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8#ifndef __BTRFS_CONV_FUNCS_H__
9#define __BTRFS_CONV_FUNCS_H__
10
11#include "ctree.h"
12#include <u-boot/variadic-macro.h>
13#include <asm/byteorder.h>
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21
22
23#if defined(__LITTLE_ENDIAN)
24
25
26
27
28# define DEFINE_CONV(n,...) \
29 static inline struct n *n##_to_disk(struct n * r) \
30 { \
31 return r; \
32 } \
33 static inline struct n *n##_to_cpu(struct n * r) \
34 { \
35 return r; \
36 }
37
38# define DEFINE_CONV_ALT(n,a,...) \
39 static inline struct n *n##_to_disk_##a(struct n * r) \
40 { \
41 return r; \
42 } \
43 static inline struct n *n##_to_cpu_##a(struct n * r) \
44 { \
45 return r; \
46 }
47
48#else
49
50
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56
57
58
59# define DEFINE_CONV_FOR_STRUCT(n) \
60 static inline struct n * n##_to_disk(struct n *); \
61 static inline struct n * n##_to_cpu(struct n *); \
62 static inline struct n n##_to_disk_v(struct n x) { \
63 return *n##_to_disk(&x); \
64 } \
65 static inline struct n n##_to_cpu_v(struct n x) { \
66 return *n##_to_cpu(&x); \
67 }
68
69DEFINE_CONV_FOR_STRUCT(btrfs_key)
70DEFINE_CONV_FOR_STRUCT(btrfs_stripe)
71DEFINE_CONV_FOR_STRUCT(btrfs_timespec)
72DEFINE_CONV_FOR_STRUCT(btrfs_inode_item)
73DEFINE_CONV_FOR_STRUCT(btrfs_root_backup)
74DEFINE_CONV_FOR_STRUCT(btrfs_dev_item)
75
76
77# define DEFINE_CONV_CPU_TO_LE(x) \
78 (d->x) = _Generic((d->x), \
79 __u16: cpu_to_le16, \
80 __u32: cpu_to_le32, \
81 __u64: cpu_to_le64, \
82 struct btrfs_key: btrfs_key_to_disk_v, \
83 struct btrfs_stripe: btrfs_stripe_to_disk_v, \
84 struct btrfs_timespec: btrfs_timespec_to_disk_v, \
85 struct btrfs_inode_item: btrfs_inode_item_to_disk_v, \
86 struct btrfs_root_backup: btrfs_root_backup_to_disk_v, \
87 struct btrfs_dev_item: btrfs_dev_item_to_disk_v \
88 )((d->x));
89
90# define DEFINE_CONV_LE_TO_CPU(x) \
91 (d->x) = _Generic((d->x), \
92 __u16: le16_to_cpu, \
93 __u32: le32_to_cpu, \
94 __u64: le64_to_cpu, \
95 struct btrfs_key: btrfs_key_to_cpu_v, \
96 struct btrfs_stripe: btrfs_stripe_to_cpu_v, \
97 struct btrfs_timespec: btrfs_timespec_to_cpu_v, \
98 struct btrfs_inode_item: btrfs_inode_item_to_cpu_v, \
99 struct btrfs_root_backup: btrfs_root_backup_to_cpu_v, \
100 struct btrfs_dev_item: btrfs_dev_item_to_cpu_v \
101 )((d->x));
102
103# define DEFINE_CONV_ONE(t,n,m,...) \
104 static inline struct t * n(struct t * d) { \
105 CALL_MACRO_FOR_EACH(m, ##__VA_ARGS__) \
106 return d; \
107 }
108
109
110# define DEFINE_CONV(n,...) \
111 DEFINE_CONV_ONE(n,n##_to_disk,DEFINE_CONV_CPU_TO_LE,##__VA_ARGS__) \
112 DEFINE_CONV_ONE(n,n##_to_cpu,DEFINE_CONV_LE_TO_CPU,##__VA_ARGS__)
113
114# define DEFINE_CONV_ALT(n,a,...) \
115 DEFINE_CONV_ONE(n,n##_to_disk_##a,DEFINE_CONV_CPU_TO_LE, \
116 ##__VA_ARGS__) \
117 DEFINE_CONV_ONE(n,n##_to_cpu_##a,DEFINE_CONV_LE_TO_CPU,##__VA_ARGS__)
118
119#endif
120
121DEFINE_CONV(btrfs_key, objectid, offset)
122DEFINE_CONV(btrfs_dev_item, devid, total_bytes, bytes_used, io_align, io_width,
123 sector_size, type, generation, start_offset, dev_group)
124DEFINE_CONV(btrfs_stripe, devid, offset)
125DEFINE_CONV(btrfs_chunk, length, owner, stripe_len, type, io_align, io_width,
126 sector_size, num_stripes, sub_stripes)
127DEFINE_CONV(btrfs_free_space_entry, offset, bytes)
128DEFINE_CONV(btrfs_free_space_header, location, generation, num_entries,
129 num_bitmaps)
130DEFINE_CONV(btrfs_extent_item, refs, generation, flags)
131DEFINE_CONV(btrfs_tree_block_info, key)
132DEFINE_CONV(btrfs_extent_data_ref, root, objectid, offset, count)
133DEFINE_CONV(btrfs_shared_data_ref, count)
134DEFINE_CONV(btrfs_extent_inline_ref, offset)
135DEFINE_CONV(btrfs_dev_extent, chunk_tree, chunk_objectid, chunk_offset, length)
136DEFINE_CONV(btrfs_inode_ref, index, name_len)
137DEFINE_CONV(btrfs_inode_extref, parent_objectid, index, name_len)
138DEFINE_CONV(btrfs_timespec, sec, nsec)
139DEFINE_CONV(btrfs_inode_item, generation, transid, size, nbytes, block_group,
140 nlink, uid, gid, mode, rdev, flags, sequence, atime, ctime, mtime,
141 otime)
142DEFINE_CONV(btrfs_dir_log_item, end)
143DEFINE_CONV(btrfs_dir_item, location, transid, data_len, name_len)
144DEFINE_CONV(btrfs_root_item, inode, generation, root_dirid, bytenr, byte_limit,
145 bytes_used, last_snapshot, flags, refs, drop_progress,
146 generation_v2, ctransid, otransid, stransid, rtransid, ctime,
147 otime, stime, rtime)
148DEFINE_CONV(btrfs_root_ref, dirid, sequence, name_len)
149DEFINE_CONV(btrfs_file_extent_item, generation, ram_bytes, other_encoding,
150 disk_bytenr, disk_num_bytes, offset, num_bytes)
151DEFINE_CONV_ALT(btrfs_file_extent_item, inl, generation, ram_bytes,
152 other_encoding)
153DEFINE_CONV(btrfs_dev_replace_item, src_devid, cursor_left, cursor_right,
154 cont_reading_from_srcdev_mode, replace_state, time_started,
155 time_stopped, num_write_errors, num_uncorrectable_read_errors)
156DEFINE_CONV(btrfs_block_group_item, used, chunk_objectid, flags)
157DEFINE_CONV(btrfs_free_space_info, extent_count, flags)
158
159DEFINE_CONV(btrfs_header, bytenr, flags, generation, owner, nritems)
160DEFINE_CONV(btrfs_root_backup, tree_root, tree_root_gen, chunk_root,
161 chunk_root_gen, extent_root, extent_root_gen, fs_root, fs_root_gen,
162 dev_root, dev_root_gen, csum_root, csum_root_gen, total_bytes,
163 bytes_used, num_devices)
164DEFINE_CONV(btrfs_super_block, bytenr, flags, magic, generation, root,
165 chunk_root, log_root, log_root_transid, total_bytes, bytes_used,
166 root_dir_objectid, num_devices, sectorsize, nodesize,
167 __unused_leafsize, stripesize, sys_chunk_array_size,
168 chunk_root_generation, compat_flags, compat_ro_flags,
169 incompat_flags, csum_type, dev_item, cache_generation,
170 uuid_tree_generation, super_roots[0], super_roots[1],
171 super_roots[2], super_roots[3])
172DEFINE_CONV(btrfs_item, key, offset, size)
173DEFINE_CONV(btrfs_key_ptr, key, blockptr, generation)
174
175#endif
176
