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-rw-r--r--include/linux/raid/linear.h32
-rw-r--r--include/linux/raid/md.h94
-rw-r--r--include/linux/raid/md_compatible.h160
-rw-r--r--include/linux/raid/md_k.h341
-rw-r--r--include/linux/raid/md_p.h161
-rw-r--r--include/linux/raid/md_u.h115
-rw-r--r--include/linux/raid/raid0.h33
7 files changed, 936 insertions, 0 deletions
diff --git a/include/linux/raid/linear.h b/include/linux/raid/linear.h
new file mode 100644
index 000000000..55cfab78f
--- /dev/null
+++ b/include/linux/raid/linear.h
@@ -0,0 +1,32 @@
+#ifndef _LINEAR_H
+#define _LINEAR_H
+
+#include <linux/raid/md.h>
+
+struct dev_info {
+ kdev_t dev;
+ int size;
+ unsigned int offset;
+};
+
+typedef struct dev_info dev_info_t;
+
+struct linear_hash
+{
+ dev_info_t *dev0, *dev1;
+};
+
+struct linear_private_data
+{
+ struct linear_hash *hash_table;
+ dev_info_t disks[MD_SB_DISKS];
+ dev_info_t *smallest;
+ int nr_zones;
+};
+
+
+typedef struct linear_private_data linear_conf_t;
+
+#define mddev_to_conf(mddev) ((linear_conf_t *) mddev->private)
+
+#endif
diff --git a/include/linux/raid/md.h b/include/linux/raid/md.h
new file mode 100644
index 000000000..cabc0a8be
--- /dev/null
+++ b/include/linux/raid/md.h
@@ -0,0 +1,94 @@
+/*
+ md.h : Multiple Devices driver for Linux
+ Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
+ Copyright (C) 1994-96 Marc ZYNGIER
+ <zyngier@ufr-info-p7.ibp.fr> or
+ <maz@gloups.fdn.fr>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ You should have received a copy of the GNU General Public License
+ (for example /usr/src/linux/COPYING); if not, write to the Free
+ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef _MD_H
+#define _MD_H
+
+#include <linux/mm.h>
+#include <linux/config.h>
+#include <linux/fs.h>
+#include <linux/blkdev.h>
+#include <asm/semaphore.h>
+#include <linux/major.h>
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <asm/bitops.h>
+#include <linux/module.h>
+#include <linux/hdreg.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+#include <linux/smp_lock.h>
+#include <linux/delay.h>
+#include <net/checksum.h>
+#include <linux/random.h>
+#include <linux/locks.h>
+#include <asm/io.h>
+
+#include <linux/raid/md_compatible.h>
+/*
+ * 'md_p.h' holds the 'physical' layout of RAID devices
+ * 'md_u.h' holds the user <=> kernel API
+ *
+ * 'md_k.h' holds kernel internal definitions
+ */
+
+#include <linux/raid/md_p.h>
+#include <linux/raid/md_u.h>
+#include <linux/raid/md_k.h>
+
+/*
+ * Different major versions are not compatible.
+ * Different minor versions are only downward compatible.
+ * Different patchlevel versions are downward and upward compatible.
+ */
+#define MD_MAJOR_VERSION 0
+#define MD_MINOR_VERSION 90
+#define MD_PATCHLEVEL_VERSION 0
+
+extern int md_size[MAX_MD_DEVS];
+extern struct hd_struct md_hd_struct[MAX_MD_DEVS];
+
+extern void add_mddev_mapping (mddev_t *mddev, kdev_t dev, void *data);
+extern void del_mddev_mapping (mddev_t *mddev, kdev_t dev);
+extern char * partition_name (kdev_t dev);
+extern int register_md_personality (int p_num, mdk_personality_t *p);
+extern int unregister_md_personality (int p_num);
+extern mdk_thread_t * md_register_thread (void (*run) (void *data),
+ void *data, const char *name);
+extern void md_unregister_thread (mdk_thread_t *thread);
+extern void md_wakeup_thread(mdk_thread_t *thread);
+extern void md_interrupt_thread (mdk_thread_t *thread);
+extern int md_update_sb (mddev_t *mddev);
+extern int md_do_sync(mddev_t *mddev, mdp_disk_t *spare);
+extern void md_recover_arrays (void);
+extern int md_check_ordering (mddev_t *mddev);
+extern void autodetect_raid(void);
+extern struct gendisk * find_gendisk (kdev_t dev);
+extern int md_notify_reboot(struct notifier_block *this,
+ unsigned long code, void *x);
+extern int md_error (kdev_t mddev, kdev_t rdev);
+
+#if CONFIG_BLK_DEV_MD
+extern void raid_setup(char *str,int *ints) md__init;
+#endif
+
+extern void md_print_devices (void);
+
+#define MD_BUG(x...) { printk("md: bug in file %s, line %d\n", __FILE__, __LINE__); md_print_devices(); }
+
+#endif _MD_H
+
diff --git a/include/linux/raid/md_compatible.h b/include/linux/raid/md_compatible.h
new file mode 100644
index 000000000..fbeac31a1
--- /dev/null
+++ b/include/linux/raid/md_compatible.h
@@ -0,0 +1,160 @@
+
+/*
+ md.h : Multiple Devices driver compatibility layer for Linux 2.0/2.2
+ Copyright (C) 1998 Ingo Molnar
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ You should have received a copy of the GNU General Public License
+ (for example /usr/src/linux/COPYING); if not, write to the Free
+ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/version.h>
+
+#ifndef _MD_COMPATIBLE_H
+#define _MD_COMPATIBLE_H
+
+/** 2.3/2.4 stuff: **/
+
+#include <linux/reboot.h>
+#include <linux/vmalloc.h>
+#include <linux/blkpg.h>
+
+/* 000 */
+#define md__get_free_pages(x,y) __get_free_pages(x,y)
+
+#ifdef __i386__
+/* 001 */
+extern __inline__ int md_cpu_has_mmx(void)
+{
+ return boot_cpu_data.x86_capability & X86_FEATURE_MMX;
+}
+#endif
+
+/* 002 */
+#define md_clear_page(page) clear_page(page)
+
+/* 003 */
+#define MD_EXPORT_SYMBOL(x) EXPORT_SYMBOL(x)
+
+/* 004 */
+#define md_copy_to_user(x,y,z) copy_to_user(x,y,z)
+
+/* 005 */
+#define md_copy_from_user(x,y,z) copy_from_user(x,y,z)
+
+/* 006 */
+#define md_put_user put_user
+
+/* 007 */
+extern inline int md_capable_admin(void)
+{
+ return capable(CAP_SYS_ADMIN);
+}
+
+/* 008 */
+#define MD_FILE_TO_INODE(file) ((file)->f_dentry->d_inode)
+
+/* 009 */
+extern inline void md_flush_signals (void)
+{
+ spin_lock(&current->sigmask_lock);
+ flush_signals(current);
+ spin_unlock(&current->sigmask_lock);
+}
+
+/* 010 */
+extern inline void md_init_signals (void)
+{
+ current->exit_signal = SIGCHLD;
+ siginitsetinv(&current->blocked, sigmask(SIGKILL));
+}
+
+/* 011 */
+#define md_signal_pending signal_pending
+
+/* 012 */
+extern inline void md_set_global_readahead(int * table)
+{
+ max_readahead[MD_MAJOR] = table;
+}
+
+/* 013 */
+#define md_mdelay(x) mdelay(x)
+
+/* 014 */
+#define MD_SYS_DOWN SYS_DOWN
+#define MD_SYS_HALT SYS_HALT
+#define MD_SYS_POWER_OFF SYS_POWER_OFF
+
+/* 015 */
+#define md_register_reboot_notifier register_reboot_notifier
+
+/* 016 */
+#define md_test_and_set_bit test_and_set_bit
+
+/* 017 */
+#define md_test_and_clear_bit test_and_clear_bit
+
+/* 018 */
+#define md_atomic_read atomic_read
+#define md_atomic_set atomic_set
+
+/* 019 */
+#define md_lock_kernel lock_kernel
+#define md_unlock_kernel unlock_kernel
+
+/* 020 */
+
+#include <linux/init.h>
+
+#define md__init __init
+#define md__initdata __initdata
+#define md__initfunc(__arginit) __initfunc(__arginit)
+
+/* 021 */
+
+
+/* 022 */
+
+#define md_list_head list_head
+#define MD_LIST_HEAD(name) LIST_HEAD(name)
+#define MD_INIT_LIST_HEAD(ptr) INIT_LIST_HEAD(ptr)
+#define md_list_add list_add
+#define md_list_del list_del
+#define md_list_empty list_empty
+
+#define md_list_entry(ptr, type, member) list_entry(ptr, type, member)
+
+/* 023 */
+
+#define md_schedule_timeout schedule_timeout
+
+/* 024 */
+#define md_need_resched(tsk) ((tsk)->need_resched)
+
+/* 025 */
+#define md_spinlock_t spinlock_t
+#define MD_SPIN_LOCK_UNLOCKED SPIN_LOCK_UNLOCKED
+
+#define md_spin_lock spin_lock
+#define md_spin_unlock spin_unlock
+#define md_spin_lock_irq spin_lock_irq
+#define md_spin_unlock_irq spin_unlock_irq
+#define md_spin_unlock_irqrestore spin_unlock_irqrestore
+#define md_spin_lock_irqsave spin_lock_irqsave
+
+/* 026 */
+typedef wait_queue_head_t md_wait_queue_head_t;
+#define MD_DECLARE_WAITQUEUE(w,t) DECLARE_WAITQUEUE((w),(t))
+#define MD_DECLARE_WAIT_QUEUE_HEAD(x) DECLARE_WAIT_QUEUE_HEAD(x)
+#define md_init_waitqueue_head init_waitqueue_head
+
+/* END */
+
+#endif _MD_COMPATIBLE_H
+
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
new file mode 100644
index 000000000..d00563357
--- /dev/null
+++ b/include/linux/raid/md_k.h
@@ -0,0 +1,341 @@
+/*
+ md_k.h : kernel internal structure of the Linux MD driver
+ Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ You should have received a copy of the GNU General Public License
+ (for example /usr/src/linux/COPYING); if not, write to the Free
+ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef _MD_K_H
+#define _MD_K_H
+
+#define MD_RESERVED 0UL
+#define LINEAR 1UL
+#define STRIPED 2UL
+#define RAID0 STRIPED
+#define RAID1 3UL
+#define RAID5 4UL
+#define TRANSLUCENT 5UL
+#define HSM 6UL
+#define MAX_PERSONALITY 7UL
+
+extern inline int pers_to_level (int pers)
+{
+ switch (pers) {
+ case HSM: return -3;
+ case TRANSLUCENT: return -2;
+ case LINEAR: return -1;
+ case RAID0: return 0;
+ case RAID1: return 1;
+ case RAID5: return 5;
+ }
+ panic("pers_to_level()");
+}
+
+extern inline int level_to_pers (int level)
+{
+ switch (level) {
+ case -3: return HSM;
+ case -2: return TRANSLUCENT;
+ case -1: return LINEAR;
+ case 0: return RAID0;
+ case 1: return RAID1;
+ case 4:
+ case 5: return RAID5;
+ }
+ return MD_RESERVED;
+}
+
+typedef struct mddev_s mddev_t;
+typedef struct mdk_rdev_s mdk_rdev_t;
+
+#if (MINORBITS != 8)
+#error MD doesnt handle bigger kdev yet
+#endif
+
+#define MAX_REAL 12 /* Max number of disks per md dev */
+#define MAX_MD_DEVS (1<<MINORBITS) /* Max number of md dev */
+
+/*
+ * Maps a kdev to an mddev/subdev. How 'data' is handled is up to
+ * the personality. (eg. HSM uses this to identify individual LVs)
+ */
+typedef struct dev_mapping_s {
+ mddev_t *mddev;
+ void *data;
+} dev_mapping_t;
+
+extern dev_mapping_t mddev_map [MAX_MD_DEVS];
+
+extern inline mddev_t * kdev_to_mddev (kdev_t dev)
+{
+ return mddev_map[MINOR(dev)].mddev;
+}
+
+/*
+ * options passed in raidrun:
+ */
+
+#define MAX_CHUNK_SIZE (4096*1024)
+
+/*
+ * default readahead
+ */
+#define MD_READAHEAD (256 * 512)
+
+extern inline int disk_faulty(mdp_disk_t * d)
+{
+ return d->state & (1 << MD_DISK_FAULTY);
+}
+
+extern inline int disk_active(mdp_disk_t * d)
+{
+ return d->state & (1 << MD_DISK_ACTIVE);
+}
+
+extern inline int disk_sync(mdp_disk_t * d)
+{
+ return d->state & (1 << MD_DISK_SYNC);
+}
+
+extern inline int disk_spare(mdp_disk_t * d)
+{
+ return !disk_sync(d) && !disk_active(d) && !disk_faulty(d);
+}
+
+extern inline int disk_removed(mdp_disk_t * d)
+{
+ return d->state & (1 << MD_DISK_REMOVED);
+}
+
+extern inline void mark_disk_faulty(mdp_disk_t * d)
+{
+ d->state |= (1 << MD_DISK_FAULTY);
+}
+
+extern inline void mark_disk_active(mdp_disk_t * d)
+{
+ d->state |= (1 << MD_DISK_ACTIVE);
+}
+
+extern inline void mark_disk_sync(mdp_disk_t * d)
+{
+ d->state |= (1 << MD_DISK_SYNC);
+}
+
+extern inline void mark_disk_spare(mdp_disk_t * d)
+{
+ d->state = 0;
+}
+
+extern inline void mark_disk_removed(mdp_disk_t * d)
+{
+ d->state = (1 << MD_DISK_FAULTY) | (1 << MD_DISK_REMOVED);
+}
+
+extern inline void mark_disk_inactive(mdp_disk_t * d)
+{
+ d->state &= ~(1 << MD_DISK_ACTIVE);
+}
+
+extern inline void mark_disk_nonsync(mdp_disk_t * d)
+{
+ d->state &= ~(1 << MD_DISK_SYNC);
+}
+
+/*
+ * MD's 'extended' device
+ */
+struct mdk_rdev_s
+{
+ struct md_list_head same_set; /* RAID devices within the same set */
+ struct md_list_head all; /* all RAID devices */
+ struct md_list_head pending; /* undetected RAID devices */
+
+ kdev_t dev; /* Device number */
+ kdev_t old_dev; /* "" when it was last imported */
+ int size; /* Device size (in blocks) */
+ mddev_t *mddev; /* RAID array if running */
+ unsigned long last_events; /* IO event timestamp */
+
+ struct inode *inode; /* Lock inode */
+ struct file filp; /* Lock file */
+
+ mdp_super_t *sb;
+ int sb_offset;
+
+ int faulty; /* if faulty do not issue IO requests */
+ int desc_nr; /* descriptor index in the superblock */
+};
+
+
+/*
+ * disk operations in a working array:
+ */
+#define DISKOP_SPARE_INACTIVE 0
+#define DISKOP_SPARE_WRITE 1
+#define DISKOP_SPARE_ACTIVE 2
+#define DISKOP_HOT_REMOVE_DISK 3
+#define DISKOP_HOT_ADD_DISK 4
+
+typedef struct mdk_personality_s mdk_personality_t;
+
+struct mddev_s
+{
+ void *private;
+ mdk_personality_t *pers;
+ int __minor;
+ mdp_super_t *sb;
+ int nb_dev;
+ struct md_list_head disks;
+ int sb_dirty;
+ mdu_param_t param;
+ int ro;
+ unsigned int curr_resync;
+ unsigned long resync_start;
+ char *name;
+ int recovery_running;
+ struct semaphore reconfig_sem;
+ struct semaphore recovery_sem;
+ struct semaphore resync_sem;
+ struct md_list_head all_mddevs;
+ request_queue_t queue;
+};
+
+struct mdk_personality_s
+{
+ char *name;
+ int (*map)(mddev_t *mddev, kdev_t dev, kdev_t *rdev,
+ unsigned long *rsector, unsigned long size);
+ int (*make_request)(mddev_t *mddev, int rw, struct buffer_head * bh);
+ void (*end_request)(struct buffer_head * bh, int uptodate);
+ int (*run)(mddev_t *mddev);
+ int (*stop)(mddev_t *mddev);
+ int (*status)(char *page, mddev_t *mddev);
+ int (*ioctl)(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg);
+ int max_invalid_dev;
+ int (*error_handler)(mddev_t *mddev, kdev_t dev);
+
+/*
+ * Some personalities (RAID-1, RAID-5) can have disks hot-added and
+ * hot-removed. Hot removal is different from failure. (failure marks
+ * a disk inactive, but the disk is still part of the array) The interface
+ * to such operations is the 'pers->diskop()' function, can be NULL.
+ *
+ * the diskop function can change the pointer pointing to the incoming
+ * descriptor, but must do so very carefully. (currently only
+ * SPARE_ACTIVE expects such a change)
+ */
+ int (*diskop) (mddev_t *mddev, mdp_disk_t **descriptor, int state);
+
+ int (*stop_resync)(mddev_t *mddev);
+ int (*restart_resync)(mddev_t *mddev);
+};
+
+
+/*
+ * Currently we index md_array directly, based on the minor
+ * number. This will have to change to dynamic allocation
+ * once we start supporting partitioning of md devices.
+ */
+extern inline int mdidx (mddev_t * mddev)
+{
+ return mddev->__minor;
+}
+
+extern inline kdev_t mddev_to_kdev(mddev_t * mddev)
+{
+ return MKDEV(MD_MAJOR, mdidx(mddev));
+}
+
+extern mdk_rdev_t * find_rdev(mddev_t * mddev, kdev_t dev);
+extern mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr);
+
+/*
+ * iterates through some rdev ringlist. It's safe to remove the
+ * current 'rdev'. Dont touch 'tmp' though.
+ */
+#define ITERATE_RDEV_GENERIC(head,field,rdev,tmp) \
+ \
+ for (tmp = head.next; \
+ rdev = md_list_entry(tmp, mdk_rdev_t, field), \
+ tmp = tmp->next, tmp->prev != &head \
+ ; )
+/*
+ * iterates through the 'same array disks' ringlist
+ */
+#define ITERATE_RDEV(mddev,rdev,tmp) \
+ ITERATE_RDEV_GENERIC((mddev)->disks,same_set,rdev,tmp)
+
+/*
+ * Same as above, but assumes that the device has rdev->desc_nr numbered
+ * from 0 to mddev->nb_dev, and iterates through rdevs in ascending order.
+ */
+#define ITERATE_RDEV_ORDERED(mddev,rdev,i) \
+ for (i = 0; rdev = find_rdev_nr(mddev, i), i < mddev->nb_dev; i++)
+
+
+/*
+ * Iterates through all 'RAID managed disks'
+ */
+#define ITERATE_RDEV_ALL(rdev,tmp) \
+ ITERATE_RDEV_GENERIC(all_raid_disks,all,rdev,tmp)
+
+/*
+ * Iterates through 'pending RAID disks'
+ */
+#define ITERATE_RDEV_PENDING(rdev,tmp) \
+ ITERATE_RDEV_GENERIC(pending_raid_disks,pending,rdev,tmp)
+
+/*
+ * iterates through all used mddevs in the system.
+ */
+#define ITERATE_MDDEV(mddev,tmp) \
+ \
+ for (tmp = all_mddevs.next; \
+ mddev = md_list_entry(tmp, mddev_t, all_mddevs), \
+ tmp = tmp->next, tmp->prev != &all_mddevs \
+ ; )
+
+extern inline int lock_mddev (mddev_t * mddev)
+{
+ return down_interruptible(&mddev->reconfig_sem);
+}
+
+extern inline void unlock_mddev (mddev_t * mddev)
+{
+ up(&mddev->reconfig_sem);
+}
+
+#define xchg_values(x,y) do { __typeof__(x) __tmp = x; \
+ x = y; y = __tmp; } while (0)
+
+typedef struct mdk_thread_s {
+ void (*run) (void *data);
+ void *data;
+ md_wait_queue_head_t wqueue;
+ unsigned long flags;
+ struct semaphore *sem;
+ struct task_struct *tsk;
+ const char *name;
+} mdk_thread_t;
+
+#define THREAD_WAKEUP 0
+
+#define MAX_DISKNAME_LEN 32
+
+typedef struct dev_name_s {
+ struct md_list_head list;
+ kdev_t dev;
+ char name [MAX_DISKNAME_LEN];
+} dev_name_t;
+
+#endif _MD_K_H
+
diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h
new file mode 100644
index 000000000..1b9632c14
--- /dev/null
+++ b/include/linux/raid/md_p.h
@@ -0,0 +1,161 @@
+/*
+ md_p.h : physical layout of Linux RAID devices
+ Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ You should have received a copy of the GNU General Public License
+ (for example /usr/src/linux/COPYING); if not, write to the Free
+ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef _MD_P_H
+#define _MD_P_H
+
+/*
+ * RAID superblock.
+ *
+ * The RAID superblock maintains some statistics on each RAID configuration.
+ * Each real device in the RAID set contains it near the end of the device.
+ * Some of the ideas are copied from the ext2fs implementation.
+ *
+ * We currently use 4096 bytes as follows:
+ *
+ * word offset function
+ *
+ * 0 - 31 Constant generic RAID device information.
+ * 32 - 63 Generic state information.
+ * 64 - 127 Personality specific information.
+ * 128 - 511 12 32-words descriptors of the disks in the raid set.
+ * 512 - 911 Reserved.
+ * 912 - 1023 Disk specific descriptor.
+ */
+
+/*
+ * If x is the real device size in bytes, we return an apparent size of:
+ *
+ * y = (x & ~(MD_RESERVED_BYTES - 1)) - MD_RESERVED_BYTES
+ *
+ * and place the 4kB superblock at offset y.
+ */
+#define MD_RESERVED_BYTES (64 * 1024)
+#define MD_RESERVED_SECTORS (MD_RESERVED_BYTES / 512)
+#define MD_RESERVED_BLOCKS (MD_RESERVED_BYTES / BLOCK_SIZE)
+
+#define MD_NEW_SIZE_SECTORS(x) ((x & ~(MD_RESERVED_SECTORS - 1)) - MD_RESERVED_SECTORS)
+#define MD_NEW_SIZE_BLOCKS(x) ((x & ~(MD_RESERVED_BLOCKS - 1)) - MD_RESERVED_BLOCKS)
+
+#define MD_SB_BYTES 4096
+#define MD_SB_WORDS (MD_SB_BYTES / 4)
+#define MD_SB_BLOCKS (MD_SB_BYTES / BLOCK_SIZE)
+#define MD_SB_SECTORS (MD_SB_BYTES / 512)
+
+/*
+ * The following are counted in 32-bit words
+ */
+#define MD_SB_GENERIC_OFFSET 0
+#define MD_SB_PERSONALITY_OFFSET 64
+#define MD_SB_DISKS_OFFSET 128
+#define MD_SB_DESCRIPTOR_OFFSET 992
+
+#define MD_SB_GENERIC_CONSTANT_WORDS 32
+#define MD_SB_GENERIC_STATE_WORDS 32
+#define MD_SB_GENERIC_WORDS (MD_SB_GENERIC_CONSTANT_WORDS + MD_SB_GENERIC_STATE_WORDS)
+#define MD_SB_PERSONALITY_WORDS 64
+#define MD_SB_DESCRIPTOR_WORDS 32
+#define MD_SB_DISKS 27
+#define MD_SB_DISKS_WORDS (MD_SB_DISKS*MD_SB_DESCRIPTOR_WORDS)
+#define MD_SB_RESERVED_WORDS (1024 - MD_SB_GENERIC_WORDS - MD_SB_PERSONALITY_WORDS - MD_SB_DISKS_WORDS - MD_SB_DESCRIPTOR_WORDS)
+#define MD_SB_EQUAL_WORDS (MD_SB_GENERIC_WORDS + MD_SB_PERSONALITY_WORDS + MD_SB_DISKS_WORDS)
+
+/*
+ * Device "operational" state bits
+ */
+#define MD_DISK_FAULTY 0 /* disk is faulty / operational */
+#define MD_DISK_ACTIVE 1 /* disk is running or spare disk */
+#define MD_DISK_SYNC 2 /* disk is in sync with the raid set */
+#define MD_DISK_REMOVED 3 /* disk is in sync with the raid set */
+
+typedef struct mdp_device_descriptor_s {
+ __u32 number; /* 0 Device number in the entire set */
+ __u32 major; /* 1 Device major number */
+ __u32 minor; /* 2 Device minor number */
+ __u32 raid_disk; /* 3 The role of the device in the raid set */
+ __u32 state; /* 4 Operational state */
+ __u32 reserved[MD_SB_DESCRIPTOR_WORDS - 5];
+} mdp_disk_t;
+
+#define MD_SB_MAGIC 0xa92b4efc
+
+/*
+ * Superblock state bits
+ */
+#define MD_SB_CLEAN 0
+#define MD_SB_ERRORS 1
+
+typedef struct mdp_superblock_s {
+ /*
+ * Constant generic information
+ */
+ __u32 md_magic; /* 0 MD identifier */
+ __u32 major_version; /* 1 major version to which the set conforms */
+ __u32 minor_version; /* 2 minor version ... */
+ __u32 patch_version; /* 3 patchlevel version ... */
+ __u32 gvalid_words; /* 4 Number of used words in this section */
+ __u32 set_uuid0; /* 5 Raid set identifier */
+ __u32 ctime; /* 6 Creation time */
+ __u32 level; /* 7 Raid personality */
+ __u32 size; /* 8 Apparent size of each individual disk */
+ __u32 nr_disks; /* 9 total disks in the raid set */
+ __u32 raid_disks; /* 10 disks in a fully functional raid set */
+ __u32 md_minor; /* 11 preferred MD minor device number */
+ __u32 not_persistent; /* 12 does it have a persistent superblock */
+ __u32 set_uuid1; /* 13 Raid set identifier #2 */
+ __u32 set_uuid2; /* 14 Raid set identifier #3 */
+ __u32 set_uuid3; /* 14 Raid set identifier #4 */
+ __u32 gstate_creserved[MD_SB_GENERIC_CONSTANT_WORDS - 16];
+
+ /*
+ * Generic state information
+ */
+ __u32 utime; /* 0 Superblock update time */
+ __u32 state; /* 1 State bits (clean, ...) */
+ __u32 active_disks; /* 2 Number of currently active disks */
+ __u32 working_disks; /* 3 Number of working disks */
+ __u32 failed_disks; /* 4 Number of failed disks */
+ __u32 spare_disks; /* 5 Number of spare disks */
+ __u32 sb_csum; /* 6 checksum of the whole superblock */
+ __u64 events; /* 7 number of superblock updates (64-bit!) */
+ __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 9];
+
+ /*
+ * Personality information
+ */
+ __u32 layout; /* 0 the array's physical layout */
+ __u32 chunk_size; /* 1 chunk size in bytes */
+ __u32 root_pv; /* 2 LV root PV */
+ __u32 root_block; /* 3 LV root block */
+ __u32 pstate_reserved[MD_SB_PERSONALITY_WORDS - 4];
+
+ /*
+ * Disks information
+ */
+ mdp_disk_t disks[MD_SB_DISKS];
+
+ /*
+ * Reserved
+ */
+ __u32 reserved[MD_SB_RESERVED_WORDS];
+
+ /*
+ * Active descriptor
+ */
+ mdp_disk_t this_disk;
+
+} mdp_super_t;
+
+#endif _MD_P_H
+
diff --git a/include/linux/raid/md_u.h b/include/linux/raid/md_u.h
new file mode 100644
index 000000000..9478513f9
--- /dev/null
+++ b/include/linux/raid/md_u.h
@@ -0,0 +1,115 @@
+/*
+ md_u.h : user <=> kernel API between Linux raidtools and RAID drivers
+ Copyright (C) 1998 Ingo Molnar
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ You should have received a copy of the GNU General Public License
+ (for example /usr/src/linux/COPYING); if not, write to the Free
+ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef _MD_U_H
+#define _MD_U_H
+
+/* ioctls */
+
+/* status */
+#define RAID_VERSION _IOR (MD_MAJOR, 0x10, mdu_version_t)
+#define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, mdu_array_info_t)
+#define GET_DISK_INFO _IOR (MD_MAJOR, 0x12, mdu_disk_info_t)
+#define PRINT_RAID_DEBUG _IO (MD_MAJOR, 0x13)
+
+/* configuration */
+#define CLEAR_ARRAY _IO (MD_MAJOR, 0x20)
+#define ADD_NEW_DISK _IOW (MD_MAJOR, 0x21, mdu_disk_info_t)
+#define HOT_REMOVE_DISK _IO (MD_MAJOR, 0x22)
+#define SET_ARRAY_INFO _IOW (MD_MAJOR, 0x23, mdu_array_info_t)
+#define SET_DISK_INFO _IO (MD_MAJOR, 0x24)
+#define WRITE_RAID_INFO _IO (MD_MAJOR, 0x25)
+#define UNPROTECT_ARRAY _IO (MD_MAJOR, 0x26)
+#define PROTECT_ARRAY _IO (MD_MAJOR, 0x27)
+#define HOT_ADD_DISK _IO (MD_MAJOR, 0x28)
+#define SET_DISK_FAULTY _IO (MD_MAJOR, 0x29)
+
+/* usage */
+#define RUN_ARRAY _IOW (MD_MAJOR, 0x30, mdu_param_t)
+#define START_ARRAY _IO (MD_MAJOR, 0x31)
+#define STOP_ARRAY _IO (MD_MAJOR, 0x32)
+#define STOP_ARRAY_RO _IO (MD_MAJOR, 0x33)
+#define RESTART_ARRAY_RW _IO (MD_MAJOR, 0x34)
+
+typedef struct mdu_version_s {
+ int major;
+ int minor;
+ int patchlevel;
+} mdu_version_t;
+
+typedef struct mdu_array_info_s {
+ /*
+ * Generic constant information
+ */
+ int major_version;
+ int minor_version;
+ int patch_version;
+ int ctime;
+ int level;
+ int size;
+ int nr_disks;
+ int raid_disks;
+ int md_minor;
+ int not_persistent;
+
+ /*
+ * Generic state information
+ */
+ int utime; /* 0 Superblock update time */
+ int state; /* 1 State bits (clean, ...) */
+ int active_disks; /* 2 Number of currently active disks */
+ int working_disks; /* 3 Number of working disks */
+ int failed_disks; /* 4 Number of failed disks */
+ int spare_disks; /* 5 Number of spare disks */
+
+ /*
+ * Personality information
+ */
+ int layout; /* 0 the array's physical layout */
+ int chunk_size; /* 1 chunk size in bytes */
+
+} mdu_array_info_t;
+
+typedef struct mdu_disk_info_s {
+ /*
+ * configuration/status of one particular disk
+ */
+ int number;
+ int major;
+ int minor;
+ int raid_disk;
+ int state;
+
+} mdu_disk_info_t;
+
+typedef struct mdu_start_info_s {
+ /*
+ * configuration/status of one particular disk
+ */
+ int major;
+ int minor;
+ int raid_disk;
+ int state;
+
+} mdu_start_info_t;
+
+typedef struct mdu_param_s
+{
+ int personality; /* 1,2,3,4 */
+ int chunk_size; /* in bytes */
+ int max_fault; /* unused for now */
+} mdu_param_t;
+
+#endif _MD_U_H
+
diff --git a/include/linux/raid/raid0.h b/include/linux/raid/raid0.h
new file mode 100644
index 000000000..3ea74db60
--- /dev/null
+++ b/include/linux/raid/raid0.h
@@ -0,0 +1,33 @@
+#ifndef _RAID0_H
+#define _RAID0_H
+
+#include <linux/raid/md.h>
+
+struct strip_zone
+{
+ int zone_offset; /* Zone offset in md_dev */
+ int dev_offset; /* Zone offset in real dev */
+ int size; /* Zone size */
+ int nb_dev; /* # of devices attached to the zone */
+ mdk_rdev_t *dev[MAX_REAL]; /* Devices attached to the zone */
+};
+
+struct raid0_hash
+{
+ struct strip_zone *zone0, *zone1;
+};
+
+struct raid0_private_data
+{
+ struct raid0_hash *hash_table; /* Dynamically allocated */
+ struct strip_zone *strip_zone; /* This one too */
+ int nr_strip_zones;
+ struct strip_zone *smallest;
+ int nr_zones;
+};
+
+typedef struct raid0_private_data raid0_conf_t;
+
+#define mddev_to_conf(mddev) ((raid0_conf_t *) mddev->private)
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 02:52:04 +0000