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_NVIDIARAID 21//config:### bool "nvidia raid" 22//config:### default y 23//config:### depends on VOLUMEID 24 25//kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_NVIDIARAID) += nvidia_raid.o 26 27#include "volume_id_internal.h" 28 29struct nvidia_meta { 30 uint8_t vendor[8]; 31 uint32_t size; 32 uint32_t chksum; 33 uint16_t version; 34} PACKED; 35 36#define NVIDIA_SIGNATURE "NVIDIA" 37 38int FAST_FUNC volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size) 39{ 40 uint64_t meta_off; 41 struct nvidia_meta *nv; 42 43 dbg("probing at offset 0x%llx, size 0x%llx", 44 (unsigned long long) off, (unsigned long long) size); 45 46 if (size < 0x10000) 47 return -1; 48 49 meta_off = ((size / 0x200)-2) * 0x200; 50 nv = volume_id_get_buffer(id, off + meta_off, 0x200); 51 if (nv == NULL) 52 return -1; 53 54 if (memcmp(nv->vendor, NVIDIA_SIGNATURE, sizeof(NVIDIA_SIGNATURE)-1) != 0) 55 return -1; 56 57// volume_id_set_usage(id, VOLUME_ID_RAID); 58// snprintf(id->type_version, sizeof(id->type_version)-1, "%u", le16_to_cpu(nv->version)); 59// id->type = "nvidia_raid_member"; 60 61 return 0; 62} 63