| bigbiff | 7b4c7a6 | 2015-01-01 19:44:14 -0500 | [diff] [blame] | 1 | #ifndef UTIL_LINUX_PT_SUN_H |
| 2 | #define UTIL_LINUX_PT_SUN_H |
| 3 | |
| 4 | #include <stdint.h> |
| 5 | |
| 6 | #define SGI_LABEL_MAGIC 0x0be5a941 |
| 7 | |
| 8 | #define SGI_MAXPARTITIONS 16 |
| 9 | #define SGI_MAXVOLUMES 15 |
| 10 | |
| 11 | /* partition types */ |
| 12 | enum { |
| 13 | SGI_TYPE_VOLHDR = 0x00, |
| 14 | SGI_TYPE_TRKREPL = 0x01, |
| 15 | SGI_TYPE_SECREPL = 0x02, |
| 16 | SGI_TYPE_SWAP = 0x03, |
| 17 | SGI_TYPE_BSD = 0x04, |
| 18 | SGI_TYPE_SYSV = 0x05, |
| 19 | SGI_TYPE_ENTIRE_DISK = 0x06, |
| 20 | SGI_TYPE_EFS = 0x07, |
| 21 | SGI_TYPE_LVOL = 0x08, |
| 22 | SGI_TYPE_RLVOL = 0x09, |
| 23 | SGI_TYPE_XFS = 0x0a, |
| 24 | SGI_TYPE_XFSLOG = 0x0b, |
| 25 | SGI_TYPE_XLV = 0x0c, |
| 26 | SGI_TYPE_XVM = 0x0d |
| 27 | }; |
| 28 | |
| 29 | struct sgi_device_parameter { |
| 30 | unsigned char skew; |
| 31 | unsigned char gap1; |
| 32 | unsigned char gap2; |
| 33 | unsigned char sparecyl; |
| 34 | |
| 35 | uint16_t pcylcount; |
| 36 | uint16_t head_vol0; |
| 37 | uint16_t ntrks; /* tracks in cyl 0 or vol 0 */ |
| 38 | |
| 39 | unsigned char cmd_tag_queue_depth; |
| 40 | unsigned char unused0; |
| 41 | |
| 42 | uint16_t unused1; |
| 43 | uint16_t nsect; /* sectors/tracks in cyl 0 or vol 0 */ |
| 44 | uint16_t bytes; |
| 45 | uint16_t ilfact; |
| 46 | uint32_t flags; /* SGI_DEVPARAM_* controller flags */ |
| 47 | uint32_t datarate; |
| 48 | uint32_t retries_on_error; |
| 49 | uint32_t ms_per_word; |
| 50 | uint16_t xylogics_gap1; |
| 51 | uint16_t xylogics_syncdelay; |
| 52 | uint16_t xylogics_readdelay; |
| 53 | uint16_t xylogics_gap2; |
| 54 | uint16_t xylogics_readgate; |
| 55 | uint16_t xylogics_writecont; |
| 56 | } __attribute__((packed)); |
| 57 | |
| 58 | enum { |
| 59 | SGI_DEVPARAM_SECTOR_SLIP = 0x01, |
| 60 | SGI_DEVPARAM_SECTOR_FWD = 0x02, |
| 61 | SGI_DEVPARAM_TRACK_FWD = 0x04, |
| 62 | SGI_DEVPARAM_TRACK_MULTIVOL = 0x08, |
| 63 | SGI_DEVPARAM_IGNORE_ERRORS = 0x10, |
| 64 | SGI_DEVPARAM_RESEEK = 0x20, |
| 65 | SGI_DEVPARAM_CMDTAGQ_ENABLE = 0x40 |
| 66 | }; |
| 67 | |
| 68 | |
| 69 | struct sgi_disklabel { |
| 70 | uint32_t magic; /* magic number */ |
| 71 | uint16_t root_part_num; /* # root partition */ |
| 72 | uint16_t swap_part_num; /* # swap partition */ |
| 73 | unsigned char boot_file[16]; /* name of boot file */ |
| 74 | |
| 75 | struct sgi_device_parameter devparam; /* not used now */ |
| 76 | |
| 77 | struct sgi_volume { |
| 78 | unsigned char name[8]; /* name of volume */ |
| 79 | uint32_t block_num; /* logical block number */ |
| 80 | uint32_t num_bytes; /* how big, in bytes */ |
| 81 | } __attribute__((packed)) volume[SGI_MAXVOLUMES]; |
| 82 | |
| 83 | struct sgi_partition { |
| 84 | uint32_t num_blocks; /* size in logical blocks */ |
| 85 | uint32_t first_block; /* first logical block */ |
| 86 | uint32_t type; /* type of this partition */ |
| 87 | } __attribute__((packed)) partitions[SGI_MAXPARTITIONS]; |
| 88 | |
| 89 | /* checksum is the 32bit 2's complement sum of the disklabel */ |
| 90 | uint32_t csum; /* disk label checksum */ |
| 91 | uint32_t padding; /* padding */ |
| 92 | } __attribute__((packed)); |
| 93 | |
| 94 | static inline uint32_t sgi_pt_checksum(struct sgi_disklabel *label) |
| 95 | { |
| 96 | int i; |
| 97 | uint32_t *ptr = (uint32_t *) label; |
| 98 | uint32_t sum = 0; |
| 99 | |
| 100 | i = sizeof(*label) / sizeof(*ptr); |
| 101 | |
| 102 | while (i) { |
| 103 | i--; |
| 104 | sum -= be32_to_cpu(ptr[i]); |
| 105 | } |
| 106 | |
| 107 | return sum; |
| 108 | } |
| 109 | |
| 110 | #endif /* UTIL_LINUX_PT_SUN_H */ |