| 1 | /*
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| 2 | * Copyright (c) 2024 Miroslav Cimerman
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup hr
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | */
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| 35 |
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| 36 | #ifndef _HR_VAR_H
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| 37 | #define _HR_VAR_H
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| 38 |
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| 39 | #include <adt/list.h>
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| 40 | #include <bd_srv.h>
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| 41 | #include <errno.h>
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| 42 | #include <fibril_synch.h>
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| 43 | #include <hr.h>
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| 44 |
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| 45 | #define NAME "hr"
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| 46 |
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| 47 | #define HR_STRIP_SIZE DATA_XFER_LIMIT
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| 48 |
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| 49 | typedef struct hr_volume hr_volume_t;
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| 50 |
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| 51 | typedef struct hr_ops {
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| 52 | errno_t (*create)(hr_volume_t *);
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| 53 | errno_t (*init)(hr_volume_t *);
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| 54 | void (*status_event)(hr_volume_t *);
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| 55 | errno_t (*add_hotspare)(hr_volume_t *, service_id_t);
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| 56 | } hr_ops_t;
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| 57 |
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| 58 | typedef struct hr_volume {
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| 59 | hr_ops_t hr_ops;
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| 60 | bd_srvs_t hr_bds;
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| 61 |
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| 62 | link_t lvolumes;
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| 63 | fibril_mutex_t lock;
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| 64 |
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| 65 | list_t range_lock_list;
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| 66 | fibril_mutex_t range_lock_list_lock;
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| 67 |
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| 68 | size_t extent_no;
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| 69 | hr_extent_t extents[HR_MAX_EXTENTS];
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| 70 |
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| 71 | size_t hotspare_no;
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| 72 | hr_extent_t hotspares[HR_MAX_EXTENTS];
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| 73 |
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| 74 | size_t bsize;
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| 75 | uint64_t nblocks;
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| 76 | uint64_t data_blkno;
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| 77 | uint64_t data_offset; /* in blocks */
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| 78 | uint32_t strip_size;
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| 79 |
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| 80 | uint64_t rebuild_blk;
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| 81 |
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| 82 | uint64_t counter; /* metadata syncing */
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| 83 |
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| 84 | service_id_t svc_id;
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| 85 | hr_vol_status_t status;
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| 86 | hr_level_t level;
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| 87 | uint8_t RLQ; /* RAID Level Qualifier */
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| 88 | char devname[HR_DEVNAME_LEN];
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| 89 | } hr_volume_t;
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| 90 |
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| 91 | typedef enum {
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| 92 | HR_BD_SYNC,
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| 93 | HR_BD_READ,
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| 94 | HR_BD_WRITE
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| 95 | } hr_bd_op_type_t;
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| 96 |
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| 97 | typedef struct hr_range_lock {
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| 98 | fibril_mutex_t lock;
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| 99 | link_t link;
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| 100 | hr_volume_t *vol;
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| 101 | uint64_t off;
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| 102 | uint64_t len;
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| 103 | size_t pending; /* protected by vol->range_lock_list_lock */
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| 104 | bool ignore; /* protected by vol->range_lock_list_lock */
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| 105 | } hr_range_lock_t;
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| 106 |
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| 107 | extern errno_t hr_init_devs(hr_volume_t *);
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| 108 | extern void hr_fini_devs(hr_volume_t *);
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| 109 |
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| 110 | extern errno_t hr_raid0_create(hr_volume_t *);
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| 111 | extern errno_t hr_raid1_create(hr_volume_t *);
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| 112 | extern errno_t hr_raid5_create(hr_volume_t *);
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| 113 |
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| 114 | extern errno_t hr_raid0_init(hr_volume_t *);
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| 115 | extern errno_t hr_raid1_init(hr_volume_t *);
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| 116 | extern errno_t hr_raid5_init(hr_volume_t *);
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| 117 |
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| 118 | extern void hr_raid0_status_event(hr_volume_t *);
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| 119 | extern void hr_raid1_status_event(hr_volume_t *);
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| 120 | extern void hr_raid5_status_event(hr_volume_t *);
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| 121 |
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| 122 | extern errno_t hr_raid1_add_hotspare(hr_volume_t *, service_id_t);
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| 123 | extern errno_t hr_raid5_add_hotspare(hr_volume_t *, service_id_t);
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| 124 |
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| 125 | #endif
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| 126 |
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| 127 | /** @}
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| 128 | */
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