cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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md_u.h (4499B)

      1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
      2/*
      3   md_u.h : user <=> kernel API between Linux raidtools and RAID drivers
      4          Copyright (C) 1998 Ingo Molnar
      5	  
      6   This program is free software; you can redistribute it and/or modify
      7   it under the terms of the GNU General Public License as published by
      8   the Free Software Foundation; either version 2, or (at your option)
      9   any later version.
     10   
     11   You should have received a copy of the GNU General Public License
     12   (for example /usr/src/linux/COPYING); if not, write to the Free
     13   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
     14*/
     15
     16#ifndef _UAPI_MD_U_H
     17#define _UAPI_MD_U_H
     18
     19/*
     20 * Different major versions are not compatible.
     21 * Different minor versions are only downward compatible.
     22 * Different patchlevel versions are downward and upward compatible.
     23 */
     24#define MD_MAJOR_VERSION                0
     25#define MD_MINOR_VERSION                90
     26/*
     27 * MD_PATCHLEVEL_VERSION indicates kernel functionality.
     28 * >=1 means different superblock formats are selectable using SET_ARRAY_INFO
     29 *     and major_version/minor_version accordingly
     30 * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT
     31 *     in the super status byte
     32 * >=3 means that bitmap superblock version 4 is supported, which uses
     33 *     little-ending representation rather than host-endian
     34 */
     35#define MD_PATCHLEVEL_VERSION           3
     36
     37/* ioctls */
     38
     39/* status */
     40#define RAID_VERSION		_IOR (MD_MAJOR, 0x10, mdu_version_t)
     41#define GET_ARRAY_INFO		_IOR (MD_MAJOR, 0x11, mdu_array_info_t)
     42#define GET_DISK_INFO		_IOR (MD_MAJOR, 0x12, mdu_disk_info_t)
     43#define RAID_AUTORUN		_IO (MD_MAJOR, 0x14)
     44#define GET_BITMAP_FILE		_IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
     45
     46/* configuration */
     47#define CLEAR_ARRAY		_IO (MD_MAJOR, 0x20)
     48#define ADD_NEW_DISK		_IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
     49#define HOT_REMOVE_DISK		_IO (MD_MAJOR, 0x22)
     50#define SET_ARRAY_INFO		_IOW (MD_MAJOR, 0x23, mdu_array_info_t)
     51#define SET_DISK_INFO		_IO (MD_MAJOR, 0x24)
     52#define WRITE_RAID_INFO		_IO (MD_MAJOR, 0x25)
     53#define UNPROTECT_ARRAY		_IO (MD_MAJOR, 0x26)
     54#define PROTECT_ARRAY		_IO (MD_MAJOR, 0x27)
     55#define HOT_ADD_DISK		_IO (MD_MAJOR, 0x28)
     56#define SET_DISK_FAULTY		_IO (MD_MAJOR, 0x29)
     57#define HOT_GENERATE_ERROR	_IO (MD_MAJOR, 0x2a)
     58#define SET_BITMAP_FILE		_IOW (MD_MAJOR, 0x2b, int)
     59
     60/* usage */
     61#define RUN_ARRAY		_IOW (MD_MAJOR, 0x30, mdu_param_t)
     62/*  0x31 was START_ARRAY  */
     63#define STOP_ARRAY		_IO (MD_MAJOR, 0x32)
     64#define STOP_ARRAY_RO		_IO (MD_MAJOR, 0x33)
     65#define RESTART_ARRAY_RW	_IO (MD_MAJOR, 0x34)
     66#define CLUSTERED_DISK_NACK	_IO (MD_MAJOR, 0x35)
     67
     68/* 63 partitions with the alternate major number (mdp) */
     69#define MdpMinorShift 6
     70
     71typedef struct mdu_version_s {
     72	int major;
     73	int minor;
     74	int patchlevel;
     75} mdu_version_t;
     76
     77typedef struct mdu_array_info_s {
     78	/*
     79	 * Generic constant information
     80	 */
     81	int major_version;
     82	int minor_version;
     83	int patch_version;
     84	unsigned int ctime;
     85	int level;
     86	int size;
     87	int nr_disks;
     88	int raid_disks;
     89	int md_minor;
     90	int not_persistent;
     91
     92	/*
     93	 * Generic state information
     94	 */
     95	unsigned int utime;	/*  0 Superblock update time		      */
     96	int state;		/*  1 State bits (clean, ...)		      */
     97	int active_disks;	/*  2 Number of currently active disks	      */
     98	int working_disks;	/*  3 Number of working disks		      */
     99	int failed_disks;	/*  4 Number of failed disks		      */
    100	int spare_disks;	/*  5 Number of spare disks		      */
    101
    102	/*
    103	 * Personality information
    104	 */
    105	int layout;		/*  0 the array's physical layout	      */
    106	int chunk_size;	/*  1 chunk size in bytes		      */
    107
    108} mdu_array_info_t;
    109
    110/* non-obvious values for 'level' */
    111#define	LEVEL_MULTIPATH		(-4)
    112#define	LEVEL_LINEAR		(-1)
    113#define	LEVEL_FAULTY		(-5)
    114
    115/* we need a value for 'no level specified' and 0
    116 * means 'raid0', so we need something else.  This is
    117 * for internal use only
    118 */
    119#define	LEVEL_NONE		(-1000000)
    120
    121typedef struct mdu_disk_info_s {
    122	/*
    123	 * configuration/status of one particular disk
    124	 */
    125	int number;
    126	int major;
    127	int minor;
    128	int raid_disk;
    129	int state;
    130
    131} mdu_disk_info_t;
    132
    133typedef struct mdu_start_info_s {
    134	/*
    135	 * configuration/status of one particular disk
    136	 */
    137	int major;
    138	int minor;
    139	int raid_disk;
    140	int state;
    141
    142} mdu_start_info_t;
    143
    144typedef struct mdu_bitmap_file_s
    145{
    146	char pathname[4096];
    147} mdu_bitmap_file_t;
    148
    149typedef struct mdu_param_s
    150{
    151	int			personality;	/* 1,2,3,4 */
    152	int			chunk_size;	/* in bytes */
    153	int			max_fault;	/* unused for now */
    154} mdu_param_t;
    155
    156#endif /* _UAPI_MD_U_H */