Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / include / zfs / dnode.h

diff --git a/qemu/roms/u-boot/include/zfs/dnode.h b/qemu/roms/u-boot/include/zfs/dnode.h
new file mode 100644 (file)
index 0000000..182dd9b
--- /dev/null
+++ b/qemu/roms/u-boot/include/zfs/dnode.h
@@ -0,0 +1,69 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1999,2000,2001,2002,2003,2004  Free Software Foundation, Inc.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+/*
+ * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef        _SYS_DNODE_H
+#define        _SYS_DNODE_H
+
+#include <zfs/spa.h>
+
+/*
+ * Fixed constants.
+ */
+#define        DNODE_SHIFT             9       /* 512 bytes */
+#define        DN_MIN_INDBLKSHIFT      10      /* 1k */
+#define        DN_MAX_INDBLKSHIFT      14      /* 16k */
+#define        DNODE_BLOCK_SHIFT       14      /* 16k */
+#define        DNODE_CORE_SIZE         64      /* 64 bytes for dnode sans blkptrs */
+#define        DN_MAX_OBJECT_SHIFT     48      /* 256 trillion (zfs_fid_t limit) */
+#define        DN_MAX_OFFSET_SHIFT     64      /* 2^64 bytes in a dnode */
+
+/*
+ * Derived constants.
+ */
+#define        DNODE_SIZE      (1 << DNODE_SHIFT)
+#define        DN_MAX_NBLKPTR  ((DNODE_SIZE - DNODE_CORE_SIZE) >> SPA_BLKPTRSHIFT)
+#define        DN_MAX_BONUSLEN (DNODE_SIZE - DNODE_CORE_SIZE - (1 << SPA_BLKPTRSHIFT))
+#define        DN_MAX_OBJECT   (1ULL << DN_MAX_OBJECT_SHIFT)
+
+#define        DNODES_PER_BLOCK_SHIFT  (DNODE_BLOCK_SHIFT - DNODE_SHIFT)
+#define        DNODES_PER_BLOCK        (1ULL << DNODES_PER_BLOCK_SHIFT)
+#define        DNODES_PER_LEVEL_SHIFT  (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT)
+
+#define        DNODE_FLAG_SPILL_BLKPTR (1<<2)
+
+#define        DN_BONUS(dnp)   ((void *)((dnp)->dn_bonus + \
+       (((dnp)->dn_nblkptr - 1) * sizeof(blkptr_t))))
+
+typedef struct dnode_phys {
+       uint8_t dn_type;                /* dmu_object_type_t */
+       uint8_t dn_indblkshift;         /* ln2(indirect block size) */
+       uint8_t dn_nlevels;             /* 1=dn_blkptr->data blocks */
+       uint8_t dn_nblkptr;             /* length of dn_blkptr */
+       uint8_t dn_bonustype;           /* type of data in bonus buffer */
+       uint8_t dn_checksum;            /* ZIO_CHECKSUM type */
+       uint8_t dn_compress;            /* ZIO_COMPRESS type */
+       uint8_t dn_flags;               /* DNODE_FLAG_* */
+       uint16_t dn_datablkszsec;       /* data block size in 512b sectors */
+       uint16_t dn_bonuslen;           /* length of dn_bonus */
+       uint8_t dn_pad2[4];
+
+       /* accounting is protected by dn_dirty_mtx */
+       uint64_t dn_maxblkid;           /* largest allocated block ID */
+       uint64_t dn_used;               /* bytes (or sectors) of disk space */
+
+       uint64_t dn_pad3[4];
+
+       blkptr_t dn_blkptr[1];
+       uint8_t dn_bonus[DN_MAX_BONUSLEN - sizeof(blkptr_t)];
+       blkptr_t dn_spill;
+} dnode_phys_t;
+
+#endif /* _SYS_DNODE_H */