| 1 | /*
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| 2 | * volume_id - reads filesystem label and uuid
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| 3 | *
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| 4 | * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU Lesser General Public
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| 8 | * License as published by the Free Software Foundation; either
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| 9 | * version 2.1 of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This library is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | * Lesser General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Lesser General Public
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| 17 | * License along with this library; if not, write to the Free Software
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| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 19 | */
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| 20 |
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| 21 | //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_NVIDIARAID) += nvidia_raid.o
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| 22 |
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| 23 | //config:
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| 24 | //config:### config FEATURE_VOLUMEID_NVIDIARAID
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| 25 | //config:### bool "nvidia raid"
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| 26 | //config:### default y
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| 27 | //config:### depends on VOLUMEID
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| 28 | //config:### help
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| 29 | //config:### TODO
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| 30 | //config:
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| 31 |
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| 32 | #include "volume_id_internal.h"
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| 33 |
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| 34 | struct nvidia_meta {
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| 35 | uint8_t vendor[8];
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| 36 | uint32_t size;
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| 37 | uint32_t chksum;
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| 38 | uint16_t version;
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| 39 | } PACKED;
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| 40 |
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| 41 | #define NVIDIA_SIGNATURE "NVIDIA"
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| 42 |
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| 43 | int FAST_FUNC volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size)
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| 44 | {
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| 45 | uint64_t meta_off;
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| 46 | struct nvidia_meta *nv;
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| 47 |
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| 48 | dbg("probing at offset 0x%llx, size 0x%llx",
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| 49 | (unsigned long long) off, (unsigned long long) size);
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| 50 |
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| 51 | if (size < 0x10000)
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| 52 | return -1;
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| 53 |
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| 54 | meta_off = ((size / 0x200)-2) * 0x200;
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| 55 | nv = volume_id_get_buffer(id, off + meta_off, 0x200);
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| 56 | if (nv == NULL)
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| 57 | return -1;
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| 58 |
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| 59 | if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0)
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| 60 | return -1;
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| 61 |
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| 62 | // volume_id_set_usage(id, VOLUME_ID_RAID);
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| 63 | // snprintf(id->type_version, sizeof(id->type_version)-1, "%u", le16_to_cpu(nv->version));
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| 64 | // id->type = "nvidia_raid_member";
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| 65 |
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| 66 | return 0;
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| 67 | }
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