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      1 /*	$NetBSD: mdesc.h,v 1.5 2016/06/22 20:13:00 palle Exp $	*/
      2 /*	$OpenBSD: mdesc.h,v 1.3 2014/11/30 22:26:14 kettenis Exp $	*/
      3 /*
      4  * Copyright (c) 2009 Mark Kettenis
      5  *
      6  * Permission to use, copy, modify, and distribute this software for any
      7  * purpose with or without fee is hereby granted, provided that the above
      8  * copyright notice and this permission notice appear in all copies.
      9  *
     10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     17  */
     18 
     19 #ifndef	_MDESC_H_
     20 #define _MDESC_H_
     21 
     22 struct md_header {
     23 	uint32_t	transport_version;
     24 	uint32_t	node_blk_sz;
     25 	uint32_t	name_blk_sz;
     26 	uint32_t	data_blk_sz;
     27 };
     28 
     29 struct md_element {
     30 	uint8_t		tag;
     31 	uint8_t		name_len;
     32 	uint16_t	_reserved_field;
     33 	uint32_t	name_offset;
     34 	union {
     35 		struct {
     36 			uint32_t	data_len;
     37 			uint32_t	data_offset;
     38 		} y;
     39 		uint64_t	val;
     40 	} d;
     41 };
     42 
     43 extern vaddr_t mdesc;
     44 
     45 #ifdef _KERNEL
     46 psize_t	mdesc_get_len(void);
     47 void	mdesc_init(vaddr_t, paddr_t, psize_t);
     48 uint64_t mdesc_get_prop_val(int, const char *);
     49 const char *mdesc_get_prop_str(int, const char *);
     50 const char *mdesc_get_prop_data(int, const char *, size_t *);
     51 int	mdesc_find(const char *, uint64_t);
     52 int	mdesc_find_child(int, const char *, uint64_t);
     53 int	mdesc_find_node(const char *);
     54 int	mdesc_find_node_by_idx(int, const char *);
     55 int	mdesc_next_node(int);
     56 const char *mdesc_name_by_idx(int);
     57 #endif
     58 
     59 #endif /* _MDESC_H_ */
     60