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linuxkpi: Add dmi_* function

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dmi function are used to get smbios values.
The DRM subsystem and drivers use it to enabled (or not) quirks.

Reviewed by:	hselasky
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D26046
This commit is contained in:
Emmanuel Vadot 2020-10-02 18:28:00 +00:00
parent 2b68c97337
commit a91b408a36
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=366373
6 changed files with 262 additions and 1 deletions
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46
sys/compat/linuxkpi/common/include/linux/dmi.h Normal file
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@ -0,0 +1,46 @@
/*-
* 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.
*
* $FreeBSD$
*/
#ifndef __LINUX_DMI_H__
#define __LINUX_DMI_H__
#include <linux/mod_devicetable.h>
int linux_dmi_check_system(const struct dmi_system_id *);
bool linux_dmi_match(enum dmi_field, const char *);
const struct dmi_system_id *linux_dmi_first_match(const struct dmi_system_id *);
const char *linux_dmi_get_system_info(int);
#define dmi_check_system(sysid) linux_dmi_check_system(sysid)
#define dmi_match(f, str) linux_dmi_match(f, str)
#define dmi_first_match(sysid) linux_dmi_first_match(sysid)
#define dmi_get_system_info(sysid) linux_dmi_get_system_info(sysid)
#endif /* __LINUX_DMI_H__ */

2
sys/compat/linuxkpi/common/include/linux/fs.h
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@ -180,7 +180,7 @@ struct file_operations {
#define FMODE_READ FREAD
#define FMODE_WRITE FWRITE
#define FMODE_EXEC FEXEC
#define FMODE_UNSIGNED_OFFSET 0x2000
int __register_chrdev(unsigned int major, unsigned int baseminor,
unsigned int count, const char *name,
const struct file_operations *fops);

72
sys/compat/linuxkpi/common/include/linux/mod_devicetable.h Normal file
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@ -0,0 +1,72 @@
/*-
* 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.
*
* $FreeBSD$
*/
#ifndef __LINUX_MOD_DEVICETABLE_H__
#define __LINUX_MOD_DEVICETABLE_H__
enum dmi_field {
DMI_NONE,
DMI_BIOS_VENDOR,
DMI_BIOS_VERSION,
DMI_BIOS_DATE,
DMI_SYS_VENDOR,
DMI_PRODUCT_NAME,
DMI_PRODUCT_VERSION,
DMI_PRODUCT_SERIAL,
DMI_PRODUCT_UUID,
DMI_BOARD_VENDOR,
DMI_BOARD_NAME,
DMI_BOARD_VERSION,
DMI_BOARD_SERIAL,
DMI_BOARD_ASSET_TAG,
DMI_CHASSIS_VENDOR,
DMI_CHASSIS_TYPE,
DMI_CHASSIS_VERSION,
DMI_CHASSIS_SERIAL,
DMI_CHASSIS_ASSET_TAG,
DMI_STRING_MAX,
};
struct dmi_strmatch {
unsigned char slot;
char substr[79];
};
struct dmi_system_id {
int (*callback)(const struct dmi_system_id *);
const char *ident;
struct dmi_strmatch matches[4];
void *driver_data;
};
#define DMI_MATCH(a, b) { .slot = a, .substr = b }
#define DMI_EXACT_MATCH(a, b) { .slot = a, .substr = b, }
#endif /* __LINUX_MOD_DEVICETABLE_H__ */

140
sys/compat/linuxkpi/common/src/linux_dmi.c Normal file
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@ -0,0 +1,140 @@
/*-
* 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);
}

2
sys/conf/files
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@ -4510,6 +4510,8 @@ compat/linuxkpi/common/src/linux_compat.c optional compat_linuxkpi \
compile-with "${LINUXKPI_C}"
compat/linuxkpi/common/src/linux_current.c optional compat_linuxkpi \
compile-with "${LINUXKPI_C}"
compat/linuxkpi/common/src/linux_dmi.c optional compat_linuxkpi \
compile-with "${LINUXKPI_C}"
compat/linuxkpi/common/src/linux_hrtimer.c optional compat_linuxkpi \
compile-with "${LINUXKPI_C}"
compat/linuxkpi/common/src/linux_kthread.c optional compat_linuxkpi \

1
sys/modules/linuxkpi/Makefile
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@ -4,6 +4,7 @@
KMOD= linuxkpi
SRCS= linux_compat.c \
linux_current.c \
linux_dmi.c \
linux_hrtimer.c \
linux_idr.c \
linux_kmod.c \