summaryrefslogtreecommitdiffstats
path: root/drivers/ieee1394/csr1212.h
blob: 17ddd72dee4e60c8f3ac4e99ff4a57be2f8d7531 (plain)
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
/*
 * csr1212.h -- IEEE 1212 Control and Status Register support for Linux
 *
 * Copyright (C) 2003 Francois Retief <fgretief@sun.ac.za>
 *                    Steve Kinneberg <kinnebergsteve@acmsystems.com>
 *
 * 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.
 *    3. The name of the author may not be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
 */

#ifndef __CSR1212_H__
#define __CSR1212_H__


/* Compatibility layer */
#ifdef __KERNEL__

#include <linux/types.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/vmalloc.h>
#include <asm/pgalloc.h>

#define CSR1212_MALLOC(size)		vmalloc((size))
#define CSR1212_FREE(ptr)		vfree(ptr)
#define CSR1212_BE16_TO_CPU(quad)	be16_to_cpu(quad)
#define CSR1212_CPU_TO_BE16(quad)	cpu_to_be16(quad)
#define CSR1212_BE32_TO_CPU(quad)	be32_to_cpu(quad)
#define CSR1212_CPU_TO_BE32(quad)	cpu_to_be32(quad)
#define CSR1212_BE64_TO_CPU(quad)	be64_to_cpu(quad)
#define CSR1212_CPU_TO_BE64(quad)	cpu_to_be64(quad)

#define CSR1212_LE16_TO_CPU(quad)	le16_to_cpu(quad)
#define CSR1212_CPU_TO_LE16(quad)	cpu_to_le16(quad)
#define CSR1212_LE32_TO_CPU(quad)	le32_to_cpu(quad)
#define CSR1212_CPU_TO_LE32(quad)	cpu_to_le32(quad)
#define CSR1212_LE64_TO_CPU(quad)	le64_to_cpu(quad)
#define CSR1212_CPU_TO_LE64(quad)	cpu_to_le64(quad)

#include <linux/errno.h>
#define CSR1212_SUCCESS (0)
#define CSR1212_EINVAL	(-EINVAL)
#define CSR1212_ENOMEM	(-ENOMEM)
#define CSR1212_ENOENT	(-ENOENT)
#define CSR1212_EIO	(-EIO)
#define CSR1212_EBUSY	(-EBUSY)

#else	/* Userspace */

#include <sys/types.h>
#include <malloc.h>
#define CSR1212_MALLOC(size)		malloc(size)
#define CSR1212_FREE(ptr)		free(ptr)
#include <endian.h>
#if __BYTE_ORDER == __LITTLE_ENDIAN
#include <byteswap.h>
#define CSR1212_BE16_TO_CPU(quad)	bswap_16(quad)
#define CSR1212_CPU_TO_BE16(quad)	bswap_16(quad)
#define CSR1212_BE32_TO_CPU(quad)	bswap_32(quad)
#define CSR1212_CPU_TO_BE32(quad)	bswap_32(quad)
#define CSR1212_BE64_TO_CPU(quad)	bswap_64(quad)
#define CSR1212_CPU_TO_BE64(quad)	bswap_64(quad)

#define CSR1212_LE16_TO_CPU(quad)	(quad)
#define CSR1212_CPU_TO_LE16(quad)	(quad)
#define CSR1212_LE32_TO_CPU(quad)	(quad)
#define CSR1212_CPU_TO_LE32(quad)	(quad)
#define CSR1212_LE64_TO_CPU(quad)	(quad)
#define CSR1212_CPU_TO_LE64(quad)	(quad)
#else
#define CSR1212_BE16_TO_CPU(quad)	(quad)
#define CSR1212_CPU_TO_BE16(quad)	(quad)
#define CSR1212_BE32_TO_CPU(quad)	(quad)
#define CSR1212_CPU_TO_BE32(quad)	(quad)
#define CSR1212_BE64_TO_CPU(quad)	(quad)
#define CSR1212_CPU_TO_BE64(quad)	(quad)

#define CSR1212_LE16_TO_CPU(quad)	bswap_16(quad)
#define CSR1212_CPU_TO_LE16(quad)	bswap_16(quad)
#define CSR1212_LE32_TO_CPU(quad)	bswap_32(quad)
#define CSR1212_CPU_TO_LE32(quad)	bswap_32(quad)
#define CSR1212_LE64_TO_CPU(quad)	bswap_64(quad)
#define CSR1212_CPU_TO_LE64(quad)	bswap_64(quad)
#endif

#include <errno.h>
#define CSR1212_SUCCESS (0)
#define CSR1212_EINVAL	(EINVAL)
#define CSR1212_ENOMEM	(ENOMEM)
#define CSR1212_ENOENT	(ENOENT)
#define CSR1212_EIO	(EIO)
#define CSR1212_EBUSY	(EBUSY)

#endif


#define CSR1212_KV_VAL_MASK			0xffffff
#define CSR1212_KV_KEY_SHIFT			24
#define CSR1212_KV_KEY_TYPE_SHIFT		6
#define CSR1212_KV_KEY_ID_MASK			0x3f
#define CSR1212_KV_KEY_TYPE_MASK		0x3		/* After shift */


/* CSR 1212 key types */
#define CSR1212_KV_TYPE_IMMEDIATE		0
#define CSR1212_KV_TYPE_CSR_OFFSET		1
#define CSR1212_KV_TYPE_LEAF			2
#define CSR1212_KV_TYPE_DIRECTORY		3


/* CSR 1212 key ids */
#define CSR1212_KV_ID_DESCRIPTOR		0x01
#define CSR1212_KV_ID_BUS_DEPENDENT_INFO	0x02
#define CSR1212_KV_ID_VENDOR			0x03
#define CSR1212_KV_ID_HARDWARE_VERSION		0x04
#define CSR1212_KV_ID_MODULE			0x07
#define CSR1212_KV_ID_NODE_CAPABILITIES		0x0C
#define CSR1212_KV_ID_EUI_64			0x0D
#define CSR1212_KV_ID_UNIT			0x11
#define CSR1212_KV_ID_SPECIFIER_ID		0x12
#define CSR1212_KV_ID_VERSION			0x13
#define CSR1212_KV_ID_DEPENDENT_INFO		0x14
#define CSR1212_KV_ID_UNIT_LOCATION		0x15
#define CSR1212_KV_ID_MODEL			0x17
#define CSR1212_KV_ID_INSTANCE			0x18
#define CSR1212_KV_ID_KEYWORD			0x19
#define CSR1212_KV_ID_FEATURE			0x1A
#define CSR1212_KV_ID_EXTENDED_ROM		0x1B
#define CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID	0x1C
#define CSR1212_KV_ID_EXTENDED_KEY		0x1D
#define CSR1212_KV_ID_EXTENDED_DATA		0x1E
#define CSR1212_KV_ID_MODIFIABLE_DESCRIPTOR	0x1F
#define CSR1212_KV_ID_DIRECTORY_ID		0x20
#define CSR1212_KV_ID_REVISION			0x21


/* IEEE 1212 Address space map */
#define CSR1212_ALL_SPACE_BASE			(0x000000000000ULL)
#define CSR1212_ALL_SPACE_SIZE			(1ULL << 48)
#define CSR1212_ALL_SPACE_END			(CSR1212_ALL_SPACE_BASE + CSR1212_ALL_SPACE_SIZE)

#define  CSR1212_MEMORY_SPACE_BASE		(0x000000000000ULL)
#define  CSR1212_MEMORY_SPACE_SIZE		((256ULL * (1ULL << 40)) - (512ULL * (1ULL << 20)))
#define  CSR1212_MEMORY_SPACE_END		(CSR1212_MEMORY_SPACE_BASE + CSR1212_MEMORY_SPACE_SIZE)

#define  CSR1212_PRIVATE_SPACE_BASE		(0xffffe0000000ULL)
#define  CSR1212_PRIVATE_SPACE_SIZE		(256ULL * (1ULL << 20))
#define  CSR1212_PRIVATE_SPACE_END		(CSR1212_PRIVATE_SPACE_BASE + CSR1212_PRIVATE_SPACE_SIZE)

#define  CSR1212_REGISTER_SPACE_BASE		(0xfffff0000000ULL)
#define  CSR1212_REGISTER_SPACE_SIZE		(256ULL * (1ULL << 20))
#define  CSR1212_REGISTER_SPACE_END		(CSR1212_REGISTER_SPACE_BASE + CSR1212_REGISTER_SPACE_SIZE)

#define  CSR1212_CSR_ARCH_REG_SPACE_BASE	(0xfffff0000000ULL)
#define  CSR1212_CSR_ARCH_REG_SPACE_SIZE	(512)
#define  CSR1212_CSR_ARCH_REG_SPACE_END		(CSR1212_CSR_ARCH_REG_SPACE_BASE + CSR1212_CSR_ARCH_REG_SPACE_SIZE)
#define  CSR1212_CSR_ARCH_REG_SPACE_OFFSET	(CSR1212_CSR_ARCH_REG_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)

#define  CSR1212_CSR_BUS_DEP_REG_SPACE_BASE	(0xfffff0000200ULL)
#define  CSR1212_CSR_BUS_DEP_REG_SPACE_SIZE	(512)
#define  CSR1212_CSR_BUS_DEP_REG_SPACE_END	(CSR1212_CSR_BUS_DEP_REG_SPACE_BASE + CSR1212_CSR_BUS_DEP_REG_SPACE_SIZE)
#define  CSR1212_CSR_BUS_DEP_REG_SPACE_OFFSET	(CSR1212_CSR_BUS_DEP_REG_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)

#define  CSR1212_CONFIG_ROM_SPACE_BASE		(0xfffff0000400ULL)
#define  CSR1212_CONFIG_ROM_SPACE_SIZE		(1024)
#define  CSR1212_CONFIG_ROM_SPACE_END		(CSR1212_CONFIG_ROM_SPACE_BASE + CSR1212_CONFIG_ROM_SPACE_SIZE)
#define  CSR1212_CONFIG_ROM_SPACE_OFFSET	(CSR1212_CONFIG_ROM_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)

#define  CSR1212_UNITS_SPACE_BASE		(0xfffff0000800ULL)
#define  CSR1212_UNITS_SPACE_SIZE		((256ULL * (1ULL << 20)) - 2048)
#define  CSR1212_UNITS_SPACE_END		(CSR1212_UNITS_SPACE_BASE + CSR1212_UNITS_SPACE_SIZE)
#define  CSR1212_UNITS_SPACE_OFFSET		(CSR1212_UNITS_SPACE_BASE - CSR1212_REGISTER_SPACE_BASE)

#define  CSR1212_EXTENDED_ROM_SIZE		(0x10000 * sizeof(u_int32_t))

#define  CSR1212_INVALID_ADDR_SPACE		-1

/* Config ROM image structures */
struct csr1212_bus_info_block_img {
	u_int8_t length;
	u_int8_t crc_length;
	u_int16_t crc;

	/* Must be last */
	u_int32_t data[0];	/* older gcc can't handle [] which is standard */
};

#define CSR1212_KV_KEY(quad)		(CSR1212_BE32_TO_CPU(quad) >> CSR1212_KV_KEY_SHIFT)
#define CSR1212_KV_KEY_TYPE(quad)	(CSR1212_KV_KEY(quad) >> CSR1212_KV_KEY_TYPE_SHIFT)
#define CSR1212_KV_KEY_ID(quad)		(CSR1212_KV_KEY(quad) & CSR1212_KV_KEY_ID_MASK)
#define CSR1212_KV_VAL(quad)		(CSR1212_BE32_TO_CPU(quad) & CSR1212_KV_VAL_MASK)

#define CSR1212_SET_KV_KEY(quad, key)	((quad) = \
	CSR1212_CPU_TO_BE32(CSR1212_KV_VAL(quad) | ((key) << CSR1212_KV_KEY_SHIFT)))
#define CSR1212_SET_KV_VAL(quad, val)	((quad) = \
	CSR1212_CPU_TO_BE32((CSR1212_KV_KEY(quad) << CSR1212_KV_KEY_SHIFT) | (val)))
#define CSR1212_SET_KV_TYPEID(quad, type, id)	((quad) = \
	CSR1212_CPU_TO_BE32(CSR1212_KV_VAL(quad) | \
	(((((type) & CSR1212_KV_KEY_TYPE_MASK) << CSR1212_KV_KEY_TYPE_SHIFT) | \
	  ((id) & CSR1212_KV_KEY_ID_MASK)) << CSR1212_KV_KEY_SHIFT)))

typedef u_int32_t csr1212_quad_t;


struct csr1212_keyval_img {
	u_int16_t length;
	u_int16_t crc;

	/* Must be last */
	csr1212_quad_t data[0];	/* older gcc can't handle [] which is standard */
};

struct csr1212_leaf {
	int len;
	u_int32_t *data;
};

struct csr1212_dentry {
	struct csr1212_dentry *next, *prev;
	struct csr1212_keyval *kv;
};

struct csr1212_directory {
	int len;
	struct csr1212_dentry *dentries_head, *dentries_tail;
};

struct csr1212_keyval {
	struct {
		u_int8_t type;
		u_int8_t id;
	} key;
	union {
		u_int32_t immediate;
		u_int32_t csr_offset;
		struct csr1212_leaf leaf;
		struct csr1212_directory directory;
	} value;
	struct csr1212_keyval *associate;
	int refcnt;

	/* used in generating and/or parsing CSR image */
	struct csr1212_keyval *next, *prev;	/* flat list of CSR elements */
	u_int32_t offset;	/* position in CSR from 0xffff f000 0000 */
	u_int8_t valid;		/* flag indicating keyval has valid data*/
};


struct csr1212_cache_region {
	struct csr1212_cache_region *next, *prev;
	u_int32_t offset_start;		/* inclusive */
	u_int32_t offset_end;		/* exclusive */
};

struct csr1212_csr_rom_cache {
	struct csr1212_csr_rom_cache *next, *prev;
	struct csr1212_cache_region *filled_head, *filled_tail;
	struct csr1212_keyval *layout_head, *layout_tail;
	size_t size;
	u_int32_t offset;
	struct csr1212_keyval *ext_rom;
	size_t len;

	/* Must be last */
	u_int32_t data[0];	/* older gcc can't handle [] which is standard */
};

struct csr1212_csr {
	size_t bus_info_len;	/* bus info block length in bytes */
	size_t crc_len;		/* crc length in bytes */
	u_int32_t *bus_info_data;	/* bus info data incl bus name and EUI */

	void *private;		/* private, bus specific data */
	struct csr1212_bus_ops *ops;

	struct csr1212_keyval *root_kv;

	int max_rom;		/* max bytes readable in Config ROM region */

	/* Items below used for image parsing and generation */
	struct csr1212_csr_rom_cache *cache_head, *cache_tail;
};

struct csr1212_bus_ops {
	/* This function is used by csr1212 to read additional information
	 * from remote nodes when parsing a Config ROM (i.e., read Config ROM
	 * entries located in the Units Space.  Must return 0 on success
	 * anything else indicates an error. */
	int (*bus_read) (struct csr1212_csr *csr, u_int64_t addr,
			 u_int16_t length, void *buffer, void *private);

	/* This function is used by csr1212 to allocate a region in units space
	 * in the event that Config ROM entries don't all fit in the predefined
	 * 1K region.  The void *private parameter is private member of struct
	 * csr1212_csr. */
	u_int64_t (*allocate_addr_range) (u_int64_t size, u_int32_t alignment,
					  void *private);


	/* This function is used by csr1212 to release a region in units space
	 * that is no longer needed. */
	void (*release_addr) (u_int64_t addr, void *private);

	/* This function is used by csr1212 to determine the max read request
	 * supported by a remote node when reading the ConfigROM space.  Must
	 * return 0, 1, or 2 per IEEE 1212.  */
	int (*get_max_rom) (u_int32_t *bus_info, void *private);
};




/* Descriptor Leaf manipulation macros */
#define CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT 24
#define CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK 0xffffff
#define CSR1212_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u_int32_t))

#define CSR1212_DESCRIPTOR_LEAF_TYPE(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[0]) >> CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)
#define CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[0]) & \
	 CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK)
#define CSR1212_DESCRIPTOR_LEAF_DATA(kv) \
	(&((kv)->value.leaf.data[1]))

#define CSR1212_DESCRIPTOR_LEAF_SET_TYPE(kv, type) \
	((kv)->value.leaf.data[0] = \
	 CSR1212_CPU_TO_BE32(CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) | \
			     ((type) << CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT)))
#define CSR1212_DESCRIPTOR_LEAF_SET_SPECIFIER_ID(kv, spec_id) \
	((kv)->value.leaf.data[0] = \
	 CSR1212_CPU_TO_BE32((CSR1212_DESCRIPTOR_LEAF_TYPE(kv) << \
			      CSR1212_DESCRIPTOR_LEAF_TYPE_SHIFT) | \
			     ((spec_id) & CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID_MASK)))

/* Text Descriptor Leaf manipulation macros */
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT 28
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK 0xf /* after shift */
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT 16
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK 0xfff  /* after shift */
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK 0xffff
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_OVERHEAD (1 * sizeof(u_int32_t))

#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) >> \
	 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT)
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) \
	((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) >> \
			     CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT) & \
			    CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK)
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]) & \
	 CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK)
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(kv) \
	(&((kv)->value.leaf.data[2]))

#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_WIDTH(kv, width) \
	((kv)->value.leaf.data[1] = \
	 ((kv)->value.leaf.data[1] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK << \
				CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT))) | \
	 CSR1212_CPU_TO_BE32(((width) & \
			      CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_MASK) << \
			     CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH_SHIFT))
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_CHAR_SET(kv, char_set) \
	((kv)->value.leaf.data[1] = \
	 ((kv)->value.leaf.data[1] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK << \
				CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT))) | \
	 CSR1212_CPU_TO_BE32(((char_set) & \
			      CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_MASK) << \
			     CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET_SHIFT))
#define CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language) \
	((kv)->value.leaf.data[1] = \
	 ((kv)->value.leaf.data[1] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK))) | \
	 CSR1212_CPU_TO_BE32(((language) & \
			      CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE_MASK)))


/* Icon Descriptor Leaf manipulation macros */
#define CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK 0xffffff
#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT 30
#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK 0x3 /* after shift */
#define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT 16
#define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK 0xf /* after shift */
#define CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK 0xffff
#define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT 16
#define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK 0xffff /* after shift */
#define CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK 0xffff
#define CSR1212_ICON_DESCRIPTOR_LEAF_OVERHEAD (3 * sizeof(u_int32_t))

#define CSR1212_ICON_DESCRIPTOR_LEAF_VERSION(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[2]) & \
	 CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK)

#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) >> \
	 CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT)

#define CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE(kv) \
	((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) >> \
	  CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT) & \
	 CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK)

#define CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[3]) & \
	 CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK)

#define CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN(kv) \
	((CSR1212_BE32_TO_CPU((kv)->value.leaf.data[4]) >> \
	  CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_HSCAN_SHIFT) & \
	 CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_HSCAN_MASK)

#define CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN(kv) \
	(CSR1212_BE32_TO_CPU((kv)->value.leaf.data[4]) & \
	 CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK)

#define CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE(kv) \
	(&((kv)->value.leaf.data[5]))

static inline u_int32_t *CSR1212_ICON_DESCRIPTOR_LEAF_PIXELS(struct csr1212_keyval *kv)
{
	static const int pd[4] = { 0, 4, 16, 256 };
	static const int cs[16] = { 4, 2 };
	int ps = pd[CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH(kv)];

	return &kv->value.leaf.data[5 +
				    (ps * cs[CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE(kv)]) /
			   sizeof(u_int32_t)];
}

#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_VERSION(kv, version) \
	((kv)->value.leaf.data[2] = \
	 ((kv)->value.leaf.data[2] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK))) | \
	 CSR1212_CPU_TO_BE32(((version) & \
			      CSR1212_ICON_DESCRIPTOR_LEAF_VERSION_MASK)))

#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_PALETTE_DEPTH(kv, palette_depth) \
	((kv)->value.leaf.data[3] = \
	 ((kv)->value.leaf.data[3] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK << \
				CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT))) | \
	 CSR1212_CPU_TO_BE32(((palette_depth) & \
			      CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_MASK) << \
			     CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE_DEPTH_SHIFT))

#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_COLOR_SPACE(kv, color_space) \
	((kv)->value.leaf.data[3] = \
	 ((kv)->value.leaf.data[3] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK << \
				CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT))) | \
	 CSR1212_CPU_TO_BE32(((color_space) & \
			      CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_MASK) << \
			     CSR1212_ICON_DESCRIPTOR_LEAF_COLOR_SPACE_SHIFT))

#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language) \
	((kv)->value.leaf.data[3] = \
	 ((kv)->value.leaf.data[3] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK))) | \
	 CSR1212_CPU_TO_BE32(((language) & \
			      CSR1212_ICON_DESCRIPTOR_LEAF_LANGUAGE_MASK)))

#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_HSCAN(kv, hscan) \
	((kv)->value.leaf.data[4] = \
	 ((kv)->value.leaf.data[4] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK << \
				CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT))) | \
	 CSR1212_CPU_TO_BE32(((hscan) & \
			      CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_MASK) << \
			     CSR1212_ICON_DESCRIPTOR_LEAF_HSCAN_SHIFT))

#define CSR1212_ICON_DESCRIPTOR_LEAF_SET_VSCAN(kv, vscan) \
	((kv)->value.leaf.data[4] = \
	 (((kv)->value.leaf.data[4] & \
	  CSR1212_CPU_TO_BE32(~CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK))) | \
	 CSR1212_CPU_TO_BE32(((vscan) & \
			      CSR1212_ICON_DESCRIPTOR_LEAF_VSCAN_MASK)))


/* Modifiable Descriptor Leaf manipulation macros */
#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT 16
#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK 0xffff
#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_SHIFT 32
#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK 0xffff
#define CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_LO_MASK 0xffffffffULL

#define CSR1212_MODIFIABLE_DESCRIPTOR_MAX_SIZE(kv) \
	CSR1212_BE16_TO_CPU((kv)->value.leaf.data[0] >> CSR1212_MODIFIABLE_DESCRIPTOR_MAX_SIZE_SHIFT)

#define CSR1212_MODIFIABLE_DESCRIPTOR_ADDRESS(kv) \
	(CSR1212_BE16_TO_CPU(((u_int64_t)((kv)->value.leaf.data[0])) << \
			     CSR1212_MODIFIABLE_DESCRIPTOR_ADDR_HI_SHIFT) | \
	 CSR1212_BE32_TO_CPU((kv)->value.leaf.data[1]))

#define CSR1212_MODIFIABLE_DESCRIPTOR_SET_MAX_SIZE(kv, size) \
	((kv)->value.leaf.data[0] = \
	 ((kv)->value.leaf.data[0] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK << \
				CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT))) | \
	 CSR1212_CPU_TO_BE32(((size) & \
			      CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_MASK) << \
			     CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_MAX_SIZE_SHIFT))

#define CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_HI(kv, addr) \
	((kv)->value.leaf.data[0] = \
	 ((kv)->value.leaf.data[0] & \
	  CSR1212_CPU_TO_BE32(~(CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK))) | \
	  CSR1212_CPU_TO_BE32(((addr) & \
			       CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_HI_MASK)))

#define CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_LO(kv, addr) \
	((kv)->value.leaf.data[1] = \
	 CSR1212_CPU_TO_BE32(addr & CSR1212_MODIFIABLE_DESCRIPTOR_LEAF_ADDR_LO_MASK))



/* The following 2 function are for creating new Configuration ROM trees.  The
 * first function is used for both creating local trees and parsing remote
 * trees.  The second function adds pertinent information to local Configuration
 * ROM trees - namely data for the bus information block. */
extern struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
					      size_t bus_info_size,
					      void *private);
extern void csr1212_init_local_csr(struct csr1212_csr *csr,
				   const u_int32_t *bus_info_data, int max_rom);


/* The following function destroys a Configuration ROM tree and release all
 * memory taken by the tree. */
extern void csr1212_destroy_csr(struct csr1212_csr *csr);


/* The following set of functions are fore creating new keyvals for placement in
 * a Configuration ROM tree.  Code that creates new keyvals with these functions
 * must release those keyvals with csr1212_release_keyval() when they are no
 * longer needed. */
extern struct csr1212_keyval *csr1212_new_immediate(u_int8_t key, u_int32_t value);
extern struct csr1212_keyval *csr1212_new_leaf(u_int8_t key, const void *data,
					       size_t data_len);
extern struct csr1212_keyval *csr1212_new_csr_offset(u_int8_t key,
						     u_int32_t csr_offset);
extern struct csr1212_keyval *csr1212_new_directory(u_int8_t key);
extern struct csr1212_keyval *csr1212_new_extended_immediate(u_int32_t spec,
							     u_int32_t key,
							     u_int32_t value);
extern struct csr1212_keyval *csr1212_new_extended_leaf(u_int32_t spec,
							u_int32_t key,
							const void *data,
							size_t data_len);
extern struct csr1212_keyval *csr1212_new_descriptor_leaf(u_int8_t dtype,
							  u_int32_t specifier_id,
							  const void *data,
							  size_t data_len);
extern struct csr1212_keyval *csr1212_new_textual_descriptor_leaf(u_int8_t cwidth,
								  u_int16_t cset,
								  u_int16_t language,
								  const void *data,
								  size_t data_len);
extern struct csr1212_keyval *csr1212_new_string_descriptor_leaf(const char *s);
extern struct csr1212_keyval *csr1212_new_icon_descriptor_leaf(u_int32_t version,
							       u_int8_t palette_depth,
							       u_int8_t color_space,
							       u_int16_t language,
							       u_int16_t hscan,
							       u_int16_t vscan,
							       u_int32_t *palette,
							       u_int32_t *pixels);
extern struct csr1212_keyval *csr1212_new_modifiable_descriptor_leaf(u_int16_t max_size,
								     u_int64_t address);
extern struct csr1212_keyval *csr1212_new_keyword_leaf(int strc,
						       const char *strv[]);


/* The following functions manage association between keyvals.  Typically,
 * Descriptor Leaves and Directories will be associated with another keyval and
 * it is desirable for the Descriptor keyval to be place immediately after the
 * keyval that it is associated with.*/
extern int csr1212_associate_keyval(struct csr1212_keyval *kv,
				    struct csr1212_keyval *associate);
extern void csr1212_disassociate_keyval(struct csr1212_keyval *kv);


/* The following functions manage the association of a keyval and directories.
 * A keyval may be attached to more than one directory. */
extern int csr1212_attach_keyval_to_directory(struct csr1212_keyval *dir,
					      struct csr1212_keyval *kv);
extern void csr1212_detach_keyval_from_directory(struct csr1212_keyval *dir,
						 struct csr1212_keyval *kv);


/* The following functions create a Configuration ROM image from the tree of
 * keyvals provided.  csr1212_generate_csr_image() creates a complete image in
 * the list of caches available via csr->cache_head.  The other functions are
 * provided should there be a need to create a flat image without restrictions
 * placed by IEEE 1212. */
extern struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *cache,
							 struct csr1212_keyval *start_kv,
							 int start_pos);
extern size_t csr1212_generate_layout_order(struct csr1212_keyval *kv);
extern void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache);
extern int csr1212_generate_csr_image(struct csr1212_csr *csr);


/* This is a convience function for reading a block of data out of one of the
 * caches in the csr->cache_head list. */
extern int csr1212_read(struct csr1212_csr *csr, u_int32_t offset, void *buffer,
			u_int32_t len);


/* The following functions are in place for parsing Configuration ROM images.
 * csr1212_parse_keyval() is used should there be a need to directly parse a
 * Configuration ROM directly. */
extern int csr1212_parse_keyval(struct csr1212_keyval *kv,
				struct csr1212_csr_rom_cache *cache);
extern int csr1212_parse_csr(struct csr1212_csr *csr);

/* These are internal functions referenced by inline functions below. */
extern int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv);
extern void _csr1212_destroy_keyval(struct csr1212_keyval *kv);


/* This function allocates a new cache which may be used for either parsing or
 * generating sub-sets of Configuration ROM images. */
static inline struct csr1212_csr_rom_cache *csr1212_rom_cache_malloc(u_int32_t offset,
								     size_t size)
{
	struct csr1212_csr_rom_cache *cache;

	cache = CSR1212_MALLOC(sizeof(*cache) + size);
	if (!cache)
		return NULL;

	cache->next = NULL;
	cache->prev = NULL;
	cache->filled_head = NULL;
	cache->filled_tail = NULL;
	cache->layout_head = NULL;
	cache->layout_tail = NULL;
	cache->offset = offset;
	cache->size = size;
	cache->ext_rom = NULL;

	return cache;
}


/* This function ensures that a keyval contains data when referencing a keyval
 * created by parsing a Configuration ROM. */
static inline struct csr1212_keyval *csr1212_get_keyval(struct csr1212_csr *csr,
							struct csr1212_keyval *kv)
{
	if (!kv)
		return NULL;
	if (!kv->valid)
		if (_csr1212_read_keyval(csr, kv) != CSR1212_SUCCESS)
			return NULL;
	return kv;
}


/* This function increments the reference count for a keyval should there be a
 * need for code to retain a keyval that has been parsed. */
static inline void csr1212_keep_keyval(struct csr1212_keyval *kv)
{
	kv->refcnt++;
}


/* This function decrements a keyval's reference count and will destroy the
 * keyval when there are no more users of the keyval.  This should be called by
 * any code that calls csr1212_keep_keyval() or any of the keyval creation
 * routines csr1212_new_*(). */
static inline void csr1212_release_keyval(struct csr1212_keyval *kv)
{
	if (kv->refcnt > 1)
		kv->refcnt--;
	else
		_csr1212_destroy_keyval(kv);
}


/*
 * This macro allows for looping over the keyval entries in a directory and it
 * ensures that keyvals from remote ConfigROMs are parsed properly.
 *
 * _csr is a struct csr1212_csr * that points to CSR associated with dir.
 * _kv is a struct csr1212_keyval * that'll point to the current keyval (loop index).
 * _dir is a struct csr1212_keyval * that points to the directory to be looped.
 * _pos is a struct csr1212_dentry * that is used internally for indexing.
 *
 * kv will be NULL upon exit of the loop.
 */
#define csr1212_for_each_dir_entry(_csr, _kv, _dir, _pos)			\
	for (csr1212_get_keyval((_csr), (_dir)),				\
	     _pos = (_dir)->value.directory.dentries_head,			\
	     _kv = (_pos) ? csr1212_get_keyval((_csr), _pos->kv) : NULL;	\
	     (_kv) && (_pos);							\
	     (_kv->associate == NULL) ?						\
		     ((_pos = _pos->next), 					\
		      (_kv = (_pos) ? csr1212_get_keyval((_csr), _pos->kv) :	\
                          NULL)) :						\
		     (_kv = csr1212_get_keyval((_csr), _kv->associate)))



#endif /* __CSR1212_H__ */