static int altera_execute(struct altera_state *astate,
219 u8 *p,
220 s32 program_size,
221 s32 *error_address,
222 int *exit_code,
223 int *format_version)
224 {
225 struct altera_config *aconf = astate->config;
226 char *msg_buff = astate->msg_buff;
227 long *stack = astate->stack;
228 int status = 0;
229 u32 first_word = 0L;
230 u32 action_table = 0L;
231 u32 proc_table = 0L;
232 u32 str_table = 0L;
233 u32 sym_table = 0L;
234 u32 data_sect = 0L;
235 u32 code_sect = 0L;
236 u32 debug_sect = 0L;
237 u32 action_count = 0L;
238 u32 proc_count = 0L;
239 u32 sym_count = 0L;
240 long *vars = NULL;
241 s32 *var_size = NULL;
242 char *attrs = NULL;
243 u8 *proc_attributes = NULL;
244 u32 pc;
245 u32 opcode_address;
246 u32 args[3];
247 u32 opcode;
248 u32 name_id;
249 u8 charbuf[4];
250 long long_tmp;
251 u32 variable_id;
252 u8 *charptr_tmp;
253 u8 *charptr_tmp2;
254 long *longptr_tmp;
255 int version = 0;
256 int delta = 0;
257 int stack_ptr = 0;
258 u32 arg_count;
259 int done = 0;
260 int bad_opcode = 0;
261 u32 count;
262 u32 index;
263 u32 index2;
264 s32 long_count;
265 s32 long_idx;
266 s32 long_idx2;
267 u32 i;
268 u32 j;
269 u32 uncomp_size;
270 u32 offset;
271 u32 value;
272 int current_proc = 0;
273 int reverse;
274
275 char *name;
276
277 dprintk("%s\n", __func__);
278
279 /* Read header information */
280 if (program_size > 52L) {
281 first_word = get_unaligned_be32(&p[0]);
282 version = (first_word & 1L);
283 *format_version = version + 1;
284 delta = version * 8;
285
286 action_table = get_unaligned_be32(&p[4]);
287 proc_table = get_unaligned_be32(&p[8]);
288 str_table = get_unaligned_be32(&p[4 + delta]);
289 sym_table = get_unaligned_be32(&p[16 + delta]);
290 data_sect = get_unaligned_be32(&p[20 + delta]);
291 code_sect = get_unaligned_be32(&p[24 + delta]);
292 debug_sect = get_unaligned_be32(&p[28 + delta]);
293 action_count = get_unaligned_be32(&p[40 + delta]);
294 proc_count = get_unaligned_be32(&p[44 + delta]);
295 sym_count = get_unaligned_be32(&p[48 + (2 * delta)]);
296 }
297
298 if ((first_word != 0x4A414D00L) && (first_word != 0x4A414D01L)) {
299 done = 1;
300 status = -EIO;
301 goto exit_done;
302 }
303
304 if (sym_count <= 0)
305 goto exit_done;
306
307 vars = kzalloc(sym_count * sizeof(long), GFP_KERNEL);
308
309 if (vars == NULL)
310 status = -ENOMEM;
311
312 if (status == 0) {
313 var_size = kzalloc(sym_count * sizeof(s32), GFP_KERNEL);
314
315 if (var_size == NULL)
316 status = -ENOMEM;
317 }
318
319 if (status == 0) {
320 attrs = kzalloc(sym_count, GFP_KERNEL);
321
322 if (attrs == NULL)
323 status = -ENOMEM;
324 }
325
326 if ((status == 0) && (version > 0)) {
327 proc_attributes = kzalloc(proc_count, GFP_KERNEL);
328
329 if (proc_attributes == NULL)
330 status = -ENOMEM;
331 }
332
333 if (status != 0)
334 goto exit_done;
335
336 delta = version * 2;
337
338 for (i = 0; i < sym_count; ++i) {
339 offset = (sym_table + ((11 + delta) * i));
340
341 value = get_unaligned_be32(&p[offset + 3 + delta]);
342
343 attrs[i] = p[offset];
344
345 /*
346 * use bit 7 of attribute byte to indicate that
347 * this buffer was dynamically allocated
348 * and should be freed later
349 */
350 attrs[i] &= 0x7f;
351
352 var_size[i] = get_unaligned_be32(&p[offset + 7 + delta]);
353
354 /*
355 * Attribute bits:
356 * bit 0: 0 = read-only, 1 = read-write
357 * bit 1: 0 = not compressed, 1 = compressed
358 * bit 2: 0 = not initialized, 1 = initialized
359 * bit 3: 0 = scalar, 1 = array
360 * bit 4: 0 = Boolean, 1 = integer
361 * bit 5: 0 = declared variable,
362 * 1 = compiler created temporary variable
363 */
364
365 if ((attrs[i] & 0x0c) == 0x04)
366 /* initialized scalar variable */
367 vars[i] = value;
368 else if ((attrs[i] & 0x1e) == 0x0e) {
369 /* initialized compressed Boolean array */
370 uncomp_size = get_unaligned_le32(&p[data_sect + value]);
371
372 /* allocate a buffer for the uncompressed data */
373 vars[i] = (long)kzalloc(uncomp_size, GFP_KERNEL);
374 if (vars[i] == 0L)
375 status = -ENOMEM;
376 else {
377 /* set flag so buffer will be freed later */
378 attrs[i] |= 0x80;
379
380 /* uncompress the data */
381 if (altera_shrink(&p[data_sect + value],
382 var_size[i],
383 (u8 *)vars[i],
384 uncomp_size,
385 version) != uncomp_size)
386 /* decompression failed */
387 status = -EIO;
388 else
389 var_size[i] = uncomp_size * 8L;
390
391 }
392 } else if ((attrs[i] & 0x1e) == 0x0c) {
393 /* initialized Boolean array */
394 vars[i] = value + data_sect + (long)p;
395 } else if ((attrs[i] & 0x1c) == 0x1c) {
396 /* initialized integer array */
397 vars[i] = value + data_sect;
398 } else if ((attrs[i] & 0x0c) == 0x08) {
399 /* uninitialized array */
400
401 /* flag attrs so that memory is freed */
402 attrs[i] |= 0x80;
403
404 if (var_size[i] > 0) {
405 u32 size;
406
407 if (attrs[i] & 0x10)
408 /* integer array */
409 size = (var_size[i] * sizeof(s32));
410 else
411 /* Boolean array */
412 size = ((var_size[i] + 7L) / 8L);
413
414 vars[i] = (long)kzalloc(size, GFP_KERNEL);
415
416 if (vars[i] == 0) {
417 status = -ENOMEM;
418 } else {
419 /* zero out memory */
420 for (j = 0; j < size; ++j)
421 ((u8 *)(vars[i]))[j] = 0;
422
423 }
424 } else
425 vars[i] = 0;
426
427 } else
428 vars[i] = 0;
429
430 }
431
432 exit_done:
433 if (status != 0)
434 done = 1;
435
436 altera_jinit(astate);
437
438 pc = code_sect;
439 msg_buff[0] = '\0';
440
441 /*
442 * For JBC version 2, we will execute the procedures corresponding to
443 * the selected ACTION
444 */
445 if (version > 0) {
446 if (aconf->action == NULL) {
447 status = -EINVAL;
448 done = 1;
449 } else {
450 int action_found = 0;
451 for (i = 0; (i < action_count) && !action_found; ++i) {
452 name_id = get_unaligned_be32(&p[action_table +
453 (12 * i)]);
454
455 name = &p[str_table + name_id];
456
457 if (strncasecmp(aconf->action, name, strlen(name)) == 0) {
458 action_found = 1;
459 current_proc =
460 get_unaligned_be32(&p[action_table +
461 (12 * i) + 8]);
462 }
463 }
464
465 if (!action_found) {
466 status = -EINVAL;
467 done = 1;
468 }
469 }
470
471 if (status == 0) {
472 int first_time = 1;
473 i = current_proc;
474 while ((i != 0) || first_time) {
475 first_time = 0;
476 /* check procedure attribute byte */
477 proc_attributes[i] =
478 (p[proc_table +
479 (13 * i) + 8] &
480 0x03);
481
482 /*
483 * BIT0 - OPTIONAL
484 * BIT1 - RECOMMENDED
485 * BIT6 - FORCED OFF
486 * BIT7 - FORCED ON
487 */
488
489 i = get_unaligned_be32(&p[proc_table +
490 (13 * i) + 4]);
491 }
492
493 /*
494 * Set current_proc to the first procedure
495 * to be executed
496 */
497 i = current_proc;
498 while ((i != 0) &&
499 ((proc_attributes[i] == 1) ||
500 ((proc_attributes[i] & 0xc0) == 0x40))) {
501 i = get_unaligned_be32(&p[proc_table +
502 (13 * i) + 4]);
503 }
504
505 if ((i != 0) || ((i == 0) && (current_proc == 0) &&
506 ((proc_attributes[0] != 1) &&
507 ((proc_attributes[0] & 0xc0) != 0x40)))) {
508 current_proc = i;
509 pc = code_sect +
510 get_unaligned_be32(&p[proc_table +
511 (13 * i) + 9]);
512 if ((pc < code_sect) || (pc >= debug_sect))
513 status = -ERANGE;
514 } else
515 /* there are no procedures to execute! */
516 done = 1;
517
518 }
519 }
520
521 msg_buff[0] = '\0';
522
523 while (!done) {
524 opcode = (p[pc] & 0xff);
525 opcode_address = pc;
526 ++pc;
527
528 if (debug > 1)
529 printk("opcode: %02x\n", opcode);
530
531 arg_count = (opcode >> 6) & 3;
532 for (i = 0; i < arg_count; ++i) {
533 args[i] = get_unaligned_be32(&p[pc]);
534 pc += 4;
535 }
536
537 switch (opcode) {
538 case OP_NOP:
539 break;
540 case OP_DUP:
541 if (altera_check_stack(stack_ptr, 1, &status)) {
542 stack[stack_ptr] = stack[stack_ptr - 1];
543 ++stack_ptr;
544 }
545 break;
546 case OP_SWP:
547 if (altera_check_stack(stack_ptr, 2, &status)) {
548 long_tmp = stack[stack_ptr - 2];
549 stack[stack_ptr - 2] = stack[stack_ptr - 1];
550 stack[stack_ptr - 1] = long_tmp;
551 }
552 break;
553 case OP_ADD:
554 if (altera_check_stack(stack_ptr, 2, &status)) {
555 --stack_ptr;
556 stack[stack_ptr - 1] += stack[stack_ptr];
557 }
558 break;
559 case OP_SUB:
560 if (altera_check_stack(stack_ptr, 2, &status)) {
561 --stack_ptr;
562 stack[stack_ptr - 1] -= stack[stack_ptr];
563 }
564 break;
565 case OP_MULT:
566 if (altera_check_stack(stack_ptr, 2, &status)) {
567 --stack_ptr;
568 stack[stack_ptr - 1] *= stack[stack_ptr];
569 }
570 break;
571 case OP_DIV:
572 if (altera_check_stack(stack_ptr, 2, &status)) {
573 --stack_ptr;
574 stack[stack_ptr - 1] /= stack[stack_ptr];
575 }
576 break;
577 case OP_MOD:
578 if (altera_check_stack(stack_ptr, 2, &status)) {
579 --stack_ptr;
580 stack[stack_ptr - 1] %= stack[stack_ptr];
581 }
582 break;
583 case OP_SHL:
584 if (altera_check_stack(stack_ptr, 2, &status)) {
585 --stack_ptr;
586 stack[stack_ptr - 1] <<= stack[stack_ptr];
587 }
588 break;
589 case OP_SHR:
590 if (altera_check_stack(stack_ptr, 2, &status)) {
591 --stack_ptr;
592 stack[stack_ptr - 1] >>= stack[stack_ptr];
593 }
594 break;
595 case OP_NOT:
596 if (altera_check_stack(stack_ptr, 1, &status))
597 stack[stack_ptr - 1] ^= (-1L);
598
599 break;
600 case OP_AND:
601 if (altera_check_stack(stack_ptr, 2, &status)) {
602 --stack_ptr;
603 stack[stack_ptr - 1] &= stack[stack_ptr];
604 }
605 break;
606 case OP_OR:
607 if (altera_check_stack(stack_ptr, 2, &status)) {
608 --stack_ptr;
609 stack[stack_ptr - 1] |= stack[stack_ptr];
610 }
611 break;
612 case OP_XOR:
613 if (altera_check_stack(stack_ptr, 2, &status)) {
614 --stack_ptr;
615 stack[stack_ptr - 1] ^= stack[stack_ptr];
616 }
617 break;
618 case OP_INV:
619 if (!altera_check_stack(stack_ptr, 1, &status))
620 break;
621 stack[stack_ptr - 1] = stack[stack_ptr - 1] ? 0L : 1L;
622 break;
623 case OP_GT:
624 if (!altera_check_stack(stack_ptr, 2, &status))
625 break;
626 --stack_ptr;
627 stack[stack_ptr - 1] =
628 (stack[stack_ptr - 1] > stack[stack_ptr]) ?
629 1L : 0L;
630
631 break;
632 case OP_LT:
633 if (!altera_check_stack(stack_ptr, 2, &status))
634 break;
635 --stack_ptr;
636 stack[stack_ptr - 1] =
637 (stack[stack_ptr - 1] < stack[stack_ptr]) ?
638 1L : 0L;
639
640 break;
641 case OP_RET:
642 if ((version > 0) && (stack_ptr == 0)) {
643 /*
644 * We completed one of the main procedures
645 * of an ACTION.
646 * Find the next procedure
647 * to be executed and jump to it.
648 * If there are no more procedures, then EXIT.
649 */
650 i = get_unaligned_be32(&p[proc_table +
651 (13 * current_proc) + 4]);
652 while ((i != 0) &&
653 ((proc_attributes[i] == 1) ||
654 ((proc_attributes[i] & 0xc0) == 0x40)))
655 i = get_unaligned_be32(&p[proc_table +
656 (13 * i) + 4]);
657
658 if (i == 0) {
659 /* no procedures to execute! */
660 done = 1;
661 *exit_code = 0; /* success */
662 } else {
663 current_proc = i;
664 pc = code_sect + get_unaligned_be32(
665 &p[proc_table +
666 (13 * i) + 9]);
667 if ((pc < code_sect) ||
668 (pc >= debug_sect))
669 status = -ERANGE;
670 }
671
672 } else
673 if (altera_check_stack(stack_ptr, 1, &status)) {
674 pc = stack[--stack_ptr] + code_sect;
675 if ((pc <= code_sect) ||
676 (pc >= debug_sect))
677 status = -ERANGE;
678
679 }
680
681 break;
682 case OP_CMPS:
683 /*
684 * Array short compare
685 * ...stack 0 is source 1 value
686 * ...stack 1 is source 2 value
687 * ...stack 2 is mask value
688 * ...stack 3 is count
689 */
690 if (altera_check_stack(stack_ptr, 4, &status)) {
691 s32 a = stack[--stack_ptr];
692 s32 b = stack[--stack_ptr];
693 long_tmp = stack[--stack_ptr];
694 count = stack[stack_ptr - 1];
695
696 if ((count < 1) || (count > 32))
697 status = -ERANGE;
698 else {
699 long_tmp &= ((-1L) >> (32 - count));
700
701 stack[stack_ptr - 1] =
702 ((a & long_tmp) == (b & long_tmp))
703 ? 1L : 0L;
704 }
705 }
706 break;
707 case OP_PINT:
708 /*
709 * PRINT add integer
710 * ...stack 0 is integer value
711 */
712 if (!altera_check_stack(stack_ptr, 1, &status))
713 break;
714 sprintf(&msg_buff[strlen(msg_buff)],
715 "%ld", stack[--stack_ptr]);
716 break;
717 case OP_PRNT:
718 /* PRINT finish */
719 if (debug)
720 printk(msg_buff, "\n");
721
722 msg_buff[0] = '\0';
723 break;
724 case OP_DSS:
725 /*
726 * DRSCAN short
727 * ...stack 0 is scan data
728 * ...stack 1 is count
729 */
730 if (!altera_check_stack(stack_ptr, 2, &status))
731 break;
732 long_tmp = stack[--stack_ptr];
733 count = stack[--stack_ptr];
734 put_unaligned_le32(long_tmp, &charbuf[0]);
735 status = altera_drscan(astate, count, charbuf, 0);
736 break;
737 case OP_DSSC:
738 /*
739 * DRSCAN short with capture
740 * ...stack 0 is scan data
741 * ...stack 1 is count
742 */
743 if (!altera_check_stack(stack_ptr, 2, &status))
744 break;
745 long_tmp = stack[--stack_ptr];
746 count = stack[stack_ptr - 1];
747 put_unaligned_le32(long_tmp, &charbuf[0]);
748 status = altera_swap_dr(astate, count, charbuf,
749 0, charbuf, 0);
750 stack[stack_ptr - 1] = get_unaligned_le32(&charbuf[0]);
751 break;
752 case OP_ISS:
753 /*
754 * IRSCAN short
755 * ...stack 0 is scan data
756 * ...stack 1 is count
757 */
758 if (!altera_check_stack(stack_ptr, 2, &status))
759 break;
760 long_tmp = stack[--stack_ptr];
761 count = stack[--stack_ptr];
762 put_unaligned_le32(long_tmp, &charbuf[0]);
763 status = altera_irscan(astate, count, charbuf, 0);
764 break;
765 case OP_ISSC:
766 /*
767 * IRSCAN short with capture
768 * ...stack 0 is scan data
769 * ...stack 1 is count
770 */
771 if (!altera_check_stack(stack_ptr, 2, &status))
772 break;
773 long_tmp = stack[--stack_ptr];
774 count = stack[stack_ptr - 1];
775 put_unaligned_le32(long_tmp, &charbuf[0]);
776 status = altera_swap_ir(astate, count, charbuf,
777 0, charbuf, 0);
778 stack[stack_ptr - 1] = get_unaligned_le32(&charbuf[0]);
779 break;
780 case OP_DPR:
781 if (!altera_check_stack(stack_ptr, 1, &status))
782 break;
783 count = stack[--stack_ptr];
784 status = altera_set_dr_pre(&astate->js, count, 0, NULL);
785 break;
786 case OP_DPRL:
787 /*
788 * DRPRE with literal data
789 * ...stack 0 is count
790 * ...stack 1 is literal data
791 */
792 if (!altera_check_stack(stack_ptr, 2, &status))
793 break;
794 count = stack[--stack_ptr];
795 long_tmp = stack[--stack_ptr];
796 put_unaligned_le32(long_tmp, &charbuf[0]);
797 status = altera_set_dr_pre(&astate->js, count, 0,
798 charbuf);
799 break;
800 case OP_DPO:
801 /*
802 * DRPOST
803 * ...stack 0 is count
804 */
805 if (altera_check_stack(stack_ptr, 1, &status)) {
806 count = stack[--stack_ptr];
807 status = altera_set_dr_post(&astate->js, count,
808 0, NULL);
809 }
810 break;
811 case OP_DPOL:
812 /*
813 * DRPOST with literal data
814 * ...stack 0 is count
815 * ...stack 1 is literal data
816 */
817 if (!altera_check_stack(stack_ptr, 2, &status))
818 break;
819 count = stack[--stack_ptr];
820 long_tmp = stack[--stack_ptr];
821 put_unaligned_le32(long_tmp, &charbuf[0]);
822 status = altera_set_dr_post(&astate->js, count, 0,
823 charbuf);
824 break;
825 case OP_IPR:
826 if (altera_check_stack(stack_ptr, 1, &status)) {
827 count = stack[--stack_ptr];
828 status = altera_set_ir_pre(&astate->js, count,
829 0, NULL);
830 }
831 break;
832 case OP_IPRL:
833 /*
834 * IRPRE with literal data
835 * ...stack 0 is count
836 * ...stack 1 is literal data
837 */
838 if (altera_check_stack(stack_ptr, 2, &status)) {
839 count = stack[--stack_ptr];
840 long_tmp = stack[--stack_ptr];
841 put_unaligned_le32(long_tmp, &charbuf[0]);
842 status = altera_set_ir_pre(&astate->js, count,
843 0, charbuf);
844 }
845 break;
846 case OP_IPO:
847 /*
848 * IRPOST
849 * ...stack 0 is count
850 */
851 if (altera_check_stack(stack_ptr, 1, &status)) {
852 count = stack[--stack_ptr];
853 status = altera_set_ir_post(&astate->js, count,
854 0, NULL);
855 }
856 break;
857 case OP_IPOL:
858 /*
859 * IRPOST with literal data
860 * ...stack 0 is count
861 * ...stack 1 is literal data
862 */
863 if (!altera_check_stack(stack_ptr, 2, &status))
864 break;
865 count = stack[--stack_ptr];
866 long_tmp = stack[--stack_ptr];
867 put_unaligned_le32(long_tmp, &charbuf[0]);
868 status = altera_set_ir_post(&astate->js, count, 0,
869 charbuf);
870 break;
871 case OP_PCHR:
872 if (altera_check_stack(stack_ptr, 1, &status)) {
873 u8 ch;
874 count = strlen(msg_buff);
875 ch = (char) stack[--stack_ptr];
876 if ((ch < 1) || (ch > 127)) {
877 /*
878 * character code out of range
879 * instead of flagging an error,
880 * force the value to 127
881 */
882 ch = 127;
883 }
884 msg_buff[count] = ch;
885 msg_buff[count + 1] = '\0';
886 }
887 break;
888 case OP_EXIT:
889 if (altera_check_stack(stack_ptr, 1, &status))
890 *exit_code = stack[--stack_ptr];
891
892 done = 1;
893 break;
894 case OP_EQU:
895 if (!altera_check_stack(stack_ptr, 2, &status))
896 break;
897 --stack_ptr;
898 stack[stack_ptr - 1] =
899 (stack[stack_ptr - 1] == stack[stack_ptr]) ?
900 1L : 0L;
901 break;
902 case OP_POPT:
903 if (altera_check_stack(stack_ptr, 1, &status))
904 --stack_ptr;
905
906 break;
907 case OP_ABS:
908 if (!altera_check_stack(stack_ptr, 1, &status))
909 break;
910 if (stack[stack_ptr - 1] < 0)
911 stack[stack_ptr - 1] = 0 - stack[stack_ptr - 1];
912
913 break;
914 case OP_BCH0:
915 /*
916 * Batch operation 0
917 * SWP
918 * SWPN 7
919 * SWP
920 * SWPN 6
921 * DUPN 8
922 * SWPN 2
923 * SWP
924 * DUPN 6
925 * DUPN 6
926 */
927
928 /* SWP */
929 if (altera_check_stack(stack_ptr, 2, &status)) {
930 long_tmp = stack[stack_ptr - 2];
931 stack[stack_ptr - 2] = stack[stack_ptr - 1];
932 stack[stack_ptr - 1] = long_tmp;
933 }
934
935 /* SWPN 7 */
936 index = 7 + 1;
937 if (altera_check_stack(stack_ptr, index, &status)) {
938 long_tmp = stack[stack_ptr - index];
939 stack[stack_ptr - index] = stack[stack_ptr - 1];
940 stack[stack_ptr - 1] = long_tmp;
941 }
942
943 /* SWP */
944 if (altera_check_stack(stack_ptr, 2, &status)) {
945 long_tmp = stack[stack_ptr - 2];
946 stack[stack_ptr - 2] = stack[stack_ptr - 1];
947 stack[stack_ptr - 1] = long_tmp;
948 }
949
950 /* SWPN 6 */
951 index = 6 + 1;
952 if (altera_check_stack(stack_ptr, index, &status)) {
953 long_tmp = stack[stack_ptr - index];
954 stack[stack_ptr - index] = stack[stack_ptr - 1];
955 stack[stack_ptr - 1] = long_tmp;
956 }
957
958 /* DUPN 8 */
959 index = 8 + 1;
960 if (altera_check_stack(stack_ptr, index, &status)) {
961 stack[stack_ptr] = stack[stack_ptr - index];
962 ++stack_ptr;
963 }
964
965 /* SWPN 2 */
966 index = 2 + 1;
967 if (altera_check_stack(stack_ptr, index, &status)) {
968 long_tmp = stack[stack_ptr - index];
969 stack[stack_ptr - index] = stack[stack_ptr - 1];
970 stack[stack_ptr - 1] = long_tmp;
971 }
972
973 /* SWP */
974 if (altera_check_stack(stack_ptr, 2, &status)) {
975 long_tmp = stack[stack_ptr - 2];
976 stack[stack_ptr - 2] = stack[stack_ptr - 1];
977 stack[stack_ptr - 1] = long_tmp;
978 }
979
980 /* DUPN 6 */
981 index = 6 + 1;
982 if (altera_check_stack(stack_ptr, index, &status)) {
983 stack[stack_ptr] = stack[stack_ptr - index];
984 ++stack_ptr;
985 }
986
987 /* DUPN 6 */
988 index = 6 + 1;
989 if (altera_check_stack(stack_ptr, index, &status)) {
990 stack[stack_ptr] = stack[stack_ptr - index];
991 ++stack_ptr;
992 }
993 break;
994 case OP_PSH0:
995 stack[stack_ptr++] = 0;
996 break;
997 case OP_PSHL:
998 stack[stack_ptr++] = (s32) args[0];
999 break;
1000 case OP_PSHV:
1001 stack[stack_ptr++] = vars[args[0]];
1002 break;
1003 case OP_JMP:
1004 pc = args[0] + code_sect;
1005 if ((pc < code_sect) || (pc >= debug_sect))
1006 status = -ERANGE;
1007 break;
1008 case OP_CALL:
1009 stack[stack_ptr++] = pc;
1010 pc = args[0] + code_sect;
1011 if ((pc < code_sect) || (pc >= debug_sect))
1012 status = -ERANGE;
1013 break;
1014 case OP_NEXT:
1015 /*
1016 * Process FOR / NEXT loop
1017 * ...argument 0 is variable ID
1018 * ...stack 0 is step value
1019 * ...stack 1 is end value
1020 * ...stack 2 is top address
1021 */
1022 if (altera_check_stack(stack_ptr, 3, &status)) {
1023 s32 step = stack[stack_ptr - 1];
1024 s32 end = stack[stack_ptr - 2];
1025 s32 top = stack[stack_ptr - 3];
1026 s32 iterator = vars[args[0]];
1027 int break_out = 0;
1028
1029 if (step < 0) {
1030 if (iterator <= end)
1031 break_out = 1;
1032 } else if (iterator >= end)
1033 break_out = 1;
1034
1035 if (break_out) {
1036 stack_ptr -= 3;
1037 } else {
1038 vars[args[0]] = iterator + step;
1039 pc = top + code_sect;
1040 if ((pc < code_sect) ||
1041 (pc >= debug_sect))
1042 status = -ERANGE;
1043 }
1044 }
1045 break;
1046 case OP_PSTR:
1047 /*
1048 * PRINT add string
1049 * ...argument 0 is string ID
1050 */
1051 count = strlen(msg_buff);
1052 strlcpy(&msg_buff[count],
1053 &p[str_table + args[0]],
1054 ALTERA_MESSAGE_LENGTH - count);
1055 break;
1056 case OP_SINT:
1057 /*
1058 * STATE intermediate state
1059 * ...argument 0 is state code
1060 */
1061 status = altera_goto_jstate(astate, args[0]);
1062 break;
1063 case OP_ST:
1064 /*
1065 * STATE final state
1066 * ...argument 0 is state code
1067 */
1068 status = altera_goto_jstate(astate, args[0]);
1069 break;
1070 case OP_ISTP:
1071 /*
1072 * IRSTOP state
1073 * ...argument 0 is state code
1074 */
1075 status = altera_set_irstop(&astate->js, args[0]);
1076 break;
1077 case OP_DSTP:
1078 /*
1079 * DRSTOP state
1080 * ...argument 0 is state code
1081 */
1082 status = altera_set_drstop(&astate->js, args[0]);
1083 break;
1084
1085 case OP_SWPN:
1086 /*
1087 * Exchange top with Nth stack value
1088 * ...argument 0 is 0-based stack entry
1089 * to swap with top element
1090 */
1091 index = (args[0]) + 1;
1092 if (altera_check_stack(stack_ptr, index, &status)) {
1093 long_tmp = stack[stack_ptr - index];
1094 stack[stack_ptr - index] = stack[stack_ptr - 1];
1095 stack[stack_ptr - 1] = long_tmp;
1096 }
1097 break;
1098 case OP_DUPN:
1099 /*
1100 * Duplicate Nth stack value
1101 * ...argument 0 is 0-based stack entry to duplicate
1102 */
1103 index = (args[0]) + 1;
1104 if (altera_check_stack(stack_ptr, index, &status)) {
1105 stack[stack_ptr] = stack[stack_ptr - index];
1106 ++stack_ptr;
1107 }
1108 break;
1109 case OP_POPV:
1110 /*
1111 * Pop stack into scalar variable
1112 * ...argument 0 is variable ID
1113 * ...stack 0 is value
1114 */
1115 if (altera_check_stack(stack_ptr, 1, &status))
1116 vars[args[0]] = stack[--stack_ptr];
1117
1118 break;
1119 case OP_POPE:
1120 /*
1121 * Pop stack into integer array element
1122 * ...argument 0 is variable ID
1123 * ...stack 0 is array index
1124 * ...stack 1 is value
1125 */
1126 if (!altera_check_stack(stack_ptr, 2, &status))
1127 break;
1128 variable_id = args[0];
1129
1130 /*
1131 * If variable is read-only,
1132 * convert to writable array
1133 */
1134 if ((version > 0) &&
1135 ((attrs[variable_id] & 0x9c) == 0x1c)) {
1136 /* Allocate a writable buffer for this array */
1137 count = var_size[variable_id];
1138 long_tmp = vars[variable_id];
1139 longptr_tmp = kzalloc(count * sizeof(long),
1140 GFP_KERNEL);
1141 vars[variable_id] = (long)longptr_tmp;
1142
1143 if (vars[variable_id] == 0) {
1144 status = -ENOMEM;
1145 break;
1146 }
1147
1148 /* copy previous contents into buffer */
1149 for (i = 0; i < count; ++i) {
1150 longptr_tmp[i] =
1151 get_unaligned_be32(&p[long_tmp]);
1152 long_tmp += sizeof(long);
1153 }
1154
1155 /*
1156 * set bit 7 - buffer was
1157 * dynamically allocated
1158 */
1159 attrs[variable_id] |= 0x80;
1160
1161 /* clear bit 2 - variable is writable */
1162 attrs[variable_id] &= ~0x04;
1163 attrs[variable_id] |= 0x01;
1164
1165 }
1166
1167 /* check that variable is a writable integer array */
1168 if ((attrs[variable_id] & 0x1c) != 0x18)
1169 status = -ERANGE;
1170 else {
1171 longptr_tmp = (long *)vars[variable_id];
1172
1173 /* pop the array index */
1174 index = stack[--stack_ptr];
1175
1176 /* pop the value and store it into the array */
1177 longptr_tmp[index] = stack[--stack_ptr];
1178 }
1179
1180 break;
1181 case OP_POPA:
1182 /*
1183 * Pop stack into Boolean array
1184 * ...argument 0 is variable ID
1185 * ...stack 0 is count
1186 * ...stack 1 is array index
1187 * ...stack 2 is value
1188 */
1189 if (!altera_check_stack(stack_ptr, 3, &status))
1190 break;
1191 variable_id = args[0];
1192
1193 /*
1194 * If variable is read-only,
1195 * convert to writable array
1196 */
1197 if ((version > 0) &&
1198 ((attrs[variable_id] & 0x9c) == 0x0c)) {
1199 /* Allocate a writable buffer for this array */
1200 long_tmp =
1201 (var_size[variable_id] + 7L) >> 3L;
1202 charptr_tmp2 = (u8 *)vars[variable_id];
1203 charptr_tmp =
1204 kzalloc(long_tmp, GFP_KERNEL);
1205 vars[variable_id] = (long)charptr_tmp;
1206
1207 if (vars[variable_id] == 0) {
1208 status = -ENOMEM;
1209 break;
1210 }
1211
1212 /* zero the buffer */
1213 for (long_idx = 0L;
1214 long_idx < long_tmp;
1215 ++long_idx) {
1216 charptr_tmp[long_idx] = 0;
1217 }
1218
1219 /* copy previous contents into buffer */
1220 for (long_idx = 0L;
1221 long_idx < var_size[variable_id];
1222 ++long_idx) {
1223 long_idx2 = long_idx;
1224
1225 if (charptr_tmp2[long_idx2 >> 3] &
1226 (1 << (long_idx2 & 7))) {
1227 charptr_tmp[long_idx >> 3] |=
1228 (1 << (long_idx & 7));
1229 }
1230 }
1231
1232 /*
1233 * set bit 7 - buffer was
1234 * dynamically allocated
1235 */
1236 attrs[variable_id] |= 0x80;
1237
1238 /* clear bit 2 - variable is writable */
1239 attrs[variable_id] &= ~0x04;
1240 attrs[variable_id] |= 0x01;
1241
1242 }
1243
1244 /*
1245 * check that variable is
1246 * a writable Boolean array
1247 */
1248 if ((attrs[variable_id] & 0x1c) != 0x08) {
1249 status = -ERANGE;
1250 break;
1251 }
1252
1253 charptr_tmp = (u8 *)vars[variable_id];
1254
1255 /* pop the count (number of bits to copy) */
1256 long_count = stack[--stack_ptr];
1257
1258 /* pop the array index */
1259 long_idx = stack[--stack_ptr];
1260
1261 reverse = 0;
1262
1263 if (version > 0) {
1264 /*
1265 * stack 0 = array right index
1266 * stack 1 = array left index
1267 */
1268
1269 if (long_idx > long_count) {
1270 reverse = 1;
1271 long_tmp = long_count;
1272 long_count = 1 + long_idx -
1273 long_count;
1274 long_idx = long_tmp;
1275
1276 /* reverse POPA is not supported */
1277 status = -ERANGE;
1278 break;
1279 } else
1280 long_count = 1 + long_count -
1281 long_idx;
1282
1283 }
1284
1285 /* pop the data */
1286 long_tmp = stack[--stack_ptr];
1287
1288 if (long_count < 1) {
1289 status = -ERANGE;
1290 break;
1291 }
1292
1293 for (i = 0; i < long_count; ++i) {
1294 if (long_tmp & (1L << (s32) i))
1295 charptr_tmp[long_idx >> 3L] |=
1296 (1L << (long_idx & 7L));
1297 else
1298 charptr_tmp[long_idx >> 3L] &=
1299 ~(1L << (long_idx & 7L));
1300
1301 ++long_idx;
1302 }
1303
1304 break;
1305 case OP_JMPZ:
1306 /*
1307 * Pop stack and branch if zero
1308 * ...argument 0 is address
1309 * ...stack 0 is condition value
1310 */
1311 if (altera_check_stack(stack_ptr, 1, &status)) {
1312 if (stack[--stack_ptr] == 0) {
1313 pc = args[0] + code_sect;
1314 if ((pc < code_sect) ||
1315 (pc >= debug_sect))
1316 status = -ERANGE;
1317 }
1318 }
1319 break;
1320 case OP_DS:
1321 case OP_IS:
1322 /*
1323 * DRSCAN
1324 * IRSCAN
1325 * ...argument 0 is scan data variable ID
1326 * ...stack 0 is array index
1327 * ...stack 1 is count
1328 */
1329 if (!altera_check_stack(stack_ptr, 2, &status))
1330 break;
1331 long_idx = stack[--stack_ptr];
1332 long_count = stack[--stack_ptr];
1333 reverse = 0;
1334 if (version > 0) {
1335 /*
1336 * stack 0 = array right index
1337 * stack 1 = array left index
1338 * stack 2 = count
1339 */
1340 long_tmp = long_count;
1341 long_count = stack[--stack_ptr];
1342
1343 if (long_idx > long_tmp) {
1344 reverse = 1;
1345 long_idx = long_tmp;
1346 }
1347 }
1348
1349 charptr_tmp = (u8 *)vars[args[0]];
1350
1351 if (reverse) {
1352 /*
1353 * allocate a buffer
1354 * and reverse the data order
1355 */
1356 charptr_tmp2 = charptr_tmp;
1357 charptr_tmp = kzalloc((long_count >> 3) + 1,
1358 GFP_KERNEL);
1359 if (charptr_tmp == NULL) {
1360 status = -ENOMEM;
1361 break;
1362 }
1363
1364 long_tmp = long_idx + long_count - 1;
1365 long_idx2 = 0;
1366 while (long_idx2 < long_count) {
1367 if (charptr_tmp2[long_tmp >> 3] &
1368 (1 << (long_tmp & 7)))
1369 charptr_tmp[long_idx2 >> 3] |=
1370 (1 << (long_idx2 & 7));
1371 else
1372 charptr_tmp[long_idx2 >> 3] &=
1373 ~(1 << (long_idx2 & 7));
1374
1375 --long_tmp;
1376 ++long_idx2;
1377 }
1378 }
1379
1380 if (opcode == 0x51) /* DS */
1381 status = altera_drscan(astate, long_count,
1382 charptr_tmp, long_idx);
1383 else /* IS */
1384 status = altera_irscan(astate, long_count,
1385 charptr_tmp, long_idx);
1386
1387 if (reverse)
1388 kfree(charptr_tmp);
1389
1390 break;
1391 case OP_DPRA:
1392 /*
1393 * DRPRE with array data
1394 * ...argument 0 is variable ID
1395 * ...stack 0 is array index
1396 * ...stack 1 is count
1397 */
1398 if (!altera_check_stack(stack_ptr, 2, &status))
1399 break;
1400 index = stack[--stack_ptr];
1401 count = stack[--stack_ptr];
1402
1403 if (version > 0)
1404 /*
1405 * stack 0 = array right index
1406 * stack 1 = array left index
1407 */
1408 count = 1 + count - index;
1409
1410 charptr_tmp = (u8 *)vars[args[0]];
1411 status = altera_set_dr_pre(&astate->js, count, index,
1412 charptr_tmp);
1413 break;
1414 case OP_DPOA:
1415 /*
1416 * DRPOST with array data
1417 * ...argument 0 is variable ID
1418 * ...stack 0 is array index
1419 * ...stack 1 is count
1420 */
1421 if (!altera_check_stack(stack_ptr, 2, &status))
1422 break;
1423 index = stack[--stack_ptr];
1424 count = stack[--stack_ptr];
1425
1426 if (version > 0)
1427 /*
1428 * stack 0 = array right index
1429 * stack 1 = array left index
1430 */
1431 count = 1 + count - index;
1432
1433 charptr_tmp = (u8 *)vars[args[0]];
1434 status = altera_set_dr_post(&astate->js, count, index,
1435 charptr_tmp);
1436 break;
1437 case OP_IPRA:
1438 /*
1439 * IRPRE with array data
1440 * ...argument 0 is variable ID
1441 * ...stack 0 is array index
1442 * ...stack 1 is count
1443 */
1444 if (!altera_check_stack(stack_ptr, 2, &status))
1445 break;
1446 index = stack[--stack_ptr];
1447 count = stack[--stack_ptr];
1448
1449 if (version > 0)
1450 /*
1451 * stack 0 = array right index
1452 * stack 1 = array left index
1453 */
1454 count = 1 + count - index;
1455
1456 charptr_tmp = (u8 *)vars[args[0]];
1457 status = altera_set_ir_pre(&astate->js, count, index,
1458 charptr_tmp);
1459
1460 break;
1461 case OP_IPOA:
1462 /*
1463 * IRPOST with array data
1464 * ...argument 0 is variable ID
1465 * ...stack 0 is array index
1466 * ...stack 1 is count
1467 */
1468 if (!altera_check_stack(stack_ptr, 2, &status))
1469 break;
1470 index = stack[--stack_ptr];
1471 count = stack[--stack_ptr];
1472
1473 if (version > 0)
1474 /*
1475 * stack 0 = array right index
1476 * stack 1 = array left index
1477 */
1478 count = 1 + count - index;
1479
1480 charptr_tmp = (u8 *)vars[args[0]];
1481 status = altera_set_ir_post(&astate->js, count, index,
1482 charptr_tmp);
1483
1484 break;
1485 case OP_EXPT:
1486 /*
1487 * EXPORT
1488 * ...argument 0 is string ID
1489 * ...stack 0 is integer expression
1490 */
1491 if (altera_check_stack(stack_ptr, 1, &status)) {
1492 name = &p[str_table + args[0]];
1493 long_tmp = stack[--stack_ptr];
1494 altera_export_int(name, long_tmp);
1495 }
1496 break;
1497 case OP_PSHE:
1498 /*
1499 * Push integer array element
1500 * ...argument 0 is variable ID
1501 * ...stack 0 is array index
1502 */
1503 if (!altera_check_stack(stack_ptr, 1, &status))
1504 break;
1505 variable_id = args[0];
1506 index = stack[stack_ptr - 1];
1507
1508 /* check variable type */
1509 if ((attrs[variable_id] & 0x1f) == 0x19) {
1510 /* writable integer array */
1511 longptr_tmp = (long *)vars[variable_id];
1512 stack[stack_ptr - 1] = longptr_tmp[index];
1513 } else if ((attrs[variable_id] & 0x1f) == 0x1c) {
1514 /* read-only integer array */
1515 long_tmp = vars[variable_id] +
1516 (index * sizeof(long));
1517 stack[stack_ptr - 1] =
1518 get_unaligned_be32(&p[long_tmp]);
1519 } else
1520 status = -ERANGE;
1521
1522 break;
1523 case OP_PSHA:
1524 /*
1525 * Push Boolean array
1526 * ...argument 0 is variable ID
1527 * ...stack 0 is count
1528 * ...stack 1 is array index
1529 */
1530 if (!altera_check_stack(stack_ptr, 2, &status))
1531 break;
1532 variable_id = args[0];
1533
1534 /* check that variable is a Boolean array */
1535 if ((attrs[variable_id] & 0x18) != 0x08) {
1536 status = -ERANGE;
1537 break;
1538 }
1539
1540 charptr_tmp = (u8 *)vars[variable_id];
1541
1542 /* pop the count (number of bits to copy) */
1543 count = stack[--stack_ptr];
1544
1545 /* pop the array index */
1546 index = stack[stack_ptr - 1];
1547
1548 if (version > 0)
1549 /*
1550 * stack 0 = array right index
1551 * stack 1 = array left index
1552 */
1553 count = 1 + count - index;
1554
1555 if ((count < 1) || (count > 32)) {
1556 status = -ERANGE;
1557 break;
1558 }
1559
1560 long_tmp = 0L;
1561
1562 for (i = 0; i < count; ++i)
1563 if (charptr_tmp[(i + index) >> 3] &
1564 (1 << ((i + index) & 7)))
1565 long_tmp |= (1L << i);
1566
1567 stack[stack_ptr - 1] = long_tmp;
1568
1569 break;
1570 case OP_DYNA:
1571 /*
1572 * Dynamically change size of array
1573 * ...argument 0 is variable ID
1574 * ...stack 0 is new size
1575 */
1576 if (!altera_check_stack(stack_ptr, 1, &status))
1577 break;
1578 variable_id = args[0];
1579 long_tmp = stack[--stack_ptr];
1580
1581 if (long_tmp > var_size[variable_id]) {
1582 var_size[variable_id] = long_tmp;
1583
1584 if (attrs[variable_id] & 0x10)
1585 /* allocate integer array */
1586 long_tmp *= sizeof(long);
1587 else
1588 /* allocate Boolean array */
1589 long_tmp = (long_tmp + 7) >> 3;
1590
1591 /*
1592 * If the buffer was previously allocated,
1593 * free it
1594 */
1595 if (attrs[variable_id] & 0x80) {
1596 kfree((void *)vars[variable_id]);
1597 vars[variable_id] = 0;
1598 }
1599
1600 /*
1601 * Allocate a new buffer
1602 * of the requested size
1603 */
1604 vars[variable_id] = (long)
1605 kzalloc(long_tmp, GFP_KERNEL);
1606
1607 if (vars[variable_id] == 0) {
1608 status = -ENOMEM;
1609 break;
1610 }
1611
1612 /*
1613 * Set the attribute bit to indicate that
1614 * this buffer was dynamically allocated and
1615 * should be freed later
1616 */
1617 attrs[variable_id] |= 0x80;
1618
1619 /* zero out memory */
1620 count = ((var_size[variable_id] + 7L) /
1621 8L);
1622 charptr_tmp = (u8 *)(vars[variable_id]);
1623 for (index = 0; index < count; ++index)
1624 charptr_tmp[index] = 0;
1625
1626 }
1627
1628 break;
1629 case OP_EXPV:
1630 /*
1631 * Export Boolean array
1632 * ...argument 0 is string ID
1633 * ...stack 0 is variable ID
1634 * ...stack 1 is array right index
1635 * ...stack 2 is array left index
1636 */
1637 if (!altera_check_stack(stack_ptr, 3, &status))
1638 break;
1639 if (version == 0) {
1640 /* EXPV is not supported in JBC 1.0 */
1641 bad_opcode = 1;
1642 break;
1643 }
1644 name = &p[str_table + args[0]];
1645 variable_id = stack[--stack_ptr];
1646 long_idx = stack[--stack_ptr];/* right indx */
1647 long_idx2 = stack[--stack_ptr];/* left indx */
1648
1649 if (long_idx > long_idx2) {
1650 /* reverse indices not supported */
1651 status = -ERANGE;
1652 break;
1653 }
1654
1655 long_count = 1 + long_idx2 - long_idx;
1656
1657 charptr_tmp = (u8 *)vars[variable_id];
1658 charptr_tmp2 = NULL;
1659
1660 if ((long_idx & 7L) != 0) {
1661 s32 k = long_idx;
1662 charptr_tmp2 =
1663 kzalloc(((long_count + 7L) / 8L),
1664 GFP_KERNEL);
1665 if (charptr_tmp2 == NULL) {
1666 status = -ENOMEM;
1667 break;
1668 }
1669
1670 for (i = 0; i < long_count; ++i) {
1671 if (charptr_tmp[k >> 3] &
1672 (1 << (k & 7)))
1673 charptr_tmp2[i >> 3] |=
1674 (1 << (i & 7));
1675 else
1676 charptr_tmp2[i >> 3] &=
1677 ~(1 << (i & 7));
1678
1679 ++k;
1680 }
1681 charptr_tmp = charptr_tmp2;
1682
1683 } else if (long_idx != 0)
1684 charptr_tmp = &charptr_tmp[long_idx >> 3];
1685
1686 altera_export_bool_array(name, charptr_tmp,
1687 long_count);
1688
1689 /* free allocated buffer */
1690 if ((long_idx & 7L) != 0)
1691 kfree(charptr_tmp2);
1692
1693 break;
1694 case OP_COPY: {
1695 /*
1696 * Array copy
1697 * ...argument 0 is dest ID
1698 * ...argument 1 is source ID
1699 * ...stack 0 is count
1700 * ...stack 1 is dest index
1701 * ...stack 2 is source index
1702 */
1703 s32 copy_count;
1704 s32 copy_index;
1705 s32 copy_index2;
1706 s32 destleft;
1707 s32 src_count;
1708 s32 dest_count;
1709 int src_reverse = 0;
1710 int dest_reverse = 0;
1711
1712 if (!altera_check_stack(stack_ptr, 3, &status))
1713 break;
1714
1715 copy_count = stack[--stack_ptr];
1716 copy_index = stack[--stack_ptr];
1717 copy_index2 = stack[--stack_ptr];
1718 reverse = 0;
1719
1720 if (version > 0) {
1721 /*
1722 * stack 0 = source right index
1723 * stack 1 = source left index
1724 * stack 2 = destination right index
1725 * stack 3 = destination left index
1726 */
1727 destleft = stack[--stack_ptr];
1728
1729 if (copy_count > copy_index) {
1730 src_reverse = 1;
1731 reverse = 1;
1732 src_count = 1 + copy_count - copy_index;
1733 /* copy_index = source start index */
1734 } else {
1735 src_count = 1 + copy_index - copy_count;
1736 /* source start index */
1737 copy_index = copy_count;
1738 }
1739
1740 if (copy_index2 > destleft) {
1741 dest_reverse = 1;
1742 reverse = !reverse;
1743 dest_count = 1 + copy_index2 - destleft;
1744 /* destination start index */
1745 copy_index2 = destleft;
1746 } else
1747 dest_count = 1 + destleft - copy_index2;
1748
1749 copy_count = (src_count < dest_count) ?
1750 src_count : dest_count;
1751
1752 if ((src_reverse || dest_reverse) &&
1753 (src_count != dest_count))
1754 /*
1755 * If either the source or destination
1756 * is reversed, we can't tolerate
1757 * a length mismatch, because we
1758 * "left justify" arrays when copying.
1759 * This won't work correctly
1760 * with reversed arrays.
1761 */
1762 status = -ERANGE;
1763
1764 }
1765
1766 count = copy_count;
1767 index = copy_index;
1768 index2 = copy_index2;
1769
1770 /*
1771 * If destination is a read-only array,
1772 * allocate a buffer and convert it to a writable array
1773 */
1774 variable_id = args[1];
1775 if ((version > 0) &&
1776 ((attrs[variable_id] & 0x9c) == 0x0c)) {
1777 /* Allocate a writable buffer for this array */
1778 long_tmp =
1779 (var_size[variable_id] + 7L) >> 3L;
1780 charptr_tmp2 = (u8 *)vars[variable_id];
1781 charptr_tmp =
1782 kzalloc(long_tmp, GFP_KERNEL);
1783 vars[variable_id] = (long)charptr_tmp;
1784
1785 if (vars[variable_id] == 0) {
1786 status = -ENOMEM;
1787 break;
1788 }
1789
1790 /* zero the buffer */
1791 for (long_idx = 0L; long_idx < long_tmp;
1792 ++long_idx)
1793 charptr_tmp[long_idx] = 0;
1794
1795 /* copy previous contents into buffer */
1796 for (long_idx = 0L;
1797 long_idx < var_size[variable_id];
1798 ++long_idx) {
1799 long_idx2 = long_idx;
1800
1801 if (charptr_tmp2[long_idx2 >> 3] &
1802 (1 << (long_idx2 & 7)))
1803 charptr_tmp[long_idx >> 3] |=
1804 (1 << (long_idx & 7));
1805
1806 }
1807
1808 /*
1809 set bit 7 - buffer was dynamically allocated */
1810 attrs[variable_id] |= 0x80;
1811
1812 /* clear bit 2 - variable is writable */
1813 attrs[variable_id] &= ~0x04;
1814 attrs[variable_id] |= 0x01;
1815 }
1816
1817 charptr_tmp = (u8 *)vars[args[1]];
1818 charptr_tmp2 = (u8 *)vars[args[0]];
1819
1820 /* check if destination is a writable Boolean array */
1821 if ((attrs[args[1]] & 0x1c) != 0x08) {
1822 status = -ERANGE;
1823 break;
1824 }
1825
1826 if (count < 1) {
1827 status = -ERANGE;
1828 break;
1829 }
1830
1831 if (reverse)
1832 index2 += (count - 1);
1833
1834 for (i = 0; i < count; ++i) {
1835 if (charptr_tmp2[index >> 3] &
1836 (1 << (index & 7)))
1837 charptr_tmp[index2 >> 3] |=
1838 (1 << (index2 & 7));
1839 else
1840 charptr_tmp[index2 >> 3] &=
1841 ~(1 << (index2 & 7));
1842
1843 ++index;
1844 if (reverse)
1845 --index2;
1846 else
1847 ++index2;
1848 }
1849
1850 break;
1851 }
1852 case OP_DSC:
1853 case OP_ISC: {
1854 /*
1855 * DRSCAN with capture
1856 * IRSCAN with capture
1857 * ...argument 0 is scan data variable ID
1858 * ...argument 1 is capture variable ID
1859 * ...stack 0 is capture index
1860 * ...stack 1 is scan data index
1861 * ...stack 2 is count
1862 */
1863 s32 scan_right, scan_left;
1864 s32 capture_count = 0;
1865 s32 scan_count = 0;
1866 s32 capture_index;
1867 s32 scan_index;
1868
1869 if (!altera_check_stack(stack_ptr, 3, &status))
1870 break;
1871
1872 capture_index = stack[--stack_ptr];
1873 scan_index = stack[--stack_ptr];
1874
1875 if (version > 0) {
1876 /*
1877 * stack 0 = capture right index
1878 * stack 1 = capture left index
1879 * stack 2 = scan right index
1880 * stack 3 = scan left index
1881 * stack 4 = count
1882 */
1883 scan_right = stack[--stack_ptr];
1884 scan_left = stack[--stack_ptr];
1885 capture_count = 1 + scan_index - capture_index;
1886 scan_count = 1 + scan_left - scan_right;
1887 scan_index = scan_right;
1888 }
1889
1890 long_count = stack[--stack_ptr];
1891 /*
1892 * If capture array is read-only, allocate a buffer
1893 * and convert it to a writable array
1894 */
1895 variable_id = args[1];
1896 if ((version > 0) &&
1897 ((attrs[variable_id] & 0x9c) == 0x0c)) {
1898 /* Allocate a writable buffer for this array */
1899 long_tmp =
1900 (var_size[variable_id] + 7L) >> 3L;
1901 charptr_tmp2 = (u8 *)vars[variable_id];
1902 charptr_tmp =
1903 kzalloc(long_tmp, GFP_KERNEL);
1904 vars[variable_id] = (long)charptr_tmp;
1905
1906 if (vars[variable_id] == 0) {
1907 status = -ENOMEM;
1908 break;
1909 }
1910
1911 /* zero the buffer */
1912 for (long_idx = 0L; long_idx < long_tmp;
1913 ++long_idx)
1914 charptr_tmp[long_idx] = 0;
1915
1916 /* copy previous contents into buffer */
1917 for (long_idx = 0L;
1918 long_idx < var_size[variable_id];
1919 ++long_idx) {
1920 long_idx2 = long_idx;
1921
1922 if (charptr_tmp2[long_idx2 >> 3] &
1923 (1 << (long_idx2 & 7)))
1924 charptr_tmp[long_idx >> 3] |=
1925 (1 << (long_idx & 7));
1926
1927 }
1928
1929 /*
1930 * set bit 7 - buffer was
1931 * dynamically allocated
1932 */
1933 attrs[variable_id] |= 0x80;
1934
1935 /* clear bit 2 - variable is writable */
1936 attrs[variable_id] &= ~0x04;
1937 attrs[variable_id] |= 0x01;
1938
1939 }
1940
1941 charptr_tmp = (u8 *)vars[args[0]];
1942 charptr_tmp2 = (u8 *)vars[args[1]];
1943
1944 if ((version > 0) &&
1945 ((long_count > capture_count) ||
1946 (long_count > scan_count))) {
1947 status = -ERANGE;
1948 break;
1949 }
1950
1951 /*
1952 * check that capture array
1953 * is a writable Boolean array
1954 */
1955 if ((attrs[args[1]] & 0x1c) != 0x08) {
1956 status = -ERANGE;
1957 break;
1958 }
1959
1960 if (status == 0) {
1961 if (opcode == 0x82) /* DSC */
1962 status = altera_swap_dr(astate,
1963 long_count,
1964 charptr_tmp,
1965 scan_index,
1966 charptr_tmp2,
1967 capture_index);
1968 else /* ISC */
1969 status = altera_swap_ir(astate,
1970 long_count,
1971 charptr_tmp,
1972 scan_index,
1973 charptr_tmp2,
1974 capture_index);
1975
1976 }
1977
1978 break;
1979 }
1980 case OP_WAIT:
1981 /*
1982 * WAIT
1983 * ...argument 0 is wait state
1984 * ...argument 1 is end state
1985 * ...stack 0 is cycles
1986 * ...stack 1 is microseconds
1987 */
1988 if (!altera_check_stack(stack_ptr, 2, &status))
1989 break;
1990 long_tmp = stack[--stack_ptr];
1991
1992 if (long_tmp != 0L)
1993 status = altera_wait_cycles(astate, long_tmp,
1994 args[0]);
1995
1996 long_tmp = stack[--stack_ptr];
1997
1998 if ((status == 0) && (long_tmp != 0L))
1999 status = altera_wait_msecs(astate,
2000 long_tmp,
2001 args[0]);
2002
2003 if ((status == 0) && (args[1] != args[0]))
2004 status = altera_goto_jstate(astate,
2005 args[1]);
2006
2007 if (version > 0) {
2008 --stack_ptr; /* throw away MAX cycles */
2009 --stack_ptr; /* throw away MAX microseconds */
2010 }
2011 break;
2012 case OP_CMPA: {
2013 /*
2014 * Array compare
2015 * ...argument 0 is source 1 ID
2016 * ...argument 1 is source 2 ID
2017 * ...argument 2 is mask ID
2018 * ...stack 0 is source 1 index
2019 * ...stack 1 is source 2 index
2020 * ...stack 2 is mask index
2021 * ...stack 3 is count
2022 */
2023 s32 a, b;
2024 u8 *source1 = (u8 *)vars[args[0]];
2025 u8 *source2 = (u8 *)vars[args[1]];
2026 u8 *mask = (u8 *)vars[args[2]];
2027 u32 index1;
2028 u32 index2;
2029 u32 mask_index;
2030
2031 if (!altera_check_stack(stack_ptr, 4, &status))
2032 break;
2033
2034 index1 = stack[--stack_ptr];
2035 index2 = stack[--stack_ptr];
2036 mask_index = stack[--stack_ptr];
2037 long_count = stack[--stack_ptr];
2038
2039 if (version > 0) {
2040 /*
2041 * stack 0 = source 1 right index
2042 * stack 1 = source 1 left index
2043 * stack 2 = source 2 right index
2044 * stack 3 = source 2 left index
2045 * stack 4 = mask right index
2046 * stack 5 = mask left index
2047 */
2048 s32 mask_right = stack[--stack_ptr];
2049 s32 mask_left = stack[--stack_ptr];
2050 /* source 1 count */
2051 a = 1 + index2 - index1;
2052 /* source 2 count */
2053 b = 1 + long_count - mask_index;
2054 a = (a < b) ? a : b;
2055 /* mask count */
2056 b = 1 + mask_left - mask_right;
2057 a = (a < b) ? a : b;
2058 /* source 2 start index */
2059 index2 = mask_index;
2060 /* mask start index */
2061 mask_index = mask_right;
2062 long_count = a;
2063 }
2064
2065 long_tmp = 1L;
2066
2067 if (long_count < 1)
2068 status = -ERANGE;
2069 else {
2070 count = long_count;
2071
2072 for (i = 0; i < count; ++i) {
2073 if (mask[mask_index >> 3] &
2074 (1 << (mask_index & 7))) {
2075 a = source1[index1 >> 3] &
2076 (1 << (index1 & 7))
2077 ? 1 : 0;
2078 b = source2[index2 >> 3] &
2079 (1 << (index2 & 7))
2080 ? 1 : 0;
2081
2082 if (a != b) /* failure */
2083 long_tmp = 0L;
2084 }
2085 ++index1;
2086 ++index2;
2087 ++mask_index;
2088 }
2089 }
2090
2091 stack[stack_ptr++] = long_tmp;
2092
2093 break;
2094 }
2095 default:
2096 /* Unrecognized opcode -- ERROR! */
2097 bad_opcode = 1;
2098 break;
2099 }
2100
2101 if (bad_opcode)
2102 status = -ENOSYS;
2103
2104 if ((stack_ptr < 0) || (stack_ptr >= ALTERA_STACK_SIZE))
2105 status = -EOVERFLOW;
2106
2107 if (status != 0) {
2108 done = 1;
2109 *error_address = (s32)(opcode_address - code_sect);
2110 }
2111 }
2112
2113 altera_free_buffers(astate);
2114
2115 /* Free all dynamically allocated arrays */
2116 if ((attrs != NULL) && (vars != NULL))
2117 for (i = 0; i < sym_count; ++i)
2118 if (attrs[i] & 0x80)
2119 kfree((void *)vars[i]);
2120
2121 kfree(vars);
2122 kfree(var_size);
2123 kfree(attrs);
2124 kfree(proc_attributes);
2125
2126 return status;
2127 }
2128
2129 static int altera_get_note(u8 *p, s32 program_size,
2130 s32 *offset, char *key, char *value, int length)
2131 /*
2132 * Gets key and value of NOTE fields in the JBC file.
2133 * Can be called in two modes: if offset pointer is NULL,
2134 * then the function searches for note fields which match
2135 * the key string provided. If offset is not NULL, then
2136 * the function finds the next note field of any key,
2137 * starting at the offset specified by the offset pointer.
2138 * Returns 0 for success, else appropriate error code
2139 */
2140 {
2141 int status = -ENODATA;
2142 u32 note_strings = 0L;
2143 u32 note_table = 0L;
2144 u32 note_count = 0L;
2145 u32 first_word = 0L;
2146 int version = 0;
2147 int delta = 0;
2148 char *key_ptr;
2149 char *value_ptr;
2150 int i;
2151
2152 /* Read header information */
2153 if (program_size > 52L) {
2154 first_word = get_unaligned_be32(&p[0]);
2155 version = (first_word & 1L);
2156 delta = version * 8;
2157
2158 note_strings = get_unaligned_be32(&p[8 + delta]);
2159 note_table = get_unaligned_be32(&p[12 + delta]);
2160 note_count = get_unaligned_be32(&p[44 + (2 * delta)]);
2161 }
2162
2163 if ((first_word != 0x4A414D00L) && (first_word != 0x4A414D01L))
2164 return -EIO;
2165
2166 if (note_count <= 0L)
2167 return status;
2168
2169 if (offset == NULL) {
2170 /*
2171 * We will search for the first note with a specific key,
2172 * and return only the value
2173 */
2174 for (i = 0; (i < note_count) &&
2175 (status != 0); ++i) {
2176 key_ptr = &p[note_strings +
2177 get_unaligned_be32(
2178 &p[note_table + (8 * i)])];
2179 if ((strncasecmp(key, key_ptr, strlen(key_ptr)) == 0) &&
2180 (key != NULL)) {
2181 status = 0;
2182
2183 value_ptr = &p[note_strings +
2184 get_unaligned_be32(
2185 &p[note_table + (8 * i) + 4])];
2186
2187 if (value != NULL)
2188 strlcpy(value, value_ptr, length);
2189
2190 }
2191 }
2192 } else {
2193 /*
2194 * We will search for the next note, regardless of the key,
2195 * and return both the value and the key
2196 */
2197
2198 i = *offset;
2199
2200 if ((i >= 0) && (i < note_count)) {
2201 status = 0;
2202
2203 if (key != NULL)
2204 strlcpy(key, &p[note_strings +
2205 get_unaligned_be32(
2206 &p[note_table + (8 * i)])],
2207 length);
2208
2209 if (value != NULL)
2210 strlcpy(value, &p[note_strings +
2211 get_unaligned_be32(
2212 &p[note_table + (8 * i) + 4])],
2213 length);
2214
2215 *offset = i + 1;
2216 }
2217 }
2218
2219 return status;
2220 }
2221
2222 static int altera_check_crc(u8 *p, s32 program_size)
2223 {
2224 int status = 0;
2225 u16 local_expected = 0,
2226 local_actual = 0,
2227 shift_reg = 0xffff;
2228 int bit, feedback;
2229 u8 databyte;
2230 u32 i;
2231 u32 crc_section = 0L;
2232 u32 first_word = 0L;
2233 int version = 0;
2234 int delta = 0;
2235
2236 if (program_size > 52L) {
2237 first_word = get_unaligned_be32(&p[0]);
2238 version = (first_word & 1L);
2239 delta = version * 8;
2240
2241 crc_section = get_unaligned_be32(&p[32 + delta]);
2242 }
2243
2244 if ((first_word != 0x4A414D00L) && (first_word != 0x4A414D01L))
2245 status = -EIO;
2246
2247 if (crc_section >= program_size)
2248 status = -EIO;
2249
2250 if (status == 0) {
2251 local_expected = (u16)get_unaligned_be16(&p[crc_section]);
2252
2253 for (i = 0; i < crc_section; ++i) {
2254 databyte = p[i];
2255 for (bit = 0; bit < 8; bit++) {
2256 feedback = (databyte ^ shift_reg) & 0x01;
2257 shift_reg >>= 1;
2258 if (feedback)
2259 shift_reg ^= 0x8408;
2260
2261 databyte >>= 1;
2262 }
2263 }
2264
2265 local_actual = (u16)~shift_reg;
2266
2267 if (local_expected != local_actual)
2268 status = -EILSEQ;
2269
2270 }
2271
2272 if (debug || status) {
2273 switch (status) {
2274 case 0:
2275 printk(KERN_INFO "%s: CRC matched: %04x\n", __func__,
2276 local_actual);
2277 break;
2278 case -EILSEQ:
2279 printk(KERN_ERR "%s: CRC mismatch: expected %04x, "
2280 "actual %04x\n", __func__, local_expected,
2281 local_actual);
2282 break;
2283 case -ENODATA:
2284 printk(KERN_ERR "%s: expected CRC not found, "
2285 "actual CRC = %04x\n", __func__,
2286 local_actual);
2287 break;
2288 case -EIO:
2289 printk(KERN_ERR "%s: error: format isn't "
2290 "recognized.\n", __func__);
2291 break;
2292 default:
2293 printk(KERN_ERR "%s: CRC function returned error "
2294 "code %d\n", __func__, status);
2295 break;
2296 }
2297 }
2298
2299 return status;
2300 }
2301
2302 static int altera_get_file_info(u8 *p,
2303 s32 program_size,
2304 int *format_version,
2305 int *action_count,
2306 int *procedure_count)
2307 {
2308 int status = -EIO;
2309 u32 first_word = 0;
2310 int version = 0;
2311
2312 if (program_size <= 52L)
2313 return status;
2314
2315 first_word = get_unaligned_be32(&p[0]);
2316
2317 if ((first_word == 0x4A414D00L) || (first_word == 0x4A414D01L)) {
2318 status = 0;
2319
2320 version = (first_word & 1L);
2321 *format_version = version + 1;
2322
2323 if (version > 0) {
2324 *action_count = get_unaligned_be32(&p[48]);
2325 *procedure_count = get_unaligned_be32(&p[52]);
2326 }
2327 }
2328
2329 return status;
2330 }
2331
2332 static int altera_get_act_info(u8 *p,
2333 s32 program_size,
2334 int index,
2335 char **name,
2336 char **description,
2337 struct altera_procinfo **proc_list)
2338 {
2339 int status = -EIO;
2340 struct altera_procinfo *procptr = NULL;
2341 struct altera_procinfo *tmpptr = NULL;
2342 u32 first_word = 0L;
2343 u32 action_table = 0L;
2344 u32 proc_table = 0L;
2345 u32 str_table = 0L;
2346 u32 note_strings = 0L;
2347 u32 action_count = 0L;
2348 u32 proc_count = 0L;
2349 u32 act_name_id = 0L;
2350 u32 act_desc_id = 0L;
2351 u32 act_proc_id = 0L;
2352 u32 act_proc_name = 0L;
2353 u8 act_proc_attribute = 0;
2354
2355 if (program_size <= 52L)
2356 return status;
2357 /* Read header information */
2358 first_word = get_unaligned_be32(&p[0]);
2359
2360 if (first_word != 0x4A414D01L)
2361 return status;
2362
2363 action_table = get_unaligned_be32(&p[4]);
2364 proc_table = get_unaligned_be32(&p[8]);
2365 str_table = get_unaligned_be32(&p[12]);
2366 note_strings = get_unaligned_be32(&p[16]);
2367 action_count = get_unaligned_be32(&p[48]);
2368 proc_count = get_unaligned_be32(&p[52]);
2369
2370 if (index >= action_count)
2371 return status;
2372
2373 act_name_id = get_unaligned_be32(&p[action_table + (12 * index)]);
2374 act_desc_id = get_unaligned_be32(&p[action_table + (12 * index) + 4]);
2375 act_proc_id = get_unaligned_be32(&p[action_table + (12 * index) + 8]);
2376
2377 *name = &p[str_table + act_name_id];
2378
2379 if (act_desc_id < (note_strings - str_table))
2380 *description = &p[str_table + act_desc_id];
2381
2382 do {
2383 act_proc_name = get_unaligned_be32(
2384 &p[proc_table + (13 * act_proc_id)]);
2385 act_proc_attribute =
2386 (p[proc_table + (13 * act_proc_id) + 8] & 0x03);
2387
2388 procptr =
2389 kzalloc(sizeof(struct altera_procinfo),
2390 GFP_KERNEL);
2391
2392 if (procptr == NULL)
2393 status = -ENOMEM;
2394 else {
2395 procptr->name = &p[str_table + act_proc_name];
2396 procptr->attrs = act_proc_attribute;
2397 procptr->next = NULL;
2398
2399 /* add record to end of linked list */
2400 if (*proc_list == NULL)
2401 *proc_list = procptr;
2402 else {
2403 tmpptr = *proc_list;
2404 while (tmpptr->next != NULL)
2405 tmpptr = tmpptr->next;
2406 tmpptr->next = procptr;
2407 }
2408 }
2409
2410 act_proc_id = get_unaligned_be32(
2411 &p[proc_table + (13 * act_proc_id) + 4]);
2412 } while ((act_proc_id != 0) && (act_proc_id < proc_count));
2413
2414 return status;
2415 }
2416
2417 int altera_init(struct altera_config *config, const struct firmware *fw)
2418 {
2419 struct altera_state *astate = NULL;
2420 struct altera_procinfo *proc_list = NULL;
2421 struct altera_procinfo *procptr = NULL;
2422 char *key = NULL;
2423 char *value = NULL;
2424 char *action_name = NULL;
2425 char *description = NULL;
2426 int exec_result = 0;
2427 int exit_code = 0;
2428 int format_version = 0;
2429 int action_count = 0;
2430 int procedure_count = 0;
2431 int index = 0;
2432 s32 offset = 0L;
2433 s32 error_address = 0L;
2434 int retval = 0;
2435
2436 key = kzalloc(33, GFP_KERNEL);
2437 if (!key) {
2438 retval = -ENOMEM;
2439 goto out;
2440 }
2441 value = kzalloc(257, GFP_KERNEL);
2442 if (!value) {
2443 retval = -ENOMEM;
2444 goto free_key;
2445 }
2446 astate = kzalloc(sizeof(struct altera_state), GFP_KERNEL);
2447 if (!astate) {
2448 retval = -ENOMEM;
2449 goto free_value;
2450 }
2451
2452 astate->config = config;
2453 if (!astate->config->jtag_io) {
2454 dprintk(KERN_INFO "%s: using byteblaster!\n", __func__);
2455 astate->config->jtag_io = netup_jtag_io_lpt;
2456 }
2457
2458 altera_check_crc((u8 *)fw->data, fw->size);
2459
2460 if (debug) {
2461 altera_get_file_info((u8 *)fw->data, fw->size, &format_version,
2462 &action_count, &procedure_count);
2463 printk(KERN_INFO "%s: File format is %s ByteCode format\n",
2464 __func__, (format_version == 2) ? "Jam STAPL" :
2465 "pre-standardized Jam 1.1");
2466 while (altera_get_note((u8 *)fw->data, fw->size,
2467 &offset, key, value, 256) == 0)
2468 printk(KERN_INFO "%s: NOTE \"%s\" = \"%s\"\n",
2469 __func__, key, value);
2470 }
2471
2472 if (debug && (format_version == 2) && (action_count > 0)) {
2473 printk(KERN_INFO "%s: Actions available:\n", __func__);
2474 for (index = 0; index < action_count; ++index) {
2475 altera_get_act_info((u8 *)fw->data, fw->size,
2476 index, &action_name,
2477 &description,
2478 &proc_list);
2479
2480 if (description == NULL)
2481 printk(KERN_INFO "%s: %s\n",
2482 __func__,
2483 action_name);
2484 else
2485 printk(KERN_INFO "%s: %s \"%s\"\n",
2486 __func__,
2487 action_name,
2488 description);
2489
2490 procptr = proc_list;
2491 while (procptr != NULL) {
2492 if (procptr->attrs != 0)
2493 printk(KERN_INFO "%s: %s (%s)\n",
2494 __func__,
2495 procptr->name,
2496 (procptr->attrs == 1) ?
2497 "optional" : "recommended");
2498
2499 proc_list = procptr->next;
2500 kfree(procptr);
2501 procptr = proc_list;
2502 }
2503 }
2504
2505 printk(KERN_INFO "\n");
2506 }
2507
2508 exec_result = altera_execute(astate, (u8 *)fw->data, fw->size,
2509 &error_address, &exit_code, &format_version);
2510
2511 if (exit_code)
2512 exec_result = -EREMOTEIO;
2513
2514 if ((format_version == 2) && (exec_result == -EINVAL)) {
2515 if (astate->config->action == NULL)
2516 printk(KERN_ERR "%s: error: no action specified for "
2517 "Jam STAPL file.\nprogram terminated.\n",
2518 __func__);
2519 else
2520 printk(KERN_ERR "%s: error: action \"%s\""
2521 " is not supported "
2522 "for this Jam STAPL file.\n"
2523 "Program terminated.\n", __func__,
2524 astate->config->action);
2525
2526 } else if (exec_result)
2527 printk(KERN_ERR "%s: error %d\n", __func__, exec_result);
2528
2529 kfree(astate);
2530 free_value:
2531 kfree(value);
2532 free_key:
2533 kfree(key);
2534 out:
2535 return retval;
2536 }
2537 EXPORT_SYMBOL(altera_init);
Linux with added FPC-III support