aboutsummaryrefslogtreecommitdiff
path: root/usr.sbin/nandsim/nandsim_cfgparse.c
blob: 4a310fb58a0f91e4475275b5fe1c29428ac0b63f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (C) 2009-2012 Semihalf
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>

#include <dev/nand/nandsim.h>

#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sysexits.h>
#include <unistd.h>

#include "nandsim_cfgparse.h"

#define warn(fmt, args...) do { \
    printf("WARNING: " fmt "\n", ##args); } while (0)

#define error(fmt, args...) do { \
    printf("ERROR: " fmt "\n", ##args); } while (0)

#define MSG_MANDATORYKEYMISSING "mandatory key \"%s\" value belonging to " \
    "section \"%s\" is missing!\n"

#define DEBUG
#undef DEBUG

#ifdef DEBUG
#define debug(fmt, args...) do { \
    printf("NANDSIM_CONF:" fmt "\n", ##args); } while (0)
#else
#define debug(fmt, args...) do {} while(0)
#endif

#define STRBUFSIZ 2000

/* Macros extracts type and type size */
#define TYPE(x) ((x) & 0xf8)
#define SIZE(x) (((x) & 0x07))

/* Erase/Prog/Read time max and min values */
#define DELAYTIME_MIN	10000
#define DELAYTIME_MAX	10000000

/* Structure holding configuration for controller. */
static struct sim_ctrl ctrl_conf;
/* Structure holding configuration for chip. */
static struct sim_chip chip_conf;

static struct nandsim_key nandsim_ctrl_keys[] = {
	{"num_cs", 1, VALUE_UINT | SIZE_8, (void *)&ctrl_conf.num_cs, 0},
	{"ctrl_num", 1, VALUE_UINT | SIZE_8, (void *)&ctrl_conf.num, 0},

	{"ecc_layout", 1, VALUE_UINTARRAY | SIZE_16,
	    (void *)&ctrl_conf.ecc_layout, MAX_ECC_BYTES},

	{"filename", 0, VALUE_STRING,
	    (void *)&ctrl_conf.filename, FILENAME_SIZE},

	{"ecc", 0, VALUE_BOOL, (void *)&ctrl_conf.ecc, 0},
	{NULL, 0, 0, NULL, 0},
};

static struct nandsim_key nandsim_chip_keys[] = {
	{"chip_cs", 1, VALUE_UINT | SIZE_8, (void *)&chip_conf.num, 0},
	{"chip_ctrl", 1, VALUE_UINT | SIZE_8, (void *)&chip_conf.ctrl_num,
	    0},
	{"device_id", 1, VALUE_UINT | SIZE_8, (void *)&chip_conf.device_id,
	    0},
	{"manufacturer_id", 1, VALUE_UINT | SIZE_8,
	    (void *)&chip_conf.manufact_id, 0},
	{"model", 0, VALUE_STRING, (void *)&chip_conf.device_model,
	    DEV_MODEL_STR_SIZE},
	{"manufacturer", 0, VALUE_STRING, (void *)&chip_conf.manufacturer,
	    MAN_STR_SIZE},
	{"page_size", 1, VALUE_UINT | SIZE_32, (void *)&chip_conf.page_size,
	    0},
	{"oob_size", 1, VALUE_UINT | SIZE_32, (void *)&chip_conf.oob_size,
	    0},
	{"pages_per_block", 1, VALUE_UINT | SIZE_32,
	    (void *)&chip_conf.pgs_per_blk, 0},
	{"blocks_per_lun", 1, VALUE_UINT | SIZE_32,
	    (void *)&chip_conf.blks_per_lun, 0},
	{"luns", 1, VALUE_UINT | SIZE_32, (void *)&chip_conf.luns, 0},
	{"column_addr_cycle", 1,VALUE_UINT | SIZE_8,
	    (void *)&chip_conf.col_addr_cycles, 0},
	{"row_addr_cycle", 1, VALUE_UINT | SIZE_8,
	    (void *)&chip_conf.row_addr_cycles, 0},
	{"program_time", 0, VALUE_UINT | SIZE_32,
	    (void *)&chip_conf.prog_time, 0},
	{"erase_time", 0, VALUE_UINT | SIZE_32,
	    (void *)&chip_conf.erase_time, 0},
	{"read_time", 0, VALUE_UINT | SIZE_32,
	    (void *)&chip_conf.read_time, 0},
	{"width", 1, VALUE_UINT | SIZE_8, (void *)&chip_conf.width, 0},
	{"wear_out", 1, VALUE_UINT | SIZE_32, (void *)&chip_conf.wear_level,
	    0},
	{"bad_block_map", 0, VALUE_UINTARRAY | SIZE_32,
	    (void *)&chip_conf.bad_block_map, MAX_BAD_BLOCKS},
	{NULL, 0, 0, NULL, 0},
};

static struct nandsim_section sections[] = {
	{"ctrl", (struct nandsim_key *)&nandsim_ctrl_keys},
	{"chip", (struct nandsim_key *)&nandsim_chip_keys},
	{NULL, NULL},
};

static uint8_t logoutputtoint(char *, int *);
static uint8_t validate_chips(struct sim_chip *, int, struct sim_ctrl *, int);
static uint8_t validate_ctrls(struct sim_ctrl *, int);
static int configure_sim(const char *, struct rcfile *);
static int create_ctrls(struct rcfile *, struct sim_ctrl **, int *);
static int create_chips(struct rcfile *, struct sim_chip **, int *);
static void destroy_ctrls(struct sim_ctrl *);
static void destroy_chips(struct sim_chip *);
static int validate_section_config(struct rcfile *, const char *, int);

int
convert_argint(char *arg, int *value)
{

	if (arg == NULL || value == NULL)
		return (EINVAL);

	errno = 0;
	*value = (int)strtol(arg, NULL, 0);
	if (*value == 0 && errno != 0) {
		error("Cannot convert to number argument \'%s\'", arg);
		return (EINVAL);
	}
	return (0);
}

int
convert_arguint(char *arg, unsigned int *value)
{

	if (arg == NULL || value == NULL)
		return (EINVAL);

	errno = 0;
	*value = (unsigned int)strtol(arg, NULL, 0);
	if (*value == 0 && errno != 0) {
		error("Cannot convert to number argument \'%s\'", arg);
		return (EINVAL);
	}
	return (0);
}

/* Parse given ',' separated list of bytes into buffer. */
int
parse_intarray(char *array, int **buffer)
{
	char *tmp, *tmpstr, *origstr;
	unsigned int currbufp = 0, i;
	unsigned int count = 0, from  = 0, to = 0;

	/* Remove square braces */
	if (array[0] == '[')
		array ++;
	if (array[strlen(array)-1] == ']')
		array[strlen(array)-1] = ',';

	from = strlen(array);
	origstr = (char *)malloc(sizeof(char) * from);
	strcpy(origstr, array);

	tmpstr = (char *)strtok(array, ",");
	/* First loop checks for how big int array we need to allocate */
	while (tmpstr != NULL) {
		errno = 0;
		if ((tmp = strchr(tmpstr, '-')) != NULL) {
			*tmp = ' ';
			if (convert_arguint(tmpstr, &from) ||
			    convert_arguint(tmp, &to)) {
				free(origstr);
				return (EINVAL);
			}

			count += to - from + 1;
		} else {
			if (convert_arguint(tmpstr, &from)) {
				free(origstr);
				return (EINVAL);
			}
			count++;
		}
		tmpstr = (char *)strtok(NULL, ",");
	}

	if (count == 0)
		goto out;

	/* Allocate buffer of ints */
	tmpstr = (char *)strtok(origstr, ",");
	*buffer = malloc(count * sizeof(int));

	/* Second loop is just inserting converted values into int array */
	while (tmpstr != NULL) {
		errno = 0;
		if ((tmp = strchr(tmpstr, '-')) != NULL) {
			*tmp = ' ';
			from = strtol(tmpstr, NULL, 0);
			to = strtol(tmp, NULL, 0);
			tmpstr = strtok(NULL, ",");
			for (i = from; i <= to; i ++)
				(*buffer)[currbufp++] = i;
			continue;
		}
		errno = 0;
		from = (int)strtol(tmpstr, NULL, 0);
		(*buffer)[currbufp++] = from;
		tmpstr = (char *)strtok(NULL, ",");
	}
out:
	free(origstr);
	return (count);
}

/* Convert logoutput strings literals into appropriate ints. */
static uint8_t
logoutputtoint(char *logoutput, int *output)
{
	int out;

	if (strcmp(logoutput, "file") == 0)
		out = NANDSIM_OUTPUT_FILE;

	else if (strcmp(logoutput, "console") == 0)
		out = NANDSIM_OUTPUT_CONSOLE;

	else if (strcmp(logoutput, "ram") == 0)
		out = NANDSIM_OUTPUT_RAM;

	else if (strcmp(logoutput, "none") == 0)
		out = NANDSIM_OUTPUT_NONE;
	else
		out = -1;

	*output = out;

	if (out == -1)
		return (EINVAL);
	else
		return (0);
}

static int
configure_sim(const char *devfname, struct rcfile *f)
{
	struct sim_param sim_conf;
	char buf[255];
	int err, tmpv, fd;

	err = rc_getint(f, "sim", 0, "log_level", &tmpv);

	if (tmpv < 0 || tmpv > 255 || err) {
		error("Bad log level specified (%d)\n", tmpv);
		return (ENOTSUP);
	} else
		sim_conf.log_level = tmpv;

	rc_getstring(f, "sim", 0, "log_output", 255, (char *)&buf);

	tmpv = -1;
	err = logoutputtoint((char *)&buf, &tmpv);
	if (err) {
		error("Log output specified in config file does not seem to "
		    "be valid (%s)!", (char *)&buf);
		return (ENOTSUP);
	}

	sim_conf.log_output = tmpv;

	fd = open(devfname, O_RDWR);
	if (fd == -1) {
		error("could not open simulator device file (%s)!",
		    devfname);
		return (EX_OSFILE);
	}

	err = ioctl(fd, NANDSIM_SIM_PARAM, &sim_conf);
	if (err) {
		error("simulator parameters could not be modified: %s",
		    strerror(errno));
		close(fd);
		return (ENXIO);
	}

	close(fd);
	return (EX_OK);
}

static int
create_ctrls(struct rcfile *f, struct sim_ctrl **ctrls, int *cnt)
{
	int count, i;
	struct sim_ctrl *ctrlsptr;

	count = rc_getsectionscount(f, "ctrl");
	if (count > MAX_SIM_DEV) {
		error("Too many CTRL sections specified(%d)", count);
		return (ENOTSUP);
	} else if (count == 0) {
		error("No ctrl sections specified");
		return (ENOENT);
	}

	ctrlsptr = (struct sim_ctrl *)malloc(sizeof(struct sim_ctrl) * count);
	if (ctrlsptr == NULL) {
		error("Could not allocate memory for ctrl configuration");
		return (ENOMEM);
	}

	for (i = 0; i < count; i++) {
		bzero((void *)&ctrl_conf, sizeof(ctrl_conf));

		/*
		 * ECC layout have to end up with 0xffff, so
		 * we're filling buffer with 0xff. If ecc_layout is
		 * defined in config file, values will be overridden.
		 */
		memset((void *)&ctrl_conf.ecc_layout, 0xff,
		    sizeof(ctrl_conf.ecc_layout));

		if (validate_section_config(f, "ctrl", i) != 0) {
			free(ctrlsptr);
			return (EINVAL);
		}

		if (parse_section(f, "ctrl", i) != 0) {
			free(ctrlsptr);
			return (EINVAL);
		}

		memcpy(&ctrlsptr[i], &ctrl_conf, sizeof(ctrl_conf));
		/* Try to create ctrl with config parsed */
		debug("NUM=%d\nNUM_CS=%d\nECC=%d\nFILENAME=%s\nECC_LAYOUT[0]"
		    "=%d\nECC_LAYOUT[1]=%d\n\n",
		    ctrlsptr[i].num, ctrlsptr[i].num_cs, ctrlsptr[i].ecc,
		    ctrlsptr[i].filename, ctrlsptr[i].ecc_layout[0],
		    ctrlsptr[i].ecc_layout[1]);
	}
	*cnt = count;
	*ctrls = ctrlsptr;
	return (0);
}

static void
destroy_ctrls(struct sim_ctrl *ctrls)
{

	free(ctrls);
}

static int
create_chips(struct rcfile *f, struct sim_chip **chips, int *cnt)
{
	struct sim_chip *chipsptr;
	int count, i;

	count = rc_getsectionscount(f, "chip");
	if (count > (MAX_CTRL_CS * MAX_SIM_DEV)) {
		error("Too many chip sections specified(%d)", count);
		return (ENOTSUP);
	} else if (count == 0) {
		error("No chip sections specified");
		return (ENOENT);
	}

	chipsptr = (struct sim_chip *)malloc(sizeof(struct sim_chip) * count);
	if (chipsptr == NULL) {
		error("Could not allocate memory for chip configuration");
		return (ENOMEM);
	}

	for (i = 0; i < count; i++) {
		bzero((void *)&chip_conf, sizeof(chip_conf));

		/*
		 * Bad block map have to end up with 0xffff, so
		 * we're filling array with 0xff. If bad block map is
		 * defined in config file, values will be overridden.
		 */
		memset((void *)&chip_conf.bad_block_map, 0xff,
		    sizeof(chip_conf.bad_block_map));

		if (validate_section_config(f, "chip", i) != 0) {
			free(chipsptr);
			return (EINVAL);
		}

		if (parse_section(f, "chip", i) != 0) {
			free(chipsptr);
			return (EINVAL);
		}

		memcpy(&chipsptr[i], &chip_conf, sizeof(chip_conf));

		/* Try to create chip with config parsed */
		debug("CHIP:\nNUM=%d\nCTRL_NUM=%d\nDEVID=%d\nMANID=%d\n"
		    "PAGE_SZ=%d\nOOBSZ=%d\nREAD_T=%d\nDEVMODEL=%s\n"
		    "MAN=%s\nCOLADDRCYCLES=%d\nROWADDRCYCLES=%d\nCHWIDTH=%d\n"
		    "PGS/BLK=%d\nBLK/LUN=%d\nLUNS=%d\nERR_RATIO=%d\n"
		    "WEARLEVEL=%d\nISWP=%d\n\n\n\n",
		    chipsptr[i].num, chipsptr[i].ctrl_num,
		    chipsptr[i].device_id, chipsptr[i].manufact_id,
		    chipsptr[i].page_size, chipsptr[i].oob_size,
		    chipsptr[i].read_time, chipsptr[i].device_model,
		    chipsptr[i].manufacturer, chipsptr[i].col_addr_cycles,
		    chipsptr[i].row_addr_cycles, chipsptr[i].width,
		    chipsptr[i].pgs_per_blk, chipsptr[i].blks_per_lun,
		    chipsptr[i].luns, chipsptr[i].error_ratio,
		    chipsptr[i].wear_level, chipsptr[i].is_wp);
	}
	*cnt = count;
	*chips = chipsptr;
	return (0);
}

static void
destroy_chips(struct sim_chip *chips)
{

	free(chips);
}

int
parse_config(char *cfgfname, const char *devfname)
{
	int err = 0, fd;
	unsigned int chipsectionscnt, ctrlsectionscnt, i;
	struct rcfile *f;
	struct sim_chip *chips;
	struct sim_ctrl *ctrls;

	err = rc_open(cfgfname, "r", &f);
	if (err) {
		error("could not open configuration file (%s)", cfgfname);
		return (EX_NOINPUT);
	}

	/* First, try to configure simulator itself. */
	if (configure_sim(devfname, f) != EX_OK) {
		rc_close(f);
		return (EINVAL);
	}

	debug("SIM CONFIGURED!\n");
	/* Then create controllers' configs */
	if (create_ctrls(f, &ctrls, &ctrlsectionscnt) != 0) {
		rc_close(f);
		return (ENXIO);
	}
	debug("CTRLS CONFIG READ!\n");

	/* Then create chips' configs */
	if (create_chips(f, &chips, &chipsectionscnt) != 0) {
		destroy_ctrls(ctrls);
		rc_close(f);
		return (ENXIO);
	}
	debug("CHIPS CONFIG READ!\n");

	if (validate_ctrls(ctrls, ctrlsectionscnt) != 0) {
		destroy_ctrls(ctrls);
		destroy_chips(chips);
		rc_close(f);
		return (EX_SOFTWARE);
	}
	if (validate_chips(chips, chipsectionscnt, ctrls,
	    ctrlsectionscnt) != 0) {
		destroy_ctrls(ctrls);
		destroy_chips(chips);
		rc_close(f);
		return (EX_SOFTWARE);
	}

	/* Open device */
	fd = open(devfname, O_RDWR);
	if (fd == -1) {
		error("could not open simulator device file (%s)!",
		    devfname);
		rc_close(f);
		destroy_chips(chips);
		destroy_ctrls(ctrls);
		return (EX_OSFILE);
	}

	debug("SIM CONFIG STARTED!\n");

	/* At this stage, both ctrls' and chips' configs should be valid */
	for (i = 0; i < ctrlsectionscnt; i++) {
		err = ioctl(fd, NANDSIM_CREATE_CTRL, &ctrls[i]);
		if (err) {
			if (err == EEXIST)
				error("Controller#%d already created\n",
				    ctrls[i].num);
			else if (err == EINVAL)
				error("Incorrect controller number (%d)\n",
				    ctrls[i].num);
			else
				error("Could not created controller#%d\n",
				    ctrls[i].num);
			/* Errors during controller creation stops parsing */
			close(fd);
			rc_close(f);
			destroy_ctrls(ctrls);
			destroy_chips(chips);
			return (ENXIO);
		}
		debug("CTRL#%d CONFIG STARTED!\n", i);
	}

	for (i = 0; i < chipsectionscnt; i++) {
		err = ioctl(fd, NANDSIM_CREATE_CHIP, &chips[i]);
		if (err) {
			if (err == EEXIST)
				error("Chip#%d for controller#%d already "
				    "created\n", chips[i].num,
				    chips[i].ctrl_num);
			else if (err == EINVAL)
				error("Incorrect chip number (%d:%d)\n",
				    chips[i].num, chips[i].ctrl_num);
			else
				error("Could not create chip (%d:%d)\n",
				    chips[i].num, chips[i].ctrl_num);
			error("Could not start chip#%d\n", i);
			destroy_chips(chips);
			destroy_ctrls(ctrls);
			close(fd);
			rc_close(f);
			return (ENXIO);
		}
	}
	debug("CHIPS CONFIG STARTED!\n");

	close(fd);
	rc_close(f);
	destroy_chips(chips);
	destroy_ctrls(ctrls);
	return (0);
}

/*
 * Function tries to get appropriate value for given key, convert it to
 * array of ints (of given size), and perform all the necessary checks and
 * conversions.
 */
static int
get_argument_intarray(const char *sect_name, int sectno,
    struct nandsim_key *key, struct rcfile *f)
{
	char strbuf[STRBUFSIZ];
	int *intbuf;
	int getres;
	uint32_t cnt, i = 0;

	getres = rc_getstring(f, sect_name, sectno, key->keyname, STRBUFSIZ,
	    (char *)&strbuf);

	if (getres != 0) {
		if (key->mandatory != 0) {
			error(MSG_MANDATORYKEYMISSING, key->keyname,
			    sect_name);
			return (EINVAL);
		} else
			/* Non-mandatory key, not present -- skip */
			return (0);
	}
	cnt = parse_intarray((char *)&strbuf, &intbuf);
	cnt = (cnt <= key->maxlength) ? cnt : key->maxlength;

	for (i = 0; i < cnt; i++) {
		if (SIZE(key->valuetype) == SIZE_8)
			*((uint8_t *)(key->field) + i) =
			    (uint8_t)intbuf[i];
		else if (SIZE(key->valuetype) == SIZE_16)
			*((uint16_t *)(key->field) + i) =
			    (uint16_t)intbuf[i];
		else
			*((uint32_t *)(key->field) + i) =
			    (uint32_t)intbuf[i];
	}
	free(intbuf);
	return (0);
}

/*
 *  Function tries to get appropriate value for given key, convert it to
 *  int of certain length.
 */
static int
get_argument_int(const char *sect_name, int sectno, struct nandsim_key *key,
    struct rcfile *f)
{
	int getres;
	uint32_t val;

	getres = rc_getint(f, sect_name, sectno, key->keyname, &val);
	if (getres != 0) {

		if (key->mandatory != 0) {
			error(MSG_MANDATORYKEYMISSING, key->keyname,
			    sect_name);

			return (EINVAL);
		} else
			/* Non-mandatory key, not present -- skip */
			return (0);
	}
	if (SIZE(key->valuetype) == SIZE_8)
		*(uint8_t *)(key->field) = (uint8_t)val;
	else if (SIZE(key->valuetype) == SIZE_16)
		*(uint16_t *)(key->field) = (uint16_t)val;
	else
		*(uint32_t *)(key->field) = (uint32_t)val;
	return (0);
}

/* Function tries to get string value for given key */
static int
get_argument_string(const char *sect_name, int sectno,
    struct nandsim_key *key, struct rcfile *f)
{
	char strbuf[STRBUFSIZ];
	int getres;

	getres = rc_getstring(f, sect_name, sectno, key->keyname, STRBUFSIZ,
	    strbuf);

	if (getres != 0) {
		if (key->mandatory != 0) {
			error(MSG_MANDATORYKEYMISSING, key->keyname,
			    sect_name);
			return (1);
		} else
			/* Non-mandatory key, not present -- skip */
			return (0);
	}
	strncpy(key->field, (char *)&strbuf, (size_t)(key->maxlength - 1));
	return (0);
}

/* Function tries to get on/off value for given key */
static int
get_argument_bool(const char *sect_name, int sectno, struct nandsim_key *key,
    struct rcfile *f)
{
	int getres, val;

	getres = rc_getbool(f, sect_name, sectno, key->keyname, &val);
	if (getres != 0) {
		if (key->mandatory != 0) {
			error(MSG_MANDATORYKEYMISSING, key->keyname,
			    sect_name);
			return (1);
		} else
			/* Non-mandatory key, not present -- skip */
			return (0);
	}
	*(uint8_t *)key->field = (uint8_t)val;
	return (0);
}

int
parse_section(struct rcfile *f, const char *sect_name, int sectno)
{
	struct nandsim_key *key;
	struct nandsim_section *sect = (struct nandsim_section *)&sections;
	int getres = 0;

	while (1) {
		if (sect == NULL)
			return (EINVAL);

		if (strcmp(sect->name, sect_name) == 0)
			break;
		else
			sect++;
	}
	key = sect->keys;
	do {
		debug("->Section: %s, Key: %s, type: %d, size: %d",
		    sect_name, key->keyname, TYPE(key->valuetype),
		    SIZE(key->valuetype)/2);

		switch (TYPE(key->valuetype)) {
		case VALUE_UINT:
			/* Single int value */
			getres = get_argument_int(sect_name, sectno, key, f);

			if (getres != 0)
				return (getres);

			break;
		case VALUE_UINTARRAY:
			/* Array of ints */
			getres = get_argument_intarray(sect_name,
			    sectno, key, f);

			if (getres != 0)
				return (getres);

			break;
		case VALUE_STRING:
			/* Array of chars */
			getres = get_argument_string(sect_name, sectno, key,
			    f);

			if (getres != 0)
				return (getres);

			break;
		case VALUE_BOOL:
			/* Boolean value (true/false/on/off/yes/no) */
			getres = get_argument_bool(sect_name, sectno, key,
			    f);

			if (getres != 0)
				return (getres);

			break;
		}
	} while ((++key)->keyname != NULL);

	return (0);
}

static uint8_t
validate_chips(struct sim_chip *chips, int chipcnt,
    struct sim_ctrl *ctrls, int ctrlcnt)
{
	int cchipcnt, i, width, j, id, max;

	cchipcnt = chipcnt;
	for (chipcnt -= 1; chipcnt >= 0; chipcnt--) {
		if (chips[chipcnt].num >= MAX_CTRL_CS) {
			error("chip no. too high (%d)!!\n",
			    chips[chipcnt].num);
			return (EINVAL);
		}

		if (chips[chipcnt].ctrl_num >= MAX_SIM_DEV) {
			error("controller no. too high (%d)!!\n",
			    chips[chipcnt].ctrl_num);
			return (EINVAL);
		}

		if (chips[chipcnt].width != 8 &&
		    chips[chipcnt].width != 16) {
			error("invalid width:%d for chip#%d",
			    chips[chipcnt].width, chips[chipcnt].num);
			return (EINVAL);
		}

		/* Check if page size is > 512 and if its power of 2 */
		if (chips[chipcnt].page_size < 512 ||
		    (chips[chipcnt].page_size &
		    (chips[chipcnt].page_size - 1)) != 0) {
			error("invalid page size:%d for chip#%d at ctrl#%d!!"
			    "\n", chips[chipcnt].page_size,
			    chips[chipcnt].num,
			    chips[chipcnt].ctrl_num);
			return (EINVAL);
		}

		/* Check if controller no. ctrl_num is configured */
		for (i = 0, id = -1; i < ctrlcnt && id == -1; i++)
			if (ctrls[i].num == chips[chipcnt].ctrl_num)
				id = i;

		if (i == ctrlcnt && id == -1) {
			error("Missing configuration for controller %d"
			    " (at least one chip is connected to it)",
			    chips[chipcnt].ctrl_num);
			return (EINVAL);
		} else {
			/*
			 * Controller is configured -> check oob_size
			 * validity
			 */
			i = 0;
			max = ctrls[id].ecc_layout[0];
			while (i < MAX_ECC_BYTES &&
			    ctrls[id].ecc_layout[i] != 0xffff) {

				if (ctrls[id].ecc_layout[i] > max)
					max = ctrls[id].ecc_layout[i];
				i++;
			}

			if (chips[chipcnt].oob_size < (unsigned)i) {
				error("OOB size for chip#%d at ctrl#%d is "
				    "smaller than ecc layout length!",
				    chips[chipcnt].num,
				    chips[chipcnt].ctrl_num);
				exit(EINVAL);
			}

			if (chips[chipcnt].oob_size < (unsigned)max) {
				error("OOB size for chip#%d at ctrl#%d is "
				    "smaller than maximal ecc position in "
				    "defined layout!", chips[chipcnt].num,
				    chips[chipcnt].ctrl_num);
				exit(EINVAL);
			}


		}

		if ((chips[chipcnt].erase_time < DELAYTIME_MIN ||
		    chips[chipcnt].erase_time > DELAYTIME_MAX) &&
		    chips[chipcnt].erase_time != 0) {
			error("Invalid erase time value for chip#%d at "
			    "ctrl#%d",
			    chips[chipcnt].num,
			    chips[chipcnt].ctrl_num);
			return (EINVAL);
		}

		if ((chips[chipcnt].prog_time < DELAYTIME_MIN ||
		    chips[chipcnt].prog_time > DELAYTIME_MAX) &&
		    chips[chipcnt].prog_time != 0) {
			error("Invalid prog time value for chip#%d at "
			    "ctr#%d!",
			    chips[chipcnt].num,
			    chips[chipcnt].ctrl_num);
			return (EINVAL);
		}

		if ((chips[chipcnt].read_time < DELAYTIME_MIN ||
		    chips[chipcnt].read_time > DELAYTIME_MAX) &&
		    chips[chipcnt].read_time != 0) {
			error("Invalid read time value for chip#%d at "
			    "ctrl#%d!",
			    chips[chipcnt].num,
			    chips[chipcnt].ctrl_num);
			return (EINVAL);
		}
	}
	/* Check if chips attached to the same controller, have same width */
	for (i = 0; i < ctrlcnt; i++) {
		width = -1;
		for (j = 0; j < cchipcnt; j++) {
			if (chips[j].ctrl_num == i) {
				if (width == -1) {
					width = chips[j].width;
				} else {
					if (width != chips[j].width) {
						error("Chips attached to "
						    "ctrl#%d have different "
						    "widths!\n", i);
						return (EINVAL);
					}
				}
			}
		}
	}

	return (0);
}

static uint8_t
validate_ctrls(struct sim_ctrl *ctrl, int ctrlcnt)
{
	for (ctrlcnt -= 1; ctrlcnt >= 0; ctrlcnt--) {
		if (ctrl[ctrlcnt].num > MAX_SIM_DEV) {
			error("Controller no. too high (%d)!!\n",
			    ctrl[ctrlcnt].num);
			return (EINVAL);
		}
		if (ctrl[ctrlcnt].num_cs > MAX_CTRL_CS) {
			error("Too many CS (%d)!!\n", ctrl[ctrlcnt].num_cs);
			return (EINVAL);
		}
		if (ctrl[ctrlcnt].ecc != 0 && ctrl[ctrlcnt].ecc != 1) {
			error("ECC is set to neither 0 nor 1 !\n");
			return (EINVAL);
		}
	}

	return (0);
}

static int validate_section_config(struct rcfile *f, const char *sect_name,
    int sectno)
{
	struct nandsim_key *key;
	struct nandsim_section *sect;
	char **keys_tbl;
	int i, match;

	for (match = 0, sect = (struct nandsim_section *)&sections;
	    sect != NULL; sect++) {
		if (strcmp(sect->name, sect_name) == 0) {
			match = 1;
			break;
		}
	}

	if (match == 0)
		return (EINVAL);

	keys_tbl = rc_getkeys(f, sect_name, sectno);
	if (keys_tbl == NULL)
		return (ENOMEM);

	for (i = 0; keys_tbl[i] != NULL; i++) {
		key = sect->keys;
		match = 0;
		do {
			if (strcmp(keys_tbl[i], key->keyname) == 0) {
				match = 1;
				break;
			}
		} while ((++key)->keyname != NULL);

		if (match == 0) {
			error("Invalid key in config file: %s\n", keys_tbl[i]);
			free(keys_tbl);
			return (EINVAL);
		}
	}

	free(keys_tbl);
	return (0);
}