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Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
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/* Generic MTRR (Memory Type Range Register) ioctls.
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Copyright (C) 1997-1999 Richard Gooch
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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Richard Gooch may be reached by email at rgooch@atnf.csiro.au
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The postal address is:
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Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
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*/
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#ifndef _UAPI_ASM_X86_MTRR_H
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#define _UAPI_ASM_X86_MTRR_H
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#include <linux/errno.h>
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#define MTRR_IOCTL_BASE 'M'
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/* Warning: this structure has a different order from i386
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on x86-64. The 32bit emulation code takes care of that.
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But you need to use this for 64bit, otherwise your X server
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will break. */
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#ifdef __i386__
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struct mtrr_sentry {
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unsigned long base; /* Base address */
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unsigned int size; /* Size of region */
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unsigned int type; /* Type of region */
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};
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struct mtrr_gentry {
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unsigned int regnum; /* Register number */
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unsigned long base; /* Base address */
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unsigned int size; /* Size of region */
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unsigned int type; /* Type of region */
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};
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#else /* __i386__ */
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struct mtrr_sentry {
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__u64 base; /* Base address */
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__u32 size; /* Size of region */
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__u32 type; /* Type of region */
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};
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struct mtrr_gentry {
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__u64 base; /* Base address */
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__u32 size; /* Size of region */
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__u32 regnum; /* Register number */
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__u32 type; /* Type of region */
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__u32 _pad; /* Unused */
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};
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#endif /* !__i386__ */
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struct mtrr_var_range {
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__u32 base_lo;
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__u32 base_hi;
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__u32 mask_lo;
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__u32 mask_hi;
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};
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/* In the Intel processor's MTRR interface, the MTRR type is always held in
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an 8 bit field: */
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typedef __u8 mtrr_type;
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#define MTRR_NUM_FIXED_RANGES 88
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#define MTRR_MAX_VAR_RANGES 256
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struct mtrr_state_type {
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struct mtrr_var_range var_ranges[MTRR_MAX_VAR_RANGES];
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mtrr_type fixed_ranges[MTRR_NUM_FIXED_RANGES];
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unsigned char enabled;
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unsigned char have_fixed;
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mtrr_type def_type;
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};
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#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
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#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
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/* These are the various ioctls */
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#define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
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#define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
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#define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
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#define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
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#define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
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#define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
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#define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
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#define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
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#define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
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#define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
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/* MTRR memory types, which are defined in SDM */
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#define MTRR_TYPE_UNCACHABLE 0
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#define MTRR_TYPE_WRCOMB 1
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/*#define MTRR_TYPE_ 2*/
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/*#define MTRR_TYPE_ 3*/
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#define MTRR_TYPE_WRTHROUGH 4
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#define MTRR_TYPE_WRPROT 5
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#define MTRR_TYPE_WRBACK 6
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#define MTRR_NUM_TYPES 7
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/*
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* Invalid MTRR memory type. mtrr_type_lookup() returns this value when
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* MTRRs are disabled. Note, this value is allocated from the reserved
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* values (0x7-0xff) of the MTRR memory types.
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*/
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#define MTRR_TYPE_INVALID 0xff
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#endif /* _UAPI_ASM_X86_MTRR_H */
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