1 /*
2 * volume_id - reads filesystem label and uuid
3 *
4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 //config:### config FEATURE_VOLUMEID_SILICONRAID
21 //config:### bool "silicon raid"
22 //config:### default y
23 //config:### depends on VOLUMEID
24
25 //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_SILICONRAID) += silicon_raid.o
26
27 #include "volume_id_internal.h"
28
29 struct silicon_meta {
30 uint8_t unknown0[0x2E];
31 uint8_t ascii_version[0x36 - 0x2E];
32 uint8_t diskname[0x56 - 0x36];
33 uint8_t unknown1[0x60 - 0x56];
34 uint32_t magic;
35 uint32_t unknown1a[0x6C - 0x64];
36 uint32_t array_sectors_low;
37 uint32_t array_sectors_high;
38 uint8_t unknown2[0x78 - 0x74];
39 uint32_t thisdisk_sectors;
40 uint8_t unknown3[0x100 - 0x7C];
41 uint8_t unknown4[0x104 - 0x100];
42 uint16_t product_id;
43 uint16_t vendor_id;
44 uint16_t minor_ver;
45 uint16_t major_ver;
46 } PACKED;
47
48 #define SILICON_MAGIC 0x2F000000
49
volume_id_probe_silicon_medley_raid(struct volume_id * id,uint64_t off,uint64_t size)50 int FAST_FUNC volume_id_probe_silicon_medley_raid(struct volume_id *id, uint64_t off, uint64_t size)
51 {
52 uint64_t meta_off;
53 struct silicon_meta *sil;
54
55 dbg("probing at offset 0x%llx, size 0x%llx",
56 (unsigned long long) off, (unsigned long long) size);
57
58 if (size < 0x10000)
59 return -1;
60
61 meta_off = ((size / 0x200)-1) * 0x200;
62 sil = volume_id_get_buffer(id, off + meta_off, 0x200);
63 if (sil == NULL)
64 return -1;
65
66 if (sil->magic != cpu_to_le32(SILICON_MAGIC))
67 return -1;
68
69 // volume_id_set_usage(id, VOLUME_ID_RAID);
70 // snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u",
71 // le16_to_cpu(sil->major_ver), le16_to_cpu(sil->minor_ver));
72 // id->type = "silicon_medley_raid_member";
73
74 return 0;
75 }
76