xref: /openbmc/u-boot/include/zfs_common.h (revision 0a333602)
1 /*
2  * ZFS filesystem port for Uboot by
3  * Jorgen Lundman <lundman at lundman.net>
4  *
5  * zfsfs support
6  * made from existing GRUB Sources by Sun, GNU and others.
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 version 2 as
10  * published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  */
21 
22 #ifndef __ZFS_COMMON__
23 #define __ZFS_COMMON__
24 
25 #define SECTOR_SIZE			0x200
26 #define SECTOR_BITS			9
27 
28 
29 typedef enum zfs_endian {
30 	UNKNOWN_ENDIAN = -2,
31 	LITTLE_ENDIAN = -1,
32 	BIG_ENDIAN = 0
33 } zfs_endian_t;
34 
35 
36 /* Endian macros. */
37 #define zfs_to_cpu16(x, a) (((a) == BIG_ENDIAN) ? be16_to_cpu(x) \
38 								: le16_to_cpu(x))
39 #define cpu_to_zfs16(x, a) (((a) == BIG_ENDIAN) ? cpu_to_be16(x) \
40 								: cpu_to_le16(x))
41 
42 #define zfs_to_cpu32(x, a) (((a) == BIG_ENDIAN) ? be32_to_cpu(x) \
43 								: le32_to_cpu(x))
44 #define cpu_to_zfs32(x, a) (((a) == BIG_ENDIAN) ? cpu_to_be32(x) \
45 								: cpu_to_le32(x))
46 
47 #define zfs_to_cpu64(x, a) (((a) == BIG_ENDIAN) ? be64_to_cpu(x) \
48 								: le64_to_cpu(x))
49 #define cpu_to_zfs64(x, a) (((a) == BIG_ENDIAN) ? cpu_to_be64(x) \
50 								: cpu_to_le64(x))
51 
52 
53 enum zfs_errors {
54 	ZFS_ERR_NONE = 0,
55 	ZFS_ERR_NOT_IMPLEMENTED_YET = -1,
56 	ZFS_ERR_BAD_FS = -2,
57 	ZFS_ERR_OUT_OF_MEMORY = -3,
58 	ZFS_ERR_FILE_NOT_FOUND = -4,
59 	ZFS_ERR_BAD_FILE_TYPE = -5,
60 	ZFS_ERR_OUT_OF_RANGE = -6,
61 };
62 
63 struct zfs_filesystem {
64 
65 	/* Block Device Descriptor */
66 	struct blk_desc *dev_desc;
67 };
68 
69 struct device_s {
70 	uint64_t part_length;
71 };
72 typedef struct device_s *device_t;
73 
74 struct zfs_file {
75 	device_t device;
76 	uint64_t size;
77 	void *data;
78 	uint64_t offset;
79 };
80 
81 typedef struct zfs_file *zfs_file_t;
82 
83 struct zfs_dirhook_info {
84 	int dir;
85 	int mtimeset;
86 	time_t mtime;
87 	time_t mtime2;
88 };
89 
90 
91 
92 
93 struct zfs_filesystem *zfsget_fs(void);
94 int zfs_open(zfs_file_t, const char *filename);
95 uint64_t zfs_read(zfs_file_t, char *buf, uint64_t len);
96 struct zfs_data *zfs_mount(device_t);
97 int zfs_close(zfs_file_t);
98 int zfs_ls(device_t dev, const char *path,
99 		   int (*hook) (const char *, const struct zfs_dirhook_info *));
100 int zfs_devread(int sector, int byte_offset, int byte_len, char *buf);
101 void zfs_set_blk_dev(struct blk_desc *rbdd, disk_partition_t *info);
102 void zfs_unmount(struct zfs_data *data);
103 int lzjb_decompress(void *, void *, uint32_t, uint32_t);
104 #endif
105