Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | md.h : Multiple Devices driver for Linux |
| 3 | Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman |
| 4 | Copyright (C) 1994-96 Marc ZYNGIER |
| 5 | <zyngier@ufr-info-p7.ibp.fr> or |
| 6 | <maz@gloups.fdn.fr> |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | You should have received a copy of the GNU General Public License |
| 14 | (for example /usr/src/linux/COPYING); if not, write to the Free |
| 15 | Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 16 | */ |
| 17 | |
| 18 | #ifndef _MD_H |
| 19 | #define _MD_H |
| 20 | |
| 21 | #include <linux/blkdev.h> |
| 22 | #include <asm/semaphore.h> |
| 23 | #include <linux/major.h> |
| 24 | #include <linux/ioctl.h> |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/bitops.h> |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/hdreg.h> |
| 29 | #include <linux/proc_fs.h> |
| 30 | #include <linux/seq_file.h> |
| 31 | #include <linux/smp_lock.h> |
| 32 | #include <linux/delay.h> |
| 33 | #include <net/checksum.h> |
| 34 | #include <linux/random.h> |
| 35 | #include <linux/kernel_stat.h> |
| 36 | #include <asm/io.h> |
| 37 | #include <linux/completion.h> |
| 38 | #include <linux/mempool.h> |
| 39 | #include <linux/list.h> |
| 40 | #include <linux/reboot.h> |
| 41 | #include <linux/vmalloc.h> |
| 42 | #include <linux/blkpg.h> |
| 43 | #include <linux/bio.h> |
| 44 | |
| 45 | /* |
| 46 | * 'md_p.h' holds the 'physical' layout of RAID devices |
| 47 | * 'md_u.h' holds the user <=> kernel API |
| 48 | * |
| 49 | * 'md_k.h' holds kernel internal definitions |
| 50 | */ |
| 51 | |
| 52 | #include <linux/raid/md_p.h> |
| 53 | #include <linux/raid/md_u.h> |
| 54 | #include <linux/raid/md_k.h> |
| 55 | |
| 56 | /* |
| 57 | * Different major versions are not compatible. |
| 58 | * Different minor versions are only downward compatible. |
| 59 | * Different patchlevel versions are downward and upward compatible. |
| 60 | */ |
| 61 | #define MD_MAJOR_VERSION 0 |
| 62 | #define MD_MINOR_VERSION 90 |
NeilBrown | a654b9d8 | 2005-06-21 17:17:27 -0700 | [diff] [blame] | 63 | /* |
| 64 | * MD_PATCHLEVEL_VERSION indicates kernel functionality. |
| 65 | * >=1 means different superblock formats are selectable using SET_ARRAY_INFO |
| 66 | * and major_version/minor_version accordingly |
| 67 | * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT |
| 68 | * in the super status byte |
NeilBrown | bd926c6 | 2005-11-08 21:39:32 -0800 | [diff] [blame] | 69 | * >=3 means that bitmap superblock version 4 is supported, which uses |
| 70 | * little-ending representation rather than host-endian |
NeilBrown | a654b9d8 | 2005-06-21 17:17:27 -0700 | [diff] [blame] | 71 | */ |
NeilBrown | bd926c6 | 2005-11-08 21:39:32 -0800 | [diff] [blame] | 72 | #define MD_PATCHLEVEL_VERSION 3 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
NeilBrown | 2604b70 | 2006-01-06 00:20:36 -0800 | [diff] [blame] | 74 | extern int register_md_personality (struct mdk_personality *p); |
| 75 | extern int unregister_md_personality (struct mdk_personality *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | extern mdk_thread_t * md_register_thread (void (*run) (mddev_t *mddev), |
| 77 | mddev_t *mddev, const char *name); |
| 78 | extern void md_unregister_thread (mdk_thread_t *thread); |
| 79 | extern void md_wakeup_thread(mdk_thread_t *thread); |
| 80 | extern void md_check_recovery(mddev_t *mddev); |
NeilBrown | 3d310eb | 2005-06-21 17:17:26 -0700 | [diff] [blame] | 81 | extern void md_write_start(mddev_t *mddev, struct bio *bi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | extern void md_write_end(mddev_t *mddev); |
| 83 | extern void md_handle_safemode(mddev_t *mddev); |
| 84 | extern void md_done_sync(mddev_t *mddev, int blocks, int ok); |
| 85 | extern void md_error (mddev_t *mddev, mdk_rdev_t *rdev); |
| 86 | extern void md_unplug_mddev(mddev_t *mddev); |
| 87 | |
NeilBrown | a654b9d8 | 2005-06-21 17:17:27 -0700 | [diff] [blame] | 88 | extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev, |
| 89 | sector_t sector, int size, struct page *page); |
NeilBrown | a9701a3 | 2005-11-08 21:39:34 -0800 | [diff] [blame] | 90 | extern void md_super_wait(mddev_t *mddev); |
NeilBrown | a654b9d8 | 2005-06-21 17:17:27 -0700 | [diff] [blame] | 91 | extern int sync_page_io(struct block_device *bdev, sector_t sector, int size, |
| 92 | struct page *page, int rw); |
NeilBrown | 2926955 | 2006-03-27 01:18:10 -0800 | [diff] [blame] | 93 | extern void md_do_sync(mddev_t *mddev); |
| 94 | extern void md_new_event(mddev_t *mddev); |
NeilBrown | a654b9d8 | 2005-06-21 17:17:27 -0700 | [diff] [blame] | 95 | |
NeilBrown | f670557 | 2006-03-27 01:18:11 -0800 | [diff] [blame] | 96 | extern void md_update_sb(mddev_t * mddev); |
| 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | #endif |
| 99 | |