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/*-
* Copyright (c) 2020 The FreeBSD Foundation
*
* This software was developed by Emmanuel Vadot under sponsorship
* from the FreeBSD Foundation.
*
* 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 THE 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <linux/dmi.h>
static char *dmi_data[DMI_STRING_MAX];
static void
linux_dmi_preload(void *arg)
{
dmi_data[DMI_BIOS_VENDOR] = kern_getenv("smbios.bios.vendor");
dmi_data[DMI_BIOS_VERSION] = kern_getenv("smbios.bios.version");
dmi_data[DMI_BIOS_DATE] = kern_getenv("smbios.bios.reldate");
dmi_data[DMI_SYS_VENDOR] = kern_getenv("smbios.system.maker");
dmi_data[DMI_PRODUCT_NAME] = kern_getenv("smbios.system.product");
dmi_data[DMI_PRODUCT_VERSION] = kern_getenv("smbios.system.version");
dmi_data[DMI_PRODUCT_SERIAL] = kern_getenv("smbios.system.serial");
dmi_data[DMI_PRODUCT_UUID] = kern_getenv("smbios.system.uuid");
dmi_data[DMI_BOARD_VENDOR] = kern_getenv("smbios.planar.maker");
dmi_data[DMI_BOARD_NAME] = kern_getenv("smbios.planar.product");
dmi_data[DMI_BOARD_VERSION] = kern_getenv("smbios.planar.version");
dmi_data[DMI_BOARD_SERIAL] = kern_getenv("smbios.planar.serial");
dmi_data[DMI_BOARD_ASSET_TAG] = kern_getenv("smbios.planar.tag");
dmi_data[DMI_CHASSIS_VENDOR] = kern_getenv("smbios.chassis.maker");
dmi_data[DMI_CHASSIS_TYPE] = kern_getenv("smbios.chassis.type");
dmi_data[DMI_CHASSIS_VERSION] = kern_getenv("smbios.chassis.version");
dmi_data[DMI_CHASSIS_SERIAL] = kern_getenv("smbios.chassis.serial");
dmi_data[DMI_CHASSIS_ASSET_TAG] = kern_getenv("smbios.chassis.tag");
}
SYSINIT(linux_dmi_preload, SI_SUB_DRIVERS, SI_ORDER_ANY, linux_dmi_preload, NULL);
/* Match a system against a field */
bool
linux_dmi_match(enum dmi_field f, const char *str)
{
if (f < DMI_STRING_MAX &&
dmi_data[f] != NULL &&
strcmp(dmi_data[f], str) == 0)
return(true);
return (false);
}
/* Match a system against the struct, all matches must be ok */
static bool
linux_dmi_matches(const struct dmi_system_id *dsi)
{
int i;
for (i = 0; i < nitems(dsi->matches); i++) {
if (dsi->matches[i].slot == DMI_NONE)
break;
if (dmi_match(dsi->matches[i].slot,
dsi->matches[i].substr) == false)
return (false);
}
return (true);
}
/* Return the string matching the field */
const char *
linux_dmi_get_system_info(int field)
{
if (field < DMI_STRING_MAX)
return (dmi_data[field]);
return (NULL);
}
/*
* Match a system against the structs list
* If a match is found return the corresponding structure.
*/
const struct dmi_system_id *
linux_dmi_first_match(const struct dmi_system_id *list)
{
const struct dmi_system_id *dsi;
for (dsi = list; dsi->matches[0].slot != 0; dsi++) {
if (linux_dmi_matches(dsi))
return (dsi);
}
return (NULL);
}
/*
* Match a system against the structs list
* For each match call the callback with the corresponding data
* Return the number of matches.
*/
int
linux_dmi_check_system(const struct dmi_system_id *sysid)
{
const struct dmi_system_id *dsi;
int matches = 0;
for (dsi = sysid; dsi->matches[0].slot != 0; dsi++) {
if (linux_dmi_matches(dsi)) {
matches++;
if (dsi->callback && dsi->callback(dsi))
break;
}
}
return (matches);
}
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