usr/src/lib/libfru/libfruraw/fru_access_impl.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _FRU_ACCESS_IMPL_H
  28 #define _FRU_ACCESS_IMPL_H
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 #include <stdlib.h>
  35 #include <stdio.h>
  36 #include <sys/types.h>
  37 #include <unistd.h>
  38 #include <sys/stat.h>
  39 #include <fcntl.h>
  40 #include <dial.h>
  41 #include <strings.h>
  42 #include <libdevinfo.h>
  43 #include <sys/systeminfo.h>
  44 #include <sys/byteorder.h>
  45 #include <syslog.h>
  46 #include <errno.h>
  47 #include <libfru.h>
  48 #include <limits.h>
  49 #include <fru_tag.h>
  50 #include <fru_access.h>
  51
  52
  53 /* object types */
  54 typedef enum {CONTAINER_TYPE, SECTION_TYPE, SEGMENT_TYPE, PACKET_TYPE} object_t;
  55
  56 #define TABLE_SIZE              64      /* hash table size */
  57
  58
  59 /* section header */
  60 #define SECTION_HDR_TAG         0x08
  61 #define SECTION_HDR_VER         0x0001
  62 #define SECTION_HDR_LENGTH      0x06
  63 #define SECTION_HDR_CRC8        0x00
  64 #define SECTION_HDR_VER_BIT0    0x00
  65 #define SECTION_HDR_VER_BIT1    0x01
  66
  67 #define READ_ONLY_SECTION       1       /* section is read-only */
  68
  69 #define GET_SEGMENT_DESCRIPTOR  \
  70                 (BE_16(seg_layout->descriptor[1])| \
  71                 BE_16(seg_layout->descriptor[0] << 16))
  72
  73 #define GET_SECTION_HDR_VERSION \
  74                 (sec_hdr.headerversion[1]|sec_hdr.headerversion[0] << 8)
  75
  76 /* Segment Trailer Tag */
  77 #define SEG_TRAILER_TAG 0x0C
  78
  79 /* defines fixed segment */
  80 #define SEGMENT_FIXED           1
  81
  82 typedef union {
  83         uint32_t all_bits;
  84         struct {
  85                 unsigned read_only : 1;
  86                 unsigned unused : 8;
  87                 unsigned : 8;
  88                 unsigned : 8;
  89                 unsigned : 7;
  90         } field;
  91 } sectdescbit_t;
  92
  93 typedef enum {
  94         ENC_STANDARD = 0,       /* proper fruid data */
  95         ENC_SPD                 /* serial presence detect data */
  96 } sectencoding_t;
  97
  98 typedef struct {
  99         sectdescbit_t   description;
 100         uint32_t        address; /* for SEEPROMS this is the offset */
 101         uint32_t        size;
 102         sectencoding_t  encoding;
 103 } sectioninfo_t;
 104
 105 typedef uint16_t headerrev_t;
 106
 107 #define MAX_NUMOF_SECTION       2
 108
 109 typedef struct {
 110         headerrev_t header_ver;
 111         int num_sections;
 112         sectioninfo_t section_info[MAX_NUMOF_SECTION];
 113 } container_info_t;
 114
 115
 116 /* section header layout */
 117 typedef struct {
 118         uint8_t headertag; /* section header tag */
 119         uint8_t headerversion[2]; /* header version (msb) */
 120         uint8_t headerlength; /* header length */
 121         uint8_t headercrc8; /* crc8 */
 122         uint8_t segmentcount; /* total number of segment */
 123 } section_layout_t;
 124
 125 /* segment header layout */
 126 typedef struct  {
 127         uint16_t        name;   /* segment name */
 128         uint16_t        descriptor[2]; /* descriptor (msb) */
 129         uint16_t        offset; /* segment data offset */
 130         uint16_t        length; /* segment length */
 131 } segment_layout_t;
 132
 133 /* segment information used in finding new offset for a new segment */
 134 typedef struct {
 135         int segnum;     /* segment number */
 136         int offset;     /* segment offset */
 137         int length;     /* segment length */
 138         int fixed;      /* fixed or non-fixed segment */
 139 } seg_info_t;
 140
 141 typedef uint64_t        handle_t;
 142
 143 struct  hash_obj;
 144
 145 /* packet hash object */
 146 typedef struct {
 147         handle_t        segment_hdl;    /* segment handle */
 148         fru_tag_t       tag;
 149         int             tag_size;
 150         uint8_t         *payload;
 151         uint32_t        paylen;
 152         uint32_t        payload_offset;
 153         struct hash_obj *next;
 154 } packet_obj_t;
 155
 156 /* segment hash object */
 157 typedef struct {
 158         handle_t        section_hdl;    /* section handle */
 159         int             num_of_packets; /* in a segment */
 160         int             trailer_offset;
 161         segment_t       segment;
 162         struct hash_obj *pkt_obj_list;  /* packet object list */
 163         struct hash_obj *next;
 164 } segment_obj_t;
 165
 166 /* section hash object */
 167 typedef struct {
 168         handle_t        cont_hdl;       /* container handle */
 169         section_t       section;
 170         sectencoding_t  encoding;       /* standard or needing interpretation */
 171         int     num_of_segment;         /* in a section */
 172         struct hash_obj *seg_obj_list;  /* points to segment objects list */
 173         struct hash_obj *next;
 174 } section_obj_t;
 175
 176 /* container hash object */
 177 typedef struct {
 178         char    device_pathname[PATH_MAX]; /* device name */
 179         int     num_of_section; /* num of section in container */
 180         struct hash_obj *sec_obj_list; /* points to section objects list */
 181 } container_obj_t;
 182
 183 /* hash object */
 184 typedef struct hash_obj {
 185         int     object_type;
 186         handle_t obj_hdl;
 187         union {
 188                 container_obj_t         *cont_obj;
 189                 section_obj_t           *sec_obj;
 190                 segment_obj_t           *seg_obj;
 191                 packet_obj_t            *pkt_obj;
 192         } u;
 193         struct hash_obj         *next;
 194         struct hash_obj         *prev;
 195 } hash_obj_t;
 196
 197 unsigned char compute_crc8(unsigned char *bytes, int length);
 198 long compute_crc32(unsigned char *bytes, int length);
 199 long compute_checksum32(unsigned char *bytes, int length);
 200
 201 #ifdef  __cplusplus
 202 }
 203 #endif
 204
 205 #endif /* _FRU_ACCESS_IMPL_H */