The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/asm/mtrr.h


$ cat -n /usr/include/x86_64-linux-gnu/asm/mtrr.h

     1	/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
     2	/*  Generic MTRR (Memory Type Range Register) ioctls.
     3	
     4	    Copyright (C) 1997-1999  Richard Gooch
     5	
     6	    This library is free software; you can redistribute it and/or
     7	    modify it under the terms of the GNU Library General Public
     8	    License as published by the Free Software Foundation; either
     9	    version 2 of the License, or (at your option) any later version.
    10	
    11	    This library is distributed in the hope that it will be useful,
    12	    but WITHOUT ANY WARRANTY; without even the implied warranty of
    13	    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    14	    Library General Public License for more details.
    15	
    16	    You should have received a copy of the GNU Library General Public
    17	    License along with this library; if not, write to the Free
    18	    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    19	
    20	    Richard Gooch may be reached by email at  rgooch@atnf.csiro.au
    21	    The postal address is:
    22	      Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
    23	*/
    24	#ifndef _ASM_X86_MTRR_H
    25	#define _ASM_X86_MTRR_H
    26	
    27	#include <linux/types.h>
    28	#include <linux/ioctl.h>
    29	#include <linux/errno.h>
    30	
    31	#define	MTRR_IOCTL_BASE	'M'
    32	
    33	/* Warning: this structure has a different order from i386
    34	   on x86-64. The 32bit emulation code takes care of that.
    35	   But you need to use this for 64bit, otherwise your X server
    36	   will break. */
    37	
    38	#ifdef __i386__
    39	struct mtrr_sentry {
    40	    unsigned long base;    /*  Base address     */
    41	    unsigned int size;    /*  Size of region   */
    42	    unsigned int type;     /*  Type of region   */
    43	};
    44	
    45	struct mtrr_gentry {
    46	    unsigned int regnum;   /*  Register number  */
    47	    unsigned long base;    /*  Base address     */
    48	    unsigned int size;    /*  Size of region   */
    49	    unsigned int type;     /*  Type of region   */
    50	};
    51	
    52	#else /* __i386__ */
    53	
    54	struct mtrr_sentry {
    55		__u64 base;		/*  Base address     */
    56		__u32 size;		/*  Size of region   */
    57		__u32 type;		/*  Type of region   */
    58	};
    59	
    60	struct mtrr_gentry {
    61		__u64 base;		/*  Base address     */
    62		__u32 size;		/*  Size of region   */
    63		__u32 regnum;		/*  Register number  */
    64		__u32 type;		/*  Type of region   */
    65		__u32 _pad;		/*  Unused	     */
    66	};
    67	
    68	#endif /* !__i386__ */
    69	
    70	struct mtrr_var_range {
    71		__u32 base_lo;
    72		__u32 base_hi;
    73		__u32 mask_lo;
    74		__u32 mask_hi;
    75	};
    76	
    77	/* In the Intel processor's MTRR interface, the MTRR type is always held in
    78	   an 8 bit field: */
    79	typedef __u8 mtrr_type;
    80	
    81	#define MTRR_NUM_FIXED_RANGES 88
    82	#define MTRR_MAX_VAR_RANGES 256
    83	
    84	#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
    85	#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
    86	
    87	/*  These are the various ioctls  */
    88	#define MTRRIOC_ADD_ENTRY        _IOW(MTRR_IOCTL_BASE,  0, struct mtrr_sentry)
    89	#define MTRRIOC_SET_ENTRY        _IOW(MTRR_IOCTL_BASE,  1, struct mtrr_sentry)
    90	#define MTRRIOC_DEL_ENTRY        _IOW(MTRR_IOCTL_BASE,  2, struct mtrr_sentry)
    91	#define MTRRIOC_GET_ENTRY        _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
    92	#define MTRRIOC_KILL_ENTRY       _IOW(MTRR_IOCTL_BASE,  4, struct mtrr_sentry)
    93	#define MTRRIOC_ADD_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  5, struct mtrr_sentry)
    94	#define MTRRIOC_SET_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  6, struct mtrr_sentry)
    95	#define MTRRIOC_DEL_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  7, struct mtrr_sentry)
    96	#define MTRRIOC_GET_PAGE_ENTRY   _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
    97	#define MTRRIOC_KILL_PAGE_ENTRY  _IOW(MTRR_IOCTL_BASE,  9, struct mtrr_sentry)
    98	
    99	/* MTRR memory types, which are defined in SDM */
   100	#define MTRR_TYPE_UNCACHABLE 0
   101	#define MTRR_TYPE_WRCOMB     1
   102	/*#define MTRR_TYPE_         2*/
   103	/*#define MTRR_TYPE_         3*/
   104	#define MTRR_TYPE_WRTHROUGH  4
   105	#define MTRR_TYPE_WRPROT     5
   106	#define MTRR_TYPE_WRBACK     6
   107	#define MTRR_NUM_TYPES       7
   108	
   109	/*
   110	 * Invalid MTRR memory type.  No longer used outside of MTRR code.
   111	 * Note, this value is allocated from the reserved values (0x7-0xff) of
   112	 * the MTRR memory types.
   113	 */
   114	#define MTRR_TYPE_INVALID    0xff
   115	
   116	#endif /* _ASM_X86_MTRR_H */