diff options
| author | Michał Kępień <kernel@kempniu.pl> | 2016-01-22 17:27:13 +0300 |
|---|---|---|
| committer | Darren Hart <dvhart@linux.intel.com> | 2016-03-23 20:05:38 +0300 |
| commit | 2f9f26bd8614740b3c3b950394d945a99492a28e (patch) | |
| tree | 75ca9a6b8d4a117eb303e4e5f157c0c9b4210932 /drivers/platform/x86/dell-smbios.h | |
| parent | 7faa6a37fa106cb0cad6203e8fc2aea646cb253a (diff) | |
| download | linux-2f9f26bd8614740b3c3b950394d945a99492a28e.tar.xz | |
dell-laptop: extract SMBIOS-related code to a separate module
Extract SMBIOS-related code from dell-laptop to a new kernel module,
dell-smbios. The static specifier is removed from exported symbols,
otherwise code is just moved around.
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
[dvhart: Include linux/io.h in dell-smbios.c as caught by lkp]
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86/dell-smbios.h')
| -rw-r--r-- | drivers/platform/x86/dell-smbios.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell-smbios.h b/drivers/platform/x86/dell-smbios.h new file mode 100644 index 000000000000..3bc9080e4c5d --- /dev/null +++ b/drivers/platform/x86/dell-smbios.h @@ -0,0 +1,50 @@ +/* + * Common functions for kernel modules using Dell SMBIOS + * + * Copyright (c) Red Hat <mjg@redhat.com> + * Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com> + * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com> + * + * Based on documentation in the libsmbios package: + * Copyright (C) 2005-2014 Dell Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _DELL_SMBIOS_H_ +#define _DELL_SMBIOS_H_ + +/* This structure will be modified by the firmware when we enter + * system management mode, hence the volatiles */ + +struct calling_interface_buffer { + u16 class; + u16 select; + volatile u32 input[4]; + volatile u32 output[4]; +} __packed; + +struct calling_interface_token { + u16 tokenID; + u16 location; + union { + u16 value; + u16 stringlength; + }; +}; + +extern struct calling_interface_buffer *buffer; +extern struct calling_interface_token *da_tokens; + +void get_buffer(void); +void clear_buffer(void); +void release_buffer(void); +struct calling_interface_buffer * +dell_send_request(struct calling_interface_buffer *buffer, + int class, int select); + +int find_token_id(int tokenid); +int find_token_location(int tokenid); +#endif |