diff options
Diffstat (limited to 'qemu/roms/u-boot/include/zfs/spa.h')
| -rw-r--r-- | qemu/roms/u-boot/include/zfs/spa.h | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/qemu/roms/u-boot/include/zfs/spa.h b/qemu/roms/u-boot/include/zfs/spa.h deleted file mode 100644 index eb54d906b..000000000 --- a/qemu/roms/u-boot/include/zfs/spa.h +++ /dev/null @@ -1,280 +0,0 @@ -/* - * GRUB -- GRand Unified Bootloader - * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. - * - * SPDX-License-Identifier: GPL-2.0+ - */ -/* - * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. - */ - -#ifndef ZFS_SPA_HEADER -#define ZFS_SPA_HEADER 1 - - -/* - * General-purpose 32-bit and 64-bit bitfield encodings. - */ -#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U << (len)) -#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL << (len)) -#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) << (low)) -#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) << (low)) - -#define BF32_GET(x, low, len) BF32_DECODE(x, low, len) -#define BF64_GET(x, low, len) BF64_DECODE(x, low, len) - -#define BF32_SET(x, low, len, val) \ - ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len)) -#define BF64_SET(x, low, len, val) \ - ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len)) - -#define BF32_GET_SB(x, low, len, shift, bias) \ - ((BF32_GET(x, low, len) + (bias)) << (shift)) -#define BF64_GET_SB(x, low, len, shift, bias) \ - ((BF64_GET(x, low, len) + (bias)) << (shift)) - -#define BF32_SET_SB(x, low, len, shift, bias, val) \ - BF32_SET(x, low, len, ((val) >> (shift)) - (bias)) -#define BF64_SET_SB(x, low, len, shift, bias, val) \ - BF64_SET(x, low, len, ((val) >> (shift)) - (bias)) - -/* - * We currently support nine block sizes, from 512 bytes to 128K. - * We could go higher, but the benefits are near-zero and the cost - * of COWing a giant block to modify one byte would become excessive. - */ -#define SPA_MINBLOCKSHIFT 9 -#define SPA_MAXBLOCKSHIFT 17 -#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT) -#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT) - -#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1) - -/* - * Size of block to hold the configuration data (a packed nvlist) - */ -#define SPA_CONFIG_BLOCKSIZE (1 << 14) - -/* - * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB. - * The ASIZE encoding should be at least 64 times larger (6 more bits) - * to support up to 4-way RAID-Z mirror mode with worst-case gang block - * overhead, three DVAs per bp, plus one more bit in case we do anything - * else that expands the ASIZE. - */ -#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512) */ -#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512) */ -#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger */ - -/* - * All SPA data is represented by 128-bit data virtual addresses (DVAs). - * The members of the dva_t should be considered opaque outside the SPA. - */ -typedef struct dva { - uint64_t dva_word[2]; -} dva_t; - -/* - * Each block has a 256-bit checksum -- strong enough for cryptographic hashes. - */ -typedef struct zio_cksum { - uint64_t zc_word[4]; -} zio_cksum_t; - -/* - * Each block is described by its DVAs, time of birth, checksum, etc. - * The word-by-word, bit-by-bit layout of the blkptr is as follows: - * - * 64 56 48 40 32 24 16 8 0 - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 0 | vdev1 | GRID | ASIZE | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 1 |G| offset1 | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 2 | vdev2 | GRID | ASIZE | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 3 |G| offset2 | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 4 | vdev3 | GRID | ASIZE | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 5 |G| offset3 | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 6 |BDX|lvl| type | cksum | comp | PSIZE | LSIZE | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 7 | padding | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 8 | padding | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * 9 | physical birth txg | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * a | logical birth txg | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * b | fill count | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * c | checksum[0] | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * d | checksum[1] | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * e | checksum[2] | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * f | checksum[3] | - * +-------+-------+-------+-------+-------+-------+-------+-------+ - * - * Legend: - * - * vdev virtual device ID - * offset offset into virtual device - * LSIZE logical size - * PSIZE physical size (after compression) - * ASIZE allocated size (including RAID-Z parity and gang block headers) - * GRID RAID-Z layout information (reserved for future use) - * cksum checksum function - * comp compression function - * G gang block indicator - * B byteorder (endianness) - * D dedup - * X unused - * lvl level of indirection - * type DMU object type - * phys birth txg of block allocation; zero if same as logical birth txg - * log. birth transaction group in which the block was logically born - * fill count number of non-zero blocks under this bp - * checksum[4] 256-bit checksum of the data this bp describes - */ -#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes */ -#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp */ - -typedef struct blkptr { - dva_t blk_dva[SPA_DVAS_PER_BP]; /* Data Virtual Addresses */ - uint64_t blk_prop; /* size, compression, type, etc */ - uint64_t blk_pad[2]; /* Extra space for the future */ - uint64_t blk_phys_birth; /* txg when block was allocated */ - uint64_t blk_birth; /* transaction group at birth */ - uint64_t blk_fill; /* fill count */ - zio_cksum_t blk_cksum; /* 256-bit checksum */ -} blkptr_t; - -/* - * Macros to get and set fields in a bp or DVA. - */ -#define DVA_GET_ASIZE(dva) \ - BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0) -#define DVA_SET_ASIZE(dva, x) \ - BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x) - -#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8) -#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x) - -#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32) -#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x) - -#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1) -#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x) - -#define BP_GET_LSIZE(bp) \ - BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1) -#define BP_SET_LSIZE(bp, x) \ - BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x) - -#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8) -#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x) - -#define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8) -#define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x) - -#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8) -#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x) - -#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5) -#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x) - -#define BP_GET_PROP_BIT_61(bp) BF64_GET((bp)->blk_prop, 61, 1) -#define BP_SET_PROP_BIT_61(bp, x) BF64_SET((bp)->blk_prop, 61, 1, x) - -#define BP_GET_DEDUP(bp) BF64_GET((bp)->blk_prop, 62, 1) -#define BP_SET_DEDUP(bp, x) BF64_SET((bp)->blk_prop, 62, 1, x) - -#define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1)) -#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x) - -#define BP_PHYSICAL_BIRTH(bp) \ - ((bp)->blk_phys_birth ? (bp)->blk_phys_birth : (bp)->blk_birth) - -#define BP_SET_BIRTH(bp, logical, physical) \ - { \ - (bp)->blk_birth = (logical); \ - (bp)->blk_phys_birth = ((logical) == (physical) ? 0 : (physical)); \ - } - -#define BP_GET_ASIZE(bp) \ - (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ - DVA_GET_ASIZE(&(bp)->blk_dva[2])) - -#define BP_GET_UCSIZE(bp) \ - ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \ - BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp)); - -#define BP_GET_NDVAS(bp) \ - (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \ - !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \ - !!DVA_GET_ASIZE(&(bp)->blk_dva[2])) - -#define BP_COUNT_GANG(bp) \ - (DVA_GET_GANG(&(bp)->blk_dva[0]) + \ - DVA_GET_GANG(&(bp)->blk_dva[1]) + \ - DVA_GET_GANG(&(bp)->blk_dva[2])) - -#define DVA_EQUAL(dva1, dva2) \ - ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \ - (dva1)->dva_word[0] == (dva2)->dva_word[0]) - -#define BP_EQUAL(bp1, bp2) \ - (BP_PHYSICAL_BIRTH(bp1) == BP_PHYSICAL_BIRTH(bp2) && \ - DVA_EQUAL(&(bp1)->blk_dva[0], &(bp2)->blk_dva[0]) && \ - DVA_EQUAL(&(bp1)->blk_dva[1], &(bp2)->blk_dva[1]) && \ - DVA_EQUAL(&(bp1)->blk_dva[2], &(bp2)->blk_dva[2])) - -#define ZIO_CHECKSUM_EQUAL(zc1, zc2) \ - (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \ - ((zc1).zc_word[1] - (zc2).zc_word[1]) | \ - ((zc1).zc_word[2] - (zc2).zc_word[2]) | \ - ((zc1).zc_word[3] - (zc2).zc_word[3]))) - -#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0) - -#define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \ - { \ - (zcp)->zc_word[0] = w0; \ - (zcp)->zc_word[1] = w1; \ - (zcp)->zc_word[2] = w2; \ - (zcp)->zc_word[3] = w3; \ - } - -#define BP_IDENTITY(bp) (&(bp)->blk_dva[0]) -#define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp)) -#define BP_IS_HOLE(bp) ((bp)->blk_birth == 0) - -/* BP_IS_RAIDZ(bp) assumes no block compression */ -#define BP_IS_RAIDZ(bp) (DVA_GET_ASIZE(&(bp)->blk_dva[0]) > \ - BP_GET_PSIZE(bp)) - -#define BP_ZERO(bp) \ - { \ - (bp)->blk_dva[0].dva_word[0] = 0; \ - (bp)->blk_dva[0].dva_word[1] = 0; \ - (bp)->blk_dva[1].dva_word[0] = 0; \ - (bp)->blk_dva[1].dva_word[1] = 0; \ - (bp)->blk_dva[2].dva_word[0] = 0; \ - (bp)->blk_dva[2].dva_word[1] = 0; \ - (bp)->blk_prop = 0; \ - (bp)->blk_pad[0] = 0; \ - (bp)->blk_pad[1] = 0; \ - (bp)->blk_phys_birth = 0; \ - (bp)->blk_birth = 0; \ - (bp)->blk_fill = 0; \ - ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \ - } - -#define BP_SPRINTF_LEN 320 - -#endif /* ! ZFS_SPA_HEADER */ |