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unused_nvidia_raid.c 1.9 KB

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