LXR qemu/hw/smbios/smbios

   1/*
   2 * SMBIOS Support
   3 *
   4 * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
   5 * Copyright (C) 2013 Red Hat, Inc.
   6 * Copyright (c) 2015,2016 Corey Minyard, MontaVista Software, LLC
   7 *
   8 * Authors:
   9 *  Alex Williamson <alex.williamson@hp.com>
  10 *  Markus Armbruster <armbru@redhat.com>
  11 *
  12 * This work is licensed under the terms of the GNU GPL, version 2.  See
  13 * the COPYING file in the top-level directory.
  14 *
  15 * Contributions after 2012-01-13 are licensed under the terms of the
  16 * GNU GPL, version 2 or (at your option) any later version.
  17 */
  18
  19#ifndef QEMU_SMBIOS_BUILD_H
  20#define QEMU_SMBIOS_BUILD_H
  21
  22bool smbios_skip_table(uint8_t type, bool required_table);
  23
  24extern uint8_t *smbios_tables;
  25extern size_t smbios_tables_len;
  26extern unsigned smbios_table_max;
  27extern unsigned smbios_table_cnt;
  28
  29#define SMBIOS_BUILD_TABLE_PRE(tbl_type, tbl_handle, tbl_required)        \
  30    struct smbios_type_##tbl_type *t;                                     \
  31    size_t t_off; /* table offset into smbios_tables */                   \
  32    int str_index = 0;                                                    \
  33    do {                                                                  \
  34        /* should we skip building this table ? */                        \
  35        if (smbios_skip_table(tbl_type, tbl_required)) {                  \
  36            return;                                                       \
  37        }                                                                 \
  38                                                                          \
  39        /* use offset of table t within smbios_tables */                  \
  40        /* (pointer must be updated after each realloc) */                \
  41        t_off = smbios_tables_len;                                        \
  42        smbios_tables_len += sizeof(*t);                                  \
  43        smbios_tables = g_realloc(smbios_tables, smbios_tables_len);      \
  44        t = (struct smbios_type_##tbl_type *)(smbios_tables + t_off);     \
  45                                                                          \
  46        t->header.type = tbl_type;                                        \
  47        t->header.length = sizeof(*t);                                    \
  48        t->header.handle = cpu_to_le16(tbl_handle);                       \
  49    } while (0)
  50
  51#define SMBIOS_TABLE_SET_STR(tbl_type, field, value)                      \
  52    do {                                                                  \
  53        int len = (value != NULL) ? strlen(value) + 1 : 0;                \
  54        if (len > 1) {                                                    \
  55            smbios_tables = g_realloc(smbios_tables,                      \
  56                                      smbios_tables_len + len);           \
  57            memcpy(smbios_tables + smbios_tables_len, value, len);        \
  58            smbios_tables_len += len;                                     \
  59            /* update pointer post-realloc */                             \
  60            t = (struct smbios_type_##tbl_type *)(smbios_tables + t_off); \
  61            t->field = ++str_index;                                       \
  62        } else {                                                          \
  63            t->field = 0;                                                 \
  64        }                                                                 \
  65    } while (0)
  66
  67#define SMBIOS_TABLE_SET_STR_LIST(tbl_type, value)                        \
  68    do {                                                                  \
  69        int len = (value != NULL) ? strlen(value) + 1 : 0;                \
  70        if (len > 1) {                                                    \
  71            smbios_tables = g_realloc(smbios_tables,                      \
  72                                      smbios_tables_len + len);           \
  73            memcpy(smbios_tables + smbios_tables_len, value, len);        \
  74            smbios_tables_len += len;                                     \
  75            ++str_index;                                                  \
  76        }                                                                 \
  77    } while (0)
  78
  79#define SMBIOS_BUILD_TABLE_POST                                           \
  80    do {                                                                  \
  81        size_t term_cnt, t_size;                                          \
  82                                                                          \
  83        /* add '\0' terminator (add two if no strings defined) */         \
  84        term_cnt = (str_index == 0) ? 2 : 1;                              \
  85        smbios_tables = g_realloc(smbios_tables,                          \
  86                                  smbios_tables_len + term_cnt);          \
  87        memset(smbios_tables + smbios_tables_len, 0, term_cnt);           \
  88        smbios_tables_len += term_cnt;                                    \
  89                                                                          \
  90        /* update smbios max. element size */                             \
  91        t_size = smbios_tables_len - t_off;                               \
  92        if (t_size > smbios_table_max) {                                  \
  93            smbios_table_max = t_size;                                    \
  94        }                                                                 \
  95                                                                          \
  96        /* update smbios element count */                                 \
  97        smbios_table_cnt++;                                               \
  98    } while (0)
  99
 100/* IPMI SMBIOS firmware handling */
 101void smbios_build_type_38_table(void);
 102
 103#endif /* QEMU_SMBIOS_BUILD_H */
 104