linuxkpi: Add dmi_* function

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

3 files changed, 119 insertions, 1 deletions

diff --git a/sys/compat/linuxkpi/common/include/linux/dmi.h b/sys/compat/linuxkpi/common/include/linux/dmi.h
new file mode 100644
index 000000000000..b921cc906917
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/dmi.h
@@ -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__ */
diff --git a/sys/compat/linuxkpi/common/include/linux/fs.h b/sys/compat/linuxkpi/common/include/linux/fs.h
index 66a1607b99e2..38911c276216 100644
--- a/sys/compat/linuxkpi/common/include/linux/fs.h
+++ b/sys/compat/linuxkpi/common/include/linux/fs.h
@@ -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);
diff --git a/sys/compat/linuxkpi/common/include/linux/mod_devicetable.h b/sys/compat/linuxkpi/common/include/linux/mod_devicetable.h
new file mode 100644
index 000000000000..f2a913bc6346
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/mod_devicetable.h
@@ -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__ */